US149586A - Improvement in car-starters - Google Patents

Description

UNTTED STATES PATENT OFFICE.

DAVID JEWETT, OF LYNN, MASSACHUSETTS, ASSIGNOR OF ONE-FOURTH HIS RIGHT TO HENRY E. FITZ, OF SAME PLACE.

IMPROVEMENT IN cAR-sTARTERs. f

Specilieation forming part of Letters Patent No. 149,586, dated April 14, 1874 application filed March `l1, 1874. i

companying drawing, forming a part of this specification, in which- Figure 1 is a vertical longitudinal section; Fig. 2- a plan, and Fig. 3 a detail, to be referred to.

Like letters refer to like parts in the different gures of the drawing.

My invention relates more especially to horseears, and consists in a novel construction and arrangement of the parts, as hereinafter more fully set forth and claimed, by which a great saving in time and power is eifected in start! ing and stopping cars of this description.

The extreme simplicity of my invention renders an elaborate description unnecessary.

In Fig. 1, A is the frame-work or platform of the car; B, the tongue; C, the escapement incline; D, the sheave-holder; M, the sheave;

E, the brake-lever; J, the brake=arm pivoted at U in the stud T, projecting from the frame A, and provided with the block S. The wheels l? are mounted on the axle K in the usual manner, the axle being serrated at L, and provided with the clampinglevers F B, pivoted to form a tongs, which grasps the axle in its jaws, when the long arms of the levers are acted upon, as hereinafter explained. The sheave-holder D is attached to the tongue or pole of the car B, and moves with it. V'There is also attached to the upper side of the tongue a iioating bar, G, provided with a slot, N, Fig'. 3, through which the handles F R of the tongs project, and also with a spring, H. The long arm of the lever E, Fig. 2, isl bent upwardly near its loose end, and rests against the lower part of the tongue B on the sheave or wheel M in the holder D, being kept down to the sheave by the spring Q.

From the foregoing, the nature and operaA tion of my invention will be readily understood by all conversant with such matters.

It is well known that the principal injury to horses on all horse-railroads is not caused by a steady and regular draft, but in starting the cars when heavily loaded. It is also 'known that it is necessary for the driver on all horse cars to brake up the car by hand every time it is stopped, which it is frequently inconvenient or impossible to do properly and safely. These difficulties and objections are llargely overcome by my invention, by means of which the power of the horses is not only used to brake up 7 the car in stopping, but is exerted to the best advantage in starting.

Fig. 1 represents the mechanism in the position it assumes when the horses are drawing the car.` Now, if the horses are stopped, the pole B will be pushed backward to the position represented by the dotted lines b. The handle F, by this movement of the tongue, being caught by one side of the slot N in the bar G, will close the tongs formed by the levers F R, causing them tov grasp the serrated axle K firmly in their jaws, the handles being at the same time carried backward to the position represented by the dotted lines f r, reversing.

the movement of the wheels P and stopping the car. The reverse or backward movement of the pole also, at the same time, brings the sheave M into contact with the bent or camshaped portion of the lever E, causing the block S of the lever J to be forcibly pressed against the periphery of the wheel l?, and assist in braking up the car. The mechanism being in the position last described, if the horses are started, the brake E will be released, the opposite side of the slot N in the bar G will be brought into contact with the handle R, closing the jaws of the tongs upon the serrated axle K, and causing the wheels P to be started forward in a manner which will be readily obvious, the pull of the horses in starting the car being exerted upon the long arms of the levers R F, thus greatly economizing power. When the pole B is drawn forward to its fullest extent, the bar G is lifted by its loose end coming into Contact with the incline C attached to the inner side of the platform A, thus permitting the handle F to fall down, causing the tongs to release its hold ofthe axle.

Although more especially adapted to horseears, my invention is of great value for steamears, the pole B in sueh a oase being used to connect the ears of the train to each other and to the engine.

It will be seen that While the tongs F R act as a car-starter, they also act in combination with the levers E J as a brake.

Having thus described my invention, what I claim isl. In the running-gear of a car, the pole B, bar G, incline C, tongs F R, and axle K, oombined to operate substantially as and for the purpose specified.

2. 1n the running-gear of a car, the pole B, provided with the sheave M and spring Q, combined to operate with the pivoted brake E J, substantially as and for the purpose specied. 1

3. The ear-starter and brake, consisting of the pole B, bar G, incline C, tongs F R, sheave M, and pivoted brake E J, combined to operate substantially in the manner and for the purpose set forth.

vDAVID JEWETT.

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