US276936A

US276936A - Dolphus tobrey

Info

Publication number: US276936A
Authority: US
Publication date: 1883-05-01
Anticipated expiration: 1900-05-01

Description

(No Model.)

' D.TORREY.

GARBRAKB No". 276,936.V 'lmnteaV May 1,1883.

UNITED STATES PATENT OFFICE.

DoLPHUs TORRES?, or New YORK, N. Y.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 276,936, dated May 1, 1883.

\ Application led February 5, 1883. (No model.)

ToA all whom it may concern:

Be itknown that I, DoLPHUs Tonner, a citizen of theUnited States, residing at New York, in theState of New York, have invented an Improvement in Railroad-Brake Apparatus, of which the following is aispecitcatiou.

My invention relates to an improvement in brake apparatusof the class described in my applications for Letters Patent No. 65,5l0, tiled the 29th June, 1882, and No. 65,855, tiled the 3dJuly, 1882, and iso be understood in connection therewith. In those applications I have described the use ot' an adjusting-bar which controls the operating-lever, determiningl its plane of rotation. I have described how, by moving the Yadjustingbar longitudinally, the motor and operating-levers are made to disengage and take reversed positions, and at the same time release the brakes. In those cases a stress is transmittedfrom the brake beams to eiiect this purpose, or else it is effected by stress of thedraw-bar acting through the lneans of lugs upon the levers, which lugs are sloped in excess otf their angle ot' friction. I now present in this application another means ot acting upon the adjusting-bar by draw-bar pressure to disengage the motor and operating levers and permit their reversal in position. i In the accompanying drawings, Figure lis a perspective View of one truck and part of the body-frame of a car with the invention applied. Fig. 2 is a vertical sectional elevation longitudinal to the car, showing the principal working parts.`

To the draw-bar 1 is pivoted a pitman, 2, connectedl to the receiving or motor lever 3, which is thus vibrated in a horizontal plane as the draw-bar moves in and out. The motor lever 3 engages with an operatinglever, 4, through oblique-faced lugs on their opposing faces, so that lever 4 will partakeof the movement of the lever 3 so long as the movement ofthe former is confined to a plane parallel to that in which the motor-lever 3 is guided. To this end the plane of movement of the operating-lever is determined by a guide-bar, 6, having along slot, 9, in which the lever works, and a lock-bar,7,on which the guide-bar rests. The guide-bar and lock-bar are supported in a hanger-frame, 12, having pins occupying obin the otherdirection.

liqne slots 10 in the guide-bar, so that the said bar will be depressed bya longitudinal movement in one direction and elevated when moved This vertical movement of the adjusting guide-bar 6 is permitted by lugs 11 on the lock-bar 7, resting on bearings in the hanger-frame 12, and having oblique orV beveled ends, so that said lock-bar is automatically elevated when moved in one direction and allowed to descend when moved in tbe other direction. The bar is pressed endwise to its upper position by a spring, 15.

'The operating-lever 4 is connected to alooped brake-chain, 22, passing over a pulley, 2l, so that the operating-lever is made to pull on the brakes in whichever way it is moved, pulling the equalizinglever 23 forward. A pivoted lever, 16, is set so thatits lower arm rests against theend of the lock-bar 7, its upper end being held within a notch or keeper in a pivoted latch, 19. The free end of the latch is held by a catch, 20, which is controlled by av magnet, 77, which, when charged, frees the end of the latch ,19, so that it can rise. A pull-cord, 27, is employed to retract the catch 20`when the maghetis not inV use. 18 is a spring attached to the lower arm of the lever 16, and the bent extension of which is in front of and adjoiningtheequalizing-lever23. When the lever 23 is pulled forward by the action of the draw-bar it transmits, through the spring 18, a stress to the lever 16. It at this time the latch19 be freed, the pressure of the end of the lever 16 against the sloped face ot' the notch or keeper in the latch 19 will compel the said latch to rise, and thereby free the lever 16, which, being free to turn on its pivot, allows the stress upon the spring 18 to be transmitted to the lock-bar 7 and will shift its position. This lock-bar, in moving, carries the adjusting-bar 6 with it, and thereby frees the engagement between the motor and operating-levers, letting the brakes off. With the release of the brakes the lever 23 returns to its position, freeing the spring 18, when the counter-spring 15 will reset the ad justin g-bar, lock-bar, and lever 16. By these means it is necessary for the purpose of releasing the brakes and reversing the positions ofthe motor and operating levers to apply only the small force required to actuate the catch 20,

whereby there is given an opportunity for the stress received from the draw-bar to effect the desired transformations in the apparatus, releasing the brakes and reversing the adjustment.

I do not confine myself to the use of the form ot' spring 18, as, by mechanical skill simply, a coiled or other form of spring can be readily substituted. I use, when desirable, a branch chain to connect the chain 22 and the spring 18.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. A double-acting draw-bar brake with a reversing mechanism actuated by stress transmitted from thedraw-barthrough a chain-loop connection, substantially as and for the purposes set forth.

2. A double-acting ,draw-bar brake uit-h a reversing mechanism operated by stress from the draw-bar or vbuffer through the medium of a spring, and a lever governed by a latch or tripping device.

3. In a brake mechanism having an adjusting-bar set in a chord of the are ot' and for controlling the plane of rotation of the operating-lever, the combination of the chain 22, spring 18, lever 16, latch 19, and catch 20, for the purposes set forth.

4. The combination, in an adjusting mechanism in which the actuating mechanism is connected with and is operated by the drawbar, of a receiving mechanism comprising a locked lever, 16, subjected to stress through a spring, 18, and a working mechanism comprising an adjusting-bar, 6, substantially as and for the purposes set forth.

5. The combination of a catch, 20, a keeper or latch, 19, pivoted lever 16, and a spring, 18,

comprising the receiving elements of an adjusting mechanism.

6. The combination ofthe catch 20 a-nd the magnet 77 with the reversing apparatus of' a car-brake, substantially as set forth.

DOLPHUS TORREY.

Witnesses:

(Douvres KNIGHT,

L. M. HOPKINS.