U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
[Manual of Classification, Class Listing] [Manual of Classification, Class 074] [Classification Definitions, Class Listing] [USPTO Home Page]

U.S. Patent Classification System - Classification Definitions
as of June 30, 2000

[Explanation of Data]

Patents classified in a subclass may be accessed by either clicking on the subclass number
preceding each subclass definition or on the " [Patents] " icon, below.
( please note that patents for some subclasses may not be available )

For classification search strategies, please refer to the Classification Index Explanation of Data web page.

(definitions have been obtained from the Patents ASSIST CD-ROM which is produced by the U.S. Patent and Trademark Office Electronic Products Branch)


Class 074

MACHINE ELEMENT OR MECHANISM


Class Definition:
Mechanical combinations, contrivances, or devices constituting portions of machines, instruments and apparatus and consisting of two or more fixed and movable parts so combined that the motion of one compels a completely controlled or constrained motion of the other according to a
law of operation inherent in and depending on the nature of the combination, and also the elemental parts of such machines not provided for in other machine element classes.

LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
This class is intended as a generic class for mechanism and machine parts not otherwise classified. Other machine element classes subgeneric hereto are Class 384, Bearings; Class 464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts.
This class does not include machines and instruments or apparatus claimed as such, for which see the appropriate art classes. It does not include the special tools, instruments, and subcombinations peculiar to the special arts and provided for in the classification of the art classes.

REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:
70, Locks, appropriate subclasses and particularly 174, for machine elements combined with locks wherein the element or its associated structure is modified solely to accommodate the lock, or where the device is modified for the reception of a locking device, whether or not claimed.
73, Measuring and Testing, 488 for a speed responsive device, per se.
92, Expansible Chamber Devices. For the line between Class 74 and Class 92, see References to Other Classes of the class definition of Class 92 under SEARCH CLASS 74.
123, Internal-Combustion Engines, 90.1 and 188.1+, for valve operating mechanism.
173, Tool Driving or Impacting, appropriate subclass for subject matter directed to driving or impacting a tool, when such subject matter includes combined features peculiar to tool driving, but which does not include features limiting the subject matter to a specific tool art, such as specific shape of the work contacting portion of the tool, related tools, or an opposed work support. See References to Other Classes of the Class 173 class definition for a statement of the line with Class 74.
187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle, appropriate subclasses.
188, Brakes, appropriate subclasses and especially subclasses 105-108 for brake operators.
192, Clutches and Power-Stop Control, appropriate subclasses and especially 82, for clutch operators.
193, Conveyors, Chutes, Skids, Guides, and Ways, appropriate subclasses.
198, Conveyors: Power-Driven, appropriate subclasses.
242, Winding, Tensioning, or Guiding, appropriate subclasses.
251, Valves and Valve Actuation, 213 for mechanical movement valve actuators.
267, Spring Devices, appropriate subclasses.
279, Chucks or Sockets, appropriate subclasses.
296, Land Vehicles: Bodies and Tops, various subclasses for bodies and tops having movable components which may be actuated by mechanical means.
384, Bearing, appropriate subclasses, and see (1) Note above.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, see (1) Note supra.
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses, and see particularly (5) Note under Lines With Other Classes in the class definition of Class 474.
475, Planetary Gear Transmission Systems or Components, for planetary gear transmissions.
476, Friction Gear Transmission Systems or Components, for friction gear transmissions.
477, Interrelated Power Delivery Controls, Including Engine Control, for interrelated control between an engine and a transmission.


SUBCLASSES


Subclass: 1 [Patents]

This subclass is indented under the class definition. Miscellaneous mechanisms and not provided for below.

SEE OR SEARCH CLASS:
343, Communications: Radio Wave Antennas, subclass 754 and 757+ for directive antennas with scanning, sweeping or orienting of the beam, and including mechanisms for imparting spiral, rotary or rotary oscillatory motion to the antenna.

Subclass: 1.5 [Patents]

This subclass is indented under the class definition. Mechanisms comprising devices in which a unidirectionally biased power member, during at least a portion of its movement, imparts motion to an element which, as a result of such movement, alternately locks and releases the biased member for intermittent operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
526 for lever stops.
565 for controller checks.

SEE OR SEARCH CLASS:
185, Motors: Spring, Weight, or Animal Powered, subclass 5, for composite weight motors which are escapement controlled and see the search notes thereunder for related search fields.

Subclass: 2 [Patents]

This subclass is indented under the class definition. Mechanisms for releasing or tripping portions of machines to cause other portions to automatically operate due to the expenditure of the potential energy possessed by such parts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
584 for automatically released yieldable pitmans and connecting rods.

SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, subclass 521, for obstacle trip actuated changeable exhibitors.
56, Harvesters, 401, for delivery trip shockers, and 432+, for tripped compressors and binders.
76, Metal Tools and Implements, Making, subclass 15 for trip actuated file cutters, and subclasses 62 and 67 for trip actuated saw setters.
89, Ordnance, 1.5, for trip devices associated with bomb, flare, and signal dropping devices.
111, Planting, 14, for check wire tripped drillers.
114, Ships, subclass 210, for anchor trips.
124, Mechanical Guns and Projectors, 31, for trigger mechanism.
166, Wells, 237 and the subclasses there noted for trip devices in wells.
169, Fire Extinguishers, appropriate subclasses.
188, Brakes, subclass 111, for trip operated vehicle brakes.
200, Electricity: Circuit Makers and Breakers, appropriate subclasses.
212, Traversing Hoists, subclass 116 for cable load suspension trips.
246, Railway Switches and Signals, subclass 76 and 201+, for track trips, 171+, for derailment contact trips and 359+, for train energy actuated trips.
292, Closure Fasteners, 332 for trip actuated closure fasteners.
293, Vehicle Fenders, subclass 33, 35 and 37, for trip actuated fenders.
399, Electrophotography, 75 for machine operations of an electrophotography device and subclasses 107+ for particular structure of the device, specifically subclasses 110+ for modular or displaceable components.

Subclass: 3 [Patents]

This subclass is indented under subclass 2. Mechanisms wherein the releasing or tripping is initiated by a speed responsive device.

SEE OR SEARCH CLASS:
73, Measuring and Testing, 535 for a speed sensor of the centrifugal weight type.
192, Clutches and Power-Stop Control, subclass 140 for speed responsive limit stops and subclass 147 for speed response clutch releases combined with brakes.

Subclass: 3.2 [Patents]

This subclass is indented under subclass 3. Mechanisms wherein a flow controlling valve is the released or tripped device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for other automatically-operated valve gear trips not speed responsive nor otherwise classifiable in subclasses below.

Subclass: 3.5 [Patents]

This subclass is indented under subclass 2. Mechanisms preset to cause the releasing or tripping at a particular time of day or at the termination of a particular time interval following the setting.

SEE OR SEARCH CLASS:
119, Animal Husbandry, 51.14 for feeding devices including timer controlled trips.
137, Fluid Handling, subclass 624.19 and 624.22 for valves including timer controlled trips.
185, Motors: Spring, Weight, or Animal Powered, 27 for a retarded trip releasing a weight motor and subclasses 37+ for a retarded trip releasing a spring motor.
200, Electricity: Circuit Makers and Breakers, 39 for an electrical circuit switch controlled by a retarded latch trip.
368, Horology: Time Measuring Systems or Devices, 243 for an horological device controlling the tripping of a sounding device, and in the definition of subclass 152 see the "Note"

Subclass: 3.52 [Patents]

This subclass is indented under subclass 3.5. Mechanism preset to cause sequential tripping of a single part or tripping of several parts in sequence.

Subclass: 3.54 [Patents]

This subclass is indented under subclass 3.5. Mechanism including a clock, a clock train or similar gearing.

Subclass: 3.56 [Patents]

This subclass is indented under subclass 3.54. Mechanism wherein the trip includes the winding knob of a spring powered clock train or the winding knob of a spring powered operator (e.g., alarm mechanism) under the control of the clock train.

Subclass: 4 [Patents]

This subclass is indented under subclass 2. Mechanism wherein the releasing or tripping is intermittent and the mechanism is intended to insure a uniform speed output.

Subclass: 5 [Patents]

This subclass is indented under the class definition. Devices defined in (1) Note, below and known as gyroscopes.
(1) Note. A conventional gyroscope is a mechanism comprising a rotor journaled to spin about one axis, the journals of the rotor being mounted in an inner gimbal or ring, the inner gimbal being journaled for oscillation in an outer gimbal which in turn is journaled for oscillation relative to a support. The outer gimbal or ring is mounted so as to pivot about an axis in its own plane determined by the support. Hence the outer gimbal possesses one degree of rotational freedom and its axis possesses none. The inner gimbal is mounted in the outer gimbal so as to pivot about an axis in its own plane which axis is always normal to the pivotal axis of the outer gimbal. Hence the inner gimbal possesses two degrees of rotational freedom and its axis possesses one. The rotor is journaled to spin about an axis which is always normal to the axis of the inner gimbal. Hence the rotor possesses three degrees of rotational freedom and its axis possesses two. The center of gravity of the rotor is thus in a fixed position. The rotor simultaneously spins about one axis and is capable of oscillating about the two other axes,
and thus except for its inherent resistance due to rotor spin, it is free to turn in any direction about the fixed point.
Some gyroscopes have mechanical equivalents substituted for one or more of the elements, e.g., the spinning rotor may be suspended in a fluid, instead of being pivotally mounted in gimbals. In some special cases, the outer gimbal (or its equivalent) may be omitted so that the rotor has only two degrees of freedom. In other cases, the center of gravity of the rotor may be offset from the axis of oscillation, and thus the center of gravity of the rotor and the center of suspension of the rotor may not coincide.
(2) Note. This is the generic locus for gyroscopes. Every rotating body has gyroscopic action, but such devices are not placed here unless at least one axis of oscillation is present.
(3) Note. For combinations of gyroscopes with other devices see indented subclass 5.22 and the notes thereto appended.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.22 and the notes thereto and see (2) Note supra.
572 for rotors, per se.

SEE OR SEARCH CLASS:
248, Supports, subclass 182.1 for gimbals, per se.
446, Amusement Devices: Toys, 233 for gyroscopic toys, including gyroscopic tops.

Subclass: 5.1 [Patents]

This subclass is indented under subclass 5. Gyroscopes combined with mechanism to hold the rotor axis fixed, when the rotor is not spinning, or if spinning, when it is desired to take the gyroscope out of useful operation.
(1) Note. The rotor axis may be positively held with respect to the gyroscope support, or it may be heavily weighed to hold the rotor axis fixed with respect to the earth.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.44 where the force of gravitation, acting upon a weight, and reacting against the rotor axis erects an operative gyroscope.

Subclass: 5.12 [Patents]

This subclass is indented under subclass 5.1. Devices having a mechanism to impart spin to a rotor and a further means to release the holding means after the rotor is up to speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.7 for rotor drives.

Subclass: 5.14 [Patents]

This subclass is indented under subclass 5.1. Devices wherein further means is provided to adjust or vary the position held. This may be done by having the means which holds the rotor axis adjustable to vary the position held, or by having the first means restrain movement in one plane and a second means to position the rotor axis in that plane.

Subclass: 5.2 [Patents]

This subclass is indented under subclass 5. Gyroscopes wherein means is provided to prevent alignment of the rotor axis with a gimbal axis.

Subclass: 5.22 [Patents]

This subclass is indented under subclass 5. Gyroscopes combined with structure other than the gyroscope, except means to control and/or drive the mechanism.
(1) Note. The large majority of patents found here are of the stabilizing type and recite the device stabilized by name only. Where structure of the device over and above that necessary to mount the device is claimed, or where a particular relationship to the device is claimed, the patents have been classified with the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.4 for gyroscope control.
5.37 for drives for plural gyroscopes.
5.7 for drives for single gyroscopes.
64 for inertia or centrifugally controlled rotary transmitters.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclass 230, 236, and 275, for straight-line-light-ray instruments utilizing a gyroscope and subclasses 316+ and 318+, for direction sensing and indicating instruments utilizing a gyroscope.
73, Measuring and Testing, 504.2, for a gyroscope combined with a speed responsive device.
105, Railway Rolling Stock, 141, for monorail type railway rolling stock combined with gyroscopes and subclasses 150+, for suspended monorail type rolling stock combined with gyroscopes.
114, Ships, subclass 21.1 and 24, for gyroscopically controlled torpedo steering mechanism; subclass 122, for gyroscopic anti-rolling stabilizers combined with ships; and subclass 144, for gyroscopic controlled steering.
244, Aeronautics, subclass 79, for gyroscope actuated automatic aircraft control.
396, Photography, subclass 13 for an aerial camera which is gyroscopically stabilized.
446, Amusement Devices: Toys, 233 for gyroscopic toys, and subclass 462 for wheeled toys having inertia-operated driving means.
475, Planetary Gear Transmission Systems or Components, for gyroscopically controlled planetary gearing.

Subclass: 5.34 [Patents]

This subclass is indented under subclass 5. Gyroscopes comprising two or more gyroscopes.

Subclass: 5.37 [Patents]

This subclass is indented under subclass 5.34. Devices having means for driving the gyroscopes.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.7 for drives for single gyroscopes.

Subclass: 5.4 [Patents]

This subclass is indented under subclass 5. Gyroscopes having means to apply one or more forces to the rotor axis to control the movement of the rotor axis about its center of suspension.

Subclass: 5.41 [Patents]

This subclass is indented under subclass 5.4. Devices wherein one or more forces act to move the rotor axis to a given position, usually to a vertical position.
(1) Note. Where the force of the surrounding atmosphere against a plurality of vanes is used for erection, the patent will be found in this subclass.

Subclass: 5.42 [Patents]

This subclass is indented under subclass 5.41. Devices where at least two diverse forces are used for erection.
(1) Note. Pendulous gyroscopes having an additional means to erect them are here when both means are claimed, an cross-referenced to the subclasses indented hereunder for the separate means.

Subclass: 5.43 [Patents]

This subclass is indented under subclass 5.41. Devices wherein the force of a fluid jet is used for erection.

Subclass: 5.44 [Patents]

This subclass is indented under subclass 5.41. Devices wherein the gravitational force upon a weight is utilized for erection.
(1) Note. Pendulous gyroscopes with no other erecting controls are here.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.1 for weight actuated parking or caging devices.
5.42 for pendulous gyroscopes having an additional force utilized for erection.

Subclass: 5.45 [Patents]

This subclass is indented under subclass 5.41. Devices wherein the application of a frictional force is utilized for erection.
(1) Note. Where the force of the surrounding atmosphere against a plurality of vanes is used for erection, the patents will be found in subclass 5.41.

Subclass: 5.46 [Patents]

This subclass is indented under subclass 5.41. Devices wherein the force of a magnetic field is utilized for erection.

Subclass: 5.47 [Patents]

This subclass is indented under subclass 5.41. Devices where the torque of a prime mover constitutes the force used for erection.

Subclass: 5.5 [Patents]

This subclass is indented under subclass 5.4. Devices having
means to dampen the oscillation of the gimbals, or of the rotor axis.

Subclass: 5.6 [Patents]

This subclass is indented under subclass 5. Gyroscopes having a means to sense the relative position or change of position of the rotor axis, and/or its gimbals.
(1) Note. The sensing means normally actuates or controls a signal, indicator or a control for another device.

Subclass: 5.7 [Patents]

This subclass is indented under subclass 5. Gyroscopes having means to drive the rotor.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5.12 for rotor spin mechanism combined with cage release mechanisms.

Subclass: 5.8 [Patents]

This subclass is indented under subclass 5. Gyroscopes peculiarly constructed for operating with the spin axis in a vertical position only.

Subclass: 5.9 [Patents]

This subclass is indented under subclass 5. Gyroscopes peculiarly constructed for operating with the spin axis in a horizontal position only.

Subclass: 6 [Patents]

This subclass is indented under the class definition.
Mechanical movements and/or gearing, combined as a unit, for initiating the starting of a machine, in which operative engagement with the machine to be started is initiated and controlled and power is applied to the gearing by some conventional means.
(1) Note. See the Index, under "Starter" and "Starting".

SEE OR SEARCH THIS CLASS, SUBCLASS:
139 for intermittent unidirectional motion type engine starters.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, sub- classes 179.1+ for other starting devices for internal combustion engines.
185, Motors: Spring, Weight, or Animal Powered, 6, 10+, 32, and 39, for structure for winding motors of the weight and spring types.
290, Prime-Mover Dynamo Plants, subclass 10, 22-38, 46-68, for dynamo-electric starter-generator structure.

Subclass: 7 [Patents]

This subclass is indented under subclass 6. Starters in which the operative engagement with the machine to be started is automatic.

Subclass: 8 [Patents]

This subclass is indented under subclass 6. Starters in which meshing of the gears with the machine to be started takes place in a radial direction.

Subclass: 9 [Patents]

This subclass is indented under subclass 6. Starters in which meshing of the gearing with the machine to be started is accomplished by a cam device other than a screw.

Subclass: 10 [Patents]

This subclass is indented under the class definition. Assemblies particularly adapted for mechanically rotating one or more shafts of electronic tuning devices into desired angular positions.
(1) Note. The art is directed to the positioning of radio tuning shafts having indicating means and/or variable condensers associated therewith for adjustment.
(2) Note. Electrically actuated dial operators are not here, even though claimed in combination with mechanical operators for these subclasses. They will be found in Class 192, Clutches and Power-Stop Control, subclasses 138+, and in Class 318, Electricity: Motive Power Systems, appropriate subclasses (including particularly subclasses 560+, which has the follow-up type motor controls). The line between these two classes is stated in the class definition of Class 318, Lines With Other Classes, Load Device Driven by the Motor (Including Power, Motion, Force, or Torque Transmitting Devices, Motor Systems and Power, Motion, Force, or Torque Transmitting Devices, and under the reference to Class 192 under "SEARCH CLASSES" at the end of the class (318) definition.
(3) Note. These subclasses will take the recitation of a condenser, inductance, transformer or a radio tuner by name only when claimed in combination with shaft positioning means. Whenever significant structure of the condenser, inductance, transformer, or tuner are recited, the devices will be classified in Class 455, Telecommunications, particularly subclasses 150.1+ where radio tuner structure is recited. Class 334, Tuners, appropriate subclasses for radio tuner structure, per se, or Class 336, Inductor Devices, appropriate subclasses where variable transformer or inductance structure is recited. Where the operator is merely a screw gearing and the tuner is recited by name only, the search should be continued in this class (74), subclass 424.8.
(4) Note. These subclasses will take the shaft positioning means with respect to its support in combination with indicating means to indicate the position, adjustment or movement of the shaft. And see the Search Note to the Signals and Indicators class, below.

SEE OR SEARCH THIS CLASS, SUBCLASS:
20 through 110 inclusive, for nonintermittent type mechanical movements.
111 for intermittent grip type mechanical movements.
424.8 for screw gearing, and see (3) Note supra.
469 for control lever and linkage systems.
526 for stops for levers.
553 for knob or dial operators.
640 for gearing.
813 for assemblies of general utility, including turret mechanisms for metal working machines having means to index rotary members, and see the Notes thereto.

SEE OR SEARCH CLASS:
116, Signals and Indicators, 200+, provides for indicators attached to, or associated with some movable device to indicate the movement, adjustment or position of such device. Indented 241, provides for radio tuner position indicators. Class 116 will take shaft positioning means with respect to its support (even though in the form of a mechanical movement) in combination with the indicating means when only the part of the shaft positioning means with respect to its support necessary to operate the indicator is claimed, i.e., where no structure for positioning the shaft is recited which does not operate the position indicator.
192, Clutches and Power-Stop Control, 138, for power-stop limit controls and see (2) Note, supra.
235, Registers, appropriate subclasses for related operating devices for registers and particularly 12, for those which are key board operated.
318, Electricity: Motive Power Systems, appropriate subclasses for controlled electric motor operators, particularly 560, for servo controlled operators and see (2) Note, supra.
336, Inductor Devices, appropriate subclasses for variable transformer or inductance structure combined with shaft positioning means, and see (3) Note, above.
361, Electricity: Electrical Systems and Devices, 271 for specific variable condenser structure.
403, Joints and Connections, 230 for joints between the end of a shaft and a plate-like member.
455, Telecommunications, 150.1 for radio receivers with tuners, see (3) Note.

Subclass: 10.1 [Patents]

This subclass is indented under subclass 10. Devices having interengaging means by which the rotation of the shaft may be halted at a plurality of predetermined angular positions.

Subclass: 10.15 [Patents]

This subclass is indented under subclass 10.1. Devices having means interposed between a single initiator and the shaft for rotating the shaft through a series of successive predetermined positions, the rotation of the shaft being halted at each such successive position.

SEE OR SEARCH THIS CLASS, SUBCLASS:
126 for mechanical movements for changing reciprocating motion to intermittent unidirectional motion, and particularly subclass 142 for lever actuators.

Subclass: 10.2 [Patents]

This subclass is indented under subclass 10.1. Devices having a rotatable stop element for halting shaft movement and a movable abutment for the stop element, and means for moving the abutment into a position in which the stop element may contact the abutment.
(1) Note. Electric motor control of the rotatable stop elements and/or the movable abutments will be found in Class 192, Clutches and Power-Stop Control, subclasses 138+, and particularly subclass 142; and the appropriate subclass of Class 318, Electricity: Motive Power Systems, subclasses 560+, for position servo control systems particularly subclass 614, friction braking at balance; see (2) Note to this class (74), subclass 10.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 138, for power-stop limit controls and see (1) Note.
318, Electricity: Motive Power Systems, appropriate subclasses for electric motor control, and particularly 560, for position servo control type particularly subclass 614, for friction braking at balance; and see (1) Note.

Subclass: 10.22 [Patents]

This subclass is indented under subclass 10.1. Devices in which the shaft operator is a dial and is provided with a series of single finger-receiving openings.

SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, subclass 11, for dial operated switches.
379, Telephonic Communications, subclass 363 for a telephone dial mechanism.

Subclass: 10.27 [Patents]

This subclass is indented under subclass 10.1. Devices having more than one operator for controlling the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
10.54 for separate operators for each of a plurality of speed drives of the nonselective type dial operators.
479 for plural input single output lever and linkage systems.
625 for alternate manual and power operators.
665 for plural input single output gearing.

SEE OR SEARCH CLASS:
235, Registers, appropriate subclasses for related operating devices for registers and particularly 12, for those which are keyboard operated.
475, Planetary Gear Transmission Systems or Components, 1 for plural power sources for driving planetary gearing.

Subclass: 10.29 [Patents]

This subclass is indented under subclass 10.27. Devices wherein a cam and follower is interposed between the operator and the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
10.6 for nonselective cam and follower type dial operators.
567 for cam and/or follower structure, per se.

Subclass: 10.31 [Patents]

This subclass is indented under subclass 10.29. Devices wherein the cam is adjustable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
568 for adjustable cams, per se.

Subclass: 10.33 [Patents]

This subclass is indented under subclass 10.31. Devices where the cam is carried by a sliding operator.

Subclass: 10.35 [Patents]

This subclass is indented under subclass 10.29. Devices wherein the follower is adjustable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
569 for followers, per se.

Subclass: 10.37 [Patents]

This subclass is indented under subclass 10.35. Devices where the cam is carried by a sliding operator.

Subclass: 10.39 [Patents]

This subclass is indented under subclass 10.27. Devices wherein a rack and pinion gearing is interposed between at least one of the operators and the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for rack and pinion gearing, per se.

Subclass: 10.41 [Patents]

This subclass is indented under subclass 10.1. Devices in which a detent or click device tends to hold the shaft in the predetermined positions.

SEE OR SEARCH THIS CLASS, SUBCLASS:
527 for detents, per se.

Subclass: 10.45 [Patents]

This subclass is indented under subclass 10. Devices in which a plurality of shafts are rotated by a single operator.

SEE OR SEARCH THIS CLASS, SUBCLASS:
471 for single input plural output lever and linkage systems.
665 for single input plural output gearing.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, for plural outputs from planetary gearing.

Subclass: 10.5 [Patents]

This subclass is indented under subclass 10. Devices in which the shaft may be rotated at a plurality of speeds.
(1) Note. In most cases, a fast speed is used for coarse rotational adjustment and a slow speed for fine adjustment.

SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for interchangeably locked nonplanetary gearing.

Subclass: 10.52 [Patents]

This subclass is indented under subclass 10.5. Devices wherein a planetary gearing is interposed between the operator and the shaft.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, for planetary gearing, per se.

Subclass: 10.54 [Patents]

This subclass is indented under subclass 10.5. Devices having separate operators for each speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
10.52 for separate operators for planetary gearing.
665 for plural input single output nonplanetary type gearing.

Subclass: 10.6 [Patents]

This subclass is indented under subclass 10. Devices wherein a cam and follower is interposed between the operator and the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
10.29 for selective type cam and follower dial operators.
567 for cam and/or follower structure, per se.

Subclass: 10.7 [Patents]

This subclass is indented under subclass 10. Devices wherein the operator includes a flexible strand operating in tension only, usually in the nature of a belt and pulley drive, although the strand may be anchored to one of the pulleys.

SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses for a belt and pulley drive in a power transmission.

Subclass: 10.8 [Patents]

This subclass is indented under subclass 10. Devices wherein gearing is interposed between the operator and the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
640 for gearing, per se.

Subclass: 10.85 [Patents]

This subclass is indented under subclass 10.8. Devices where the gearing is of the worm or screw type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for screw type gearing, per se.
425 for worm type gearing, per se.

Subclass: 10.9 [Patents]

This subclass is indented under subclass 10. Devices wherein a lever and linkage system is interposed between the operator and the shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
469 for lever and linkage systems, per se.

Subclass: 11 [Patents]

This subclass is indented under the class definition. Devices comprising a subordinate power transmitting assembly,
additional to and driven by one of the elements of a main power line, or by the prime mover therefor.
(1) Note. Power take offs from a prime mover for this class (74) are here unless they are made from a shaft extension of a prime mover, in which case, see this class, subclass 15.63. Take offs for engine accessory drives will be found in Class 123, Internal-Combustion Engines, subclass 198; take offs involving vehicle structure are found in Class 180, Motor Vehicles, subclasses 53.1+; and take offs for vehicle driven pumps are in Class 417, Pumps, subclasses 231+.

SEE OR SEARCH THIS CLASS, SUBCLASS:
15.63 and see (1) Note, supra.
16 plural driven devices actuated from a power table or stand.
640 for gearing, per se.
665 for plural driven devices of general application.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 198, for take offs for engine accessories (and see (1) Note, supra).
172, Earth Working, 35 for an earth working implement comprising an earth working tool driven by a power take-off, and subclasses 492+ and the subclasses there noted for an earth working implement adjusted by a power take-off.
180, Motor Vehicles, 53.1, for power take offs involving vehicle structure (and see (1) Note, supra).
408, Cutting by Use of Rotating Axially Moving Tool, 124, for drilling machines in which the feeding movement between tool and work is effected by means actuated by the rotation of the tool spindle.
475, Planetary Gear Transmission Systems or Components, for gearing driving plural load devices.

Subclass: 12 [Patents]

This subclass is indented under subclass 11. Assemblies, in which the auxiliary driven element is a speedometer.

Subclass: 13 [Patents]

This subclass is indented under subclass 11. Mechanisms, in which the power is taken directly from or transmitted directly to, the wheels of a vehicle.

SEE OR SEARCH CLASS:
30, Cutlery, 166.3 and 388+, for portable power saws.
180, Motor Vehicles, 53.1, for power take-offs combined with vehicle structure.
185, Motors: Spring, Weight, or Animal Powered, 15, for animal powered motors.

Subclass: 14 [Patents]

This subclass is indented under subclass 13. Mechanisms, in which the mechanisms are provided with power transmitting or receiving elements which contact with and support at least one wheel of the vehicle.

Subclass: 15 [Patents]

This subclass is indented under subclass 13. Mechanisms, in which power is delivered from or to a vehicle wheel through a device attached thereto, the wheel being out of peripheral contact with any other object.

SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses for pulley structure and for pulleys used in endless belt power transmissions.

Subclass: 15.2 [Patents]

This subclass is indented under subclass 11. Devices having a plurality of power take-off shafts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for plural driven devices actuated from a power table or stand.
665 for plural driven devices of general application.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 48.1 for plural clutch-assemblages, and especially subclasses 48.8+ for such assemblages associated with three or more shafts, one of which may be a power take-off shaft.

Subclass: 15.4 [Patents]

This subclass is indented under subclass 11. Devices in which independent gearing means are provided to effect a change in output speed of, and/or a forward or reverse drive for, the take-off.

SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for nonplanetary change speed gearing.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, for planetary change speed gearing.

Subclass: 15.6 [Patents]

This subclass is indented under subclass 11. Devices in which either a prime mover shaft, a main power line shaft, or an auxiliary driven shaft is extended to constitute a power take-off.
(1) Note. The so-called "power take-off shaft" to be found on some type of tractors is considered to be an auxiliary driven shaft.

SEE OR SEARCH CLASS:
403, Joints and Connections, appropriate subclasses for shaft couplings of a nonflexible type.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, appropriate subclasses for a flexible coupling between a torque transmitting shaft and a driven member.

Subclass: 15.63 [Patents]

This subclass is indented under subclass 15.6. Devices in which a shaft in a prime mover for the power line (e.g., a crank shaft or a cam shaft) is extended to constitute a take-off.

SEE OR SEARCH THIS CLASS, SUBCLASS:
11 for other take-offs from prime movers, and see (1) Note to that definition for the line between these two subclasses.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 185.1, for engine crankshaft extensions employed for engine starting and subclass 198 for engine accessories driven by a shaft extension.
417, Pumps, 231, for vehicle engine driven power take-offs for pumps.

Subclass: 15.66 [Patents]

This subclass is indented under subclass 15.6. Devices in which a shaft in a change speed transmission is extended to constitute the take-off.

Subclass: 15.69 [Patents]

This subclass is indented under subclass 15.6. Devices in which the propeller shaft of a vehicle is extended to constitute a take-off.
(1) Note. The power take-off is normally at the differential.

Subclass: 15.80 [Patents]

This subclass is indented under subclass 11. Devices which are driven by a connection in the main power transmitting line and intermediate its driving and driven ends.
(1) Note. A power transmitting line is a power path comprising, e.g., one or more clutches and/or gearing and/or brakes, having a prime mover at one end and a load at the other.

Subclass: 15.82 [Patents]

This subclass is indented under subclass 15.8. Devices in which the power transmitting line is used for vehicle propulsion.

Subclass: 15.84 [Patents]

This subclass is indented under subclass 15.82. Devices in which the connection to the transmitting line is located between the prime mover output shaft and the transmission.

Subclass: 15.86 [Patents]

This subclass is indented under subclass 15.82. Devices in which the driving connection comprises a gear in mesh with a second gear, which second gear is part of the transmission gearing.

Subclass: 15.88 [Patents]

This subclass is indented under subclass 15.82. Devices in which the driving connection to the transmitting line is located between the driven shaft of the transmission and the propeller shaft.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 48.1 for plural clutch-assemblages, and especially subclasses 48.8+ for such assemblages associated with three or more shafts, one of which may be a power take-off shaft.

Subclass: 16 [Patents]

This subclass is indented under the class definition. Portable assemblies designed to drive one or more auxiliary attachments.
(2) Note. For stands, per se, see the search notes below.

SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 49.1 for a machine having a brush as its sole type of cleaning instrument, and that is especially adapted for cleaning a floor, wall, or ceiling.
108, Horizontally Supported Planar Surfaces, 20 for a power driven horizontally supported surface of general utility.
248, Supports, 637 for machinery supports.
310, Electrical Generator or Motor Structure, subclass 47 and 50 for portable or hand held electric motors.
312, Supports: Cabinet Structure, 21, for stands per se.
366, Agitating, appropriate subclasses, particularly 197 and 208+.
433, Dentistry, 103 for dental engines.

Subclass: 17 [Patents]

This subclass is indented under the class definition. Assemblies particularly adapted for the operation of a washing and wringing machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for interchangeably locked, single clutch shaft, single forward and reverse gearing.
385 for interchangeably locked, pivotally supported bevel gearing.

SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, 21, for textile fluid treating apparatus combined with fluid extraction of the squeezing type.

Subclass: 17.5 [Patents]

This subclass is indented under the class definition. Devices for compelling a reciprocating part to be actuated to its full extent before it can be returned.

SEE OR SEARCH CLASS:
81, Tools, subclass 313 for pliers and plural-handle wrenches with jaw-movement completion means.

Subclass: 17.8 [Patents]

This subclass is indented under the class definition. Devices having an imperforate member functioning as a seal for an aperture in a partition or for a passageway, the member being flexible at least in part to permit movement with respect to the partition and being fixed to the partition or walls of the passageway, there being means contacting one side of the seal member to receive or transfer motion from or to the member, and there being relative motion between the seal member and the means at the point of contact.
(1) Note. The seal member may include bearing surfaces or the like to minimize the effect of the relative motion on the seal.

SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for flexible seals pierced by a rod, which seal is fixed to its support and to the rod.

SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, subclass 148 for electric lamp and discharge devices provided with means to transmit motion to an electrode through a movable envelope wall portion.

Subclass: 18 [Patents]

This subclass is indented under the class definition. Devices in which motion is transmitted through a sealed casing by means of a flexible sealing material attached to the casing and to a moving rod which passes through the
sealing material.

SEE OR SEARCH THIS CLASS, SUBCLASS:
566 for slot closers for levers.

SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, 34 for a bellows type expansible chamber device and subclasses 96+ for a diaphragm type expansible chamber device.
180, Motor Vehicles, subclass 90.6 for guards for pedals and gear shift levers.
277, Seal for a Joint or Juncture, for a generic sealing means or process, 634 for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable that is a flexible sleeve, boot, or diaphragm.
313, Electric Lamp and Discharge Devices, 146, for electronic tubes and electric lamps having a sealed envelope and provided with means for transmitting force from the outside of the envelope to the interior of the envelope for the purpose of moving an electrode within the envelope.
403, Joints and Connections appropriate subclasses for a mere connection comprising a flexible diaphragm or bellows joining a plate or wall and a rod passing through an aperture therein.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 52 for a flexible shaft combined with a housing; and subclasses 170+ for a housing for a rotary shaft.

Subclass: 18.1 [Patents]

This subclass is indented under subclass 18. Devices in which the rod pivots or nutates.

Subclass: 18.2 [Patents]

This subclass is indented under subclass 18. Devices in which the rod reciprocates longitudinally. Mechanical Movements. Devices under the class definition other than gearing for imparting motion to one body from the motion of another body, wherein the two motions, or some intermediate motion, are of different form, type or degree.

SEE OR SEARCH THIS CLASS, SUBCLASS:
469 for control lever and linkage systems.
640 for gearing.
828 for mechanical movement having "on the fly" adjustment of the driven member.

SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, appropriate subclasses for methods of, and apparatus for, feeding material without utilizing the leading or trailing ends to effect movement of the material.

Subclass: 20 [Patents]

Mechanical Movements for converting oscillating motion to the compound motion of reciprocation and alternating rotary motion.

Subclass: 21 [Patents]

Mechanical Movements for converting oscillating motion to the compound motion of reciprocation and intermittent rotary motion.

Subclass: 22 [Patents]

Mechanical Movements for converting rotary motion to the combined motion of reciprocation and rotary motion.

SEE OR SEARCH CLASS:
241, Solid Material Comminution or Disintegration, subclass 205, for apparatus using this mechanical movement.
242, Winding, Tensioning, or Guiding, subclass 241 and 242 for drive mechanisms in fishing reels that convert rotary input into both reciprocation and rotation of an output.
414, Material or Article Handling, 431 for apparatus for advancing and rotating an elongated article not intended to remain associated with the apparatus (e.g., a tube to be worked on) by means adapted to engage the article between its ends.

Subclass: 23 [Patents]

Mechanical Movements for converting rotary motion to the compound motion of reciprocation and alternating rotary motion.

Subclass: 24 [Patents]

Mechanical Movements for converting rotary motion to the compound motion of reciprocation and intermittent rotary motion.

Subclass: 25 [Patents]

Mechanical Movements for converting rotary motion to or from reciprocating or oscillating motion.

SEE OR SEARCH CLASS:
30, Cutlery, 215, for rotary power driven multiple shearing position shears.
241, Solid Material Comminution or Disintegration, 262, for apparatus using this mechanical movement.
242, Winding, Tensioning, or Guiding, 241, 271+, 447.1+, and 476.7+ for drive mechanisms that convert a rotary input motion into reciprocation or oscillation of a line guide.
433, Dentistry, 118 for reciprocating or oscillating dental instruments receiving rotary power.

Subclass: 26 [Patents]

This subclass is indented under subclass 25. Mechanisms, especially adapted for shaking screens in which the screen is not claimed as a positive element and excepting those driven by unbalanced weights.

SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for screens driven by unbalanced weights.

SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, 750.1, for reciprocating conveyors using this mechanical movement.
209, Classifying, Separating, and Assorting Solids, for
driving mechanisms in combination with the screen.

Subclass: 27 [Patents]

This subclass is indented under subclass 25. Mechanisms for converting rotary motion to or from reciprocating or oscillating motion of a carriage in which the driven member is driven by different types of mechanism during different parts of its stroke.

SEE OR SEARCH CLASS:
101, Printing, 292, for web type presses and subclasses 316+, for other type presses having reciprocating beds for bed and platen machines.

Subclass: 28 [Patents]

This subclass is indented under subclass 27. Mechanisms, especially adapted for moving the tone arm of a phonograph across the record.

SEE OR SEARCH CLASS:
369, Dynamic Information Storage or Retrieval, 215 for such subject matter combined with tone arm structure.

Subclass: 29 [Patents]

This subclass is indented under subclass 25. Mechanisms, in which the mechanism involved is a rack and pinion and cannot be classified in any of the subclasses under this subclass.

Subclass: 30 [Patents]

This subclass is indented under subclass 29. Mechanisms, in which the rack moves in and out of engagement with the pinion.

Subclass: 31 [Patents]

This subclass is indented under subclass 29. Mechanisms, in which the pinion moves in and out of engagement with the rack.

Subclass: 32 [Patents]

This subclass is indented under subclass 29. Mechanisms, in which the teeth on the pinion cover less than 360 degrees of the circumference of the pinion.

Subclass: 33 [Patents]

This subclass is indented under subclass 29. Mechanisms, in which the pinion is always in mesh with the rack but its direction of rotation is alternated.

Subclass: 34 [Patents]

This subclass is indented under subclass 29. Mechanisms, in which the pinion or pinions are constantly in mesh with the rack but are clutched and declutched to the shaft by which they are carried.

Subclass: 35 [Patents]

This subclass is indented under subclass 34. Mechanisms, in which the pinion or pinions are constantly in mesh with the rack but are clutched and declutched to the shaft by which they are carried, the pinions being of the bevel type.

Subclass: 36 [Patents]

This subclass is indented under subclass 25. Mechanisms, in
which the mechanisms involved either prevents the device from stopping on dead center or has some auxiliary mechanism for throwing the device off of dead center.

Subclass: 37 [Patents]

This subclass is indented under subclass 25. Mechanisms, which change the motion by means of a chain or belt.

Subclass: 38 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, lever, toggle, and slide.

Subclass: 39 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, lazy-tong, and slide.

Subclass: 40 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, pitman, lever, and slide.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 78, for variable clearance, four cycle engines.

Subclass: 41 [Patents]

This subclass is indented under subclass 40. Mechanisms, including a crank, pitman, lever and slide of the pump jack type.

Subclass: 42 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, pitman, and lever.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 217, for multiple shearing position shears using this mechanical movement.

Subclass: 43 [Patents]

This subclass is indented under subclass 42. Mechanisms, including a crank, pitman, and a plurality of levers.

Subclass: 44 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, pitman, and slide.

Subclass: 45 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank, lever, and slide.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 218, for multiple shearing position shears using this mechanical movement.

Subclass: 46 [Patents]

This subclass is indented under subclass 45. Mechanisms, including a crank, lever, and slide and the connection between part of the members including a rack.

Subclass: 47 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank and lever.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 219, for multiple shearing position shears using this mechanical movement.

Subclass: 48 [Patents]

This subclass is indented under subclass 47. Mechanisms, including a crank and lever with a slidable connection between the crank and lever.

Subclass: 49 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank and slide.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 220, for multiple shearing position shears using this mechanical movement.

Subclass: 50 [Patents]

This subclass is indented under subclass 49. Mechanisms, including a crank and slide with a slidable connection between the crank and slide.

Subclass: 51 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a crank and more than one pitman.

Subclass: 52 [Patents]

This subclass is indented under subclass 25. Mechanisms, including planetary gearing and a slide.

Subclass: 53 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a cam, lever, and slide.

Subclass: 54 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a cam and lever.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 219, for multiple shearing position shears using this mechanical movement.

Subclass: 55 [Patents]

This subclass is indented under subclass 25. Mechanisms, including a cam and slide.

SEE OR SEARCH THIS CLASS, SUBCLASS:
838 for a cam and slide adjusting a stroke "on the fly".

SEE OR SEARCH CLASS:
30, Cutlery, subclass 220, for multiple shearing position shears using this mechanical movement.

Subclass: 56 [Patents]

This subclass is indented under subclass 55. Mechanisms, including a cam and slide, the cam being of the axial type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
839 for axial type cams adjusting a stroke "on the fly".

Subclass: 57 [Patents]

This subclass is indented under subclass 56. Mechanisms, including a cam and slide, the cam being of the axial type and the cam surface being in the form of a groove in the cam surface.

Subclass: 58 [Patents]

This subclass is indented under subclass 57. Mechanisms, including two axially grooved cams or screws rotating in opposite directions, one of which drives or is driven by the reciprocated or oscillated member or slide in one direction and the other in the opposite direction.

Subclass: 59 [Patents]

This subclass is indented under subclass 57. Mechanisms, including an axially grooved cam connected to a slide, the cam being alternately rotated as the slide alternately changes its direction.

Subclass: 60 [Patents]

This subclass is indented under subclass 55. Mechanisms, including an axial cam and slide, the cam being of the wabbler type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
123 for intermittent wabbler gearing.

SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, 499 for expansible chamber motors utilizing wabbler type, axial cams and slides.
123, Internal-Combustion Engines, 56.2 for an internal-combustion engine which utilizes a rotary output shaft, parallel to the engine cylinders which is driven by a cam on the rotary output shaft.
475, Planetary Gear Transmission Systems or Components, 163 for planetary wabbler gearing.

Subclass: 61 [Patents]

This subclass is indented under subclass 25. Mechanisms, in which the mechanism involved makes use of unbalanced weights to produce the reciprocating or oscillating motion.

SEE OR SEARCH CLASS:
209, Classifying, Separating, and Assorting Solids, subclass 367, for apparatus utilizing this mechanical movement.

Subclass: 62 [Patents]

This subclass is indented under subclass 25. Mechanisms, in which the mechanism involved includes a cam having a plurality of intersecting slots, in which slide projections on a beam or connecting rod.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, 30.1, for ellipsographs.

Subclass: 63 [Patents]

Mechanical movements for changing rotary motion to rotary motion.

Subclass: 64 [Patents]

This subclass is indented under subclass 63. Mechanisms, in which the motion is changed by means of inertia or centrifugal means.

SEE OR SEARCH CLASS:
173, Tool Driving or Impacting, 93.5 for a tool impacting device which comprises a connection adapted to rotate a tool in low torque condition and yield in overload to deliver torsional impact.

Subclass: 65 [Patents]

This subclass is indented under subclass 63. Mechanisms in which the motion is changed by means of a crank, pitman, lever, and crank.

Subclass: 66 [Patents]

This subclass is indented under subclass 63. Mechanisms, in which the motion is changed by means of a crank, lever, and crank.

Subclass: 67 [Patents]

This subclass is indented under subclass 63. Mechanisms, in which the motion is changed by means of a crank, pitman, and crank.

Subclass: 68 [Patents]

This subclass is indented under subclass 63. Mechanisms, in which the motion is changed by means of cranks which are connected together by links.

Subclass: 69 [Patents]

This subclass is indented under subclass 63. Mechanisms, in which the motion is changed by cranks which are slidably connected together.

Subclass: 70 [Patents]

Mechanical Movements for converting rotary motion to alternating rotary motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:
318 -324, for alternating rotary gearing.

Subclass: 71 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by means of a mangle and gearing and the driving member is the shiftable member.
(1) Note. By mangle is meant a rack, wheel, or any other movable member having teeth on opposite sides, engaged by a pinion which meshes with the opposite sides alternately, to convert the continuous rotary motion of the pinion to an oscillating or reciprocating motion of the mangle rack, or wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
318 -324, for converting rotary to alternating rotary motion by gearing not of the mangle type.

SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, appropriate subclasses, for apparatus using this mechanical movement.

Subclass: 72 [Patents]

This subclass is indented under subclass 71. Mechanisms, in which the motion is changed by means of a mangle and gearing and the driven member is the shiftable member.

Subclass: 73 [Patents]

This subclass is indented under subclass 72. Mechanisms, the driven gear being shiftable and the teeth on the mangle being located along the center line of the mangle.

Subclass: 74 [Patents]

This subclass is indented under subclass 71. Mechanisms, in which the motion is changed by means of a mangle and gearing and the gearing is mutilated.

Subclass: 75 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by means of a crank, pitman, and lever.

Subclass: 76 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by means of a reciprocating rack.

Subclass: 77 [Patents]

This subclass is indented under subclass 76. Mechanisms, in which the motion is changed by means of a reciprocating rack driven by a crank and pitman.

Subclass: 78 [Patents]

This subclass is indented under subclass 76. Mechanisms, in which the motion is changed by means of a reciprocating rack driven directly by the crank.

Subclass: 79 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by means of an oscillating rack.

Subclass: 80 [Patents]

This subclass is indented under subclass 79. Mechanisms, in which the rack is mangle actuated.

Subclass: 81 [Patents]

This subclass is indented under subclass 79. Mechanisms, in which the rack is driven by a crank and pitman.

Subclass: 82 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by means of a flexible member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
95 for other mechanical movements using flexible connectors.

Subclass: 83 [Patents]

This subclass is indented under subclass 70. Mechanisms, in which the motion is changed by inertia devices.

SEE OR SEARCH THIS CLASS, SUBCLASS:
92 for other mechanical movements utilizing inertia devices.

Subclass: 84 [Patents]

Mechanical Movements for changing rotary motion to intermittent unidirectional motion.

SEE OR SEARCH THIS CLASS, SUBCLASS:
111 for mechanical movements of the intermittent grip type
which change rotary motion to intermittent unidirectional motion.
415 for pin tooth gearing.
436 for Geneva gears.

Subclass: 86 [Patents]

Mechanical Movements for converting rotary motion to gyratory motion.

SEE OR SEARCH CLASS:
241, Solid Material Comminution or Disintegration, 207, for comminutors utilizing this mechanical movement.

Subclass: 87 [Patents]

This subclass is indented under subclass 86. Mechanisms, in which the motion is changed by means of unbalanced weights.

SEE OR SEARCH CLASS:
209, Classifying, Separating, and Assorting Solids, 366, for apparatus using unbalanced weights.
241, Solid Material Comminution or Disintegration, subclass 210, for comminutors utilizing this mechanical movement.

Subclass: 88 [Patents]

Mechanical Movements for converting reciprocating or oscillating motion to intermittent unidirectional motion.

Subclass: 89 [Patents]

Mechanical movement for converting oscillating or reciprocating motion to or from alternating rotary motion, all such motions as defined in the Glossary of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for screw and nut devices, per se.
ALTERNATING MOTION
The intermittent movement along a path, first in one direction and then in the opposite along such path.
OSCILLATING MOTION
Alternating motion of less than 360 degrees along an arcuate path.
RECIPROCATING MOTION
Alternating motion along a straight-line path.
ROTARY MOTION
The turning of a rigid body about an internal axis such that a point on the body travels through an arcuate path, about the axis, having an extent of 360 degrees or more.

Subclass: 89.1 [Patents]

This subclass is indented under subclass 89. Mechanical movement comprising movable input and output elements, movable means drivingly interconnecting said elements and a movable member having substantial mass joined to either of said elements or said means by a force-transmitting connection which is effective to vary the speed of the movable member at some time during its operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
83 for other mechanical movement including inertia device.

Subclass: 89.11 [Patents]

Mechanical movement under subclasses 89.1 including a straight or curved member having a series of teeth or recesses to mesh with a gear, such series having determinate effective length.
(1) Note. A gear with minor mutilation taught as being nevertheless continuously usable, without reversal, is not considered to be a rack.

Subclass: 89.12 [Patents]

This subclass is indented under subclass 89.11. Mechanical
movement wherein the rack teeth or recesses lie in a straight line.

Subclass: 89.13 [Patents]

This subclass is indented under subclass 89. Mechanical movement comprising at least one pair of toothed elements, rotatable about nonparallel axes, having meshing toothed surfaces which are inclined to said axes.

SEE OR SEARCH THIS CLASS, SUBCLASS:
423 for other mechanism containing bevel gearing.

Subclass: 89.14 [Patents]

This subclass is indented under subclass 89. Mechanical movement comprising a rotatable screw member for meshing with a complementary toothed gear or rack.

SEE OR SEARCH THIS CLASS, SUBCLASS:
425 for other mechanism containing worm gearing.

Subclass: 89.15 [Patents]

This subclass is indented under subclass 89. Mechanical movement comprising a rotary element having spiral threads or grooves disposed concentrically about its axis of rotation and a second element enmeshed therewith for relative movement along said axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for other mechanism containing screw and nut elements.

Subclass: 89.16 [Patents]

This subclass is indented under subclass 89. Mechanical movement comprising a wheel having radially projecting teeth
located parallel to the axis of said wheel for meshing with another toothed member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
421 for other mechanism containing spur gearing.

