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CLASS 105,	RAILWAY ROLLING STOCK
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SECTION I - CLASS DEFINITION

This class is restricted to wheeled transportation equipment for railways. The rolling stock or equipment may be for use on monorail, two-rail, elevated, suspended, or cable railways.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

Patents for railway wheel rolling stock under the class definition comprising a plurality of wheeled cars or train elements adapted to be attached trailingly together and adapted to travel sequentially along a rail and axles are separately classified in Class 295, Railway Wheels and Axles.

SECTION III - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

SUBCLASSES

1.1	STREAMLINE FORM ROLLING STOCK:
	This subclass is indented under the class definition.  Rolling stock having exterior surface configuration designed to promote smooth airflow thereover when passing through the air, so as to create a minimum amount of resistance of the train to movement and to create a minimum of air turbulence.

1.2	Airlift or ducted:
	This subclass is indented under subclass 1.1.  Rolling stock of such configuration that ambient air is forced vertically upward by the rolling stock passing therethrough; or including a tublike passage to direct air from a high pressure surface of the rolling stock to a relatively low pressure surface thereof. (1) Note. Control of vertical movement of air, e.g., provision to prevent disturbance of overhead power lines, etc., is included herein. SEE OR SEARCH THIS CLASS, SUBCLASS: 74, for a locomotive having an inclined planar surface intended to react with ambient atmosphere to increase downward pressure on the wheels to thereby increase traction.

1.3	Having laterally movable air directing member:
	This subclass is indented under subclass 1.1.  Train including air flow controlling structure movable normally with respect to the remainder thereof and with respect to the direction of travel. (1) Note. Included herein is a streamline surface on the front of a locomotive shiftable to provide access to a front coupler. (2) Note. A laterally movable member intended to interrupt smooth air flow and provide increased friction, i.e., a brake, is included in this subclass.

1.4	TRAINS:
	This subclass is indented under the class definition.  Rolling stock comprising a plurality of wheeled cars or train elements adapted to be attached trailingly together and adapted to travel sequentially along a rail.

1.5	Toy or model train:
	This subclass is indented under subclass 1.4.  Train intended for entertainment, of inadequate size to be used for transportation of people and not intended to be used for transportation of produce. (1) Note. A model train, even though structurally identical to a conventional train is included in this subclass, since it is not for transportation of people or produce.

3	Articulated:
	This subclass is indented under subclass 1.4.  Train (a) comprising plural cars pivotally connected but not readily detachable from each other; or (b) including a first car supporting truck connected to a second car supporting truck so that they mutually interact to steer each other or prevent excessive independent oscillation of the cars when traveling over straight and variously curved track. (1) Note. A coupling, per se, not specifically provided for elsewhere, for an articulated train is included herein. SEE OR SEARCH THIS CLASS, SUBCLASS: 175.1, for a railway truck including three or more wheels engaging a single rail, with provision to allow lateral movement of at least one wheel so that the truck can round a turn. SEE OR SEARCH CLASS: 213,  Railway Draft Appliances,   subclasses 62 through 72for a rigid train drawbar, per se. 410,  Freight Accommodation on Freight Carrier,   subclass 45 for articulated car structure for hauling a massive article.

4.1	Two-car truck:
	This subclass is indented under subclass 3.  Articulated train including a truck adapted to support one end of each of two adjacent car bodies. (1) Note. A two-car truck, per se, is considered to be a "train" since it supports a first and a second car.

4.2	Separable bogie:
	This subclass is indented under subclass 4.1.  Articulated train in which the truck is adapted to be separated into distinct members each including support wheels and each adapted to support one of the adjacent car bodies.

4.3	Truck under first car, second car carried by first:
	This subclass is indented under subclass 4.1.  Articulated train including a truck supporting the end of a car, which car supports the mating end off a second car.

4.4	Including wheel steering provision:
	This subclass is indented under subclass 4.1.  Articulated train including a truck supporting the end of a car, which car supports the mating end of a second car. SEE OR SEARCH THIS CLASS, SUBCLASS: 165 through 170, for a truck including a plurality of axles with provision to allow each to turn about an axis that intersects the axis of track curvature, especially subclass 169 for such a truck including a stub axle. 176, for a truck adapted to be interconnected with another truck. 180, for a truck including a stub axle, generally.

