USRE11145E - bayley - Google Patents

Description

2 SheetsSheet 1.

AIR BRAKE.

Relssued Feb. 17, 1891.

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2 SheetsSheet '2. R. W. BAYLEY.

Assignor to the WESTINGHOUSE AIR BRAKE COMPANY.

UNITED STATES P TENT OFFICE.

RICHARD 1V. BAYLEY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE ESTING-HOUSE AIR BRAKE COMPANY, OF SAME PLACE.

AI R- B RA K E.

SPECIFICATION forming part of Reissued Letters Patent No. 11,145, dated February 1'7, 1891. Original Nu. 412,6 95, dated October 8, 1889- Application for reissue filed January 13, 1891. Serial No. 377,677.

To all whom it 77mg concern: hopper-bottom, the ordinary construction of Be it known that I, RICHARD W. BAYLEY, air-brake equipment would be wholly inapa citizen of the United States, residing at plicable, so that hand-brakes only have here- Pittsburg, in the county of Allegheny and tofore been employed upon these and other 5 State of Pennsylvania, haveinvented or discars of the same general type.

covered a certain new and useful Improve- In the practice of my invention I secure ment in Air-Brake Apparatus for Cars, of upon the frame 1 of the car, adjacent to each which improvement the following is a spcciof its ends and between the top of one of the ficatiou. 1 trucks 2 and the inclined end portion of the IO The object of my invention is to provide an hopper-bottom 3, a brake-cylinder 4, provided automatic air-brake apparatus or equipment with a piston, to which a piston-rod 5 is conwhich will be conveniently and desirably apnected in the usual manner. Adjacent to plicable to railroadcars, the construction of one of the brake-cylinders at an auxiliary resthe framing and body of which is such as to ervoir (5 and triple valve 7 are secured upon 15 render impracticable or inconvenient the the car-frame, air under pressure being supmechanism ordinarily heretofore employed. plied to the auxiliary reservoir through the To this end my invention, generally stated, triple valve from a main air or brake pipe 8, consists in the combination of a brake-cylinwhich extends longitudinally below the frame der fixed to a car-body above and adjacent and is connected by a pipe 9 with the triple 20 to one of its trucks, a brake-cylinder lever valve, being likewise provided with the ordicoupled to the car-body above the cylinder, nary end couplings 1.0 and valves 11 for conand to thepiston of said cylinder, a main airnection to the brake-pipes of the adjoining pipe, an auxiliary reservoir, and a triple valve cars of a train and for closing either of its and draft connections coupling the brakeends, respectively. The triple valve is con- 25 cylinder lever to a brake-lever of the adjanected by pipes 12 with each of the brakecent truck; also, in the combination of two cylinders 1, so as to effect the supply or exbrake-cylinders, the pistons of which, respecthaust of air, respectively, to or from both the ively, actuate the brakes of separate trucks, brake-cylinders simultaneously. and a single auxiliary reservoir and triple The triple valve'and auxiliary reservoir 0 valve connected with a main air-pipe an d with are similar to those heretofore employed, the each of said brake-cylinders. construction and operation of which, being The improvement claimed is hereinafter well known in the art and not forming part fully set forth. of my present invention, need not be herein In the accompanying drawings, Figure 1 is described. 5 a view, partly in elevation and partlyin lon- The pressure by which the application of gitudinal central section, of a drop-bottom the brakes is effected is transmitted to the gondola-car, illustrating an application of my brake-beams and connected brake-shoes of invention; Fig. 2, a plan or top view of the each of the trucks 2 of the car from the piscar-frame and brake apparatus; Fig. 3, a View ton of the brake-cylinder 4, which is located 40 in' elevation of one of the brake-levers deadjacent thereto througha brake-cylinder letached; Fig. 4, a partial longitudinal central ver 13, which is pivoted at its upper end to a section of a similar car; Fig. 5, a partial plan part of the car-body, (in this instance the of the frame and brake apparatus, illustrathopper-bottom 3,) and is coupled at its lower ing a modification in the details of the brakeend by a link 14 to the chain 15 01. the hand- 45 lever connections; and Figs. 6 and 7 similar brake staff 16 and to a chain or pull-rod con views illustrating a further modification in nected to the brake-levers of the trucks, as the same. presently to be described, the piston-rod 5 of My invention is herein illustrated as apthe brake-cylinder 4E being coupled to the, le plied to a drop-bottom gondola-car-a type ver 13 between its upper and lower ends. 50 which is now extensively in use, and in which, Under the above construction it will be seen by reason of the downward projection of the that by the outward movement of the brakecylinder piston-rods 5, under pressure admitted to the cylinders from the auxiliary reservoir by the triple valve, upon a reduction of pressure in the brake-pipe the brakes are simultaneously set or applied upon both trucks of the car, and are coincidently released by the inward movement of the piston-rods upon the restoration of pressure in the brake-pipe.