Subclass: 89.17 [Patents]

This subclass is indented under subclass 89.16. Mechanical movement including a straight or curved member having a series of teeth or recesses to mesh with a gear, such series having determinate effective length.

Subclass: 89.18 [Patents]

This subclass is indented under subclass 89.17. Mechanical movement wherein the teeth or recesses lie in a curved line.

Subclass: 89.19 [Patents]

This subclass is indented under subclass 89.18. Mechanical movement comprising yieldable means which assists the motion of the movement in one direction or the other (e.g., spring, counter weight, etc.).

Subclass: 89.20 [Patents]

This subclass is indented under subclass 89. Mechanical movement including a yieldable transmission member engaged with the periphery of a pulley, or of a sprocket or other type wheel.

SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling Force, 266 for a apparatus for hauling or hoisting a load which includes a driven drum for pulling on or traveling along a cable, and wherein either the drum or the cable is attached to the load.
474, Endless Belt Power Transmission Systems or Components, Appropriate subclasses for power transmission via an endless belt.

Subclass: 89.21 [Patents]

This subclass is indented under subclass 89.2. Mechanical movement including a member with peripheral cogs or teeth for engaging the flexible drive connector.

Subclass: 89.22 [Patents]

This subclass is indented under subclass 89.2. Mechanical movement including a sheave or wheel with a grooved rim for receiving and frictionally cooperating with the flexible drive connector in driving or driven relationship.

Subclass: 96 [Patents]

Mechanical movements for converting oscillating motion to oscillating motion.

Subclass: 97.1 [Patents]

Snap action:
This subclass is indented under subclass 96. Mechanism wherein the energy of the driving member is stored during the beginning of the stroke and is imparted to the driven member during the latter part of the stroke to impart a rapid motion to the driven member.

SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, 402 for a switch of that class having a movable contact and an actuator, and wherein the contact is quickly or abruptly moved independently of the actuator during actuation, which movement frequently is accomplished by a spring connection between the contact and the actuator.
236, Automatic Temperature and Humidity Regulation, subclass 48 for a temperature control valve whose operating force is stored until such time as the valve can be moved suddenly through its total range.
251, Valves and Valve Actuation, subclass 75 for a valve having an actuator which imparts to the valve an accelerated motion during a particular portion of its movement.

Subclass: 97.2 [Patents]

Plate spring:
This subclass is indented under subclass 97.1. Mechanism wherein the driving member is a thin, resilient element which is in a distorted condition in either one of the two positions which it customarily occupies, and which, when moved by an external force away from one position in the direction of the other position, undergoes a reversal of distortion, resulting in a rapid movement between the two positions.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 89.29 for a clutch which is operated by a quick-throw spring.
267, Spring Devices, subclass 159 for a device of that class in the nature of a snap spring.

Subclass: 98 [Patents]

This subclass is indented under subclass 96. Mechanisms, in which the motion is changed by means of gears.

Subclass: 99 [Patents]

Mechanical movements for converting reciprocating motion to or from oscillating motion.

Subclass: 100.1 [Patents]

Snap action:
This subclass is indented under subclass 99. Mechanism wherein the energy of the driving member is stored during the beginning of the stroke and is imparted to the driven member during the latter part of the stroke to impart a rapid motion to the driven member.

SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, 402 for a switch of that class having a movable contact and an actuator, and wherein the contact is quickly or abruptly moved independently of the actuator during actuation, which movement frequently is accomplished by a spring connection between the contact and the actuator.
236, Automatic Temperature and Humidity Regulation, subclass 48 for a temperature control valve whose operating force is stored until such time as the valve can be moved suddenly through its total range.
251, Valves and Valve Actuation, subclass 75 for a valve having an actuator which imparts to the valve an accelerated motion during a particular portion of its movement.

Subclass: 100.2 [Patents]

Plate spring:
This subclass is indented under subclass 100.1. Mechanism wherein the driving member is a thin, resilient element which is in a distorted condition in either one of the two positions which it customarily occupies, and which, when moved by an external force away from one position in the direction of the other position, undergoes a reversal of distortion, resulting in a rapid movement between the two positions.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 89.29 for a clutch which is operated by a quick-throw spring.
267, Spring Devices, subclass 159 for a device of that class in the nature of a snap spring.

Subclass: 101 [Patents]

This subclass is indented under subclass 99. Mechanisms, in which the motion is changed by means of a compound lever and slide.

Subclass: 102 [Patents]

This subclass is indented under subclass 99. Mechanisms, in
which the motion is changed by means of a lever and slide.

Subclass: 103 [Patents]

This subclass is indented under subclass 102. Mechanisms, in which the motion is changed by means of a lever and slide and the path of the reciprocating member is a straight line.

Subclass: 104 [Patents]

This subclass is indented under subclass 102. Mechanisms in which the motion is changed by means of a lever and slide and the connection between the lever and slide is slidable.

Subclass: 105 [Patents]

This subclass is indented under subclass 102. Mechanisms, in which the motion is changed by means of a lever and slide which are connected together by a link.

Subclass: 106 [Patents]

This subclass is indented under subclass 102. Mechanisms, in which the motion is changed by means of a lever and slide which are connected together by a toggle.

SEE OR SEARCH CLASS:
81, Tools, subclass 363 and 367+ for toggle-actuated pliers.

Subclass: 107 [Patents]

This subclass is indented under subclass 102. Mechanisms, in which the motion is changed by means of a lever and slide which are connected together by cams.

Subclass: 108 [Patents]

This subclass is indented under subclass 102. Mechanisms, in which the motion is changed by means of a lever and slide which are connected together by a flexible member.

Subclass: 109 [Patents]

This subclass is indented under subclass 99. Mechanisms, in which the motion is changed by means of a rack and pinion.

Subclass: 110 [Patents]

Mechanical movements for changing reciprocating motion to reciprocating motion.

Subclass: 111 [Patents]

This subclass is indented under the class definition. Mechanisms, provided with parts adapted to impart step-by-step motion to a unidirectionally driven member.
(1) Note. For intermittent grip devices, of special application, see the arts to which they are applied.

SEE OR SEARCH THIS CLASS, SUBCLASS:
84 435, and 436, for specialized forms of intermittent grip mechanisms.

SEE OR SEARCH CLASS:
72, Metal Deforming, subclass 422 + for machines for feeding metal stock having intermittently reciprocated gripping mechanisms which grasp the bar of stock, advance to feed the same to a chuck, then release the stock, and return to their first position.
81, Tools, subclass 314 for pliers with incremental jaw movement.
188, Brakes, 82.1, for brakes applied to elements rotating relative to stationary elements to prevent retrograde
rotation while allowing forward rotation.
368, Horology: Time Measuring Systems or Devices, subclass 75, for electric clocks having an intermittent striking signal.

Subclass: 112 [Patents]

This subclass is indented under subclass 111. Mechanisms having a rotary driving member and provided with parts adapted to impart step-by-step motion to a unidirectionally driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for nonintermittent grip type movements for changing rotary and intermittent unidirectional movement.
435 for mutilated rotary gear bodies. 436, for Geneva gears.

SEE OR SEARCH CLASS:
352, Optics: Motion Pictures, 187 and 191+ for intermittent feed mechanisms for motion picture apparatus.

Subclass: 113 [Patents]

This subclass is indented under subclass 112. Mechanisms in which the transmission ratio is controlled automatically.

Subclass: 114 [Patents]

This subclass is indented under subclass 113. Mechanisms in which the transmission ratio is controlled automatically by speed responsive elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
601 for automatically adjustable cranks and wrist pins.

Subclass: 116 [Patents]

This subclass is indented under subclass 112. Mechanisms having a rotary crank or eccentric driving member and provided with parts adapted to impart step-by-step motion to a unidirectionally driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
118 120, and 510, for eccentric features.
595 for crank features.

Subclass: 117 [Patents]

This subclass is indented under subclass 116. Mechanisms, having an adjustable driving member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
121 for other adjustable throw cranks and eccentrics.
571 for adjustable eccentrics.
600 for adjustable cranks.

Subclass: 118 [Patents]

This subclass is indented under subclass 116. Mechanisms in which the parts include an intermediate lever pivoted to some supporting structure.

Subclass: 119 [Patents]

This subclass is indented under subclass 118. Mechanisms, in which the parts include an intermediate lever of adjustable ratio pivoted to some supporting structure.

Subclass: 120 [Patents]

This subclass is indented under subclass 116. Mechanisms, in
which the parts include rack and pinion transmitting elements.

Subclass: 121 [Patents]

This subclass is indented under subclass 120. Mechanisms, in which the parts include rack and pinion transmitting elements, and means are provided for varying the extent of effective movement of those elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
117 for adjustments other than by changing the throw for this mechanical movement.

Subclass: 122 [Patents]

This subclass is indented under subclass 116. Mechanisms, having a rotary cam driving member and provided with parts adapted to impart step-by-step motion to a unidirectionally driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
567 for cams, per se.

Subclass: 123 [Patents]

This subclass is indented under subclass 122. Mechanisms, in which the extent of movement of the transmitting parts may be varied.

SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for wabble type mechanical movements.
568 for adjustable cams.

Subclass: 124 [Patents]

This subclass is indented under subclass 123. Mechanisms and
having a radial cam.

SEE OR SEARCH THIS CLASS, SUBCLASS:
125 for other radial cam actuators.
568 for adjustable cams.

Subclass: 125 [Patents]

This subclass is indented under subclass 122. Mechanisms and having a radial cam.

SEE OR SEARCH THIS CLASS, SUBCLASS:
567 for cams.

Subclass: 125.5 [Patents]

This subclass is indented under subclass 112. Mechanisms in which the parts include periodically engageable clutch elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
322 through 324, for alternatively rotary gearing involving clutchable gears.

Subclass: 126 [Patents]

This subclass is indented under subclass 111. Mechanisms and having either an oscillating or reciprocating driving member and provided with parts adapted to impart step-by-step motion to a unidirectionally driven member.

Subclass: 127 [Patents]

This subclass is indented under subclass 126. Mechanisms, in which the parts include relatively movable screw and nut elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
57 for nonintermittent grip type movements involving axially grooved cams, and slides.

Subclass: 128 [Patents]

This subclass is indented under subclass 126. Mechanisms, in which the driving member is in the form of a slidable actuator.

SEE OR SEARCH THIS CLASS, SUBCLASS:
160 for slide gripper mountings.

Subclass: 129 [Patents]

This subclass is indented under subclass 128. Mechanisms, in which a slidable actuator is adapted to impart motion to the driven member in both directions of its movement or in which a plurality of slidable actuators are adapted to impart motion to the driven member in sequence.

Subclass: 130 [Patents]

This subclass is indented under subclass 126. Mechanisms, in which the driving member is provided with rack teeth.

SEE OR SEARCH CLASS:
401, Coating Implements With Material Supply, subclass 66, for a pencil, or the like, including a rack and pawl mechanism for advancing a piece of lead step-by-step to compensate for attrition.

Subclass: 131 [Patents]

This subclass is indented under subclass 130. Mechanisms, in which a single driving member having rack teeth is capable of imparting motion to the driven member in both directions of its movement or in which a plurality of driving members
having rack teeth are adapted to impart motion to the driven member in sequence.

Subclass: 132 [Patents]

This subclass is indented under subclass 131. Mechanisms, in which the driving member is provided with inwardly facing rack teeth and is effective in both directions of its movement to impart motion to the driven member.

Subclass: 133 [Patents]

This subclass is indented under subclass 130. Mechanisms, in which the rack is oscillatable.

Subclass: 134 [Patents]

This subclass is indented under subclass 133. Mechanisms, in which the oscillatable rack is adapted to impart motion to the driven member in both directions of its movement or in which a plurality of oscillatable racks are adapted to impart motion to the driven member in sequence.

Subclass: 135 [Patents]

This subclass is indented under subclass 134. Mechanisms, in which the rack is provided with inwardly facing teeth and is effective in both directions of its movement.

Subclass: 136 [Patents]

This subclass is indented under subclass 126. Mechanisms, in which a single driving member in the form of a strap, chain, belt, etc., is adapted to impart motion to the driven member in both directions of its movement or in which a plurality of straps are adapted to impart motion to the driven member in sequence.

Subclass: 137 [Patents]

This subclass is indented under subclass 136. Mechanisms, in which a spring or weight moves the strap in one direction.

Subclass: 138 [Patents]

This subclass is indented under subclass 126. Mechanisms, in which the driving member is in the form of a strap, chain, or belt and is effective in only one direction of movement to impart motion to the driven member.

Subclass: 139 [Patents]

This subclass is indented under subclass 138. Mechanisms in which the entire device is particularly designed for uses as an engine starter but is adapted for other uses.
(1) Note. This subclass includes only the intermittent grip type of engine starters capable of general use.
(2) Note. If the use is limited to engine starting, see the appropriate starter classes.

SEE OR SEARCH THIS CLASS, SUBCLASS:
6 for engine starters and see (1) Note supra.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 185.1, for mechanical starters, and see (1) Note supra.

Subclass: 140 [Patents]

This subclass is indented under subclass 139. Mechanisms, in which a spring or weight is adapted to return the strap to its initial position.

SEE OR SEARCH CLASS:
123, Internal Combustion Engines, 185.1, for mechanical starters, and see (1) Note supra.

Subclass: 141 [Patents]

This subclass is indented under subclass 138. Mechanisms, in which a spring or weight is adapted to return the strap to its initial position.

Subclass: 141.5 [Patents]

This subclass is indented under subclass 126. Mechanisms in which the driving member is a lever effective in its oscillation to impart motion to the driven member.
(1) Note. It should be noted that the movement of the lever and driven element is relative. Hence, if the "driven" element is held or fixed, and the support or pivot of the lever is compelled to move in the required manner by the oscillation or reciprocation of the lever, such structure will satisfy the terms of this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:
156 for lever gripper mountings.

SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling Force, subclass 31, 105+, 206+, 210, 237+, and 245 for similar mechanisms for imparting a step-by-step movement to a traveling bar or rack.

Subclass: 142 [Patents]

This subclass is indented under subclass 141.5. Mechanisms in which the intermittently driven member revolves around a relatively fixed axis.

Subclass: 143 [Patents]

This subclass is indented under subclass 142. Mechanisms in which a single driving member in the form of a lever, is adapted to impart motion to the driven member in both directions of oscillation of the lever or in which a plurality of levers are adapted to impart motion to the driven member in sequence.

SEE OR SEARCH THIS CLASS, SUBCLASS:
158 for multiple acting lever gripping mountings.

Subclass: 144 [Patents]

This subclass is indented under subclass 111. Devices, adapted to form parts of more complex intermittent grip mechanisms and to impart step-by-step motion directly to a unidirectionally driven member.
(1) Note. The line between these subclasses and Class 192, Clutches and Power-Stop Control, subclass 41, with respect to one way clutches and clutch operators is as follows: Class 192, will take the clutch, per se, with or without the clutch operator. The inclusion of additional elements; e.g., a holding pawl for the part driven by the clutch, will cause classification in this class (74).

SEE OR SEARCH THIS CLASS, SUBCLASS:
505 for hand operated gear, drum and cable controllers.
575 for pawls and ratchets, per se.

SEE OR SEARCH CLASS:
81, Tools, 58, for clutched head wrenches or screwdrivers, and subclasses 28+ for a ratchet bit stock.
188, Brakes, 82.1, for brakes applied to elements rotating relative to stationary elements to prevent retrograde rotation while allowing forward rotation.
192, Clutches and Power-Stop Control, for one way clutches and actuators, and see (1) Note supra.
254, Implements or Apparatus for Applying Pushing or Pulling Force, 108, 206+, and 237+ for pawl operated step-by-step traveling bar type implements or apparatus.
368, Horology: Time Measuring Systems or Devices, 59 for secondary electric clock mechanism.
401, Coating Implements With Material Supply, 65, for a
pencil or the like, including a chuck for advancing a piece of lead step-by-step to compensate for attrition.

Subclass: 145 [Patents]

This subclass is indented under subclass 144. Devices, including a handle capable of movement in a plurality of planes.

Subclass: 146 [Patents]

This subclass is indented under subclass 145. Devices, including a handle capable of movement in a plurality of planes and adapted to impart either forward or reverse motion to the driven member.

Subclass: 147 [Patents]

This subclass is indented under subclass 145. Devices, in which the handle is swingable about an axis transverse to the axis of rotation of the driven member.

Subclass: 148 [Patents]

This subclass is indented under subclass 144. Devices, in which means are provided for releasing a gripper from the driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
679 for gearing having this mechanical movement in one of a plurality of power paths to or from the gearing.

SEE OR SEARCH CLASS:
188, Brakes, subclass 82.3, for one-way brakes which include means to render them inoperative to prevent retrograde motion of a rotating member.
475, Planetary Gear Transmission Systems or Components, subclass 217 for disc and wheel type gearing in one of
plural power paths to planetary gearing.

Subclass: 149 [Patents]

This subclass is indented under subclass 148. Devices, in which the pawl disengaged is the driving or power transmitting pawl.

Subclass: 150 [Patents]

This subclass is indented under subclass 149. Devices, in which means are provided for automatically disengaging a power transmitting pawl from the driven member.

Subclass: 151 [Patents]

This subclass is indented under subclass 150. Devices, in which means are provided for automatically disengaging a power transmitting pawl from the driven member during the idle or return movement of the pawl.

Subclass: 152 [Patents]

This subclass is indented under subclass 151. Devices, in which a holding pawl is adapted to prevent retrograde movement of the driven member.

SEE OR SEARCH CLASS:
235, Registers, subclass 131, for overthrow preventers.

Subclass: 153 [Patents]

This subclass is indented under subclass 150. Devices, in which means are provided for automatically disengaging a power transmitting pawl from the driven member during the power or working movement of the pawl.

Subclass: 154 [Patents]

This subclass is indented under subclass 149. Devices, in which means are provided for disengaging a power pawl from the driven member and an auxiliary holding pawl is adapted to prevent retrograde movement of the driven member.

Subclass: 155 [Patents]

This subclass is indented under subclass 148. Devices, provided with a holding pawl for preventing retrograde movement of the driven member, the said holding pawl being disengaged from the driven member by the movement of some part of the device.

Subclass: 156 [Patents]

This subclass is indented under subclass 144. Devices, in which the element which engages the driven member is mounted on a lever actuator.

SEE OR SEARCH THIS CLASS, SUBCLASS:
118 and 142+, for lever actuated intermittent grip type devices.

Subclass: 157 [Patents]

This subclass is indented under subclass 156. Devices, in which the element which engages the driven member may be shifted to impart either forward or reverse motion to the driven member.

Subclass: 158 [Patents]

This subclass is indented under subclass 156. Devices, in
which a plurality of elements are adapted to engage one or more driven members and are mounted on one or more lever actuators.

Subclass: 159 [Patents]

This subclass is indented under subclass 158. Devices, in which the driven member is in the form of a single ratchet or clutch to provide only one set of teeth for cooperation with the plurality of elements.

Subclass: 160 [Patents]

This subclass is indented under subclass 144. Devices, having the element adapted to engage the driven member mounted on a slidable actuator.

SEE OR SEARCH THIS CLASS, SUBCLASS:
128 for other slide actuators.

Subclass: 161 [Patents]

This subclass is indented under subclass 160. Devices, in which a plurality of elements are adapted to engage one or more driven members and are mounted on one or more slide actuators.

SEE OR SEARCH THIS CLASS, SUBCLASS:
129 for other multiple acting slide actuators.

Subclass: 162 [Patents]

This subclass is indented under subclass 144. Devices, limited to the combination of the details of the power imparting element, per se, and the driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
575 for pawls and ratchets, per se.

SEE OR SEARCH CLASS:
81, Tools, 58, for clutched head wrenches or screwdrivers, and subclasses 28+ for a ratchet bit stock.
192, Clutches and Power-Stop Control, 41, for automatic one way engaging clutches.

Subclass: 163 [Patents]

This subclass is indented under subclass 162. Devices, in which the power imparting element is in the form of a band surrounding the driven member.

Subclass: 164 [Patents]

This subclass is indented under subclass 163. Devices, in which the power imparting element is in the form of a band surrounding the driven member and which actuates the driven member intermittently by being clamped thereto and unclamped therefrom.

Subclass: 165 [Patents]

This subclass is indented under subclass 162. Devices, in which the driven member is in the form of an endless band, such as a chain or belt.

Subclass: 166 [Patents]

This subclass is indented under subclass 165. Devices, provided with means to prevent slippage between the power imparting elements and the driven member.

Subclass: 167 [Patents]

This subclass is indented under subclass 162. Devices, in which the power imparting element is in the form of a ratchet bar or rack.

Subclass: 168 [Patents]

This subclass is indented under subclass 167. Devices, in which a plurality of power imparting elements in the form of ratchet bars or racks actuate the driven member.

Subclass: 169 [Patents]

This subclass is indented under subclass 162. Devices, in which the power imparting element is in the form of a pawl adapted to cooperate with the teeth of a ratchet bar which comprises the driven member.

SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling Force, 108, 206+, and 237+ for pawl operated step-by-step traveling bar type implements or apparatus.

Subclass: -2 [Patents]

Gearing Frictional.
This subclass is indented under subclass 640. Gearing, comprising rotary elements having substantially smooth surfaces in contact with each other, or in line or point contact with an interposed member, to produce a relative rolling motion between them due to contact of surfaces.

Subclass: 216.3 [Patents]

This subclass is indented under subclass 640. Gearing which includes a guide tube in the form of a closed path, a plurality of free running independent bodies (e.g., balls) within and substantially filling said tube, and one or more notched rotary elements tangentially engaging the bodies axially of the run thereof to thereby transmit and/or receive power axially of the run by the compressive action of the bodies upon each other in the forward run of the path.

SEE OR SEARCH THIS CLASS, SUBCLASS:
458 for worm and helical gearing in which power is transmitted through the medium of balls received in pockets formed by the grooves of the meshing gears and in which the balls serve as antifriction elements.
499 and 500, for the gearing there classified and including the use of balls as antifriction elements between the meshing grooves of the gears.

SEE OR SEARCH CLASS:
60, Power Plants, subclass 326, for a motor driven by a recirculated motive fluid comprising a mixture, suspension or semi-solid.

Subclass: 318 [Patents]

This subclass is indented under subclass 640. Gearing combinations comprising one or more trains of gears for converting the continuous rotation of a driving gear to an alternating rotation of a driven element and in which additional elements may be provided for continuing the rotation of the driven element in one direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:
70 for rotary to alternating rotary mechanical movements.

Subclass: 319 [Patents]

This subclass is indented under subclass 640. Gearing combinations comprising one or more trains of gears for converting the continuous rotation of a driving element to an alternating rotation of a driven element.

SEE OR SEARCH THIS CLASS, SUBCLASS:
70 for rotary to alternating rotary mechanical movements.

Subclass: 320 [Patents]

This subclass is indented under subclass 319. Gearing, in
which the driven element is rotated a greater amount in one direction than in the other.

Subclass: 321 [Patents]

This subclass is indented under subclass 319. Gearing, embodying shiftable and/or slidable gears for effecting an alternating rotation of the driven member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
355 for interchangeably locked, single forward and reverse speed gearing.

Subclass: 322 [Patents]

This subclass is indented under subclass 319. Gearing, embodying engageable and disengageable clutches for effecting an alternating rotation of the driven members.

SEE OR SEARCH THIS CLASS, SUBCLASS:
125.5 for clutch operated mechanical movements of the rotary to intermittent unidirectional type.
361 and 376+, for forward and reverse interchangeably locked gearing involving clutches.

SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components, particularly 1 for a control for reversing the direction of rotation of an output shaft in a belt and pulley drive system.

Subclass: 323 [Patents]

This subclass is indented under subclass 322. Alternating rotary gearing, in which the clutches are all mounted on the alternating driven member.

Subclass: 324 [Patents]

This subclass is indented under subclass 322. Alternating rotary gearing, in which the clutches are all mounted on the continuously rotating driving member.

Subclass: 325 [Patents]

This subclass is indented under subclass 640. Transmissions in which a plurality of speeds are transmitted from one shaft to another by optionally engaging or meshing selected gears or clutches or gears and clutches, to their supporting shafts.
(1) Note. These transmissions include those which provide speed changes (1) by means of interchanging meshed gears on their shafts or (2) by replacing such gears with gears of different sizes.
(2) Note. Such gearing is found in various arts, for examples of which see the Search Notes below.

SEE OR SEARCH CLASS:
29, Metal Working, 27, for lathes of the combined machine type and (see Note 2).
82, Turning, subclass 29, for change speed gear for headstocks. (see Note 2).
408, Cutting by Use of Rotating Axially Moving Tool, 124, for drilling machines having miscellaneous drives. (See Note 2).
409, Gear Cutting, Milling, or Planing, 64, for milling machines. (See (2) Note).

Subclass: 329 [Patents]

This subclass is indented under subclass 325. Transmissions involving change of speed in which the counter shaft is disconnected from the drive shaft when the drive is not through the counter shaft.

