US262230A - jarvis - Google Patents

Description

(No Model.)

E. A. JARVIS.

OAR STARTER.

Patented Aug. 8, 1882.

:NI'IED STATES PATENT OFFICE.

EDWVARD EMILIUS JARVIS, OF HAMILTON, ONTARIO, CANADA.

CA R-STARTE R.

SPECIFICATION forming part of Letters Patent No. 262,230, dated August 8, 1882.

Application filed May 17, 1882. (No model.)

To all whom it may concern Be it known that I, EDWARD ZEMILIUS J AR- VIS, of the city of Hamilton, in the county of \Nentworth, in the Province of Ontario, Do-' minion of Canada, have invented certain new and useful Improvements in Street-Oar Starters and 1 do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same.

The object of the invention is a simple but very efiective device for starting a street-car from the dead-stop in order to prevent the great strain which horses are subjecttoin starting them, particularly when going up grade and when a car is heavy laden.

By reference to the drawings forming part of this specification it will be seen that Figure 1 is a plan of device attached to section of a car. Fig. 2 is a side view of same.

A represents an ordinary street horse-car B, the wheels on the axle (l, and D the platform of the car; E, the dash-board at each end, respectively.

F is a ratchet-wheel keyed on the axle (l, as shown, being placed justinside of the wheels B.

h is a forked lever, made to straddle the said ratchet-wheel F at the lower end, and provided with a pawl, m, pivoted to it at the upper part of the fork, as shown at m, and terminating in a weighted end, 2', below the lever, as shown in Fig. 2, to act as a counter-balance when the lever is down.

It is a rod attached to the lower portion of the lever h, and has thereon a movable counterbalance-weight, j, for the purpose of assistin g to draw the lever h back to its original position, as shown at Fig. 2, after it has been pulled downward in starting a car.

9 is a sheave or pulley placed vertically, at right angles to the lever h, under the floor ofa streetcar, and secured to the same in suitable boxing. e is a similar sheave or pulley in a bracket, 0, which is bolted to the floor of the car.

f is a draw-head, consisting of an iron bar made to slide in brackets b at the front and d in the rear, said brackets being bolted to the under side of the platform D of a car. The said draw-head slides in the said brackets, and has attached to its front end a whifiletree, a, to which a horse is attached.

0 is another sheave, attached to the under side of the draw-head.

l is a chain or wire rope attached at one end to the lever h, and made to pass down through an opening, a, in the floor ot' the car around the sheave g, thence around the sheave e, and

lastly around the third sheave, e, and securely fastened to the car at or about the point 0.

It will be observed that the lever h is placed on the axle immediately under one of the carseats, and consequently will not be in the way of passengers. A small opening will be made in the end ofthe car, with two brackets,p, on each side of it, respectively, and between said bracketsis pivoted a weighted dog, q, provided with a hook at its upper end, made to catch on the end of the lever h when its outer end comes down to the door of the car and in contact with it.

1" is simply a wedge-shaped block to fill the space between the car-floor and draw-head; and the operation of the device is as follows: When the driver is ready to start the car the horse pulls on the whiffletree and the drawhead is pull out, as shown in dotted lines, Fig. 2, which tightens the chain or wire rope I and draws down the lever to nearly a horizontal position. The pawlm catching on the ratchetwheel,a great power is given to revolve the axle and start the car, which relieves the horse or horses from the severe and hurtful strains they are compelled to endure every time a car is started from a dead-stop; and it is found by experimental tests that by the use of my device the wheels are started rolling without excessive strain on the horse.

It will be observed that as soon as the lever his pulled down to the floor of the car and the car started its end is caught by the dog q, and the pawl m, being released from the ratchet-wheel F, falls back on account of the nearly horizontal position of the lever 71 and its end, weighted as at i, is released from the ratchet-wheel until the car stops, when the driver will touch his foot on the lower projecting part of the dog and the said lever h (by means of the weightj on the rod R) will rise to its position, as shown in Fig. 2, and the tooth of the pawl m fallsinto the teeth ofthe ratchetwheel. The slack of the chain lis taken up and all the parts are ready for the next start.

The mechanism above described may be I connected with the lever, substantially as deplaeed at any part of EllB'Cf LI; hutl'or convenience I will preferably place a lever, h, under the seat ofa car, and a ratchet-wheel and lever on each axle, and the draw-head in the center of the car-platform, and the other detail portions in the niostconvenient; position for effective acnion.

Having thus described my device, what I claim as my invention, and desire to secure by Letters Patent, is

1. In a car-starter, the combination of the lever h, loosely hung at one end directly on the caraxle G and elevated by a weight, a pawl, m, pivoted to the lever, the ratchet-wheel F, rigidly secured '00 the axle, and the draw-head scribed.

2. In a car-starter,the con'ibination,with the lever h,draW-headfiand chain 1, of'theshea 'es g c c, and brackets c b d,sul'istant,ially as specified.

3. In a car-starter, the combination of the weighted pawl m, lever h, ratchebwheel F on axle, rod 7c, and weightj, substantially as and for the purpose specified.

Hamilton, Ontario, Canada, May 8, 1882.

EDlVARD JEMILIUS JARVIS.

In presence of J. I. SEAVEY, WM. BRUCE.

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