5	Nontelescoping:
	This subclass is indented under subclass 1.4.  Devices for avoidance of telescoping of cars or locomotives in case of collision.

6	Bevel ended:
	This subclass is indented under subclass 5.  Nontelescoping locomotives or cars having bevel ends or inclines for opposite lateral diversion of adjacent ends in case of heavy impact.

7	One-track passage:
	This subclass is indented under subclass 1.4.  Trains or cars adapted to pass each other on the same track without collision.

8.1	Vestibule connections:
	This subclass is indented under subclass 1.4.  Train including a connection between adjacent cars in addition to the draft/buff coupler to restrict or otherwise provide for relative movement between the cars, to transmit energy, information, etc., from one car to another and to render the train effectively a continuous unit. (1) Note. Included herein is a car body connection allowing movement of a passenger from one car to another and a car body connection between adjacent freight cars without provision to allow passenger movement. SEE OR SEARCH CLASS: 160,  Flexible or Portable Closure, Partition, or Panel,   appropriate subclasses for such a device not restricted to train structure.

9	Cab and tender:
	This subclass is indented under subclass 8.1.  Devices including special forms of vestibule connection between a locomotive cab and tender or between a tender and car.

10	Face-plate expanders:
	This subclass is indented under subclass 8.1.  Devices including means by which the diaphragm face-plates of adjoining cars are brought together and maintained under pressure in such position.

11	Pneumatic:
	This subclass is indented under subclass 10.  Devices including face-plate expanders in which the object is accomplished by air pressure.

12	Gravity:
	This subclass is indented under subclass 10.  Devices including weighted means for accomplishing the object and also sliding or link connections in which the diaphragm face-plates are brought together and so maintained by the weight of the diaphragms and face-plates.

13	Vertical equalizing:
	This subclass is indented under subclass 10.  Devices including face-plate expanders in which the mechanism is so arranged that movement of one end of the diaphragm face-plate will be transmitted through the mechanism, so as to cause movement of the opposite end of the face-plate.

14	Top bow spring:
	This subclass is indented under subclass 10.  Devices including face-plate expander in which the upper portions of the diaphragm face-plates of adjoining cars are brought together and so maintained by the action of a single-trip bow-spring, and including supporting means for said spring.

15	Diaphragms:
	This subclass is indented under subclass 8.1.  Devices including vestibule-diaphragms forming a closed connection between the car ends.

16	Metallic:
	This subclass is indented under subclass 15.  Devices in which the diaphragm is metallic.

17	Telescopic:
	This subclass is indented under subclass 16.  Devices in which the diaphragm-plates of adjoining cars have telescopic connection or in which the diaphragm-plates and the car-body to which they are attached have telescopic connection. (1) Note. This subclass also includes telescopic metal cover-plates for diaphragms.

18	Bellows fold:
	This subclass is indented under subclass 15.  Devices involving the specific construction of the folding bellows of vestibule-cars, including the composition of fabric, and without regard to the means of fastening same to the car-body or face-plate.

19	Slit plaits:
	This subclass is indented under subclass 18.  Devices including folding-bellows diaphragms in which the legs of the bellows are formed of two separate pieces, with fastening means releasable under tension, so as to allow outward tilting of the face-plate for repairs.

20	Fasteners:
	This subclass is indented under subclass 18.  Devices including means for fastening the folding diaphragms to the car face-plates or the diaphragm face-plates, either permanently or releasably.

21	Face plates:
	This subclass is indented under subclass 8.1.  Devices including specific face-plate construction and also lock or catch means for holding adjoining face-plates in catching engagement.

22	Vertical hanger rod:
	This subclass is indented under subclass 21.  Devices including means for preventing diaphragm face-plates and parts connected thereto from sagging and consisting of resilient vertical hanger-rods extending from the car-body to the face-plate.

23	Curtain releasers:
	This subclass is indented under subclass 8.1.  Devices including releasable means for vestibule-curtains connecting adjacent cars in which the releasing operation takes place automatically on the pulling apart of the cars.

24	Trip handles:
	This subclass is indented under subclass 23.  Devices in which the curtain-handle is pivoted at one end and at the other end releasably held in engagement with a fixed catch member.

25	Twin jaws:
	This subclass is indented under subclass 23.  Devices in which the catch mechanism consists of twin jaws arranged on either the curtain or on the adjoining car and releasably engaging a fixed element on the opposite member.