Subclass: 330 [Patents]

This subclass is indented under subclass 325. Transmissions either (1) wherein the drive from the prime mover to the transmission is through a manually selected one of a plurality of concentric drive shafts, each of which has a clutch for engagement with the engine clutch; or (2) wherein the drive from the transmission to the propeller shaft is by means of a manually selected one of a plurality of concentric driven shafts each of which has a clutch for engagement with a clutch on the propeller shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336 for automatic speed responsive interchangeably locked gearing.
363 for spur gear type, progressive multiple key, single clutch shaft interchangeably locked gearing.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 48.1 for plural clutch-assemblages, 52.1+ for a progressive engagement clutch, and 103+ for a speed-responsive clutch.

Subclass: 331 [Patents]

This subclass is indented under subclass 325. Transmission in which the change of speed from the drive shaft to the driven shaft may be through a selected one of a plurality of counter shafts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
333 for combined gear and clutch type interchangeably locked gearing.
343 for selective, longitudinally slidable direct clutch and drive type interchangeably locked gearing.
359 for selective, multiple clutch shaft, interchangeably locked gearing.
373 for selective, single clutch shaft, interchangeably locked gearing.

Subclass: 332 [Patents]

This subclass is indented under subclass 325. Transmissions wherein the transmission of power from the drive shaft to the
driven shaft is by means of internal-external gears in conjunction with shiftable gears, or shiftable clutches, with constantly meshed gears, or both, in a single unit.

Subclass: 333 [Patents]

This subclass is indented under subclass 325. Transmissions composed of shiftable gears, and shiftable clutches, or shiftable gears provided with clutch elements, all in one gearing combination, wherein selected gears or clutches are manually shifted into or out of mesh with cooperating gears or clutches.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 20, for combined clutches and gears, where the gearing controls the clutch.

Subclass: 334 [Patents]

This subclass is indented under subclass 333. Transmissions, wherein the selected gears or clutches are manually shifted into or out of mesh with cooperating gears or clutches by operation of a clutch pedal after a separate preselective change speed device has been set.

SEE OR SEARCH THIS CLASS, SUBCLASS:
474 for pedal-operated devices.

Subclass: 335 [Patents]

This subclass is indented under subclass 325. Transmissions composed of shiftable gears, or shiftable clutches with constantly meshed gears, or shiftable gears and shiftable clutches, wherein the shifting is accomplished by mechanical power driven means.

Subclass: 336 [Patents]

This subclass is indented under subclass 335. Transmissions, wherein the shifting is accomplished either by means responsive to the speed of some part of the transmission or by means responsive to both speed and torque conditions of the transmission.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 103, for speed responsive clutches.
475, Planetary Gear Transmission Systems or Components, 254 for condition responsive control of planetary gearing.

Subclass: 336.5 [Patents]

This subclass is indented under subclass 336. Transmissions, wherein the shifting is accomplished by a governor responsive to the speed of some part of the transmission.

SEE OR SEARCH THIS CLASS, SUBCLASS:
404.5 for governor controlled reverse gearing.

SEE OR SEARCH CLASS:
73, Measuring and Testing, 488 for a speed responsive device, per se.

Subclass: 337 [Patents]

This subclass is indented under subclass 335. Transmissions, wherein the shifting is automatically accomplished by means operated in response to either the torque of the engine or of the driven shaft.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 54.1, for torque responsive clutches.

Subclass: 337.5 [Patents]

This subclass is indented under subclass 335. Transmissions, wherein the shifting is accomplished by means of a manually
operable cam which is connected to the shiftable member so that operation of the cam produces progressive changes in gear ratios.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 93, for cam operators for clutches.

Subclass: 339 [Patents]

This subclass is indented under subclass 325. Transmissions, wherein a means is provided for synchronizing the speed of the member which is being shifted with the speed of the member to be engaged by the shiftable member prior to engagement thereof.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 53.1.

Subclass: 340 [Patents]

This subclass is indented under subclass 339. Transmissions, having a clutch at each end thereof, which are simultaneously engaged or disengaged to simultaneously engage the transmission as a unit with or disengage it from the engine and the propeller shaft.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 48.1 for plural clutch-assemblages and synchromesh mechanism associated therewith.

Subclass: -2 [Patents]

Interchangeably locked, Longitudinally slidable:
This subclass is indented under subclass 325. Transmissions wherein one or more gears may be moved along the axis of rotation into mesh with cooperating gears.

Subclass: 341 [Patents]

Transmissions under Longitudinally slidable composed of multiple spur gears on a tumbler carrier for cooperating with different sized driving and driven gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:
348 for longitudinally slidable bevel gears in cone form mounted on a tumbler carrier.

SEE OR SEARCH CLASS:
82, Turning, subclass 140, 143 and 905, for change speed gearing used in lathes.
408, Cutting by Use of Rotating Axially Moving Tool, 124, for drilling machines including drive structure.
409, Gear Cutting, Milling, or Planing, 64 for a milling machine including drive structure.

Subclass: 342 [Patents]

Transmissions under Longitudinally slidable composed of selective, multiple, sliding spur gears on a plurality of shafts.

Subclass: 343 [Patents]

This subclass is indented under subclass 342. Transmissions, but having means to directly clutch the drive and driven shafts together.

Subclass: 344 [Patents]

Transmissions under Longitudinally slidable composed of multiple sliding spur gears on a plurality of shafts, which gears may be shifted manually to provide a progressive plurality of speeds.

SEE OR SEARCH THIS CLASS, SUBCLASS:
337.5 for cam operated controls for interchangeably locked gearing.

Subclass: 345 [Patents]

This subclass is indented under subclass 344. Transmissions, but which have means to directly clutch together the drive and driven shafts.

Subclass: 346 [Patents]

Transmissions under Longitudinally slidable containing a plurality of slidable spur gears which are adapted to be shifted into and out of engagement by fluid pressure means under manual control.

SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for preselected combined clutch and gear, interchangeably locked gearing.
336 for automatic speed responsive interchangeably locked gearing.

Subclass: 347 [Patents]

Transmissions under Longitudinally slidable composed of a plurality of slidable bevel gears which may mesh with a disk or with other bevel gears.

Subclass: 348 [Patents]

Transmissions under Longitudinally slidable comprising a plurality of spur gears of varying diameters arranged on a single shaft in cone form, and a single slidable spur tumbler gear adapted to be progressively slid into mesh with the gears of the cone whereby either the tumbler, or any one of the cone gears, may be driven by the other in mesh therewith.
(1) Note. The teeth on the cone gears may be radially or spirally disposed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
341 for tumbler type spur gears longitudable slidable.

Subclass: 349 [Patents]

This subclass is indented under subclass 348. Transmissions in which a plurality of cone type gears are used and the
single slidable tumbler gear is interposed between the cone type gears and acts to transmit power from one to the other.

Subclass: 350 [Patents]

Transmissions under Longitudinally slidable in which there is a single slidable bevel gear in mesh with a toothed disk, or one of a plurality of bevel gears for changing the speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
347 for multiple bevel gears which are longitudinally slidable.

Subclass: 351 [Patents]

Transmissions under Longitudinally slidable in which pin or crown gears, either single or multiple, are shifted to provide a change of speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
415 for the construction of the pin gear, per se.

Subclass: 352 [Patents]

This subclass is indented under subclass 325. Transmissions wherein the gears are supported by a shiftable carrier whereby the gears may be moved laterally with respect to the longitudinal axis of the transmission into mesh with cooperating gears.

Subclass: 353 [Patents]

This subclass is indented under subclass 352. Transmissions wherein the gears are supported by a rotary carrier and are adapted to be moved laterally into mesh with cooperating gears.

Subclass: 354 [Patents]

This subclass is indented under subclass 352. Transmissions wherein the gears are supported by a swingable carrier and are adapted to be moved laterally into mesh with cooperating gears.

Subclass: 355 [Patents]

This subclass is indented under subclass 325. Transmissions wherein a single forward or a single reverse speed is obtained by means of slidable toothed gears of any type.

Subclass: 356 [Patents]

This subclass is indented under subclass 325. Transmissions composed of a single shiftable driving shaft which can be progressively or selectively clutched to any one of a plurality of intermediate shafts or counter shafts, which in turn are connected by constant mesh gearing to a final driven shaft, the drive shaft and the intermediate shafts or counter shafts being provided with cooperating clutch faces.

Subclass: 357 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are a plurality of slidable keys or clutches splined to a plurality of shafts which are connected to each other by constant mesh gears revoluble on the shafts, and provided with clutch elements adapted to be engaged by the slidable clutches or keys, the keys or clutches being manually shifted in a manner to provide a progressive change in gear ratio.

SEE OR SEARCH THIS CLASS, SUBCLASS:
337.5 for cam operated controls for interchangeable locked gearing.
363 for progressive transmissions utilizing a single clutch shaft.

Subclass: 358 [Patents]

This subclass is indented under subclass 357. Transmissions, wherein the slidable keys or clutches are manually operated simultaneously to provide progressive changes in gear ratios.

Subclass: 359 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are a plurality of slidable keys or clutches splined to a plurality of shafts which are connected to each other by constant mesh gears revoluble on the shafts, and provided with clutch elements adapted to be engaged by the slidable clutches or keys, the slidable keys or clutches being manually shifted to provide selected changes in gear ratios.

SEE OR SEARCH THIS CLASS, SUBCLASS:
373 for selective, single clutch shaft, interchangeably locked gearing.

Subclass: 360 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are a plurality of manually operable slidable keys or clutches splined to a plurality of shafts which are connected to each other by constant mesh gears revoluble on the shafts, the gears being provided with clutch elements adapted to be engaged by the slidable clutches or keys to provide a plurality of selective forward speeds and a plurality of reverse speeds.

Subclass: 361 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are a plurality of manually operable slidable keys or clutches splined to a plurality of shafts which are connected to each other by constant mesh gears, revoluble on the shafts, the gears being provided with clutch elements adapted to be engaged by the slidable clutches or keys to provide a single forward speed and a single reverse speed.

Subclass: 362 [Patents]

This subclass is indented under subclass 325. Transmissions where there are a plurality of manually operable slidable keys or clutches splined to a single clutch shaft, the clutch shaft being connected to the other shafts of the transmission by constant mesh gears revoluble on the shafts, which shafts have clutch elements adapted to be engaged by the slidable keys or clutches to provide progressive change in gear ratios.

Subclass: 363 [Patents]

This subclass is indented under subclass 362. Transmissions, in which the rotatable constantly meshed gears are of the spur type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336 for automatically controlled interchangeably locked gearing.
337 for torque responsive interchangeably locked gearing.

Subclass: 364 [Patents]

This subclass is indented under subclass 363. Transmissions, in which the clutches or keys are shifted by manually controlled fluid operated means, or the clutches are of the fluid type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for preselector type combined clutch and gear, interchangeably locked gearing.
346 for fluid operated longitudinally slidable interchangeably locked gearing.
730 and see (1) Note thereto for the distinction between a fluid clutch and a fluid drive.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 85, for fluid pressure operators for clutches.

Subclass: 365 [Patents]

This subclass is indented under subclass 363. Transmissions, where the clutches or keys are shifted by manually controlled electrically operated means.

SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for preselector type combined clutch and gear, interchangeably locked gearing.
336.5 for governor controlled interchangeably locked gearing.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 40 and 84.1+, for electrically controlled clutches.

Subclass: 366 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are constant mesh gears, some of which are rotatably mounted on a shaft and adapted to be clutched to the shaft by a single clutch or key which is manually shifted to provide progressive changes in gear ratio.

SEE OR SEARCH THIS CLASS, SUBCLASS:
337.5 for cam operated controls for interchangeably locked gears.

Subclass: 368 [Patents]

This subclass is indented under subclass 366. Transmissions comprising a gear train connecting driving and driven shafts and a manually operable positive clutch for directly connecting the shafts, together with a one-way clutch in the gear train which acts like a ratchet mechanism which permits the gear train to overrun when the shafts are directly coupled together.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336 for automatically controlled interchangeably locked
gears.
337 for torque responsive interchangeably locked gears.

Subclass: 369 [Patents]

This subclass is indented under subclass 366. Transmissions, wherein the gears of the transmission are spur gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:
363 for progressive transmissions utilizing a single clutch shaft.

Subclass: 370 [Patents]

This subclass is indented under subclass 369. Transmissions, providing two speeds only, wherein constant mesh spur gears connect the drive and driven shafts, the gears being loosely mounted on the shafts and being adapted to be connected to their respective shafts by a single manually operable slidable key or clutch intermediate the loosely mounted gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:
368 for clutch and ratchet, and single key, single clutch shaft, progressive interchangeably locked gearing.
377 for spur type, single forward and reverse, single clutch shaft, interchangeably locked gearing.

Subclass: 371 [Patents]

This subclass is indented under subclass 369. Transmissions comprising a plurality of spur gears loosely mounted on a hollow shaft, the gears meshing with cooperating spur gears fixed to a second shaft, and also comprising a member slidably mounted in the hollow shaft, which member carries a single clutch element, the latter of which is manually shiftable to progressively and successively clutch the loose gears to the shaft on which they are mounted.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336 for automatically controlled interchangeably locked gearing.
336.5 for governor controlled interchangeably locked gears.
372 for spur gear, sliding clutch operator, single key, single clutch shaft progressive interchangeably locked gearing.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 52.1, for progressive engaging clutches and subclasses 65 and 66.1+ for axially engaging clutches.

Subclass: 372 [Patents]

This subclass is indented under subclass 369. Transmissions comprising a plurality of spur gears loosely mounted on a hollow shaft, the gears meshing with cooperating spur gears fixed to a second shaft, and also comprising a member slidably mounted in the hollow shaft, the gears carrying clutches and the slidable member carrying means for operating the clutches to progressively connect any one of the gears to its shaft.

Subclass: 373 [Patents]

This subclass is indented under subclass 325. Transmissions wherein there are a plurality of manually operable slidable keys or clutches splined to a single shaft which are connected to each other by constant mesh gears, revoluble on the shafts, the gears being provided with a single key to selectively connect certain of the gears to their respective shafts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for selective, multiple clutch shaft, slidable key or clutch type interchangeably locked gearing.
366 for single key, single clutch shaft, slidable key or clutch type interchangeably locked gearing.

Subclass: 374 [Patents]

This subclass is indented under subclass 373. Transmissions, but provided with constantly meshed gears, some of which are loosely mounted on the same shaft and wherein manually operable keys are provided for connecting a selected one of the gears to its shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
362 for progressive, multiple key, single clutch shaft, slidable key or clutch type interchangeably locked gearing.

Subclass: 375 [Patents]

This subclass is indented under subclass 374. Transmissions wherein the gears of the transmission are spur gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for selective, multiple clutch shaft, slidable key or clutch type interchangeably locked gearing.
363 for progressive transmissions utilizing a single clutch shaft.
369 for spur gear type, single key, single clutch shaft progressive, slidable clutch or key, interchangeably locked gearing.

Subclass: 376 [Patents]

This subclass is indented under subclass 325. Miscellaneous transmissions comprising combinations of spur gears with either pulleys and belts or chains and sprockets and provided with manually operable slidable clutches mounted on a single shaft for clutching either the pulleys, the sprockets, or the gears thereto in order to provide either a single forward or a single reverse speed.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 21, for reversing, gear controlled clutches.
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses for a belt and pulley drive system.

Subclass: 377 [Patents]

This subclass is indented under subclass 376. Transmissions having spur gears in constant mesh, certain of which are rotatable on a shaft and are adapted to be connected to the shaft by manually operated shiftable clutches.

Subclass: 378 [Patents]

This subclass is indented under subclass 376. Transmissions wherein a bevel driving gear is in constant mesh with a plurality of driven bevel gears, loosely mounted on the driven shaft with a manually operated slidable clutch for connecting either of the loosely mounted gears to its shaft and wherein the drive shaft is at an angle to the driven shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for washer and wringer mechanisms.
385 for pivotally supported bevel gearing.

Subclass: 379 [Patents]

This subclass is indented under subclass 376. Transmissions wherein a bevel driving gear is in constant mesh with a plurality of driven bevel gears, loosely mounted on the driven shaft with a manually operated slidable clutch for connecting either of the loosely mounted gears to its shaft and wherein the drive and driven shafts are in alignment, and the common bevel gear, which is in mesh with both loose gears, acts as an idler to reverse the drive.

Subclass: 380 [Patents]

This subclass is indented under subclass 640. Gearing mounted on a pivotal support to permit the driving and driven gears of a gear train to be pivotally moved relative to each other in a single plane without permitting a change of speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for washer and wringer mechanisms.
353 and 354, for pivoted carriage type interchangeably locked gearing.

SEE OR SEARCH CLASS:
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, appropriate subclasses for a coupling between a shaft and a driven member which facilitates relative movement of the shaft with respect to the member.
474, Endless Belt Power Transmission Systems or Components, particularly 58 for a belt and pulley drive system wherein an output pulley is selectively shiftable to different power output locations relative to an input pulley.

Subclass: 381 [Patents]

This subclass is indented under subclass 380. Gearing of the windmill type.

Subclass: 383 [Patents]

This subclass is indented under subclass 380. Screw gearing,.

Subclass: 384 [Patents]

This subclass is indented under subclass 380. Spur gearing.

Subclass: 385 [Patents]

This subclass is indented under subclass 380. Bevel gearing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for washer and wringer mechanisms.
378 and 379, for other bevel gearing of the interchangeably locked type.

Subclass: 386 [Patents]

This subclass is indented under subclass 385. Bevel gearing associated with the wheels of a vehicle.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 260 for a motor vehicle having at least one wheel which is both driven and steerable and wherein the steerable wheel is of the stub-axle type and further wherein is included a flexible, axially rotatable means having one portion fixed to the vehicle and another portion pivotable with the steerable wheel for transmitting drive to the wheel, and additionally wherein the pivotable portion of the means includes a gear element of an intermeshing gear type universal joint, which joint may include gears of the bevel type.

Subclass: 387 [Patents]

This subclass is indented under subclass 385. Bevel gearing associated with the wringer of a washing machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for washer and wringer mechanisms.

SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, subclass 269, for gearing for wringers.

Subclass: 388 [Patents]

This subclass is indented under subclass 640. Gearing provided with means whereby in response to actuation of one of its elements the movement of such element is continued or augmented by some other means.

SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses for the combination of an expansible chamber motor operating gearing which is included as part of the power output means of the motor, particularly 358 for feedback control mechanisms, many of which include gearing interconnecting the motor control and power output means. For a statement of the line between Classes 74 and 91, see References to Other Classes of the Class 91 definition.
180, Motor Vehicles, 6.2, for gearing organizations enabling steering by driving.

Subclass: 390 [Patents]

This subclass is indented under subclass 640. Gearing usually for driving a motor vehicle wheel, which is mounted adjacent a wheel and in which the driving shaft is offset with respect to the driven shaft or axle.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 337, for transmission mechanism combined with vehicle structure.

Subclass: 391 [Patents]

This subclass is indented under subclass 640. Gearing usually for driving a motor vehicle wheel, which is mounted adjacent a wheel and in which the driving shaft is centrally disposed with respect to the vehicle axle.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 70, for transmission mechanism combined with vehicle structure.

Subclass: 392 [Patents]

This subclass is indented under subclass 640. Gearing in which the gears are carried by parallel shafts which are movable from or toward each other to such a limited extent that the gears always remain in engagement.

SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, appropriate subclasses for methods of, and apparatus for, feeding material without utilizing the leading or trailing ends to effect movement of the material.
271, Sheet Feeding or Delivering, for front gage rotary conveyors.

Subclass: 393 [Patents]

This subclass is indented under subclass 640. Gearing in which the speed of the driven element is varied during each revolution.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 14 for cyclical or intermittent drive in planetary gearing.

Subclass: 395 [Patents]

This subclass is indented under subclass 640. Gearing in which one of the elements is adjustable relatively to bring it into adjusted relationship with another.

SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 507, for a differential speed responsive device.
248, Supports, 646, for adjustable supports, for motors, engines, etc., even though disclosed as adjustable for the purpose of engaging two gears.
318, Electricity: Motive Power Systems, 41, for electrical synchronizing systems.
352, Optics: Motion Pictures, 12 for synchronization of sound and picture in motion picture apparatus; subclass 33 for adjustable mechanical drive between a phonograph and a motion picture device to permit relative position adjustment between the two devices; and subclasses 160+ for adjustable drive connection between the shutter and feed of a motion picture device.
355, Photocopying, subclass 103 and 108+, for continuous contact film printing.
399, Electrophotography, 75 for machine operations of an
electrophotography device and subclasses 107+ for particular structure of the device, specifically subclasses 110+ for modular or displaceable components.

Subclass: 396 [Patents]

This subclass is indented under subclass 395. Gearing, in which either gear or shaft is adapted to be moved for the purpose of adjustment.

SEE OR SEARCH CLASS:
248, Supports, 646, for adjustable machine supports, per se.
474, Endless Belt Power Transmission Systems or Components, particularly 101 for structure wherein a shaft carrying a pulley or guide roll is shiftable such as for increasing belt tension.
476, Friction Gear Transmission Systems or Components, subclass 64 for a friction gear on the shaft of a movably mounted motor.

Subclass: 397 [Patents]

This subclass is indented under subclass 396. Gearing, in which the gear shafts are parallel.

SEE OR SEARCH CLASS:
384, Bearings, 252 for a plain bearing with an adjustable support.

Subclass: 398 [Patents]

This subclass is indented under subclass 396. Gearing in which the gears or gear shafts are adjustable by automatic means.

Subclass: 399 [Patents]

This subclass is indented under subclass 398. Gearing, the gears or gear shafts being parallel to each other.

Subclass: 400 [Patents]

This subclass is indented under subclass 395. Gearing, in which one of the elements is adapted to be moved manually in the direction along its axis for the purpose of adjustment.

Subclass: 401 [Patents]

This subclass is indented under subclass 400. Gearing, the gear shafts being parallel to each other.

Subclass: 402 [Patents]

This subclass is indented under subclass 400. Gearing, gear shafts being adjusted by automatic means.

Subclass: 403 [Patents]

This subclass is indented under subclass 402. Gearing, the gear shafts being parallel to each other.

Subclass: 404 [Patents]

This subclass is indented under subclass 640. Miscellaneous gearing in which the direction of rotation of the driven shaft is reversible and in which there is no change of speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
360 and 361, for forward and reverse, multiple clutch shaft slidable key or clutch type interchangeably locked gearing.
376 for forward and reverse, single clutch shaft, slidable
key or clutch type interchangeably locked gearing.

SEE OR SEARCH CLASS:
409, Gear Cutting, Milling, or Planing, subclass 336 for a planer reversing mechanism.

Subclass: 404.5 [Patents]

This subclass is indented under subclass 404. Gearing, in which there is no change of speed, in which the direction of rotation of the driven shaft is reversible, and in which the change of direction is controlled by a governor.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336.5 for governor-controlled change-speed gearing.

Subclass: 405 [Patents]

This subclass is indented under subclass 640. Miscellaneous gearing provided with means for disconnecting the gear train.

SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for mechanisms for connecting and disconnecting gears for use in connection with change-speed interchangeably locked transmission gearing.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, appropriate subclasses for clutches, per se.

Subclass: 406 [Patents]

This subclass is indented under subclass 640. Gearing in which one of the elements moves linearly or angularly about a center other than the axis of rotation of the gear.

SEE OR SEARCH THIS CLASS, SUBCLASS:
27 for reciprocating carriage motions.
31 through 35, for displaceable elements in rack and pinion gearing.
424.6 for spiral gear driven rack or shaft type gearing.

SEE OR SEARCH CLASS:
366, Agitating, 252 and 283+ for agitators with a gear driven rotatable stirrer.

Subclass: 409 [Patents]

This subclass is indented under subclass 640. Gear trains provided with means to eliminate backlash in some element of the combination.

SEE OR SEARCH THIS CLASS, SUBCLASS:
440 for backlash takeup for sectional rotary bodies used in gearing.

SEE OR SEARCH CLASS:
409, Gear Cutting, Milling, or Planing, subclass 146 for a device for removing backlash or wear from a screw feeding mechanism in a gear cutting machine.

Subclass: 410 [Patents]

This subclass is indented under subclass 640. Gear trains provided with means by which the pressure of the teeth of one unit is compensated for by that of another unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:
427 for pressure distributing means for worm gearing.

Subclass: 411 [Patents]

This subclass is indented under subclass 640. Gearing having one element provided with a yielding means through which torque is transmitted.

SEE OR SEARCH CLASS:
464, Rotary Shafts Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a rotary shaft coupled to driven member via a flexible element.

Subclass: 411.5 [Patents]

This subclass is indented under subclass 640. Gearing in which means are provided to selectively stop or prevent rotation of a gearing element.

SEE OR SEARCH CLASS:
188, Brakes, appropriate subclasses for brake means, per se.
192, Clutches and Power-Stop Control, 215 for combinations of joint operation and control of transmission and braking mechanisms.

Subclass: 412 [Patents]

This subclass is indented under subclass 640. Gearing consisting of two meshed gears mounted on shafts.
(1) Note. The mountings and housings for the gears may be included in the claims.

