USRE7551E - Improvement in bumpers and draw-bars for railroad-cars - Google Patents

Description

A. MIDDLETON, J'r.

BUMPER AND DRAW-BAR FOR RAILROAD-CARS. 7,551.

7 P 8 1 6 h C r a d e u S S .1 8 R rIIlIIlII/Illllll UNITED STATES" PATENT- OFFICE,

ALLEN MIDDLETON, JR., or PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN BUMPERS- AN'D DRAW-BARS FOR RAILROAD-CARS.

L Specificationforming part of Letters Patent No. 142,492, dated September 2, 1873; reissue No. 1,551;

March 6, 1877; application filed February 16, 1877.

To all whom it may. concern 'Be it known that I ALLEN MIDDLETON, Jr., of-Philadelphia, Pennsylvania, have invented a Combined Bumperand Draw-Bar ,i for Railroadfiars, of which the following is a specification The object of my invention is to obviate the severe strains to which railroad-cars are subjected on starting trains; and this object I attain by means of a rod, A, or its equivalent,

co'nnectedto bumper and draw-head s B'at both ends of the car, and-passing through and operating in conjunction with springs D D, substantially as shown-in the inverted plan view in the accompanying drawing, so that,

in starting the train, the pulling-three at one end of the car will be exerted, through the medium of the spring,-at the opposite end of the car, and will be transmitted through the The rodA extends from one spring to the other. and passes through both springs, and has at each extreme end a head, d, contained within the adjoining draw-and bumper head B, so that the latter,'when pulled outward, will draw the bar in the same direction, but, when pushed inward, will slide independently of the said ban Y Supposing the bumper-head B, at the end of the car to the right, to be drawn in the direction of the arrow, the rod A must necessarily follow, and this it will do without act ing upon the spring D it will, however,pull the bumper-head at the opposite end of the car-against the plate I) of the spring D, the I elasticity of which will lessen the shock, but the further pulling-force exerted, by the rod inwardly aunepende y to draw the car forward inthe directionof the arrow will be transmitted through the en-' tire frame work of the car from the spring D outward; hence the frame cannot be. subjected to the severe strains which, with the usual connections, it will experience on starting a train. Whenthe car is drawn in a direction opposite to that pointed out by the arrow the pull will take pla'ce'from the spring D, and

'when two cars meet the bumper-heads will be forced against the plates b of the springs, and the latter, consequently, diminish the shocks,

' It is essential in carrying out my invention that the draw-barshould pass .through the springs, so that there may be a moredirect pull against the springs-than when two bars, one on each-side of the spring, are used, and so that simplicityot' construction and connection of the bar tonthe bumper-headssmay be insured.

'It will be noticed that the draw-bar is slotted at onepoint; and bent at another, to escape the king-bolts; either of these plans may be adopted. V

'I claim as my invention- 1. The combination, in-saiimii-reedsmr, of springs D D,'a draw-bar, A,:passingfthirough the said springs and bumper-heads B B, one

of which is connectgai to each end of the said bagsubstaiitieillgdissizribed; so as to slide ,ofitlieisame, but out \vard'ly with. the said. bar, asset forth 2. The com hinatiou of the spring-boxes DD, bumper-heads B B, and the draw-bar A, passingthrongh the said springs and through the movable and fixedvplates b b, and having heads d, adapted to the bumper-heads, all substantially, as "and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing-witnesses.

, -ALLEN MIDDLETON, JR. Witnesses:

HERMANN Monssnnn, HUBERT Howson,

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