25.1	Ventilation:
	This subclass is indented under subclass 8.1.  Train including provision to permit passage to ambient atmosphere therethrough.

25.2	Resilient mounting drive connection for shear stress:
	This subclass is indented under subclass 1.4.  Train including drive structure having a portion thereof intended to yield within its elastic limit to prevent destructive failure thereof.

26.05	LOCOMOTIVES:
	This subclass is indented under the class definition.  Rolling stock comprising a railway vehicle (or traction machine) including drive structure having a portion thereof. SEE OR SEARCH THIS CLASS, SUBCLASS: 90.1 through 90.2, for a device under the instant control of a trackman for forcing a railway vehicle to move a short

26.1	Trackman’s-car type:
	This subclass is indented under subclass 26.05.  Devices comprising (1) power propelled railway vehicles operated by a walking attendant or (2) relatively small railway vehicles similar to the hand cars or railway velocipedes classified in this class, subclass 86, but having power propulsion means.

27	Auxiliary function:
	This subclass is indented under subclass 26.05.  Self-propelled power tools and locomotives provided with auxiliary power devices, such as wind-lasses or motors for general use.

28	Turntables:
	This subclass is indented under subclass 26.05.  Self-propelled power tools and locomotives modified by the provision of a turntable, which usually carries the power plant, as in case of a mounted railway crane or excavator. SEE OR SEARCH THIS CLASS, SUBCLASS: 275, for horizontally rotary tilting dumping car bodies. 455, for horizontal rotary rolling stock generally.

29.1	With rack rail engaging drive:
	This subclass is indented under subclass 26.05.  Locomotive including drive structure adapted to engage for propelling thrust, a toothed bar (a) parallel to a support rail therefor or (b) comprising a support rail therefor.

29.2	Toy or model locomotive:
	This subclass is indented under subclass 29.1.  Locomotive intended for entertainment, of inadequate size to be used for transportation of people, and not intended to be used for transportion of produce. (1) Note. A model locomotive, even though structurally identical to a conventional locomotive, is included in this subclass, since it is not for transportion of people or produce. SEE OR SEARCH CLASS: 446,  Amusement Devices: Toys,   subclass 410 for a toy locomotive, generally e.g., a locomotive, etc., which as claimed structure, even if enlarged, would not be a locomotive of the type found in this class.

30	Gripping drivers:
	This subclass is indented under subclass 26.05.  Locomotives having drive wheels which grip the opposite sides or tops and bottoms of a rail or may be pressed against one side of a rail-head.

31	Track pushers:
	This subclass is indented under subclass 26.05.  Locomotives having a propelling mechanism consisting of one or more pusher-bars extending beneath the car and engaging the track or roadbed for pushing the locomotive along the track.

32	Intermittent grip:
	This subclass is indented under subclass 26.05.  Locomotives having incorporated therein either an axle-driving or axle-driven mechanism, there being included as a link in such driving mechanism an intermittent-grip arrangement or, in case of power-motor drive, the grip may be directly on the axle, adapted to be freely moved in one direction and to have driving engagement with the mechanism when moved in the opposite direction.

33	Driver pick-up:
	This subclass is indented under subclass 26.05.  Locomotives having means for raising driving-wheels from the rails, as in case of auxiliary drivers or continuously-running engines, or to get the drivers out of the way, as in case of log-loading machines.

34.1	Powered bogie:
	This subclass is indented under subclass 26.05.  Locomotive including an assembly comprised of a pair of wheels, and supporting framework to carry a distinct vehicle body; constructed for connection to a vehicle-body with capability of swiveling motion as a unit with relation thereto. (1) Note. A bogie including a positively recited "third rail" electrical collector is considered to be a "locomotive" for placement herein. SEE OR SEARCH CLASS: 191,  Electricity: Transmission to Vehicles,   appropriate subclasses for a track-engaging electrical collector, per se, to be used as part of the combined bogie of this subclass.

34.2	Secondary traction device on locomotive:
	This subclass is indented under subclass 34.1.  Locomotive including a first track engaging means for generating thrust to propel the locomotive and, on the same locomotive, a powered bogie also for generating thrust to propel the locomotive.