Subclass: 413 [Patents]

This subclass is indented under subclass 412. Gearing, wherein the gear axes or shafts are parallel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
332 for internal-external interchangeably locked gearing.
390 for eccentric driving shaft and axle gearing.

Subclass: 414 [Patents]

This subclass is indented under subclass 413. Gearing, in which all of the gears have external teeth.

Subclass: 415 [Patents]

This subclass is indented under subclass 414. Gearing, in which one of the gears has pin teeth.

SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for rotary to intermittent unidirectional mechanical movements.
351 for interchangeably locked gearing having longitudinally slidable pin gears.
436 for Geneva gears.

Subclass: 416 [Patents]

This subclass is indented under subclass 412. Gearing not otherwise classified, consisting of two gears in combination with a particular form of mounting, the axes thereof intersecting each other.

Subclass: 417 [Patents]

This subclass is indented under subclass 416. Gearing, the gears being of the bevel type.

Subclass: 420 [Patents]

This subclass is indented under subclass 412. Gearing consisting of a combination of spur and of bevel gears.

SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for power table and stands.

Subclass: 421 [Patents]

This subclass is indented under subclass 412. Gearing, consisting of gears of the spur type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
384 for pivotally supported, spur type, interchangeably locked gearing.
391 for central driving shaft in axle type gearing.
410 for pressure distributing gearing.

Subclass: 422 [Patents]

This subclass is indented under subclass 412. Gearing, the gearing embodying racks and pinions.

SEE OR SEARCH THIS CLASS, SUBCLASS:
27 for reciprocating carriage motions.
31 through 35, for displaceable elements in rack and pinion gearing.
406 for displaceable gearing.
424.5 for spiral gearing.
842 for rack and pinion mechanisms changing the position of a driven means "on the fly".

SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling Force, 95, 205, and 230, for rack and pinion drives for the pushing or pulling implements or apparatus.
409, Gear Cutting, Milling, or Planing, subclass 332 for a rack drive for a planer.

Subclass: 423 [Patents]

This subclass is indented under subclass 412. Gearing of the bevel type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
347 for interchangeably locked, longitudinally slidable, multiple, bevel type gearing.
378 and 379, for interchangeably locked, slidable clutch, single clutch shaft, single speed forward and reverse, bevel type gearing.
385 for pivotally supported bevel type gearing.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, for bevel gears of planetary type.

Subclass: 424 [Patents]

This subclass is indented under subclass 423. Gearing, in which the bevel gearing drives the differential and rear axle shafts of a motor vehicle.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 220 for planetary gear differentials.

Subclass: 424.5 [Patents]

This subclass is indented under subclass 412. Gearings of the spiral type.

Subclass: 424.6 [Patents]

This subclass is indented under subclass 424.5. Spiral gearing, in which the driven element is a rack or chain.

Subclass: 424.7 [Patents]

This subclass is indented under subclass 424.5. Gearing, the two gears being spiral and nonintersecting.

SEE OR SEARCH THIS CLASS, SUBCLASS:
425 for worm gearing.
458 for worm teeth.

Subclass: 424.8 [Patents]

This subclass is indented under subclass 424.5. Gearing of the screw and nut type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
89 for mechanical movements of the reciprocation or oscillating to or from alternately rotary type.
499 for screw and nut type, hand operated control lever and linkage systems.
841 for screw and nut mechanisms changing the position of a driven means "on the fly".

SEE OR SEARCH CLASS:
222, Dispensing, subclass 390, for screw actuated follower mechanism.
226, Advancing Material of Indeterminate Length, subclass 52 for means for advancingly engaging helixes in material.
254, Implements or Apparatus for Applying Pushing or Pulling Force, 98, 204, and 231+, for screw and nut drive operated implement or apparatus.

Subclass: 425 [Patents]

This subclass is indented under subclass 424.5. Gearing of the worm type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
383 424.7, 424.8, 458+, and 500, for other screw or worm gearing.
396 for gearing having relatively movable axes.
411 for yieldability in gear trains.
497 for cam type motion translating steering posts.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 56.1, for torque responsive clutches which release on overload.
254, Implements or Apparatus for Applying Pushing or Pulling Force, subclass 220, 229, 296, and 343 for worm and worm wheel gearing operated implements or apparatus.

Subclass: 425.5 [Patents]

This subclass is indented under subclass 425. Gearing, the worm gearing being of a structure to impart a variable speed to the driven member.

Subclass: 426 [Patents]

This subclass is indented under subclass 425. Gearing, the worm gearing being of a structure to impart an intermittent motion to the driven element.

SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for rotary to intermittent unidirectional mechanical movements.
436 for Geneva gears.

Subclass: 427 [Patents]

This subclass is indented under subclass 425. Gearing, the pressure of the teeth of one of the elements being compensated for by that of another.

SEE OR SEARCH THIS CLASS, SUBCLASS:
410 for pressure distributing gearing in general.

Subclass: 431 [Patents]

This subclass is indented under subclass 640. Gearing
comprising a combination of a gear with a rotary body or bodies, not a gear, fixed thereto and mounted upon a common shaft.

Subclass: 432 [Patents]

This subclass is indented under subclass 431. Gearing, the rotary elements being laterally spaced.

Subclass: 433 [Patents]

This subclass is indented under subclass 431. Gearing, the rotary elements being spaced radially.

Subclass: 434 [Patents]

This subclass is indented under subclass 640. Gearing comprising structure and details of rotary bodies, per se, constituting gearing elements.

SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, subclass 550 for composite stock material containing metal particles which has porous component, subclass 579 for a metallic intermediate article in the form of a disk.
474, Endless Belt Power Transmission Systems or Components, particularly 152 for a positive drive pulley; and subclasses 166+ for a friction drive pulley.

Subclass: 435 [Patents]

This subclass is indented under subclass 434. Inventions, having teeth which extend only partially around the periphery, producing upon rotation an intermittent drive.

Subclass: 436 [Patents]

This subclass is indented under subclass 434. Gearing, of the star-wheel type adapted to give intermittent rotation to a driven element during each revolution thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for rotary to intermittent unidirectional mechanical movements.
415 for pin toothed external type gearing.

SEE OR SEARCH CLASS:
352, Optics: Motion Pictures, subclass 189 for motion picture sprockets intermittently driven by a star gear.

Subclass: 437 [Patents]

This subclass is indented under subclass 434. Devices, having peripheries of noncircular form or irregularly shaped teeth, or both.

Subclass: 438 [Patents]

This subclass is indented under subclass 434. Devices, provided with teeth both on the inner and outer periphery.

Subclass: 439 [Patents]

This subclass is indented under subclass 434. Gears, which are made up of a plurality of sections.

Subclass: 440 [Patents]

This subclass is indented under subclass 439. Devices, provided with means for the elimination of backlash.

SEE OR SEARCH THIS CLASS, SUBCLASS:
409 for backlash takeup for gearing in general.

Subclass: 441 [Patents]

This subclass is indented under subclass 440. Devices, the gears being of the screw and nut type.

Subclass: 443 [Patents]

This subclass is indented under subclass 439. Gears including means for deadening sound in operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
445 for multiple disk rotary bodies.

SEE OR SEARCH CLASS:
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a flexible connection between a shaft and a member driven by the shaft.

Subclass: 444 [Patents]

This subclass is indented under subclass 439. Gears mounted upon a single shaft and connected thereto by means which permits of a differential action between them.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 220 for planetary gear differentials.

Subclass: 445 [Patents]

This subclass is indented under subclass 439. Devices, made up of laminations.

SEE OR SEARCH CLASS:
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses for laminating processes for making gears.

Subclass: 446 [Patents]

This subclass is indented under subclass 439. Bodies, having separate rims and webs.

SEE OR SEARCH THIS CLASS, SUBCLASS:
448 for bodies having segmental rims.

Subclass: 447 [Patents]

This subclass is indented under subclass 446. Bodies, having the rim secured to the web by means permitting the detachment of the rim.

Subclass: 448 [Patents]

This subclass is indented under subclass 439. Bodies, having rims made up of a plurality of segments.

SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for bodies having separable rims.

Subclass: 449 [Patents]

This subclass is indented under subclass 439. Bodies, fabricated wholly or in part of sheet metal.

SEE OR SEARCH CLASS:
301, Land Vehicles: Wheels and Axles, 5.1, for wheels.

Subclass: 450 [Patents]

This subclass is indented under subclass 439. Gears, in which the line of division between the sections occurs along a diameter.

Subclass: 451 [Patents]

This subclass is indented under subclass 439. Gears, provided with removable inserts whereby the shafts may be removed laterally through the opening occurred by the inserts.

Subclass: 457 [Patents]

This subclass is indented under subclass 640. Subcombinations comprising the gear teeth of meshing gears.

Subclass: 458 [Patents]

This subclass is indented under subclass 457. Devices directed to the structure and details of worm and helical gear teeth.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.7 425+ and 500, for other screw and worm gearing.
497 for cam type motion transmitting steering gear.

Subclass: 459 [Patents]

This subclass is indented under subclass 458. Devices in the shape, structure, and details of nuts for screw and nut gearing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for cooperating screw and nut gearing.
499 for screw and nut type motion transmitting steering gear.

Subclass: 459.5 [Patents]

This subclass is indented under subclass 457. Devices comprising bevel teeth.

Subclass: 460 [Patents]

This subclass is indented under subclass 457. Devices comprising spur teeth.

Subclass: 461 [Patents]

This subclass is indented under subclass 460. Devices wherein the spur teeth are combined with yieldable elements.

Subclass: 462 [Patents]

This subclass is indented under subclass 460. Devices wherein the spur teeth are of a modified tooth form.

Subclass: 464 [Patents]

This subclass is indented under subclass 462. Devices, in which the teeth embody antifriction means.

Subclass: 465 [Patents]

This subclass is indented under subclass 464. Devices, in which the teeth are provided with or operate against rollers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
497 for cam type, motion transmitting steering gear.
500 for worm type, motion transmitting steering gear.

Subclass: 466 [Patents]

This subclass is indented under subclass 462. Devices, in which the teeth are twisted.

Subclass: 467 [Patents]

This subclass is indented under subclass 640. Gears specifically modified for purposes of lubrication.

SEE OR SEARCH CLASS:
184, Lubrication, 6, for lubricating systems and particularly subclasses 11.1+ for splash systems.
475, Planetary Gear Transmission Systems or Components, 159 for lubrication associated with planetary gear transmission.

Subclass: 468 [Patents]

This subclass is indented under subclass 467. Gearing having teeth specifically modified for purposes of lubrication.

SEE OR SEARCH THIS CLASS, SUBCLASS:
2 3, and 4, for automatic operation of control.

Subclass: 469 [Patents]

This subclass is indented under the class definition. Mechanisms which are made up of (1) such links as cranks, levers and rods, with turning and sliding pairs, and (2) links consisting of bodies which have two or more rigid elements, which links may be connected to other bodies for the purpose of transmitting force or motion, not otherwise classified.
(1) Note. By pairs is meant two rigid bodies movably connected together so that the relative motion between them is of a definite character.
(2) Note. Such linkages are normally manually operated and used for controlling some device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
20 through 169, for mechanical movements.

SEE OR SEARCH CLASS:
901, Robots, subcollections 27+ for lever and linkage systems which make up a robot arm.

Subclass: 470 [Patents]

This subclass is indented under subclass 469. Systems which have a resilient member as one of the elements.

Subclass: 471 [Patents]

This subclass is indented under subclass 469. Systems in which there is a single control element which selectively operates a plurality of controlled elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
480 for interconnected multiple controlling systems.

SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine Control, for an element to control both a transmission and an engine.

Subclass: 473.1 [Patents]

Transmission control:
This subclass is indented under subclass 471. Multiple controlled elements for manually controlling an assembly of gears or associated parts for the transfer of power from a prime mover to a driving or propelling means.
(1) Note. When the control system is claimed in combination with the transmission, the patent is classified with the transmission. See the appropriate transmission class.

SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for mechanical movements for converting rotary motion to or from reciprocating or oscillating motion.
334 for preselector type combined clutch and gear, interchangeably locked gearing.
337.5 for a cam-operated transmission control.
365 for an electrical transmission control system.
470 for resilient joints in a lever system.

SEE OR SEARCH CLASS:
364, Data Processing: Vehicle, Navigation, and Relative Location, 51 for a computer controlled transmission.
477, Interrelated Power Delivery Controls, Including Engine Control, 34 for transmission control and 125+ for a means to prohibit the changing of the speed ratio of the gear transmission when such change may harm the engine or gear transmission.

Subclass: 473.11 [Patents]

Fluid actuator:
This subclass is indented under subclass 473.1. Transmission control wherein the operation or engagement of a multiple controlled transmission element is initialized by a fluid means.

SEE OR SEARCH THIS CLASS, SUBCLASS:
346 for longitudinally slidable gearing containing a plurality of slidable spur gears which are adapted to be shifted into and out of engagement by fluid pressure means under manual control.
364 for a clutch or key shifted by manually controlled fluid operated means, or a fluid-type clutch.
655 for a fluid drive mechanism included as part of an intermediate internal mechanism of a single gearing unit.
718 for a fluid drive in which alternate plural power paths to or from a gearing assembly is divided or combined.
730.1 for gearing combined with a fluid force torque
transmitting device to form a drive train.

SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine Control, 52 for the combination of a hydraulic or pneumatic torque transmitting means and a gear transmission, interrelated with control of the engine.

Subclass: 473.12 [Patents]

Electrical actuator:
This subclass is indented under subclass 473.1. Transmission control wherein the operation or engagement of a multiple controlled transmission element is initialized by an electrical pulse or current.

Subclass: 473.13 [Patents]

Occupant propelled vehicle:
This subclass is indented under subclass 473.1. Transmission control wherein the multiple controlled transmission elements are in a vehicle moved via the action of a rider or occupant of the vehicle.

SEE OR SEARCH CLASS:
280, Land Vehicles, 7.15, 12.1+, 200+, and 828+ for a vehicle having a means to be propelled by the occupant.
482, Exercise Devices, 66 for an occupant propelled support frame having movement facilitating feature for foot travel.

Subclass: 473.14 [Patents]

Transmission controlled by flexible cable:
This subclass is indented under subclass 473.13. Occupant propelled vehicle wherein the multiple controlled transmission elements are manipulated or moved by a pliable cable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
500.5 for an elongated element for transmitting force or motion from a hand to operate a device, wherein the element is formed of a flexible or pliant material or a series of pivoted links, such that the force or motion may be transmitted along a curved path.

Subclass: 473.15 [Patents]

Transmission controlled by flexible cable:
This subclass is indented under subclass 473.1. Transmission control wherein the multiple controlled transmission elements are actuated by a pliable cable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
500.5 for an elongated element for transmitting force or motion from a hand to operate a device, wherein the element is formed of a flexible or pliant material or a series of pivoted links, such that the force or motion may be transmitted along a curved path.

Subclass: 473.16 [Patents]

Foot operated:
This subclass is indented under subclass 473.1. Transmission control wherein the multiple controlled element is engaged or disengaged via movement of a lever engaged by the terminal part of a human leg.

SEE OR SEARCH THIS CLASS, SUBCLASS:
478 for foot operated controls which selectively operate a plurality of controlled members.
481 for an independently operable system which may be connected and operated by a single controlling member having a foot operated control and a hand operated control.
512 for foot operated links connected to other bodies for the purpose of transmitting force or motion.

SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine Control, 210 for a foot operated control of an interrelated engine and brake regulating means.

Subclass: 473.17 [Patents]

Multiple foot-operated controls:
This subclass is indented under subclass 473.16. Foot operated control having a plurality of independent foot operated levers.

Subclass: 473.18 [Patents]

Control convertible between automatic and manual operation:
This subclass is indented under subclass 473.1. Transmission control capable of selectively operating in a system controlled mode or an operator manipulated mode.

Subclass: 473.19 [Patents]

Control of plural mechanisms (e.g., control of transmission and control of 4 - wheel drive):
This subclass is indented under subclass 473.1. Transmission control capable of operating more than one transmission or related mechanism.

Subclass: 473.2 [Patents]

Separate control levers:
This subclass is indented under subclass 473.19. Control of plural mechanisms having individual controls for each controlled transmission or mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:
519 for control levers.

Subclass: 473.21 [Patents]

Restriction of shift, gear selection, or gear engagement:
This subclass is indented under subclass 473.1. Transmission control wherein movement of a shifting element is regulated, limited, or prohibited.

SEE OR SEARCH THIS CLASS, SUBCLASS:
325 in which a plurality of speeds are transmitted from one shaft to another by optionally engaging or meshing selected gears or clutches or gears and clutches, to their supporting shafts.

SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine Control, 51 wherein fluid resistance inhibits rotation of a
planetary transmission element and 125+ for the prevention of an unsafe or unintentional shift.

Subclass: 473.22 [Patents]

Prevention of reverse shift:
This subclass is indented under subclass 473.21. Restricted shift, gear selection or gear engagement wherein a reverse shift, selection, or engagement is averted, impeded, or prohibited.

SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine Control, 126 for the prevention of an unsafe or unintentional reverse shift.

Subclass: 473.23 [Patents]

Separate actuator to disengage restrictor:
This subclass is indented under subclass 473.21. Restricted shift, gear selection or gear engagement further comprising a releasable mechanism for manually enabling the shifting, selecting, or engaging element.

Subclass: 473.24 [Patents]

Shift element interlock:
This subclass is indented under subclass 473.21. Restricted shift, gear selection or gear engagement wherein the shifting elements are releasably interconnected.

Subclass: 473.25 [Patents]

With detent, recess, notch, or groove:
This subclass is indented under subclass 473.24. Shift rod interlock wherein the interlock comprises a stop or checking device to hold the shifting element in a predetermined position until moved therefrom by an application of a force transmitted to the element.

Subclass: 473.26 [Patents]

Resiliently biased interlock:
This subclass is indented under subclass 473.24. Shift rod interlock wherein the interlock is flexabily urged in a locking position.

Subclass: 473.27 [Patents]

Spherical restrictor:
This subclass is indented under subclass 473.21. Restricted shift, gear selection, or gear engagement wherein the restrictor is generally round in three dimensional space.

Subclass: 473.28 [Patents]

Resiliently biased restrictor:
This subclass is indented under subclass 473.21. Restricted shift, gear selection, or gear engagement wherein the restrictor is flexabily urged in a locking position.

Subclass: 473.29 [Patents]

Having vibration damper:
This subclass is indented under subclass 473.1. Transmission control having a means to shunt frequencies generated by the transmission.

Subclass: 473.3 [Patents]

Manually operated selector (e.g., remotely controlled device, lever, push button, rotary dial, etc.):
This subclass is indented under subclass 473.1. Transmission control wherein the transmission is manipulated by the vehicle or machine operator using a hand operated device.

Subclass: 473.31 [Patents]

Control lever on steering column:
This subclass is indented under subclass 473.3. Manually operated selector located on the steering column of a vehicle.

Subclass: 473.32 [Patents]

Control lever movable through plural planes:
This subclass is indented under subclass 473.31. Steering column mounted control level wherein the control lever movement is not confined to a single plane.

SEE OR SEARCH THIS CLASS, SUBCLASS:
471 a single control element which selectively operates a plurality of controlled elements.

Subclass: 473.33 [Patents]

Control lever movable through plural planes:
This subclass is indented under subclass 473.3. Hand operated selector wherein the control lever movement is not confined to a single plane.

SEE OR SEARCH THIS CLASS, SUBCLASS:
471 a single control element which selectively operates a plurality of controlled elements.

Subclass: 473.34 [Patents]

Spherical mount (e.g., ball and socket):
This subclass is indented under subclass 473.33. Control lever movable through plural planes wherein the control lever is mounted using a spherical portion and complementary cavity mount.

Subclass: 473.35 [Patents]

Resiliently biased control lever:
This subclass is indented under subclass 473.34. Spherical mounted control lever wherein the control lever is resiliently biased or urged in a particular orientation.

Subclass: 473.36 [Patents]

Particular element (e.g., shift fork, template, etc.):
This subclass is indented under subclass 473.1. Transmission control having specific structure of a transmission control element or related mechanism.

Subclass: 473.37 [Patents]

Shift fork structure:
This subclass is indented under subclass 473.36. Particular element wherein the transmission control element or related mechanism is a shift fork.

Subclass: 478 [Patents]

This subclass is indented under subclass 471. Systems in which there are foot operated controls which selectively operates a plurality of controlled members.

SEE OR SEARCH THIS CLASS, SUBCLASS:
473.16 for foot operated transmission controls.
480 for interconnected multiple control elements.
523 for hand control levers.

Subclass: 478.5 [Patents]

This subclass is indented under subclass 478. Devices wherein there are at least two foot operated controllers for separate systems, and one of the controllers has either an extension or a remote operator attached or connected thereto and so positioned with respect to at least one other of the controllers that a single foot may be manipulated to effect operation of at least two of the controllers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
480 for devices wherein there are a plurality of systems respectively having controllers, which controllers are provided with a mechanical interconnection.

Subclass: 479.01 [Patents]

Multiple controlling elements for single controlled element:
This subclass is indented under subclass 469. Systems in which there are a plurality of controlling elements providing input to control a single element output. [figure]

Subclass: 480 [Patents]

This subclass is indented under subclass 479. Systems in which there are a plurality of independently operable systems which may be connected and operated by a single controlling member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
473.16 for foot operated transmission controls.
494 for combined steering posts with auxiliary operators thereon.
562 for pedals having additional foot engaging portions.

Subclass: 481 [Patents]

This subclass is indented under subclass 480. Systems, when one control is a foot operated member and the other a hand operated member.

SEE OR SEARCH CLASS:
188, Brakes, subclass 106, for brakes which are operated by both hand and foot controls.

Subclass: 482 [Patents]

This subclass is indented under subclass 481. Systems, for controlling a carburetor.

SEE OR SEARCH THIS CLASS, SUBCLASS:
513 for foot operated accelerators, per se.

Subclass: 483 [Patents]

This subclass is indented under subclass 479. Systems located between and cooperating with elements of a plurality of control lever and linkage systems which prevent the simultaneous operation of the control systems, and permit the operation of only one control system at a time.

SEE OR SEARCH THIS CLASS, SUBCLASS:
473.24 for interlocked multiple controlled elements.

SEE OR SEARCH CLASS:
246, Railway Switches and Signals, 131, for interlocking switches and signals.

Subclass: 484 [Patents]

This subclass is indented under subclass 479. Systems where the controlling elements are grouped around a steering post.

Subclass: 485 [Patents]

This subclass is indented under subclass 484. Systems in which the control members are rotary shafts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
504 for manually operated rotatable rod, shaft or post type controls.

Subclass: 486 [Patents]

This subclass is indented under subclass 484. Systems in which the controlling elements have a part reciprocating in a line parallel to the steering post axis.

Subclass: 487 [Patents]

This subclass is indented under subclass 486. Systems in
which the reciprocating member is flexible.

Subclass: 488 [Patents]

This subclass is indented under subclass 486. Systems in which the rotary shafts are grouped about a handle bar and in which one of the shafts reciprocates.

Subclass: 489 [Patents]

This subclass is indented under subclass 488. Systems in which one element of the controls is a flexible member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
501 for Bowden wires.

SEE OR SEARCH CLASS:
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a flexible shaft; and subclasses 173+ for a flexible housing for a shaft or Bowden cable.

Subclass: 490 [Patents]

This subclass is indented under subclass 479. Systems in which a plurality of controlling elements are grouped about each other, and a device is interposed between the controlling elements to prevent rattling.

SEE OR SEARCH CLASS:
238, Railways: Surface Track, subclass 382, for noise deadening surface track.
248, Supports, subclass 556, 557, 560+, and 638 for vibration damping supports.
278, Land Vehicles: Animals Draft Appliances, 61, for anti-rattling thill couplings.
280, Land Vehicles, 89 for an occupant steered vehicle including means for inhibiting or prohibiting unintended variant steering operation known as "wheel shimmy or wobble";
subclass 108 for a draft coupling or tongue antivibrator in a land vehicle of general utility; subclass 137.507 for an antirattler of a fifth wheel; or subclass 780 for an occupant steered vehicle steering arrangement including a pliant or resilient means interposed between a steering post or column and the vehicle structure.

Subclass: 490.01 [Patents]

Robotic arm:
This subclass is indented under subclass 479.01. Systems in which the controlled element is a member of a robotic linkage system which may include a base and its associated supporting structure. [figure]
(1) Note. The definitions for various terms relating to "robots" in this subclass definition and in the definitions for those subclasses which are either coordinate or subordinate to this subclass are as set forth in the glossary of Class 901, Robots.
(2) Note. Robotic linkage systems having a claimed specific end effector and details thereof are not provided for in this class (74); see search notes below.

SEE OR SEARCH CLASS:
414, Material or Article Handling, appropriate subclasses for robot linkage systems having a positively claimed end effector which can manipulate or move an article or a quantity of material.
901, Robots, for cross reference art collections regarding various robotic features.

