US392740A - Half to isaac h - Google Patents

Description

( No Model.)

J. A. MAROHBANK.

OAR BRAKE.

No. 392,740. Patented Nov. 13. 1888.

Lawn/19.50 e0 fit/6215609;

NMEU Frames rrrcn.

Farnnr JAMES A. MARCHBANK, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE HALF TO ISAAC H. RANDALL, OF SAME PLACE.

CAR BRAKE.

SPECIFICATION forming part of Letters Patent No. 392,7eo, dated November 13, 1888.

Application filed March 5, 1888. Serial No. 266,289.

To 06% whom, it may concern.-

Be it known that I, JAMES A. Mancnnnnn, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Car-Brakes, of which the following is a specification, reference being had to the accompanying drawings.

The object of my invention-which relates to to brakes for cars, especially street-carsis to dispense with the ordinary brake-beam, and to so construct and arrange certain parts of the brake mechanism as to provide for more unoccupied or free space under the car than heretofore, whereby the car may pass over large objects which may happen to be on the railway between the rails, and so that devices conhected with the car and under the car-body may be readily reached for adjust- 2o ment or repairs.

My invention consists in the devices and combinations of devices hereinafter set forth, and specifically pointed out in the claims.

In the drawings, Figure 1 is a plan of so 2 much of a street-car embodying my invention as is necessary for illustration of the same. Fig. 2 is a vertical section taken in the direction of lines 1 in Fig. 1, and Fig. 3 an end View. Fig. 4 shows one of the springs F, and Fig. 5

a pair of rods, E.

The brake-lever A may be centrally pivoted, as at a, in the usual manner, to the common hanger B, supported by the eross'beams C of the frame. Each end of this lever may be 5 connected in the ordinary manner, by means of a rod, b, and chain, with the vertical brakeshaft. At each side of the pivot to and at suitable distance therefrom I pivot 21 connecting piece or link, D, one of these connecting 40 pieces or links extending toward one end and the other toward the other end of the car, as shown. Secured to the outer end of each of these connecting pieces or links are two rods, E E. I prefer to form each pair of rods E as 5 one piece, and to make a slot, 0, therein where they j oin. Through this slot extends the connecting piece or link D,which has a screwthread cut thereon to receive two nuts, (2 and (No model.)

6, one on each side of the piece formed by the rods E.

The outer end of each of the rods E is joined to a brake-shoe, preferably by being pivoted thereto, as at f. The brake-shoe may be suspended to swing freely by a link, 9, in the usual manner.

There is a spring, F, for each pair of brakeshoes and rods, which I prefer to form of sheet metal, bent as shown and fastened at the upper end to a cross-beam, C. It has a slot, h, through which the connecting piece or link D extends. By pressing against the nut d, and hence against the united inner ends of the rods E, the spring acts to carry the brakeshoes G away from the wheels.

All the brake-shoes are caused to press against the wheels by a pull on either of the rods bin the usual manner. The vertical slot h in each spring F permits any necessary vertical movement of the link D and rods E. The slot 0 permitsthe rods E to swing or have such lateral movement that each pair of brakeshoes will be caused to press with equal force against their Wheels. A brace, 13, between the rods E, forming a pair, may be employed, if desired, as shown in Fig. 5.

By means of my mechanism not only is the ordinary brake-beam dispensed with, but the necessary devices for supporting and operating the brakeshoes may be oflight weight and disposed so that there is much more free space under the car than heretofore for the purposes hereinbeforc stated, while the brake-shoes may be easily operated and will bear evenly on the wheels.

I claim as my invention-- 1. In a car-brake, the combination of a brake-lever, A, a connecting piece or link, D, pivoted to said lever, and two rods, E E, to the outer end of each of which is pivoted a brake-shoe, substantially as set forth.

2. In a car -brake, the combination of a brake-lever, two rods connected at their outer ends to two brake-shoes and joined at their inner ends to form one piece, a connecting piece or link pivoted at one end to said lever and connected at the other end to said rods,

as by means of a slot, 0, and nuts (1 and 0, I between said rods and lever, and a spring, whereby a lateral or swinging movement of F, substantially as and for the purposes set the rods is permitted, substantially as and for I forth. the purposes set forth. I JAMES A., MAROHBANK.

3. The combination of a brake-lever, A, "Witnesses: two rods, E E, having brake-shoes connected I W. E. WOODWARD, therewith, a connecting piece or link, D, EDW. DUMMER.

Images