35	Generating electric:
	This subclass is indented under subclass 26.05.  Locomotives in which a prime mover, such as a stream or explosive-gas engine, runs a dynamo for generating electricity, which supplies current for electric motors to drive the locomotive. SEE OR SEARCH CLASS: 290,  Prime-Mover Dynamo Plants,   subclasses 9 through 29(subclasses indented under "Traction") for arrangements wherein a nonelectric prime mover driven electric generator supplies a traction motor, and subclasses 9 through 21 for prime mover driven generator supplied electric traction motor systems. 318,  Electricity: Motive Power Systems,   subclasses 140 through 158for generator-fed motor systems having generator control. 322,  Electricity: Single Generator Systems,   appropriate subclasses for generator control systems.

36	Turbine:
	This subclass is indented under subclass 35.  Locomotives in which the prime mover is a steam-turbine, commonly called "turbo-electric".

37	Steam:
	This subclass is indented under subclass 26.05.  Locomotives in which steam furnishes the motive power. (1) Note. This subclass is limited to the driving connections and arrangement and location of parts on the frame.

38	Turbine:
	This subclass is indented under subclass 37.  Locomotives in which a rotary piston or steam-turbine wheel is used as the prime mover. SEE OR SEARCH THIS CLASS, SUBCLASS: 61.5, for a locomotive prime mover comprising a turbine driven by gaseous products of combustion.

39	Compound:
	This subclass is indented under subclass 37.  Locomotives of the compound type in which steam exhausts from a high- to a low-pressure cylinder. (1) Note. This subclass merely relates to the driving connections and general arrangement of cylinders on a locomotive.

40	Articulated boilers:
	This subclass is indented under subclass 37.  Locomotives having boilers provided with flexible steam tight joints, so that the boiler may flex in going around a curve.

41	Center firebox twin:
	This subclass is indented under subclass 37.  A double locomotive built together rear to rear, so that the fire-boxes are at the center of the locomotive.

42	Transverse cylinder:
	This subclass is indented under subclass 37.  Locomotives in which the piston-cylinders have their axes at right angles to the length of the locomotives.

43	Boilers:
	This subclass is indented under subclass 37.  Locomotive apparatus comprising boilers. (1) Note. This subclass includes only such patents as relate to boiler shape, arrangement, or fastenings designed for use on locomotives.

44	Saddles:
	This subclass is indented under subclass 43.  Devices comprising seats or saddles for supporting locomotive steam boilers, usually at the front end, and providing for boiler expansion. SEE OR SEARCH THIS CLASS, SUBCLASS: 362, for freight cars having saddles for tanks.

45	Superheaters:
	This subclass is indented under subclass 37.  Apparatus including location, arrangement, and special construction of super-heaters particularly adapted for use on steam locomotives.

46	Firebox arrangement:
	This subclass is indented under subclass 37.  Apparatus relating to fire-box arrangement, shape, and location for locomotives.

47	Articulated pipes:
	This subclass is indented under subclass 37.  Locomotive apparatus relating to movably jointed and flexible pipes for connection between relatively movable parts of locomotives.

48	Control:
	This subclass is indented under subclass 37.  Devices for controlling the operation of a steam locomotive.

48.1	With coal feeding means (e.g., stokers, etc.):
	This subclass is indented under subclass 37.  Devices wherein the locomotive is provided with means to convey solid fuels, such as coal, coke, etc., into the combustion chamber of the locomotive. (1) Note. Examples of the type of structures to be found herein are screw-type conveyer stokers and pusher-type conveyer stokers. SEE OR SEARCH THIS CLASS, SUBCLASS: 232, for coal feed structure on locomotive tenders. SEE OR SEARCH CLASS: 110,  Furnaces,   subclass 105.5 for locomotive type stokers combined with significant furnace structure or means for feeding air or otherwise promoting combustion but not including significant railway vehicle structure. 198,  Conveyors: Power-Driven,   appropriate subclasses, especially subclasses 657 through 677for screw conveyors of general utility. 241,  Solid Material Comminution or Disintegration,   subclass 276 for locomotive-type stokers provided with comminuting means, but not including significant railway vehicle structure.

48.2	And with or convertible to internal combustion engine:
	This subclass is indented under subclass 37.  Locomotive (1) including a second prime mover of the type having a enclosed chamber adapted to be filled with gas wherein the gas is explosively ignited; or (2) wherein the prime mover can utilize steam or explosive gas fuel. (1) Note. The second prime mover may be on a second vehicle attached to that of the first prime mover.

