US229041A - Car brake and starter - Google Patents

Description

A. BQHOAD EY. Oar Brake and Starter.

.No. 229,041. Patented June 22,1880;

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iron, with the smallest radius about seven PATENT OFF CE.

.ALBERT E. HOADLEY, OF CHICAGO, ILLINOIS.

CAR BRAKE AND STARTER.

SPECIFICATION forming part of Letters Patent No. 229,041, dated June 224, 1880,

Application filed May 3, 1880. (No model.)

To all whom it may concern:

Be it known that I, ALBERT E. HOADLEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Gombined Brake and (Jar-Starter, of which the following is a specification.

The invention is designed principally for street railway-cars propelled by horse-power, and relates to stopping and starting the same.

The object of my invention is to raise the Whole body of the car from the trucks by force of the momentum of the car when stopped, and to start the car by letting it fall, so as to turn the axles.

The invention consists of a combination of levers, toggle joints, and eccentric frictionwheels working against the inside of the carwheels, by which the momentum of the car is used as a force to raise the body of the car from the trucks; and also of a combination of curved arms, dogs, rods, and double ratchetwheels, by which the weight of the car is thrown upon points on the periphery of the axles, thus turning them and starting the car.

Figure l is a view of one of the frictionwheels and theinside of one of the car-wheels. Fig. 2 is a view of one of the ratchet-wheels with the arms, dogs, and rods attached. Fig. 3 is an end view, showing-a car-wheel, friction- Wheel, and ratchet-wheel. Fig. 4, is a view of the car below the bed.

Similar letters refer to similar parts throughout the several views.

The mode of operation is as follows: The iron rods H H (see Fig. 4) are attached by a short chain to upright bars, one at each end of the car, (not shown,) in the manner the brakes in common use are attached, only one, of course, being in use at the same time.

When it is desired to stop the car the driver, by turning the brake-crank, draws either rod H, attached to the lever G, suspended beneath the car, (see Fig. 4,) which draws the rods F F, attached to the toggle-joint levers D D, which press the eccentric friction-wheels G 0 against the disks B B on the inside of the carwheels A A.

The eccentric friction-wheels are made of inches and a half and the largest about eleven inches and a half, (see Fig. 1,) attached, as shown, by a hub of collar, L, to the togglejoint levers D D, respectively, so that the wheels can revolve loosely on the axles. (See also Fig. 3.)

While the car is in motion the toggle-joint levers D D are drawn back to the position shown in Fig. 4 by the springs M M, attached to cross-beams in the bottom of the car, and to the toggle-joints uniting the levers D D, respectively, and constructed as shown in Fig. 1. The eccentric friction-wheels O O hang in the position shown in Figs. 1 and 3 by their own Weight, (they being loose on the axles of the car.) When pressed against the disks B B by the driver turning the brake-crank, as heretofore shown, the friction against the disks causes the eccentric wheels to revolve.

Directly over each of the eccentric wheels, in the beams of the car, loose pulleys 0, Fig. 1, are set in rubber, which, as the former revolve, roll on their peripheries, and as the largest radii approach the pulleys gradually raise the body of the car from the trucks, (the boxes being set in slots, so as to permit its rising.) When the longest radius reaches the pulley the lugs P (see Fig. 1) on the periphery of the eccentric Wheels 0 O strike the pulley and hold the wheels in that position. The friction-wheel must then either slip on the disk of the car-wheel or the car-wheel slide on the track until the car stops, depending on the amount of force exerted by the driver.

It may be found necessary to corrugate the surfaces of the disks and friction-wheels with concentric rings on heavy cars in order to increase the friction between them.

When it is desired to start the car the brake is released and the togglejoint levers are drawn back by the springs M M, attached thereto, to the position shown in Fig. 4., allowing the eccentric wheels to roll back to the position shown in Figs; 1 and 3.

Inside of the eccentric friction-wheels, on the axles I I, are the four double ratchetwheels K K, (see Figs. 4. and 2,) the ratchets in one half the width of each wheel being set in an opposite direction from the other half. Over each ratchet-wheel, from a beam of the car, curved arms R R extend down and partially around each ratchet-wheel. (See Fig. 2.) At the extremity of each of these arms are dogs S S, attached by bolts to the arms, in which the bolts move freely, allowing the dogs to rise or fall upon the ratchetwheels K K, the dogs falling upon opposite sides of the width of the wheel, as shown in Fig. 4.. The bolts pass through the arms on the side nearest the eccentric wheels, and are fastened to cranks T T, which are fastened with loose joints to the iron rods V V, which are also attached by loose joints to the U- shaped rods W W, (see Fig. 4,) one extremity of each of the rods W W being attached to the rods V V, respectively, and fastened at the middle with hinges X X to the bottom of the car, (see Fig. 4,) the other extremities ending on the face of. the eccentric wheel and hanging loosely. (See Figs. 1 and 3.)

On the faces of the eccentric wheels are knobs or projections Y, Figs. 1 and 3, which,

as the wheel turns by the action of the driverstopping the car, strike the rod W, raisingit, which raises the opposite end and the rod V, and thus throws the dog S over upon the ratchet-wheel K. (See Fig. 2.)

When the brake is loosened and the friction-wheels drawn back, as heretofore shown, by the springs M M, Figs. 4t and 1, the weight of the car is thrown upon the dogs, which, as the body of the car falls to its usual restingplace upon the trucks, turn the ratchet-wheels and the axles, thus starting the car.

The dotted lines above the ratchet-wheel in Fig. 2 show the position of the ratchet-wheel in relation to the arms when the body of the 3 5 car rests in its usual position upon the trucks and while in motion.

When the car is going in the opposite direction the eccentric friction-wheel, in turning, strikes the rod W, which throws the dog S upon the other half of thewidth of the ratchet wheel K, (the ratchets being set in the opposite direction,) thus propelling the car in the direction desired.

Fig. 4 shows the dogs S lying on the ratchetwheels, in the position of the dog S in Fig. 2, so as to start the car toward the right, the dogs S S in Fig. 4 standing up in the position of the dog S in Fig. 2.

What I claim is 1. The toggle-joint levers D D, attached to the eccentric friction-Wheels O O, for the purpose specified, substantially as set forth.

2. The eccentric friction-wheels O G, loose on the axles and working against the inside 55 of the car-wheels, for the purpose specified, substantially as shown.

3. The combination of the double.ratchetwheels K K With the arms R R, and dogs S S, androds V V and W W, for the purpose 6o specified, substantially as described.

ALBERT E. HOADLEY.

Witnesses:

NATHANIEL BACON, HENRY M. MATTHEWS.

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