US94530A - Improved railway-car brake - Google Patents

Description

I. WALKER.

Railway Oar Brake. No. 94,530. Patented Sept. 7,1869.

N, PETERS, PHOTO-UTHOGRAPHER, WASHINGTON D C.

tinned swat patent Gtfljiirr.

INGLIS WALKER, OF LYNN, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND WILLIAM R. BARNARD, OF SAME'PLACE.

Letters Patent No. 94,530, dated September], 1869.

The Schedule referreglto in these Letters Patent and makingpart of the same.

To whom it may concern Be itknown that I, Inems WALKER, of Lynn,

county of Essex, and State of Massachusetts, have invented a new and improved Gar-Brake; and do hereby declare th following to be a full, clear, and exact description ereof, reference being bad to the accompanying drawings, in which'- Figure l is a side elevation of a platform-car, with my improvements.

Figure 2 is a bottom plan view of a platform-oar, with my improvements.

The object of my invention is to produce means by which cars can be stopped, by the brakes being set,

without the employment of brakemen; and

The nature of my invention consists in devices for setting the brakes by the reverse action of the engine, thus making 'the whole train controlled by the engineer. This is accomplished by the check-movement of the engine. acting as a partiaicheck to the cars, which causes all the cars to run close together,

and this movement furnishes the power for automati- H is a drum on shaft R, which is perpendicular to the bar D.

Over drum H and on the shaft R is cogged wheel h.

The drum H is loose on the shaft.

Below drum H is toothed gear 9. This gear is at tached to and a part of the drum H.

o is a toothed gear, fast on the lower endof shaft R.

S is a cord, running under and ,back of pulley t, and operates to raise drum H, thus disengaging the teeth of gear g from teeth of gear 0, which allows ofthe shaft R turning without turning drum H.

m m and 7c are rods orvchains,'which, in connection with levers 'n and '5, form the usual devices for setting brake-shoes.

The bar D projects, at one end of the car, beyond 7 the draw-head b of the coupling.

Now, what is the operation of my improvements, which consists in the means for furnishing power to set the brakes automatically? I The train being in motion, and it being desirable to stop, the engine is reversed; this action causes the cars to bump together, the bar D striking against a bumper on the preceding'car; the teeth of gear g are engaged with toothed gear 0; the bar D is pushed back, the cogs a being engaged with cogged wheel I turning shaft R, and with it drum H; this movement winds up chain m, operates levers n and t, by assistance of rods or chains 70 and m, and sets the brakeshoes 0 c and c c,- the brakes remain set till the train stops, and as long as the cars are up close together, but'as soon as the cars are started, or the pressure removed from bar I), the brakes are thrown off, and the action of spring E throws bar 1) back to its former position.

If it is desirable to back. the train, it can be done without setting the brakes, by the engineer drawing cord S, which extends the length of the train, from rear. car to engineer, and disengaging gear 9 from gear 0, thus the bar D may be pushed back without turning shaft It and drum H. This cordScan be operated from either end of the train, as it is oftendesiredto attach the engine to either end of the train;.

one leading cord is used, with othe s running to wheel t and drum H, on each car of the train.

By the means described a train can be stopped very quickly, without the aid of a corps of brakemen, the train being under the complete controlof the engineer at all times, and the benefits arising from having a train under the immediate control of the engineer, are too apparent to require comment.

What I claim as my invention, and desire to secure by Letters Patent, is r l. The bar D, in combination with shaft It, having -drumH, toothedgears g and o, and wheel h, and spring E, as means for setting the brakes of a car, op-

erating substantially as set forth- 2. The combination of the above devices with cord S, pulley t, and the brakes of a 'car, substantially as described. I

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

Witnesses: INGLIS WALKER.

CARROLL D. WRIGHT, Aus'rm S. Howanrn.

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