The brake-cylinder levers 13 and links 14 may be connected to the brake- levers 17 and 18, either by means of chains 22 or by pullrods 24:, forming extensions of the link 1%, the former connection being exemplified in Figs. 1 to 5 and the latter in Figs. 6 and 7, and modificationsin the details of suspension and connection of the brake-levers may also be made, in the discretion of the constructor, without departure from the essential features of my invention.

As illustrated in Figs. 1 and 2, the link 14 of each of the brake-cylinder levers 13 is coupled by a chain 22, passing around a guideroller or sheave 23, journaled in the upper end of one of the'brake-levers 17 of the adjacent truck 2 to the upper end of the opposite brake-lever 18 of said truck. The brakelevers 17 and 18 are pivoted at their lower ends to brake-beams 20, carrying brake-heads provided with proper brake-shoes 21, and are pivoted above their lower ends to bearings 19, fixed upon the framing of the truck, draft upon the chains 22 thus acting to apply the brake-shoes to the wheels. The lengths of the lever-arms of the respective brake-levers should of course be properly proportioned to obtain equal brake-shoe pressure upon the two brake-beams.

In the modification shown in Figs. 4 and 5 the draft of the brake-cylinder levers 13 and chains 22 connected thereto is similarly transmitted to the brake- levers 17 and 18 of each truck; but the brake-levers, instead of being pivoted to bearings on the truck-framing, as in the former instance, are coupled one to the other in each truck between their power and resistance ends by a connecting-link 25, the pivots of which act as their fulcrums, thus constituting, as before, a lever system of the first order.

A further modification of detail is shown in Figs. 6 and 7, the brake-cylinder levers 13 being in this case coupled to the upper ends of the outer or live brake-levers 18 of the trucks by links or pull-rods 24, which form part of the links 14, by which the levers 13 are connected to the handbrake-staff chains 15, the sheaves 23 being here dispensed with. The upper ends of the inner or dead levers 17 of the trucks are pivoted to guides 27 on the truck-framing, and the live and dead levers are coupled at their lower ends by links 26,

forming lever systems of the second order, to which power is directly transmitted from the brake-cylinder le' -s 13 through the pullrods 24.

Myimprovementis applicable,without substantial variation of its structural and opera-,

tive principles, to railroad-cars of other constructions,in which, as in the instance shown, the form and relation of the car-body and running-gear are such as to preclude the adaptation of existing systems of air-brake mechanism, the minor changes of detail which may be required being within the ordinary skill of a competent constructor and not involving a departure from the essential features of my invention.

I claim as my invention and desire to secure by Letters Patent- 74 1. The combination of a brake-cylinder fixed to a car-body above and adjacent to one of its trucks, a main air or brake pipe, an auxiliary reservoir and a triple valve connected with the brake-pipe and brake-cylinder, a brake-cylinder lever coupled to the carbody above the brake-cylinder and to the piston-rod of said cylinder, and-draft-connections coupling the free end of thebrake-cylinder lever to a brake-lever of the adjoining truck, substantially as set forth.

2. The combination of two brake-cylinders, each fixed to a car-body above and adjacent to one of its trucks, a main air or brake pipe, an auxiliary reservoir and triple valve connected with the brake-pipe and with each of the brake-cylinders, two brake-cylinder levers, each coupled to the car-body above one of the brakecylinders and to the piston-rod of said cylinder, and draft-connections.coupling the free ends of the brake-cylinder levers to the brake-levers of the adjoining truck, substantially as set'forth.

3. The combination of two brake-cylinders, each fixed to a car-body above and adjacent to one of its trucks, a main air or brake pipe, an auxiliary reservoir and triple valve connected with the brake-pipe and with each of the brake-cylinders, two brake-cylinder levers, each coupled to the car-body above one of the brake-cylinders and to the piston-rod of said cylinder, and chains, each connecting the lower end of one of the brake-cylinder levers to one of the brake-levers of the adjacent truck and passing around a guide on the opposite brake-lever of said truck, substantially as set forth.

In testimony whereof I have hereunto set my hand.

RICHARD \V. BAYLEY.

Witnesses:

GEO. L. WEBB, EDWIN E. LITTLE.

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