Subclass: 490.02 [Patents]

Including power cable or connector:
This subclass is indented under subclass 490.01. Subject matter in which the controlled member has associated therewith an electrical cable, a pneumatic tube, a hydraulic conduit, or a connector which will handle either single or plural energy paths. [figure]

SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, appropriate subclasses for various cable structures and for various insulators or isolators.
439, Electrical Connectors, appropriate subclasses, for
connectors between electrical conductors.

Subclass: 490.03 [Patents]

Including electric motor:
This subclass is indented under subclass 490.01. Subject matter in which one or more electric motors are used to move a robotic linkage system to a desired location within the range of motion of the linkage. [figure]
(1) Note. The electric motors in this subclass are used to move the links of a robotic linkage system only; they are not intended to be used in translating a base member.

SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, appropriate subclasses for various motor structure.
318, Electricity: Motive Power Systems, 415 for automatic motor controls.
901, Robots, subclass 23 and 24 for electric motor drive systems for arms with end effectors.

Subclass: 490.04 [Patents]

Including flaccid drive element:
This subclass is indented under subclass 490.01. Subject matter in which the robotic linkage system is moveable to a desired location by drive inputs from one or more nonrigid flexible elements. [figure]
(1) Note. Flaccid drive elements include, but are not limited to belts, chains, cables, or solid strands (e.g., bowden wire).

SEE OR SEARCH THIS CLASS, SUBCLASS:
89.2 for reciprocating or oscillating to or from alternating rotary including flexible drive connector (e.g., belt, chain, strand).

SEE OR SEARCH CLASS:
901, Robots, subclass 21 for a robot arm with a flaccid drive element.

Subclass: 490.05 [Patents]

Joint between elements:
This subclass is indented under subclass 490.01. Subject matter in which the controlled member is a drive path connection between two or more members of a robot linkage. [figure]

SEE OR SEARCH CLASS:
623, Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor, 57 for arm components and connections therebetween.
901, Robots, subclass 28 for joints in robot linkages.

Subclass: 490.06 [Patents]

Wrist:
This subclass is indented under subclass 490.05. Subject matter in which the joint, typically between the robot linkage and the end effector mount member, permits rotation about a plurality of orthogonal axes. [figure]
(1) Note. See Class 901 glossary for a definition of "wrist".

SEE OR SEARCH CLASS:
623, Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor, 61 for artificial wrists.
901, Robots, subclass 29 for robot wrists.

Subclass: 490.07 [Patents]

Power elements as controlling elements:
This subclass is indented under subclass 479.01. Subject matter in which the controlling elements include power devices which include, but are not limited to electric motors, fluid motors, spring motors, heat engines (e.g., thermostatic actuator), electromagnetic devices (e.g., solenoids), etc. [figure]

SEE OR SEARCH CLASS:
60, Power Plants, appropriate subclasses for related prime movers.
91, Motors: Expansible Chamber Type, appropriate subclasses
for fluid motor detail.
92, Expansible Chamber Devices, appropriate subclasses for fluid actuators.
185, Motors: Spring, Weight, or Animal Powered, appropriate subclasses for spring escapements or spring motors.
310, Electrical Generator or Motor Structure, appropriate subclasses for various motor structures and 311 for piezoelectric devices.
335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, appropriate subclasses for electromagnetic devices.

Subclass: 490.08 [Patents]

Planar surface with orthogonal movement and rotation:
This subclass is indented under subclass 490.07. Subject matter in which the power elements control both linear movement of a planar surface member (constrained to move along at least one of the three orthogonal spacial axes) and its rotary movement about at least one axis. [figure]
(1) Note. This subclass provides a locus for rotary tables which have power inputs to control both translation and rotation.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclass 1, for x-y motion.
108, Horizontally Supported Planar Surfaces, subclass 20, 137, and 143 for horizontally adjustable planar surfaces.
248, Supports, subclass 184, 657, and 661 for adjustable supports.
269, Work Holders, subclass 71 and 73 for work holders with adjustment means to shift the workpiece location on a machine tool.
359, Optics: Systems (Including Communication) and Elements, subclass 393 for microscope stage or slide carrier with plural transverse movement.
414, Material or Article Handling, subclass 749.1 for horizontal linear movement.

Subclass: 490.09 [Patents]

Planar surface with orthogonal movement only:
This subclass is indented under subclass 490.07. Subject matter in which the power elements control linear movement of a planar surface member that is constrained to move along at least one of the three orthogonal spacial axes. [figure]
(1) Note. This subclass provides a locus for x-y tables which have power inputs to control translation only.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclass 1 M, for x-y motion.
108, Horizontally Supported Planar Surfaces, subclass 20, 137, and 143 for horizontally adjustable planar surfaces.
248, Supports, subclass 184, 657, and 661 for adjustable supports.
269, Work Holders, subclass 71 and 73 for work holders with adjustment means to shift the workpiece location on a machine tool.
359, Optics: Systems (Including Communication) and Elements, subclass 393 for microscope stage or slide carrier with plural transverse movement.
414, Material or Article Handling, subclass 749 for horizontal linear movement.

Subclass: 490.1 [Patents]

Pair of power elements:
This subclass is indented under subclass 490.07. Subject matter in which there are only two power elements in the linkage system. [figure]

Subclass: 490.11 [Patents]

Power and manual controlling elements:
This subclass is indented under subclass 479.01. Subject matter in which there is a combination of at least one power driven element and at least one manually operated element which together control the system's single output element. [figure]
(1) Note. In this subclass, and in coordinate and subordinate subclasses, the terms "manual" and "hand operated" also include using leg or foot power.

SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for devices having alternate manual or power operators to control an output.

Subclass: 490.12 [Patents]

Manual controlling elements:
This subclass is indented under subclass 479.01. Subject matter in which there is a plurality of exclusively hand or exclusively foot operated devices which together provide inputs to control the system's single output element. [figure]
(1) Note. In this subclass, manual elements include, but are not limited to such devices as push buttons, levers, handwheels, foot pedals, etc.
(2) Note. In this subclass, and in coordinate and subordinate subclasses, the terms "manual" and "hand operated" also includes using leg or foot power.

Subclass: 490.13 [Patents]

Planar surface with orthogonal movement or rotation:
This subclass is indented under subclass 490.12. Subject matter in which hand operated elements control both linear movement of a planar surface member (constrained to move along at least one of the three orthogonal spacial axes) or its rotary movement about at least one axis. [figure]
(1) Note. This subclass provides a locus for rotary tables which have only manual inputs to control translation or rotation.

SEE OR SEARCH CLASS:
33, Geometrical Instruments, subclass 1 M, for x-y motion.
108, Horizontally Supported Planar Surfaces, subclass 20, 137, and 143 for horizontally adjustable planar surfaces.
248, Supports, subclass 184, 657, and 661 for adjustable supports.
269, Work Holders, subclass 71 and 73 for work holders with adjustment means to shift the workpiece location on a machine tool.
359, Optics: Systems (Including Communication) and Elements, subclass 393 for microscope stage or slide carrier with
plural transverse movement.
414, Material or Article Handling, subclass 749 for horizontal linear movement.

Subclass: 490.14 [Patents]

Levers:
This subclass is indented under subclass 490.12. Subject matter in which the manual controlling elements are a plurality of first, second, or third degree levers which are either operated by hand or by foot. [figure]
(1) Note. In this subclass, levers include, but are not limited to such devices as handwheels, foot pedals, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
481 for the combination of a hand operated lever and a foot operated pedal.

Subclass: 490.15 [Patents]

Pair of levers:
This subclass is indented under subclass 490.14. Subject matter in which there are only two control elements in the linkage system that are exclusively either hand or foot operated.
(1) Note. In this subclass, levers include, but are not limited to such devices as handwheels, foot pedals, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
481 for the combination of a hand operated lever and a foot operated pedal.

Subclass: 491 [Patents]

This subclass is indented under subclass 469. Systems which are hand operated.

Subclass: 492 [Patents]

This subclass is indented under subclass 491. Hand operated steering posts. [figure]

SEE OR SEARCH CLASS:
180, Motor Vehicles, subclass 78 and 400+ for steering posts combined with vehicle structure.

Subclass: 493 [Patents]

This subclass is indented under subclass 492. Hand operated steering posts which are angularly or axially adjustable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
485 for steering posts, per se.

Subclass: 494 [Patents]

This subclass is indented under subclass 492. Auxiliary devices to be used alternately with the conventional steering wheel or arm for operating steering posts.

Subclass: 495 [Patents]

This subclass is indented under subclass 492. Devices acting on a steering post or wheel to position it in a selected position.
(1) Note. In this subclass the steering post is positioned, as distinguished from being positively locked, which latter feature is covered by the locks in Class 70, Locks, subclasses 182+.

SEE OR SEARCH CLASS:
70, Locks, 182 for a lock for a rotary shaft (e.g., a steering post); subclasses 207+ for a lock for a handle, a handwheel (e.g., a steering wheel), or a knob; and subclass 252 for a lock for an automobile steering mechanism, and wherein the mechanism includes a switch.
192, Clutches and Power-Stop Control, subclass 219, for drive release locking clutches.
280, Land Vehicles, subclass 89.11 for a general utility land vehicle including occupant controlled steering of laterally opposed, stub axle supported, steerable road wheels provided with means for returning the steerable road wheels to a center or neutral angulation which may or may not be fluid operated; subclass 89.13 for a fluid positioning device employed in conjunction with the tie rod interconnecting laterally opposed steerable stub axles not returning the steerable road wheels to a center or neutral angulation; or subclass 90 for a general utility land vehicle including occupant controlled steering having fluid positioning devices not limited to laterally opposed, stub axle supported, steerable road wheels.

Subclass: 496 [Patents]

This subclass is indented under subclass 492. Devices for transferring power from steering posts to steering linkage.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 400, for power-operated steering mechanisms.

Subclass: 497 [Patents]

This subclass is indented under subclass 496. Mechanisms in which cams are used for transferring power from the steering posts to the steering linkage.

SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for mechanical movements of the rotary to or from reciprocating or oscillating type having an axial cam and slide.
74 for mechanical movements of the rotary to alternating rotary type having mutilated gearing connections.

Subclass: 498 [Patents]

This subclass is indented under subclass 496. Mechanisms in which gears are used for transferring power from steering posts to steering linkages.

SEE OR SEARCH THIS CLASS, SUBCLASS:
485 for combined steering and control assemblies.
640 for gearing, per se.

Subclass: 499 [Patents]

This subclass is indented under subclass 498. Mechanisms in which screw and nut gearing is used.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for screw and nut gearing, per se.

Subclass: 500 [Patents]

This subclass is indented under subclass 498. Mechanisms in which worm gearing is used.

SEE OR SEARCH THIS CLASS, SUBCLASS:
425 for worm gearing, per se.

Subclass: 500.5 [Patents]

Flexible transmitter (e.g., bowden cable):
This subclass is indented under subclass 491. Mechanism including an elongated element for transmitting force or motion from a hand to operate a device, wherein the element is formed of a flexible or pilant material or a series of pivoted links, such that the force or motion may be transmitted along a curved path.

SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 412 for a flexible linkage actuator for a float-type flush valve.
73, Measuring and Testing, subclass 318 and 321 for flexible transmission elements combined with liquid level gauges and uses to transmit motion from a float to a gauge.
100, Presses, subclass 267 and 278+ for presses which employ a flexible element actuator.
138, Pipes and Tubular Conduits, 118 for a flexible pipe.
160, Flexible or Portable Closure, Partition, or Panel, 344 for cable-operators for curtains or drapes.
172, Earth Working, subclass 414, 502 and 829 for earth working apparatus which employs a flexible cable actuator (e.g., for raising or lowering a bulldozer blade).
212, Traversing Hoists, subclasses 239-241 and 262-263 for cable actuated crane booms.
244, Aeronautics, subclass 232 for a pilot operated cable and linkage control system.
251, Valves and Valve Actuation, subclass 294 for a flexible cable valve actuator.
254, Implements or Apparatus for Applying a Pushing or Pulling Force, particularly 264 for cable actuators for load hauling or hoisting devices.
446, Amusement Devices: Toys, 31 for tethered toy aircraft having cable operated mechanisms.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a flexible torque transmitting element.

Subclass: 501.5 [Patents]

This subclass is indented under subclass 500.5. Devices comprising means for maintaining an established static stretch or pull in the flexible elements, effective upon change in said stretch or pull, for concurrently restoring the same to the established value.
(1) Note. Many of these devices correct the change in tension resulting from a change in elongation of either the flexible element and/or the system mounting, due to variations in temperature.

SEE OR SEARCH THIS CLASS, SUBCLASS:
586 for longitudinally adjustable piston rods.

SEE OR SEARCH CLASS:
246, Railway Switches and Signals, 152, for constant tension sustaining mechanism disclosed for use in interlocking, manually actuated, mechanically locking, railway switches and signals.
267, Spring Devices, appropriate subclasses, for spring devices, per se.
474, Endless Belt Power Transmission Systems or Components, particularly 101 for a belt tightener.

Subclass: 501.6 [Patents]

And hand operator:
This subclass is indented under subclass 500.5. Mechanism including a particular input portion which is directly contacted and manipulated by the hand.

SEE OR SEARCH CLASS:
446, Amusement Devices: Toys, 31 for a (cable) control handle for a tethered toy aircraft.

Subclass: 502 [Patents]

This subclass is indented under subclass 501.6. Device wherein the particular input portion which is directly contacted and manipulated by the hand comprises a reciprocating rod slidably engaged in fixed support structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:
487 for hand operators for reciprocating flexible elements combined with post structure.

Subclass: 502.1 [Patents]

For moving a mirror:
This subclass is indented under subclass 501.6. Mechanism wherein the elongated flexible element is connected to a device having a polished or smoothed surface that forms an image by reflection, and is intended to transmit motion from a hand to the device.

Subclass: 502.2 [Patents]

Single rotatable lever (e.g., for bicycle brake or deraileur):
This subclass is indented under subclass 501.6. Mechanism wherein the particular input portion comprises a pivoted link or bar having a first section adapted to be contacted and moved by the hand, and a second portion connected directly to the flexible element or an intermediate fastener.
(1) Note. Mechanism which employ serially connected levers at the input to the flexible element are excluded.

SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling Force, 243 for a hand lever for tensioning flexible material (e.g., cable).

Subclass: 502.3 [Patents]

Including rolling antifriction elements:
This subclass is indented under subclass 500.5. Mechanism including a plurality of discrete rotatable elements located between and contacting the flexible element and its surrounding or supporting structure, to eliminate frictional contact between the two.

SEE OR SEARCH CLASS:
160, Flexible or Portable Closure, Partition, or Panel, subclass 346 and 347 for cable antifriction means employed with drape or curtain operators.

Subclass: 502.4 [Patents]

And sheath support, connector, or anchor:
This subclass is indented under subclass 500.5. Mechanism including a flexible tubular housing covering a substantial length of the flexible element and which allows axial movement of the element therein, wherein one of the following is provided: (a) means to hold up or provide a foundation for the flexible housing or (b) means to fasten an end of the flexible housing either to another section of flexible housing or to a structure which is fixed with respect to the flexible element.

SEE OR SEARCH CLASS:
248, Supports, 65 for a sheath support bracket, per se.

Subclass: 502.5 [Patents]

Specific cable or sheath structure:
This subclass is indented under subclass 500.5. Mechanism wherein significance is attributed to the particular composition or form of either the elongated flexible element or a flexible tubular housing which covers a substantial length of the flexible element and allows axial movement of the element therein.

SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Article, subclass 36 for conduit or tube type stock material and subclass 377 for a sheath having a wound or wrapped core or coating.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, subclass 173 for flexible shaft housings.

Subclass: 502.6 [Patents]

Specific cable connector or guide:
This subclass is indented under subclass 500.5. Mechanism wherein particular significance is attributed to either (a) a device or structure for fastening an end of the flexible element to something, or (b) a rigid element which defines a path through which the flexible element moves and which limits lateral movement of the flexible element.

SEE OR SEARCH CLASS:
24, Buckles, Buttons and Clasps, etc., 115 for means to fasten a cable or cord to something other than a cable or cord.
254, Implements or Apparatus for Applying a Pushing or Pulling Force, subclass 389 for cable guides.
403, Joints and Connections, appropriate subclasses for a cable connector, per se.
439, Electrical Connectors, appropriate subclasses for devices adapted to electrically connect two wires.

Subclass: 503 [Patents]

This subclass is indented under subclass 491. Devices comprising hand operated, rigid, control members which operate by sliding movement in the direction of their
longitudinal axes.

SEE OR SEARCH THIS CLASS, SUBCLASS:
502 for slidable operators for flexible transmitters.

Subclass: 504 [Patents]

This subclass is indented under subclass 491. Devices, comprising miscellaneous hand operated controls which consist of a rigid rotatable member.

Subclass: 505 [Patents]

This subclass is indented under subclass 504. Systems in which the control member is a rotatable rod, shaft, or post which transmits motion through a gear to a drum and cable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
492 for steering posts.

SEE OR SEARCH CLASS:
188, Brakes, 82.1, for brakes applied to elements rotated relative to stationary elements to prevent retrograde rotation while allowing forward rotation.
254, Implements or Apparatus for Applying Pushing or Pulling Force, 266 for apparatus for hauling or hoisting a load which includes a driven drum for pulling on or traveling along a cable, and wherein either the drum or the cable is attached to the load.

Subclass: 506 [Patents]

This subclass is indented under subclass 504. Devices directly connected to a drum and cable.

Subclass: 507 [Patents]

This subclass is indented under subclass 504. Devices connected to gearing for operating it.

Subclass: 508 [Patents]

This subclass is indented under subclass 507. Devices which translate the forces applied thereto with varying ratios.
(1) Note. The device may be either automatic, or be changed manually.

Subclass: 509 [Patents]

This subclass is indented under subclass 507. Devices in the form of screw and nut gearing used for transmitting force and motion from the rotatable control member to the controlled linkage.

Subclass: 510 [Patents]

This subclass is indented under subclass 504. Devices consisting of rigid rotatable control members which are collapsible when not in use and adjustable either axially or transversely.

Subclass: 511 [Patents]

This subclass is indented under subclass 504. Devices for supporting and mounting hand operated rotatable rods, shafts, or posts, and their motion translating mechanisms.

Subclass: 512 [Patents]

This subclass is indented under subclass 469. Systems which are operated by foot controlled members.

SEE OR SEARCH THIS CLASS, SUBCLASS:
482 for interconnected hand and foot operators.
564 for foot rests.

Subclass: 513 [Patents]

This subclass is indented under subclass 512. Systems in which the foot operated member operates a linkage system which controls a carburetor.

Subclass: 514 [Patents]

This subclass is indented under subclass 512. Systems in which the foot operated member operates a linkage system which controls a signal.

Subclass: 515 [Patents]

This subclass is indented under subclass 469. Systems operated by a knee controlled member.

Subclass: 516 [Patents]

This subclass is indented under subclass 469. Systems having a mechanical unit which automatically varies the out-put force during the operation.

Subclass: 517 [Patents]

This subclass is indented under subclass 516. Systems wherein one element of the mechanical force varying unit is flexible.

Subclass: 518 [Patents]

This subclass is indented under subclass 516. Systems which have an additional device for varying the leverage of a control element so as to vary the input force.

Subclass: 519 [Patents]

This subclass is indented under subclass 469. Elements consisting of rigid structures which turn freely on a fixed pivot and impart pressure or motion from a source of power.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 90.39, for a lever element in a poppet valve operating mechanism.

Subclass: 520 [Patents]

This subclass is indented under subclass 519. Elements hinged together and employed to transmit a varying force by lateral pressure on the hinge.

SEE OR SEARCH CLASS:
108, Horizontally Supported Planar Surfaces, subclass 81 for drop leaf extension surfaces having a toggle type diagonal brace.

Subclass: 521 [Patents]

This subclass is indented under subclass 520. Devices consisting of a series of diagonal levers pivoted together in the middle and at the ends by which arrangement the device can be extended.
(1) Note. When claimed in combination with a control mechanism, see the appropriate control subclass above.

SEE OR SEARCH CLASS:
248, Supports, subclass 277.1, for lazy tong brackets.

Subclass: 522 [Patents]

This subclass is indented under subclass 519. Levers in which the relationship of parts may be varied as by varying the length of the lever or work arms or by varying the point of application of force or the position of the fulcrum.

Subclass: 522.5 [Patents]

This subclass is indented under subclass 519. Devices which have one end fulcrumed on a fixed base and pivotally supporting at or adjacent the opposite end a reciprocating motion transmitting member.

Subclass: 523 [Patents]

This subclass is indented under subclass 519. Levers specially designed for operation by hand.

SEE OR SEARCH THIS CLASS, SUBCLASS:
473.1 for transmission control systems.
545 for hand cranks.

Subclass: 524 [Patents]

This subclass is indented under subclass 523. Levers which are formed of a plurality of parts which are jointed together.

SEE OR SEARCH THIS CLASS, SUBCLASS:
522 for adjustable levers.

Subclass: 525 [Patents]

This subclass is indented under subclass 523. Levers
provided with means for adjusting their length or their arms with respect to each other.

Subclass: 526 [Patents]

This subclass is indented under subclass 519. Devices positioned in the path of movement of levers to limit their movements.

SEE OR SEARCH THIS CLASS, SUBCLASS:
565 for controller checks.

Subclass: 527 [Patents]

This subclass is indented under subclass 469. Elements used in connection with fixed and movable members and especially adapted to check or arrest motion.
(1) Note. Complete the search for this subject matter in Class 70, Locks, subclasses 192+, wherein the detent is, is operated, or is controlled by a lock.

SEE OR SEARCH THIS CLASS, SUBCLASS:
475 for detents for transmission controls.
495 for position controllers for steering posts.

SEE OR SEARCH CLASS:
70, Locks, 192 and see (1) Note, supra.
166, Wells, 237 and the subclasses there noted for detents in wells.
292, Closure Fasteners, appropriate subclasses, especially those titled with catch or detent.

Subclass: 528 [Patents]

This subclass is indented under subclass 527. Detents cooperating with hand cranks to prevent accidental movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:
473.1 for transmission controls.

Subclass: 529 [Patents]

This subclass is indented under subclass 527. Devices in which a detent acts on one element of the system to hold it in a predetermined position, the detent being connected to a second member of the system, and in order to release the element, the second member must first be operated to release the detent.

SEE OR SEARCH THIS CLASS, SUBCLASS:
478 for multiple foot operated control systems.
479 for systems having multiple controlling elements.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 13, for interconnected clutch and brake.

Subclass: 530 [Patents]

This subclass is indented under subclass 527. Detents which consist of a body with a plurality of teeth which cooperate with similar teeth on the positioned member.

Subclass: 531 [Patents]

This subclass is indented under subclass 527. Detents which have friction surfaces engaging the positioned member.

SEE OR SEARCH THIS CLASS, SUBCLASS:
502 and 503, for systems having slidable members.
539 for lever carried racks for cooperation with detents.

Subclass: 532 [Patents]

This subclass is indented under subclass 527. Detents consisting of hooks or struts which are engaged by a lever when it moves to a predetermined position.

Subclass: 533 [Patents]

This subclass is indented under subclass 527. Detents consisting of a toothed rack member with which a lever is adapted to be moved into engagement, the engaged tooth of the rack acting as a detent.

Subclass: 534 [Patents]

This subclass is indented under subclass 533. Devices wherein the toothed rack member is pivoted.

Subclass: 535 [Patents]

This subclass is indented under subclass 533. Detents consisting of devices pivoted on a lever and adapted to fall into notches or teeth in a fixed member to restrain the lever from back motion.

Subclass: 536 [Patents]

This subclass is indented under subclass 533. Devices in which the detent is released by a handle carried by the lever.

SEE OR SEARCH THIS CLASS, SUBCLASS:
479 for multiple controlling elements for link and leverage systems.

Subclass: 537 [Patents]

This subclass is indented under subclass 533. Devices in which the detent is released by a lever which is so positioned on the control lever that it can be actuated by the fingers at the time of operation of the control lever.

Subclass: 538 [Patents]

This subclass is indented under subclass 537. Devices wherein finger levers are connected to the detent by a member slidably mounted on the control lever.

Subclass: 539 [Patents]

This subclass is indented under subclass 533. Detents which are controlled by a pedal connected to the pawl.

Subclass: 540 [Patents]

This subclass is indented under subclass 527. Detents which consist of a fixed member which cooperates with the teeth of a rack which is carried by a lever.

Subclass: 541 [Patents]

This subclass is indented under subclass 540. Devices in which the rack is pivoted to the lever.

Subclass: 542 [Patents]

This subclass is indented under subclass 540. Devices in which the racks are connected to a pedal which controls their position and effects their release from an operative position.

Subclass: 543 [Patents]

This subclass is indented under subclass 469. Elements adapted to be grasped by the hand in lifting or using when claimed in combination with essential mechanical movement structure or which is definitely limited in use or application to the mechanical movement art.