48.3	And/or electric:
	This subclass is indented under subclass 37.  Locomotive including a second prime mover of a type to which electrical energy is supplied as fuel.

49	Electric:
	This subclass is indented under subclass 26.05.  Locomotives having electric-motor devices for their propulsion. (1) Note. Novel features in electric-motor construction are classified here only when their only utility would be on a traveling vehicle. SEE OR SEARCH CLASS: 310,  Electrical Generator or Motor Structure,   appropriate subclasses for electric motor structure, particularly subclass 255 for railway-type stator structures.

50	Battery:
	This subclass is indented under subclass 49.  Electric locomotives which carry primary or storage batteries for the entire or partial supply of electricity to the motors or other car devices. (1) Note. The charging of the storage battery may or may not be effected from line contact. SEE OR SEARCH THIS CLASS, SUBCLASS: 35, and 36, for electric locomotives carrying a prime mover for charging storage batteries.

51	Cell disposal:
	This subclass is indented under subclass 50.  Apparatus relating to holders, automatic circuit-closers, and special location of the battery cells on railway rolling-stock.

52	Double rotor:
	This subclass is indented under subclass 49.  Electric locomotives in which the field and armature of the electric motor both rotate, but in opposite directions.

53	Wheel rotor:
	This subclass is indented under subclass 49.  Electric locomotives in which traction wheel contains the electric motor and the rotor is attached to the tire of the wheel. SEE OR SEARCH CLASS: 310,  Electrical Generator or Motor Structure,   subclass 67 for a rotary motor or generator inbuilt with another unit such as a wheel.

54	Rotor on axle:
	This subclass is indented under subclass 49.  Electric locomotives in which the armature is mounted on the axle, thus effecting a gearless drive for an electric locomotive.

55	Geared:
	This subclass is indented under subclass 54.  The armature or rotor has a reducing-gear connection with the axle.

56	Plane field:
	This subclass is indented under subclass 54.  Electric locomotives in which the field-pieces are arranged at each side of the armature, i.e., the armature revolves in a vertical plane between the two fields.

57	Balanced cylindrical field:
	This subclass is indented under subclass 54.  Electric locomotives in which the field is substantially balanced with respect to the axle and is outside the periphery of the armature.

58	Twin fields:
	This subclass is indented under subclass 54.  Electric locomotives in which the fields have portions in common between two axles, one of which carries an armature.

59	Motor coolers:
	This subclass is indented under subclass 49.  Devices for cooling and ventilating electric motors in locomotives. SEE OR SEARCH CLASS: 310,  Electrical Generator or Motor Structure,   subclass 16 for cooling of a reciprocating electric motor of generator, and subclasses 52 through 65 for cooling of a rotary electric motor or generator.

60	Insulation:
	This subclass is indented under subclass 49.  Electric railway apparatus having a special location and arrangement of insulating material between parts of cars or locomotives.

61	Control:
	This subclass is indented under subclass 49.  Devices for controlling electric locomotives. SEE OR SEARCH CLASS: 318,  Electricity: Motive Power Systems,   subclasses 543 through 557for rheostats in combination with motors. 338,  Electrical Resistors,   subclass 50 for an electrical resistor mounted on wheels wherein the sole purpose of the wheel mounting is to make the resistor mobile, and subclasses 68-201 for mechanically variable electrical resistors, per se.

61.5	Gas turbine:
	This subclass is indented under subclass 26.05.  Locomotive in which the motive power is furnished by a turbine driven by gaseous products of combustion. (1) Note. A device in which the only motive power for driving the locomotive furnished by the turbine is a jet of gas, e.g., turbojet, is not included in this definition. (2) Note. A turbine comprises a rotor driven by the kinetic energy of a fluid, as distinct from a rotor driven by positive displacement due to the action of fluid in an expansible chamber. SEE OR SEARCH THIS CLASS, SUBCLASS: 38, for a steam turbine-driven locomotive. 62, for locomotive power comprising an internal combustion or explosive engine other than a gas turbine. SEE OR SEARCH CLASS: 60,  Power Plants,   appropriate subclasses, especially subclasses 39.01 through 39.83for power plants including gas turbines. 415,  Rotary Kinetic Fluid Motors or Pumps,   appropriate subclasses for a gas turbine, per se.

62.1	Internal combustion engine:
	This subcla