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

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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.

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

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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.

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.

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526 for lever stops.
565 for controller checks.

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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.

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.

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

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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.

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.

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"

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.

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

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.

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.

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.

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.

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.

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.

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

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.

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

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.

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.

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.

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.

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

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.

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.

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

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

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

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.

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.

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

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

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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

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

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.

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

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

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.

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.

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.

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.

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.

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

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

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.

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.

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.

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.

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.

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

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

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

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.

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

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.

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

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

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.

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.

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.

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

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.

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

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

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

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

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.

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.

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".

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.

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.

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.

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.

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.

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.

Mechanical movements for changing rotary motion to rotary motion.

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.

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

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

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

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

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

Mechanical Movements for converting rotary motion to alternating rotary motion.

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

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.

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.

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.

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.

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

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

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.

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.

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

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

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

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.

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.

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.

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.

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.

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

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.

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.

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.

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

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.

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.

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.

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.

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.

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

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.).

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.

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

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.

Mechanical movements for converting oscillating motion to oscillating motion.

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.

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.

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

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

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.

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.

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

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

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.

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.

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.

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.

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.

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.

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

Mechanical movements for changing reciprocating motion to reciprocating motion.

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.

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.

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

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.

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.

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.