SEE OR SEARCH THIS CLASS, SUBCLASS:
557 for handles for hand wheels.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 110, when handle structure only is claimed without special art limitations.
242, Winding, Tensioning, or Guiding, 283 for specific handles incorporated in fishing reels.

Subclass: 544 [Patents]

This subclass is indented under subclass 543. Devices which are adapted to be detachably secured to handles to facilitate their control from a remote point.

SEE OR SEARCH THIS CLASS, SUBCLASS:
546 for extensible hand cranks.
562 for extension pedals.

Subclass: 545 [Patents]

This subclass is indented under subclass 543. Devices for causing rotation about an axis, consisting of a member extending at right angles to the axis and a hand grip attached to the free end of the member.

Subclass: 546 [Patents]

This subclass is indented under subclass 545. Devices in which the length of the crank arm is adjustable.

SEE OR SEARCH THIS CLASS, SUBCLASS:
544 for extension handles.

Subclass: 547 [Patents]

This subclass is indented under subclass 545. Devices in which the handle or crank arm may be folded or otherwise collapsed when not in use.

Subclass: 548 [Patents]

This subclass is indented under subclass 543. Devices for connecting a handle to a shaft in which the connections between the shaft and handle are either controlled by the handle itself or by a mechanism mounted on the handle.

SEE OR SEARCH CLASS:
292, Closure Fasteners, 348, for analogous joints between door knobs and latch spindles.
403, Joints and Connections, 230 for joints of general application between a rod and a base, plate or head.

Subclass: 550 [Patents]

This subclass is indented under subclass 548. Devices between an engine crank shaft and the hand crank where there is no back-fire protective device incorporated.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 185.1, for engine hand starter connections combined with a back-fire protective device.

Subclass: 551 [Patents]

This subclass is indented under subclass 550. Devices for holding an engine starter crank in a predetermined position
when not in use.

Subclass: 551.1 [Patents]

This subclass is indented under subclass 543. Devices in the form of a handle bar for a bicycle or like device.

SEE OR SEARCH CLASS:
403, Joints and Connections, appropriate subclasses for mere joints including joints for securing a bar to a steering post. The mere naming of the elements will not exclude joint subject matter from Class 403.

Subclass: 551.2 [Patents]

This subclass is indented under subclass 551.1. Devices in which the bar is spring biased or supported for shock absorbing purposes.

Subclass: 551.3 [Patents]

This subclass is indented under subclass 551.1. Devices in which the bar is foldable or adjustable relative to the post.

Subclass: 551.4 [Patents]

This subclass is indented under subclass 551.3. Devices in which the bar is made up of separate sections.

Subclass: 551.5 [Patents]

This subclass is indented under subclass 551.4. Devices in which the sections are constrained to move simultaneously.

Subclass: 551.6 [Patents]

This subclass is indented under subclass 551.3. Devices in which the bar is continuous from end to end.

Subclass: 551.7 [Patents]

This subclass is indented under subclass 551.6. Devices in which the bar is locked in adjusted position by means of a latch operable from hand grip of the bar.

SEE OR SEARCH CLASS:
403, Joints and Connections, 321 for joint structure having a manipulable latch.

Subclass: 551.8 [Patents]

This subclass is indented under subclass 551.1. Attachments and accessories specially designed for use with handle bars.

Subclass: 551.9 [Patents]

This subclass is indented under subclass 551.1. Handholds and grips for handle bars.

SEE OR SEARCH THIS CLASS, SUBCLASS:
558.5 and see the notes thereto for covers and protectors for the operating end of a lever or a handle.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 110, for handles in general.

Subclass: 552 [Patents]

This subclass is indented under subclass 543. Devices
comprising hand operated control wheels, e.g., steering wheels.

SEE OR SEARCH CLASS:
29, Metal Working, 894, for the method of making wheels.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses for molding or shaping processes within the class definition which may include molding of a wheel.

Subclass: 553 [Patents]

This subclass is indented under subclass 552. Devices comprising hand operated rounded or wheel-shaped members adapted for attachment to a rotary shaft.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, subclass 121, for knobs.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses for molding or shaping processes within the class definition which may include molding and uniting.
292, Closure Fasteners, subclass 347, for door knobs.
403, Joints and Connections, 230 for a rod connected transversely to a plate.

Subclass: 554 [Patents]

This subclass is indented under subclass 552. Hand wheels having connections with rotary shafts which permit the hand wheel to be slid to inoperative positions relative to the shafts when not is use.

Subclass: 555 [Patents]

This subclass is indented under subclass 552. Hand wheels which are pivoted to a rotary shaft, the pivoted connection permitting movement of the hand wheel to an inoperative position by rotary motion about the pivotal axis.

Subclass: 556 [Patents]

This subclass is indented under subclass 555. Pivoted hand wheels with locking means for holding the hand wheel in a predetermined position relative to its pivotal axis.

SEE OR SEARCH CLASS:
70, Locks, subclasses 207-224, for the locking means, per se.

Subclass: 557 [Patents]

This subclass is indented under subclass 552. Handles adapted to be grasped by the hand which are attached to a hand wheel to facilitate its operation.

Subclass: 558 [Patents]

This subclass is indented under subclass 552. Devices attached to the wheel rim to facilitate gripping of the wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
558.5 for covers and protectors for the operating end of a lever or a handle.

Subclass: 558.5 [Patents]

This subclass is indented under subclass 543. Devices for covering or cushioning a hand engaging portion of an existing handle.

SEE OR SEARCH THIS CLASS, SUBCLASS:
551.9 for handholds and grips for handle bars.
558 for rim grips and covers for handwheels.
563 for pads and covers for pedals.

Subclass: 559 [Patents]

This subclass is indented under subclass 469. Elements comprising crank arms fixedly attached to oscillatable shafts.

SEE OR SEARCH THIS CLASS, SUBCLASS:
543 for handles.
595 for cranks and wrist pins.

SEE OR SEARCH CLASS:
403, Joints and Connections, 230 for a rod connected transversely to a plate.

Subclass: 560 [Patents]

This subclass is indented under subclass 469. Elements comprising foot engaging levers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
481 for interconnected hand and foot operators for systems.
512 for foot operated systems.
539 and 542, for pedal controlled detents for levers.
594.1 for cranks and pedals.

SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 62, for bicycle pedal actuated bells.
192, Clutches and Power Control, 217.1, for bicycle coaster brakes.

Subclass: 561 [Patents]

This subclass is indented under subclass 560. Levers
designed to impart motion to a mechanism through a connecting rod and crank.

SEE OR SEARCH CLASS:
105, Railway Rolling Stock, subclass 93, for treadle operated trackman's car drives.
451, Abrading, subclass 341 for a double treadle frame or mount for abrading.

Subclass: 562 [Patents]

This subclass is indented under subclass 560. Devices having means connected to or contacting the pedal which constitutes an additional foot engaging portion.
(1) Note. Many of these devices in this subclass are mounted directly on the foot engaging portion of the pedal and either (1) enable operation from a remote point or (2) constitute a lengthening adjustment for the pedal.

SEE OR SEARCH THIS CLASS, SUBCLASS:
480 for devices in which there are a plurality of independently operable control systems which may be connected and operated by a single controlling member.
544 for extension handles.
546 for extensible hand cranks.

Subclass: 562.5 [Patents]

This subclass is indented under subclass 562. Devices wherein the additional foot engaging mechanism is so mounted that its zone of operation is to one side of the zone of operation of the pedal.

SEE OR SEARCH THIS CLASS, SUBCLASS:
478.5 for pedal extensions so positioned that a single foot may operate an additional pedal or controller concurrently with the pedal provided with the extension.

Subclass: 563 [Patents]

This subclass is indented under subclass 560. Devices comprising coverings for the foot engaging portions of pedals.

SEE OR SEARCH THIS CLASS, SUBCLASS:
558.5 and see the notes thereto for covers and protectors for the operating end of a lever or a handle.

Subclass: 564 [Patents]

This subclass is indented under subclass 469. Elements located adjacent pedals to support a portion of the foot during the pedal operation.

SEE OR SEARCH CLASS:
84, Music, subclass 232, for foot rests for piano pedals.
296, Land Vehicles: Bodies and Tops, subclass 75, for foot rests for passengers.
297, Chairs and Seats, 423.1, for a leg-, knee-, or footrest for a seated person particularly subclass 423.17 for laterally bearing leg rest to relieve a leg from strain in operative position of the foot with respect to a pedal for a control lever and linkage system.

Subclass: 565 [Patents]

This subclass is indented under subclass 469. Elements placed in the path of controllers to limit their speed of operation to a predetermined maximum.

SEE OR SEARCH THIS CLASS, SUBCLASS:
526 for lever stops.

SEE OR SEARCH CLASS:
188, Brakes, 266, for an internal resistance brake of general utility.
318, Electricity: Motive Power Systems, 543, for motor controllers.
388, Electricity: Motor Control Systems, 800 and 825+ for
single motor running-speed control systems with, and without, feedback, respectively.

Subclass: 566 [Patents]

This subclass is indented under subclass 469. Elements which are (1) attached to levers to close slots in which such levers move so as to prevent the passage of dust and oil; (2) movable in front of operating members to prevent their accidental operation.

SEE OR SEARCH CLASS:
180, Motor Vehicles, subclass 90.6, for slot closers attached to control levers of an automobile.
474, Endless Belt Power Transmission Systems or Components, particularly 144 for a chain guard.

Subclass: 567 [Patents]

This subclass is indented under the class definition. Elements comprising a rotatable, oscillatable, or reciprocable machine element (usually a plate or a cylinder) having a surface or a groove formed therein of predetermined contour which will impart a prescribed motion of reciprocation or oscillation such as generally cannot be obtained by gear wheels or link motion, to a follower slidably contacting with such surface or groove.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclasses 90.48-90.6, for a cam or a follower in a poppet valve operating mechanism.

Subclass: 568 [Patents]

This subclass is indented under subclass 567. Devices comprising a cam or a part thereof adjustable longitudinally or transversely of its axis of rotation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
838 for adjustable cam changing a stroke "on the fly".

SEE OR SEARCH CLASS:
417, Pumps, 218, for condition responsive control of an adjustable cam type pump drive.

Subclass: 569 [Patents]

This subclass is indented under subclass 567. Devices comprising an element adapted to slidably contact with and to be moved by a cam.

Subclass: 570 [Patents]

This subclass is indented under the class definition. Elements comprising a disk or wheel eccentrically mounted on a shaft and rotatable within a ring, called the eccentric strap, and adapted to be connected by a rod to an object to be reciprocated on rotation or oscillation of said disk or wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:
116 for eccentric drives for rotary to intermittent unidirectional movement.

Subclass: 571 [Patents]

This subclass is indented under subclass 570. Devices wherein the position of the geometric center of the disk or wheel is adjustable to and from, or about, the axis of its carrying shaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:
117 for adjustable eccentric drives for rotary to intermittent unidirectional movement.
835 for adjustable eccentric and strap changing a stroke "on the fly".

Subclass: 572 [Patents]

This subclass is indented under the class definition. Elements comprising wheels and other rotors where the improvements claimed pertain to inertia or momentum characteristics.
(1) Note. Where additional characteristics are claimed which limit the wheel or other rotor to particular arts (as gears, vehicle wheels, centrifugal separators, turbines, dynamos, etc.), the patent will be placed with the appropriate art and cross referenced here, but the mere designation of the device by name will not exclude the same from this subclass or the indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for gyroscopes.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 185.1, for mechanical starting devices.
310, Electrical Generator or Motor Structure, subclass 74 for rotary dynamo-electric devices having a flywheel, subclass 153 for magnetos built into a fly-wheel.
403, Joints and Connections, appropriate subclasses particularly 230 for joints between a rod and a plate.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, appropriate subclasses for flexible shaft couplings.
492, Roll or Roller, for a roll, per se, not elsewhere provided for, and see the notes thereunder.

Subclass: 573 [Patents]

This subclass is indented under subclass 572. Structures having either (1) means forming a part of the rotor, or (2) means operating with the rotor, or (3) both to balance the same.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, subclass 403 and 404, for other weights with or without their supporting means.
29, Metal Working, subclass 6.01 and 888.08, for process and apparatus for balancing crankshafts.
73, Measuring and Testing, 66, for balance testing machines
having fly-wheels with adjustable masses.
116, Signals and Indicators, subclass 330, and 333 for balancing means on indicators or pointers.
310, Electrical Generator or Motor Structure, subclass 51 for electrical generators or motors having means for suppression of vibration or noise.
384, Bearings, 199 for shafts balancing means with bearing.
418, Rotary Expansible Chamber Devices, subclass 151, for weight balanced rotating working members.
451, Abrading, subclass 343 for a grindstone with a balancing means.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, subclass 127 for a flexible coupling with balancing means; and subclass 180, for shafts balancing involving modification of the shafts structure.

Subclass: 574 [Patents]

This subclass is indented under subclass 572. Structures having means capable of movement relative to the rotor or its rotary shaft for damping torsional vibrations and/or smoothing out oscillations or speed variations.

SEE OR SEARCH THIS CLASS, SUBCLASS:
589 for counterbalanced pitmans and connecting rods.
594.5 for counterbalanced pedals for cranks.
603 for counterbalanced cranks and wrist pins.

SEE OR SEARCH CLASS:
73, Measuring and Testing, 514.12, 514.14, 522, and 526 for dampening means peculiarly associated with a responsive mechanism.
188, Brakes, 266, for a fluid-resistance brake or shock absorber of general utility.
310, Electrical Generator or Motor Structure, subclass 93, for electromagnetic devices for damping the angular oscillations of a rotary shaft.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a flexible coupling between a shaft and another member; and subclass 180 for
shaft balancing or vibration damping involving modification of the shaft structure.

Subclass: 575 [Patents]

This subclass is indented under the class definition. Elements limited to the structural details of a pawl or ratchet.

SEE OR SEARCH THIS CLASS, SUBCLASS:
144 for grip units for intermittent grip type mechanical movements, especially subclasses 149+, for power pawl lifters.

SEE OR SEARCH CLASS:
81, Tools, 61, for pivoted pawl type ratchet wrenches or screwdriver heads.
160, Flexible or Portable Closure, Partition, or Panel, subclass 296, 297 and 300+, for ratchet mechanisms, for spring rollers.
188, Brakes, subclass 30, 61 and 82.1+, for one way brakes.
192, Clutches and Power-Stop Control, 41, for one way clutches and 51, for multiple reversing clutches.
235, Registers, subclass 131, for overthrow preventers.
368, Horology: Time Measuring Systems or Devices, 124, for electric clock escapements.
408, Cutting by Use of Rotating Axially Moving Tool, 120, for a tool of that class caused to rotate by a ratchet.

Subclass: 576 [Patents]

This subclass is indented under subclass 575. Devices comprising pawls held out of engagement with the ratchet wheel during rotation of the latter in one direction and moved into engagement with said ratchet wheel on the reverse rotation of the latter.

Subclass: 577 [Patents]

This subclass is indented under subclass 575. Devices comprising pawls mounted for oscillation on a pivot.

Subclass: 578 [Patents]

This subclass is indented under subclass 575. Devices comprising pawls mounted for sliding movement.

Subclass: 579 [Patents]

This subclass is indented under the class definition. Elements comprising an intermediate connector having a bearing at each end for transmitting motion by a push and pull movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:
597 and 598, for sectional cranks and wrist pins.

SEE OR SEARCH CLASS:
29, Metal Working, 428 for processes of assembling bearings in the ends of rods, and subclasses 888.4+ for methods of making poppet valves.
105, Railway Rolling Stock, subclass 84, for locomotive connecting rods.
123, Internal-Combustion Engines, 90.61, for a rod element in a poppet valve operating mechanism.
384, Bearings, 276 for sleeves, or liners.
403, Joints and Connections, 52 for articulated members in general.

Subclass: 580 [Patents]

This subclass is indented under subclass 579. Devices comprising two or more connecting rods operatively connected to the same crank pin.

SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, 491, for expansible chamber type motors having a plurality of radially arranged cylinders.
92, Expansible Chamber Devices, subclass 148 for an expansible chamber device having a plurality of rigidly interconnected radially arranged cylinders.
123, Internal-Combustion Engines, subclass 44 and 54.2+ for an engine of that class type which uses a radial pitman or connecting rod.

Subclass: 581 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods having yieldable means embodied therein for allowing limited relative movement between the ends thereof.

Subclass: 582 [Patents]

This subclass is indented under subclass 581. Devices comprising yieldable means consisting of coil springs, the axes of which extend coincident with or parallel to the longitudinal axis of the connecting rod, giving only linear yieldability.

Subclass: 583 [Patents]

This subclass is indented under subclass 581. Devices comprising yieldable means consisting of fluid means.

Subclass: 584 [Patents]

This subclass is indented under subclass 581. Devices wherein the yieldable means yields only after predetermined pressure has been applied to ends of the link.
(1) Note. The device may include a frangible connection.

SEE OR SEARCH CLASS:
470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus, for safety devices for bolt and rivet making machines.

Subclass: 585 [Patents]

This subclass is indented under subclass 584. Devices wherein the yieldable means consists of a toggle mechanism.
(1) Note. The toggle mechanism as a complete unit must be a part of and movable with the rod. If part of the toggle mechanism is pivoted to any part of the machine the said device is classified with the machine.

Subclass: 586 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods having an adjusting means embodied therein for regulating the length thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:
501.5 for constant tension sustaining devices for flexible cable operators.

SEE OR SEARCH CLASS:
100, Presses, subclass 257 for reciprocating platen presses, not elsewhere provided for, having means to adjust the range of movement of the platens.
123, Internal-Combustion Engines, subclass 48 for adjustable combustion chambers.
188, Brakes, 196 for slack position adjusters.

Subclass: 587 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods having a hollow shank or an oil conduit incorporated therewith, between the opposite bearing ends, whereby lubricant can be supplied to said ends.

SEE OR SEARCH CLASS:
184, Lubrication, subclass 6, for systems and subclass 24, for swab piston-rod lubricators.

Subclass: 588 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods fabricated from sheet metal.

SEE OR SEARCH CLASS:
29, Metal Working, 888.09, for methods of making and assembling pistons and pitmans.
428, Stock Material or Miscellaneous Articles; 544 for stock material, e.g., of indefinite length, which is all metal or has adjacent metal components.

Subclass: 589 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods having counterweights directly attached thereto for balancing the same about a bearing end.

SEE OR SEARCH THIS CLASS, SUBCLASS:
572 for flywheels and rotors.

SEE OR SEARCH CLASS:
267, Spring Devices, 113, for hydropneumatic counter-balances, per se.

Subclass: 590 [Patents]

This subclass is indented under subclass 589. Weight devices for assisting connecting rods to move a load connected thereto.

Subclass: 591 [Patents]

This subclass is indented under subclass 590. Weight devices attached to a rotating arm for assisting the connecting rod to move a load connected thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:
573 for counterbalanced flywheels and rotors.
603 for counterbalanced cranks and wrist-pins.

SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, subclass 403 and 404, and see the notes thereto, for weights, per se.

Subclass: 592 [Patents]

This subclass is indented under subclass 589. Spring devices for assisting the connecting rod to move a load connected thereto.

Subclass: 593 [Patents]

This subclass is indented under subclass 579. Devices in which the rod comprises a pair of sections, each section sliding on a portion of the other, and having a means thereon for coupling and uncoupling said sections whereby one section will move simultaneously with or relatively to the other for transmitting or interrupting the flow of power from one bearing end to the other.

Subclass: 594 [Patents]

This subclass is indented under subclass 579. Devices comprising connecting rods having the end bearings thereof adjustable relative to the shank of the rod.

Subclass: 594.1 [Patents]

This subclass is indented under the class definition.
Elements comprising a unit consisting of an arm rotating about an axis and a crank pin projecting transversely from said arm for the attachment of a foot pedal, the first mentioned axis and the axis of the pin being substantially parallel to each other.
(1) Note. The crank bearing and hanger and the pedal may be included.

SEE OR SEARCH THIS CLASS, SUBCLASS:
560 for foot levers.
595 for cranks and wrist pins.

SEE OR SEARCH CLASS:
301, Land Vehicles: Wheels and Axles, subclass 2.5, for combinations of a wheel, axle and pedal crank.
384, Bearings, subclass 431 for a pedal type crank bearing with support means.
403, Joints and Connections, appropriate subclasses, especially 230 for a joint between a rod and a plate.

Subclass: 594.2 [Patents]

This subclass is indented under subclass 594.1. Units which have a gear attached thereto.

Subclass: 594.3 [Patents]

This subclass is indented under subclass 594.1. Units having incorporated therewith a self-actuated means for adjusting the axis of the pin relative to the axis of rotation of the arm continuously throughout the complete revolution of the arm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
602 for variable cranks and wrist pins.

Subclass: 594.4 [Patents]

This subclass is indented under subclass 594.1. Foot engaging units and their attachment to the crank arm.

SEE OR SEARCH THIS CLASS, SUBCLASS:
560 for pedals, per se.

Subclass: 594.5 [Patents]

This subclass is indented under subclass 594.4. Pedals which have means to counterbalance them so that the foot engaging portion always remains up.

Subclass: 594.6 [Patents]

This subclass is indented under subclass 594.4. Pedals having some means to hold the toe of a shoe on the pedal.

Subclass: 594.7 [Patents]

This subclass is indented under subclass 594.4. Pedals which are adjustable for various width shoes or are adapted to be folded against the crank arm.

SEE OR SEARCH CLASS:
280, Land Vehicles, subclass 294, for pedals with foldable attachments to be used as props.

Subclass: 595 [Patents]

This subclass is indented under the class definition. Elements comprising a unit consisting of an arm rotating or oscillating about an axis and a crank pin projecting transversely from said arm for the attachment of a connecting rod, the first mentioned axis and the axis of the pin being substantially parallel to each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for mechanical movements of the rotary to and/or from
reciprocating or oscillating type.
63 for mechanical movements of the rotary to rotary type.
110 for mechanical movements of the reciprocating to reciprocating type.

SEE OR SEARCH CLASS:
29, Metal Working, subclass 6.01 and 888.08, for methods and apparatus for making crankshafts.
403, Joints and Connections, 52 for articulated rod members in general.

Subclass: 596 [Patents]

This subclass is indented under subclass 595. Units integrally united, the axes of rotation of the arms of each unit being coaxial with each other.

Subclass: 597 [Patents]

This subclass is indented under subclass 596. Units made in sections and subsequently united by bolting, riveting, or welding.

Subclass: 598 [Patents]

This subclass is indented under subclass 595. Units made in sections and subsequently united by bolting, riveting, or welding.

Subclass: 599 [Patents]

This subclass is indented under subclass 595. Units having a yieldable joint between the ends of the crank arm whereby said ends are capable of angular movement relative to each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:
470 for control linkage and leverage systems having resilient connections.

Subclass: 600 [Patents]

This subclass is indented under subclass 595. Units having incorporated therewith a means for adjusting the axis of the pin relative to the axis of rotation of the arm to adjust the throw of the crank.

SEE OR SEARCH THIS CLASS, SUBCLASS:
117 for having adjustable rotary crank drives for intermittent grip type mechanical movements.
837 for adjustable cranks and wrist pins changing a stroke "on the fly".

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 48, for adjustable combustion chambers.

Subclass: 601 [Patents]

This subclass is indented under subclass 600. Units having incorporated therewith means for automatically adjusting the axis of the pin relative to the axis of rotation of the arm according to the speed of rotation of said arm to automatically adjust the throw of the crank.

Subclass: 602 [Patents]

This subclass is indented under subclass 595. Units having incorporated therewith a self-actuated means for adjusting the axis of the pin relative to the axis of rotation of the arm continuously throughout the complete revolution of the arm.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 48, for adjustable combustion chambers and 78, for variable clearance for cycle engines.

Subclass: 603 [Patents]

This subclass is indented under subclass 595. Units having means attached to the arm thereof for counter-acting the centrifugal force exerted by the unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:
591 for weights attached to crank arms for assisting a connecting rod to move a load.

Subclass: 604 [Patents]

This subclass is indented under subclass 603. Units having a device connected thereto for damping vibrations created in/by the unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:
574 for vibration damping means for flywheels and rotors.

SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 192.1, for compensating devices.

Subclass: 605 [Patents]

This subclass is indented under subclass 595. Units having the arm and/or the pin thereof modified for lubricating the peripheral surfaces of the pin.

Subclass: 606 [Patents]

This subclass is indented under the class definition. Elements for inclosing and supporting gearing in assembled relationship.
(1) Note. This subclass and the ones hereunder are limited to the casing structure, per se. If the novelty resides
completely or partially in the inclosed gearing, classification is with the particular type of gearing. If the casing is intended for use with a particular element or apparatus, classification is with the element or the apparatus, respectively.
(2) Note. See Index to Classification of Patents under "Casings".

SEE OR SEARCH THIS CLASS, SUBCLASS:
612 for casing structure movable with respect to its inclosed elements.

