US321428A

US321428A - Car-brake

Info

Publication number: US321428A
Authority: US
Publication date: 1885-07-07
Anticipated expiration: 1902-07-07

Description

170.621.4253. Patented July 7, 1885.

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UNITED STATES PATENT FFlCE.

SlMOh FAIRMAN, OF BALTIMORE, MARYLAND.

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SSEECIFICATION forming part of Letters Patent No. 321,428, dated July 7, 1885.

Application filed January 26, 1885. (No model.)

To all whmn it may concern.-

Be it known that I, SIMON FAIRMAN, a citizen of the United States, residing in Baltimore city, in the State of Maryland, have invented a new and useful Improvement in GauBrakes, of which the following is a specification.

My invention relates to car-brakes for steamrailways, and is so constructed as to be automatic in its action, all the cars in a train being under the control of the engineer in charge of the locomotive. I attain this object by the mechanism illustrated in the accompanying drawings, in which Figure l is a side view of certain parts of a car having the various parts of my invention displayed in their proper places; Fig. 2, a side view of one of the truck-sills. Fig. 3 is a face view of a revolving disk with ratchetteeth and pawls. Fig. 4 is a side and edge view of a lever with its lower end forked. Fig. 5 is a longitudinal view of a car-axle with cam attached. Fig. 6 is an edge view of an oscillating arm.

Letter b, Figs. 1 and 2, is one of the trucksills, to which is attached the loop (1. This loop is semicircular, the king-bolt being the center of the circle.

Letter Z, Figs. 3 and 1, is a revolving disk having ratchet-teeth on its upper face. It also has asheave of small diameter. (indicated by letter a, Fig. 1.) To this sheave is fastened the brake-chain 0.

Fig. 4 is a side and edge view of a lever, which has its fulcrum securely fastened to the truck-sill a. As seen in Fig. 1, its upper end is slit-ted, as represented by letter if. The lower end is forked, having a pin in each fork, (indicated by letter a.)

Letter 71, Fig. 5, is a cam, which is attached to the inner axle of the truck.

Fig. 6 is an oscillating arm, having the kingbolt for its center of motion, and is represented by letter 9 in Fig. 1. The pawl c, Fig. 1, is pivoted to the front end of this arm, and its opposite end extends to the inner axle, and there engages the cam h and receives from it the oscillating motion which gives to the pawl e the same movement, and the pawl engaging the ratchet-teeth of the disk gives it a revolving motion and winds the brake-chain 0 around the sheave n, which gives eifect to the brakes.

Letter 1), Fig. 1, is a hand-lever having the pin r. This pin is long enough to engage a similar lever attached to the next car, and when moved gives to it a turn in the same direction with like effect. This lever 12 is firmly attached to the actuating-bar is, which is properly fastened to the bottom of the car. It extends through the entire length of the car. To this actuating-bar is also fastened the coupler s at a point nearly perpendicular over the loop (I, Fig. 1. Its jaws inclose the upper end of the lever 1', and has free action in the slit it, so that when the handlever p is moved to the right or left it imparts a similar movement to the lever i. The pins 2:, impinging on the loop d, press it hard upon the free end of the pa'wls f and e, and disengage them from the teeth of the disk and allow it to take a reverse movement, which unwinds the chain 0 from the sheave a, and thus relieves the brakes from operation. The opposite end of the chain 0 is attached to the usual means used for braking purposes on steam-rail ways, which I do not broadly claim.

It may here be remarked that the free end of pawl 6 stands a little higher than that of pawl f, and by the pressure of the loop 03 thereon it is first disengaged from the disk-teeth,while pawl f still holds its grip and keeps the disk in its position. When desirable to relieve pawlf, a further depression of the hand-lever accomplishes it.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a car-brake for steam-railways, the actuating-bar 7r,in combination with the handlever 12 and the coupler s, substantially as and for the purposes set forth.

2. The combination of the coupler s, the forked lever l, and the loop (2, substantially as and for the purposes set forth.

3. The combination of the ratchet-disk Z and its sheave a, the oscillating arm and the cam 71, all substantially as and for the purposes set forth.

SIMON FAIRMAN.

Witnesses:

R. M. J. HARKER, Isaac N. DIOKSON.