US404373A - Car-brake - Google Patents

Description

(No Model.)

W. L. ABBOTT & v. 0. KILLIN.

" GAB. BRAKE.

Patented June 4, 1889.

WITNESSEE:

UNITED STATES PATENT OFFICE.

\VILLIAM L. ABBOTT AND VIRGIL C. KILLIN, OF CHICAGO, ILLINOIS.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 404,373, dated June 4, 1889. Application filed December 24, 1288. Serial No. 294,529. (No model.)

To (all whom it may concern:

Be it known that we, WILLIAM L. ABBOTT and VIRGIL C. KILLIN, citizens of the United States, residing at Chicago, Illinois, have invented a new and useful Improvement in Car- Brakes, of which the following is a specification.

Our invention relates to devices for setting the brakes on cars, particularly such as are used on tramways, and has for its object to provide convenient and simple means therefor.

Our invention is illustrated in the accompanying drawing, wherein is shown in the figure a plan view of the running-gear of a passenger-car and grip-car such as are used on cable roads, unessential parts being omitted.

A A are the axles of the passenger-car; B B, the wheels; 0, the frame; D D, cross-pieces carrying the brake-shoes E E.

F is a centrally-pivoted brake-bar, connected by the links F F from opposite sides of its pivotal point to the cross-pieces D D.

F F are rods or chains, or both in combination, passing from the extremities of the brake-bar F to the opposite ends of the cars, where they may be attached to ordinary brake-setting devices, and this is not shown fully, as it is no part of our invention.

H is a portion of a system of chains which is composed of short or long links, as may be desired, it being shown in the drawing as composed partly of chain proper and partly of longer rods, and it is connected to the brake-bar F on opposite sides of its pivotal point. It also passes about the pulleys J J, which are adapted to slide along the guides K K. To each of these pulleys is secured the chain L, which, together with the chain H, constitutes what we have denominated a sys tem of chains.

M M are the wheels of the grip-car on the axles N N.

O O are the cross-pieces bearing the shoes P P. 011 the axle N is the fixed collar R and also the disk-shaped fixed collar R, also the friction plate or piece R having the drum R to which is secured the chain R and also the friction-plate proper R shaped like the frustum of a cone. R is another sliding collar;

and to the sliding collars R and R are pivoted the toggle-bars R These latter are pivoted together and to the rod R at the point B. The chain R passes over the pulley S, from which leads the chain S, and the chain R terminates in the long link or rod S which is secured to the pivoted brake-bar S and this rod is secured at its opposite ends, respectively, to one cross piece 0 at the point S and to the other at the point S by means of the link or rod S S is a vertical lever, to which the rod R is secured.

The use and operation of our invention are as follows: The system of chains of each car is coupled or hooked to that of the next, and thus the entire train of cars is brought into connection. If now power be applied to the chain systems from any direction or at either end of either car, the power communicated through the chain will have the effect of moving each of the pulleys. This, as is readily seen, will take up the slack in the system of chains for the car and will rotate the pivoted brake-bar on its pivot, and thus set the brakes. It is clear that the arrangement of these pulleys may be greatly varied and that they might be brought nearer to or farther from the pivoted brake-bar, and that they might even be attached to the ends of such pivoted bar, in which case the system of chains would become one continuous chain passing from the one end of the car to the other and about the pulleys. The apparatus on the grip-car is easily applied by moving the rod which is pivoted to the toggle-bars so as to spread them, thus locking the movable collars or friction-plates against the fixed collars or plates, and thus winding the chain of the grip-car on the drum upon such movable collar. In this manner power is applied throughout the system of chains. Upon the last car the end of the system of chains should be anchored or hooked to the car. The chain system on the grip-car in the device shown passes back to a pivoted lever, which, as above described, when rotated on its pivot, moves the cross-pieces and sets the brakes. In this manner it is seen that when the chain systems are operated all the brakes on all the cars are simultaneously set. i

\Ve cl aim as new and desire to secure by Letters Patent 1. The combination of two fixed collars with the axle of a car, movable friction-plates between them, toggle-bars connected with such friction-plates, and a brake-chain secured to such friction-plate, so that by operating the toggle-bars the friction-plate is locked against the fixed collar and the chain is wound up to set the brakes.

2. The combination of a car with a pivoted brake-lever and connections therefrom to the shoes, pulleys at the opposite ends of the ears supported so as to move along the length of the car, chains therefrom connecting the systoms of contiguous cars, and a system of chains and rods extending from one end of such lever over both pulleys to the opposite end of the lever.

The combination of a car with a pivoted brake-lever and connections therefrom to the shoes, pulleys and sliding frames therefor on opposite ends of the ears and near the middle of the ends of such ear, said frames adapted to slide along the length of the ear, chains connecting the pulleys of adjacent cars, and

a system of chains and rods extending from one end of such pivoted lever over both pulleys to the opposite end of such lever.

4. The combination of two fixed collars with the axle of a car, a movable friction-plate be tween. them, toggle-bars connected with such friction-plate and to another point along the axle, and a brake-chain secured to such movable frictioirplate, said friction-plate shaped so as to serve as a drum, substantially as and for the purpose set forth.

5. The combination of a fixed collar or friction-plate with the axle of a car, a movable collar or frietionplate thereon and formed like a drum, toggle-bars secured at one point to the axle and at another to the movable friction-plate, so that by operating the toggle bars the movable and fixed friction plates or collars are locked together, and a chain secured to the drum so as to be wound thereon to set the brakes.

WILLIAM L. ABBOTT.

VIRGIL C. KI'LLIN.

\Vitnesses;

CELus'ric P. CHAPIVIAN,

JoHN R. N'E'LTENSTROM,

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