SEE OR SEARCH CLASS:
83, Cutting, subclass 440.2, 544+, 814, and 860, for guards for cutting machines.
92, Expansible Chamber Devices, 147 for a plurality of unitarily mounted cylinders combined with a casing or support for a rotary shaft, subclass 161 for a support or frame for an expansible chamber device, and subclass 261 for a crankshaft housing (e.g., crankcase), per se. For a statement of the line between Class 74 and Class 92, see section III of this class definition of Class 92 under SEARCH CLASS 74.
144, Woodworking, 251.1 for a cutter guard for a tool of that Class.
464, Rotary Shafts, Gudgeons, Housings, and flexible couplings for Rotary Shafts, 170 for a housing for a rotary shaft.

Subclass: 607 [Patents]

This subclass is indented under subclass 606. Housings for inclosing and holding automotive differential gearing in assembled relationship.

SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, subclass 581 for a metallic intermediate article in the form of a symmetrical panel.
475, Planetary Gear Transmission Systems or Components, 200 for planetary gear differentials.

Subclass: 608 [Patents]

This subclass is indented under the class definition. Housings for merely inclosing gearing for the express purpose of preventing injury to/by said gearing.
(1) Note. If the structure is adapted to be used with a particular machine, classification is with the machine. However, this subclass and the indented subclasses are limited to structures not otherwise classified and for which no subclass is provided in the art classes.

SEE OR SEARCH THIS CLASS, SUBCLASS:
566 for lever guards.

Subclass: 609 [Patents]

This subclass is indented under subclass 608. Housings, the portion of the gearing inclosed is a wheel member thereof.
(1) Note. For supporting mountings for gear shafts claimed in combination with particular types of gearing, search appropriate gearing subclasses.

SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components, particularly 144 for a guard or housing for a belt and pulley power transmission.

Subclass: 612 [Patents]

This subclass is indented under the class definition. Elements for preventing injury to an operator of a machine during the operation thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:
608 for guards stationary relative to the guarded element.

Subclass: 613 [Patents]

This subclass is indented under subclass 612. Mechanisms comprising guards actuated into protective position by some
part of the machines.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclasses 133-137, for stop mechanisms.

Subclass: 614 [Patents]

This subclass is indented under subclass 613. Mechanisms wherein a part of the machine is an oscillating member.

Subclass: 615 [Patents]

This subclass is indented under subclass 613. Mechanisms wherein a part of the machine is a reciprocating member.

Subclass: 616 [Patents]

This subclass is indented under subclass 612. Means actuated by the operator simultaneously with the starting device of a machine for preventing injury to the operator of such a machine during operating thereof.
(1) Note. This subclass does not include those mechanisms which prevent starting of the machine until the guarding element has been shifted to its proper guarding position, for which see Class 192, Clutches and Power-Stop Control, subclasses 133+.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 133 and see (1) Note, supra.

Subclass: 617 [Patents]

This subclass is indented under subclass 612. Devices for shielding the heads of set screws against injury thereto and/or to persons.

Subclass: 625 [Patents]

This subclass is indented under the class definition. Devices having provision for operation of a single driven device alternately by either manual or power means.

SEE OR SEARCH THIS CLASS, SUBCLASS:
665 for plural concurrent gearing drives.

SEE OR SEARCH CLASS:
30, Cutlery, subclass 203, for shears which may either be hand or power operated.
172, Earth Working, 485 for an earth working implement adapted to be lifted for transport by a power actuator and/or a manual actuator.
251, Valves and Valve Actuation, particularly subclass 14 and 130 for valve actuation involving alternate manual and power actuation.
318, Electricity: Motive Power Systems, subclass 2, for combined controlled electric motors and manual operators for actuating one or more common load devices.
417, Pumps, subclass 374, for pumps having both manual and motor drive means therefor.
475, Planetary Gear Transmission Systems or Components, 1 for input from independent power sources to a planetary gear transmissions.

Subclass: 640 [Patents]

This subclass is indented under the class definition. Mechanism comprising relatively rotatable bodies or combinations of such bodies provided with teeth or interengaging elements, chains and sprockets, belts, and pulleys or other means not otherwise classified, whereby a rotatable body will impart to or receive motion or power from some other member by rolling contact.
(1) Note. EXPLANATORY NOTE: In 1988 a new class (Class 475) was formed by taking all subclasses relating to planetary gearing from Class 74 which appeared below subclass 640 in the Class 74 schedule. However, subclasses appearing above Class 640 in the Class 74 schedule were not screened
for arrangements that might include planetary gearing, and so such higher appearing subclasses should be given consideration for a complete search on planetary gearing combinations.
(2) Note. For guide pulleys and rollers, see Class 474, Endless Belt Power Transmission Systems or Components, appropriate subclasses. Class 193, Conveyors, Chutes, Skids, Guides, and Ways, appropriate subclasses; and 384, Bearing, appropriate subclasses.
(3) Note. The rack of a rack and pinion is here included on the theory that a rack is a portion of the contacting surface of a gear of infinite radius.

SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, appropriate subclasses (and see (2) Note, supra).
352, Optics: Motion Pictures, 166 for gearing specifically adapted for motion picture apparatus.
384, Bearings, appropriate subclasses and see (2) Note, supra.
408, Cutting by Use of Rotating Axially Moving Tool, 124, for drilling machines including drive structure; and see the notes in that class definition.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, 51 for a flexible connection between a shaft and a member driven by the shaft.
474, Endless Belt Power Transmission Systems or Components, and see (2) Note, supra.
475, Planetary Gear Transmission Systems or Components, for planetary gears and planetary gear transmission.

Subclass: 650 [Patents]

This subclass is indented under subclass 640. Gearing, not of the planetary type, wherein a differential action is obtained through some mechanisms other than a planetary gearing, such as e.g., overrunning clutches acting between a driving member and a plurality of driven members, a fluid drive involving plural power paths combined with other gearing, etc. Such structures are commonly designated "gearless" differentials.

SEE OR SEARCH CLASS:
60, Power Plants, subclass 485, for rotary type hydraulic differentials.
192, Clutches and Power-Stop Control, 41, for one way clutches, per se, and see especially subclass 50 for plural clutches associated with parallel vehicle wheels permitting either wheel to overrun.
475, Planetary Gear Transmission Systems or Components, 220, for planetary gear differentials.

Subclass: 655 [Patents]

This subclass is indented under subclass 640. Gearing units wherein a fluid drive mechanism is included as a part of the intermediate internal mechanism of a single gearing unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:
730.1 and see the notes thereto, for combined gearing and fluid drives.

Subclass: 661 [Patents]

This subclass is indented under subclass 640. Gearing in which means are provided to connect plural prime motors either individually or unitarily to the same load.

SEE OR SEARCH CLASS:
60, Power Plants, 698 for a residual system of plural motors.
475, Planetary Gear Transmission Systems or Components, 1, for plural power inputs to planetary gearing.

Subclass: 664 [Patents]

This subclass is indented under subclass 640. Gearing wherein a single prime mover drives plural power paths, at least one path involving a gearing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
661 for plural prime movers selectively coupled to common
output.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 6.2 for a motor vehicle which is steered by creating a difference between the driving effort developed by one or more traction elements located on one side of the vehicle and the driving effort developed by one or more traction elements located on the other side thereof, which may involve the control of plural power paths emanating from a prime mover.
475, Planetary Gear Transmission Systems or Components, for plural power paths to or from planetary gearing.

Subclass: 665 [Patents]

This subclass is indented under subclass 640. Gearing in which a plurality of power paths constitute either the input or the output of the gearing.
(1) Note. For the most part, the gearing serves either to divide a single input into a plurality of outputs, or combine a plurality of inputs into a single output.

SEE OR SEARCH THIS CLASS, SUBCLASS:
11 for power take offs.
625 for alternate manual and power operators in general.
661 for plural prime movers selectively coupled to common output.
810.1 for nonplanetary gearing wherein reverse torque changes power transmission to an alternate path.

SEE OR SEARCH CLASS:
180, Motor Vehicles, 6.2 as explained in the reference thereto appearing in subclass 664 above.
188, Brakes, appropriate subclasses, for brakes mounted on motor vehicles, not structurally related to a gearing (which is not specifically claimed) for controlling the gearing; i.e., brakes on the rear axle which are independently operable and hence incidentally control the relative output of the differential.
192, Clutches and Power-Stop Control, the un-numbered title "Interrelated power delivery controls" and see the notes thereto for interrelated control of one or more of prime movers, clutches, gearing, brakes and loads by name only.
408, Cutting by Use of Rotating Axially Moving Tool, 31, for the combination of plural tools of that class type combined with drive means utilizing plural power path gearing.
475, Planetary Gear Transmission Systems or Components, for plural power paths to or from planetary gearing.

Subclass: 670 [Patents]

This subclass is indented under subclass 665. Gearing in which a separable operating crank may be applied at any one of a plurality of points to actuate the driven shaft directly or through gearing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for alternate manual and power operators.

Subclass: 718 [Patents]

This subclass is indented under subclass 665. Gearing wherein a fluid drive either divides or combines alternate plural power paths to and/or from the gearing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
730.1 and see the notes thereto, for combined gearing and fluid drives.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 31, for fluid drive combined with planetary gearing.

Subclass: 720 [Patents]

This subclass is indented under subclass 665. Gearing wherein a fluid drive is included in one of the plural paths.

Subclass: 721 [Patents]

This subclass is indented under subclass 665. Gearing in which the gearing is of the friction type.

SEE OR SEARCH CLASS:
476, Friction Gear Transmission Systems or Components, for friction gear transmissions, per se.

Subclass: 724 [Patents]

This subclass is indented under subclass 665. Gearing wherein the gearing unit is of worm gear type.

SEE OR SEARCH THIS CLASS, SUBCLASS:
425 for worm type gearing, per se.

Subclass: 730.1 [Patents]

With fluid drive:
This subclass is indented under subclass 640. Subject matter wherein gearing is combined with a fluid force torque transmitting device to form a drive train.

SEE OR SEARCH CLASS:
60, Power Plants, 325 for the various pumpmotor drives, per se.
192, Clutches and Power-Stop Control, 3.21 for a fluid drive of the impeller-turbine type combined with a clutch and 3.34 for the combination with a brake.
475, Planetary Gear Transmission Systems or Components, 22 for fluid drives used for steering by driving and 31+ for other arrangements of fluid drives with planetary gearing.
477, Interrelated Power Delivery Controls, Including Engine Control, for fluid drives used in combination with interrelated transmission and engine control.

Subclass: 731.1 [Patents]

Condition responsive control:
Subject matter under subclasses 730.1 wherein means are
provided to sense a condition or change of condition in the drive train and in response to such sensing effect a control function on the drive train.
(1) Note. Usually the control function is a change in the speed ratio.

SEE OR SEARCH THIS CLASS, SUBCLASS:
336 and 337, for automatic ratio change nonplanetary gearing.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, subclass 19, 42, 43, 48+, 51, 60+, 76+, 94+, 118+, 125+, 153, 186, 199, 208, and 254+ for various planetary transmission with condition responsive control.

Subclass: 732.1 [Patents]

With one or more controllers for gearing, fluid drive, or clutch:
This subclass is indented under subclass 730.1. Subject matter wherein means is provided to regulate the operation of the gearing or fluid drive; or to regulate the operation of a clutch.

Subclass: 733.1 [Patents]

With interrelated controls:
This subclass is indented under subclass 732.1. Subject matter wherein two of the regulating means are either controlled by a single actuator or are otherwise related such that the operation of one affects the operation of the other.

SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 3.51 and 215+ for other interrelated power delivery controls.
477, Interrelated Power Delivery Controls, Including Engine Control, for interrelated controls including a control for an engine.

Subclass: 745 [Patents]

This subclass is indented under subclass 640. Gearing comprising a plurality of interchangeably locked nonplanetary gearing units arranged in series.

SEE OR SEARCH THIS CLASS, SUBCLASS:
625 650 and 665+, for other plural gearing units.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 207 for nonplanetary transmission combined with a planetary transmission.

Subclass: 810.1 [Patents]

Reversal of direction of power flow changes power transmission to alternate path:
This subclass is indented under subclass 640. Subject matter having two alternately usable parallel power transmitting paths between a single input and a single output so arranged that (1) the interchange of the input and output relationship or (2) the change of direction of rotation of the input, changes the path through which the power is transmitted.

SEE OR SEARCH THIS CLASS, SUBCLASS:
6 and see the notes thereto for mechanical movements or gearing for initiating the starting of a machine.
352 for change speed gearing including gears movable laterally with respect to the longitudinal axis of the transmission into mesh with a cooperating gear.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 12 for planetary gearing utilized to perform this function.

Subclass: 810.2 [Patents]

Input and output exchange functions:
This subclass is indented under subclass 810.1. Subject matter wherein in response to the interchange of roles between the transmission input member and the transmission output member the path through which power is transmitted is changed.
(1) Note. To be placed herein the transmission must have a useful load at each of its input and output ends. Most of the
patents herein disclose either motor-generators or motor-pumps used to start an engine which in turn drives the generator or pump.

SEE OR SEARCH CLASS:
290, Prime-Mover Dynamo Plants, subclass 38 for gearing of this type combined with significant generator structure.
475, Planetary Gear Transmission Systems or Components, subclass 13 for this combination utilizing planetary gearing.

Subclass: 813 [Patents]

This subclass is indented under the class definition. Assemblies having (1) means for applying torque to a shaft or other rotatably mounted device to turn the shaft or other device about its axis to one or more selected loci, and (2) means to prevent or hold against rotation in at least one direction at such loci.
(1) Note. EXPLANATORY NOTE: This and indented subclasses represents an initial step toward gathering together the "indexing" or "turret" art hitherto distributed on the basis of the disclosed associated operations. Pertinent subclasses from Classes 29 and 90 have been screened to provide the necessary art for initial classification. Integration with the preceding subclasses (10+) of this class (74), now limited to electronic tuning shafts, is contemplated in the future. Similarly, as other appropriate bodies of art are screened, such art as meets the above definition will be classified here and so noted below as well as in the Notes to said bodies of art.
(2) Note. The Notes under subclass 10 of this class (74) must be studied for both the line with other classes and for fields of search inasmuch as they apply with equal force to this and indented subclasses.
(2) Note. Where, in addition to means for applying torque and means for preventing rotation, the turret structure to hold either work or tool is recited in the claims the art is deemed to go beyond the scope of this and indented subclasses (813+).
(4) Note. The term "turret", per se, is considered equivalent to "rotatably mounted device". Included in this and indented subclasses (813+) are assemblies wherein a rotatably mounted device or "turret" is recited as a named load on a shaft. The inclusion of tool or work holding means on said load is sufficient to bar classification here (813+) and such combinations are classified on the basis of
associated operations. For example; "a tool holding turret" is properly classified here, while "a turret with tool holding means" or "a turret with screw means to hold a work piece is not.

SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for assemblies particularly adapted for mechanically rotating one or more shafts of electronic tuning devices into desired angular positions.

SEE OR SEARCH CLASS:
29, Metal Working, 35.5, inclusive, for turrets including means to hold either the work or tool, and see (3) Note above.
33, Geometrical Instruments, subclass 19 for means for scribbing scale divisions on dials and the like, and subclasses 568+ for gages used to establish desired angular position. Devices including mere indicia means rather than means to prevent or hold against rotation are classified in Class 33 as are indicia devices which do not include means for applying torque.
40, Card, Picture, or Sign Exhibiting, subclass 112, and various subclasses under subclass 446 for clutch take-up devices.
100, Presses, subclass 223 for reciprocating presses including rotary indexing material supports and see the search notes thereunder.
188, Brakes, subclass 68 for combined friction and positive locks, subclass 69 for positive locks, per se, and subclasses 70-79.5 for friction locks.
279, Chucks or Sockets, subclass 5 for angularly adjustable or indexing devices of the chuck or socket type.
408, Cutting by Use of Rotating Axially Moving Tool, subclass 35, for a multiple drill spindle turret, and subclasses 71 and 89+, for indexing work positioners used in conjunction with drilling and boring machines.
409, Gear Cutting, Milling, or Planing, 221 for a position index device including means to hold the work or tool, and see (3) Note above.
451, Abrading, especially subclass 149, 247+, and 292 for a turret-type work positioner.

Subclass: 814 [Patents]

This subclass is indented under subclass 813. Devices including mechanism which prevents the assembly from improper functioning and/or responds to some imperfection, deficiency or fault in the functioning of the assembly to prevent further functioning.

Subclass: 815 [Patents]

This subclass is indented under subclass 813. Devices having one member on one part and another member on the other part which, by contact together, constitute a means for determining the angular position of the shaft, and in which at least one member is provided with means to change its position on the part and/or its point of contact with the other member.

Subclass: 816 [Patents]

This subclass is indented under subclass 813. Devices having means to interrupt and stop rotation of the shaft at a physically predestined position.
(1) Note. The interruption of rotation responsive to a determination on the part of a human operator is not considered to be physically predestined.

Subclass: 817 [Patents]

This subclass is indented under subclass 816. Devices having a single initiator or source of power for rotating the shaft or load and having means to halt the shaft or load at each of a series of successive, predetermined positions.

Subclass: 818 [Patents]

This subclass is indented under subclass 817. Devices having means to cause the load or shaft to pass one or more preselected positions without stopping thereat.

Subclass: 819 [Patents]

This subclass is indented under subclass 817. Devices having means to generate a rotating force to provide the angular repositioning of the shaft or load and using all or part of that force to hold the body against a position stop.
(1) Note. This is usually accomplished by means of allowing the motor to stall without deenergization.

SEE OR SEARCH CLASS:
318, Electricity: Motive Power Systems, subclass 436 for nonrunning energized electric motors.

Subclass: 820 [Patents]

This subclass is indented under subclass 817. Devices having either a mutilated or a Geneva type gearing as defined in this class, subclasses 435 and 436, respectively.

SEE OR SEARCH THIS CLASS, SUBCLASS:
435 and 436, for mutilated and Geneva gearing, respectively.

Subclass: 821 [Patents]

This subclass is indented under subclass 817. Devices having additional means to vary the speed of rotation of the shaft or load as a predetermined position is approached.
(1) Note. The speed is usually decelerated as it approaches the position.

Subclass: 822 [Patents]

This subclass is indented under subclass 817. Devices wherein a common initiator or common source of power both turns the shaft or load and either permits rotation or prevents further rotation - the operation of turning is a condition precedent or subsequent to the operation of
permitting or preventing rotation.

Subclass: 823 [Patents]

This subclass is indented under subclass 822. Devices wherein the means permitting or preventing rotation comprises at least two distinct types of holding means, e.g., friction brake and positive brake.

Subclass: 824 [Patents]

This subclass is indented under subclass 823. Devices wherein the operation of one of the holding means is effected by relative movement between radial face brake surfaces along the axis of the shaft or load.

Subclass: 825 [Patents]

This subclass is indented under subclass 813. Devices having at least two means for applying torque to the shaft or rotatably mounted device.

Subclass: 826 [Patents]

This subclass is indented under subclass 813. Devices wherein the means to prevent or hold against shaft or load rotation includes a means to effect relative movement between radial surfaces along the axis of the shaft or load.

Subclass: 827 [Patents]

This subclass is indented under subclass 813. Devices wherein a rotary input, in multiples of 360 deg. rotation, provides a turning of the shaft or rotatably mounted device, one increment of predestined angular rotation per multiple.

Subclass: 828 [Patents]

This subclass is indented under the class definition. Mechanism comprising a reciprocating or oscillating-motion driven device provided with means to adjust the length and/or position of the stroke of the driven device while the mechanism continues in operation.
(1) Note. This and the indented subclasses were established (1963) on the basis of patents originating in the art of expansible chamber motors. Similar organizations of mechanical movements or gearing may be found in this class in subclasses below providing for some aspect of the total organization provided for in this group of subclasses. No attempt has been made to screen the subclasses below to remove such art.
(2) Note. This and indented subclasses may include either gearing or mechanical movement mechanisms or combination gearing and mechanical movement mechanisms.

SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for parts having a mechanical movement but including a total organization as provided for in this group of subclasses, see (1) Note.

SEE OR SEARCH CLASS:
475, Planetary Gear Transmission Systems or Components, 14, for planetary gearing used to provide a cyclical or intermittent drive.

Subclass: 829 [Patents]

This subclass is indented under subclass 828. Mechanisms wherein the driven device has a stroke of nonvariable length with means for changing the position of the stroke relative to a stationary part of the mechanism.

Subclass: 830 [Patents]

This subclass is indented under subclass 829. Mechanisms wherein changing of the position of the stroke is caused mechanically by the alternating-motion imparted to the driven device.

Subclass: 831 [Patents]

This subclass is indented under subclass 828. Mechanisms wherein the stroke can be diminished to the point of no motion and/or be caused to act in a direction cyclically opposite to that in which it has been operating.

Subclass: 832 [Patents]

This subclass is indented under subclass 831. Mechanisms having two or more driving motions for simultaneously or commonly driving the alternating motion driven device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
665 for plural driving means without adjusting means and see (1) Note to subclass 828.

Subclass: 833 [Patents]

This subclass is indented under subclass 831. Mechanisms having an oscillating link driving the alternating-motion driven device from chosen positions along the link.

Subclass: 834 [Patents]

This subclass is indented under subclass 831. Mechanisms wherein the means to diminish or reverse the stroke includes a lever having a driving input connection, a driven output connection, and a pivot connection for the lever which is adjustable along the lever to vary the movement arm thereof.

Subclass: 835 [Patents]

This subclass is indented under subclass 831. Mechanisms wherein the means to diminish or reverse the stroke includes
an eccentric and strap drive with the position of the eccentric being adjustable relative to a stationary part of the machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for features of the adjustable eccentric and strap, per se, and see (1) Note to subclass 828.

Subclass: 836 [Patents]

This subclass is indented under subclass 835. Mechanisms having means to vary the amount of eccentricity.

SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for features of the adjustable eccentric and strap, per se, and see (1) Note to subclass 828.

Subclass: 837 [Patents]

This subclass is indented under subclass 831. Mechanisms having an off-center pin drive with the position of the pin being adjustable to diminish or reverse the stroke.

SEE OR SEARCH THIS CLASS, SUBCLASS:
600 for features of adjustable cranks and wrist pins, per se, and see (1) Note to subclass 828.

Subclass: 838 [Patents]

This subclass is indented under subclass 831. Mechanisms having a cam-driven follower causing movement of the driven device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
568 for adjustable cams, per se, and see (1) Note to subclass 828.

Subclass: 839 [Patents]

This subclass is indented under subclass 838. Mechanisms having a rotating or oscillating cam which causes movement of its follower substantially parallel to the cam axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:
568 for adjustable cams, per se, and see (1) Note to subclass 828.

Subclass: 840 [Patents]

This subclass is indented under the class definition. Mechanisms comprising means to drive a load device in a circular or orbital path about a fixed axis lying either within or outside the confines of the device and having means operable while the mechanism is in motion to change the location of the device relative to supporting structure which does not partake of all motions of the device.
(1) Note. This and the indented subclasses were established (1963) on the basis of patents originating in the arts of expansible chamber motors and boring or penetrating the earth. Similar organizations of mechanical movements or gearing may be found in this class in subclasses below providing for some aspect of the total organization provided for in this group of subclasses. No attempt has been made to screen the subclasses below to remove such art.
(2) Note. This and indented subclasses may include either gearing or mechanical movement mechanisms or combination gearing and mechanical movement mechanisms.

Subclass: 841 [Patents]

This subclass is indented under subclass 840. Mechanisms wherein the location changing means include a screw and nut mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8 for screw and nut mechanisms, per se, and see (1) Note to subclass 840.

Subclass: 842 [Patents]

This subclass is indented under subclass 840. Mechanisms wherein the location changing means includes a rack and pinion mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for rack and pinion mechanisms, per se, and see (1) Note to subclass 840.


CROSS-REFERENCE ART COLLECTIONS


Subclass: 900 [Patents]

PARTICULAR SHIFT PATTERN:
Collection of art disclosing a transmission control element or mechanism manipulated through a specific pattern or path.

FOREIGN ART COLLECTIONS

The definitions for FOR 100-FOR 104 below correspond to the definitions of the abolished subclasses under Class 74 from which these collections were formed. See the Foreign Art Collections schedule for specific correspondences. {Note: The titles and definitions for indented art collections include all the details of the one (s) that are hierarchically superior.

Subclass: FOR 100

Foreign Art Collections for systems for manually controlling transmissions.

Subclass: FOR 101

Foreign Art Collections for systems for manually controlling transmissions in which the control member is foot operated.

Subclass: FOR 102

Foreign Art Collections for systems in which there are stop or checking devices used in conjunction with a member of the transmission control system to hold that member in a
predetermined position until moved therefrom by an application of force transmitted to the member from the control system.

Subclass: FOR 103

Foreign Art Collections for systems in which there are stops which prevent accidental or unintentional shifting into reverse.

Subclass: FOR 104

Foreign Art Collections for systems in which there are devices which are operated by elements of the system for preventing simultaneous movement of the shift rods.


Information Products Division -- Contacts

Questions regarding this report should be directed to:

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Information Products Division
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tel: (703) 306-2600
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email: oeip@uspto.gov


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Last Modified: 6 October 2000