USRE4732E - Improvement in steam-actuated car-brakes - Google Patents

Description

, ,J.T.BASSETT STEAM AGTUATED OAR. BRAKE. V

' No. 4,732. Reissued Feb. 6, 1872.

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UNITED STATES PATENT OFFICE.

JOHN '1. BASSETTfOF GALESBURG, ILLINOIS, ASSIGNOR TO HIMSELF, JOHN BASSLER AND MAROELLUS S. MATTHEWS, OF SAME PLACE.

IMPROVEMENT l-N 'STE-AM-ACTUA'TED CAR-BRAKES.

Specification forming part of vLetters Patent No. 119,913,.dated October 17, 1871 ;-1eissue No. 4,732, dated February 6, 1872 SPECIFICATION. To all whom it may concern:

Be it known that I,-JOHN T; BASSETT, of Galesburg, in the county of Knox and State of Illinois, have invented certain new and useful Improvements in'Steam-Actuated Car- ]lrakes, of which the following is a specification:

My. invention relates to that class of steamactuating car-brakes in which thesteam is carried back to abra-ke-operat-ing cylinder be neath each car, by a pipe from the engine; and also to that class of brakes in which the powerof steam is used to condense atmospheric air, which is led by one or more pipes to brake-operatin g cylinders below the different cars of the train. In actuating brakes of this description, the pressure which sets the brakes, having performed its function, is released by means of an escape at or-near the-engineer supply-tank, and a'counter flow begins from the brake-operatingcylinder which relieves the brakes; .the steam or air being educted through the comlucting-pipe, and not escaping until it reaches the said escape. The object of my invention is to allow the steam or air to'escape before it reaches the engine or supply-tank, in order to relieve the brakes immediately or more'eifeetually; and my invention consists in providing an escape or eduction for that purpose; and ,it'also consists .in an arrangementof valves an d pipes to operate in connection with said educ'tion orjescape, so that the brakes may hc'alternately set and released.

Figural is an end'vicw of a steam or airaetuated-brake apparatus illustrating my in vention; and Fig. 2 is a sectional view of Fig; I, on the plane of the line a: .r.

A is the [make-operating cylinder, constructed in the usual manner, for use with compressed air. .13 is the piston, and G the piston-rod, for transmitting the power of the compressed air in the cylinder A to the carhrakes in the usual manner. 1) is a short pipe, In which the flexible pipe E is attached at one end, the other end being attached to'the main pipe leading from the engine or tank. G G are two short pipes communicating with pipe l) at each end. 11 is an arched pipe, its ends p enlarged to formvalve-chambersh h, which correspond with'and are attached by gasketjoints to the upper ends of the pipe G G. I is a short pipe communicating with and extending from the upper andcentral portion of the arched pipe H to the central portion of the head 'of the .cylinder A. J is an eduction, opening, or escape in the, lower side of the pipe D. I1 is a piston-valve'in the pipe. or 'cylinderD. M is a ball-valve inthe valve: chamber h.

The'operation of m y invention is as follows:'

The compressed air or steam is let on froin the engine or tank, and, passing from the main pipe through the pipe E, enters the end of the pipe D anddrives the piston-valve L back to the position shown bythe dotted lines L, thereby opening the passage to the lower end of the pipe. G, through which the air ascends, and, raising the valve M passes through the pipes H and I into the cy inder A, driving before it the piston B and rod 0, which is connected with the brake-levers,'-and by said movement operates them. The moment that the pressure at the engine or tank is out 011' and the back pressure or flow commences, the valve M will be driven to its seat and the pressure against the rear end of the va ve L will drive it to the right, opening the passage J and allowing the compressed air in the cylinder A to escape by pipesI, H, D, and'J and as the air escapes from saidcylinder A the piston. B will slide back to the position shown in the drawing, thus releasing the brakes on each car, and on the most distant car from the engine almost instantly--a thing impossible in trains of six or eight cars, and wherethe air must pass from the most distant car from the engine back to the engine or .tank and escape before the bralges are released; The gasket-joints between .the valve-chambers h and h and the pipes G andGf may .be loosened; and, by turning the pipe D end for end and. again attaching said gasketjoints, the air may be received from the opposite direction from that shown in the drawing; e

Havingthus described the nature and object of my invention, what I claim as new, and desire, to secure by Letters Patent, is-

1'; Tlte eehibine-tion of 115 eductieil J; wieh 1 the brakeeoperating' cylinder of s'tenmvor an actuated ear-h'm-kes, am1 so arrangedas to anew the escape of the steam or air from each eylinder, and thereby release the brakes, without eomlneting the en ine for esczme. suhstantiallv as set forth.

2. The echmtion er escape J, in eon'lbi'uetion with the pipes 1), G, H, and. I, andvalves L and M, for the purpose of allowing the steam or air to escape from each cylinder ofstemn or air-actuated car-brakes, substantially as set fmfl-x.

steam or air back to the e 3. The val'i'e devices I) G H L M, when m tGIPOSG-d. between and arranged to operate with the brake-cylinder A B and pipe E, for the purpose speeified.

4. The combination of pipes 1), G, H, and I and valves L M with the brake-cylinder A B and eduetien or escape J. substantially as and for the purpose specified.

1 JOHN T. BASSETT..

Witnesses:

M. D. Gooxn, ADAM EASON.

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