US730048A - Emergency car-brake. - Google Patents

Description

Not-730,048. PATENTEDJ-UNB2,1903% q. M. ROSS.

EMERGENCY GAR BRAKE.

APPLICATION FILED APR. 4, 1903.

10 MODEL.

Patented June 2, 1903. I

PATENT OFFICE.

.JOHN M. ROSS, OF VENEIIA, PENNSYLVANIA, ASSIGNOR OE ONE-FOURTH TO SHESHBAZZAR KENNEDY," OF RIVERVIEW, PENNSYLVANIA.

EMERGENCY CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 730,048, dated June 2,1903.

Application filed April 4. 1903. Serial No. 151,063- (No model.)

To all whom it may concern.-

Be it known that I, J OHN M. Ross, a citizen State of Pennsylvania, have invented certain new and useful Improvements in Emergency Car-Brakes, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in emergency carbrakes, and relates more particularly to that class of brakes which are adapted to be used as an auxiliary means ofstopping the car when the usualbrakes, which are on the said car, fail in their operation; due to any cause.

The object of this invention is to provide an emergency-brake wherein the same may be controlled from either platform of the car; but said control would be preferably from the end at which the motorman or operator was stationed.

A still further object of this invention is to provide an emergency-brake wherein the said brake may be readily operated and in its operation will slightly elevate the wheels from the track, and the actuated shoe is brought in contact with said track, the friction of said shoe being. coincident with the rate of speed of the car. 1

A still further object is to have the said shoe removable, whereby the same may be renewed without the expense of replenishing the whole apparatus when the same becomes worn and also to provide a brake which may be readily disengaged from its operative position by a slight reverse movement of the car.

In describing the invention indetail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views,in which-- Figure 1 represents a plan view of the running-gear frame of a car with my improved emergency-brake applied thereto; Fig. 2 is a vertical sectional view of the same. Fig. 3 is a sectional detail showing the means for attaching the removable brake-shoe to the brake or band lever.

In the drawings, 1 indicates the frame of the car, to which the trucks are attached, and

running between the side bars 2 and 3 of this frame, in a vertical line with the axle of the wheels, are the shafts 4 5, which extend from and have bearing in the side bars 2 and 3.. Centrally attached to these shafts 4 and 5 are the brake-band levers 4 5', the same on opposite sides being secured together by the beams 6 and '7. The lower ends of these bands 4 and 5 have removably attached thereto by dovetail connection the actuated shoes 8 and 9, and the inner surface of said shoes and bands are formed in an arc the radius of which is substantially that of the radius of the tread of the wheel. Attached intermediate the length of the shafts l and 5 are the cranks 1O 11, the, rods 12 and 14: running from the same to levers 15 16, which are pivotally connected in suitable brackets on either platform of the car. The upper ends of these levers 15 and 16 are squared, and the removable handle 17 has on one end a socket adapted to fit over the square end for the purpose of actuating the same. Springs 18 and 19, one end of which is attached to the beams 6 and 7 ,i have their other end attached to the rod 20, which runs between the side beams 2 and 3, these springs serving as a means of normally holding the bands and brake-shoes in their disengaged position, but said spring being of such strength thatthe actuation of the rods 15 and 16 by the motorman is permitted to distend the same, thereby causing the bands and shoes to be brought into contact with their respective wheels. The lower edges ofthe brake-shoes are actuated in such a manner that a greater resistance is aiforded between the same and the track, and when said shoe is brought into 7 contact with the wheel the same is of sufficient length to permit the wheel to roll up on the same, thereby disengaging the wheel from the track and causing the entire weight which was on the wheel to be applied to the track through the shoe, which is provided with a corrugated surface, thereby producing a greater friction between said vehicle and the track, through the medium of the shoe. These shoes are nor mally held in place by the countersunk screw 21 and may be easily renewed at any time by removing said screw and shoe and inserting the new member.

While I have herein shown and described a practical embodiment of my invention, it will be obvious that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, an d desire to secure by Letters Patent, is

1. In an emergency car-brake, the combination of a series of segmental bands, one of which is adapted to be applied to the tread of each wheel, the inner are of the same being a radius of substantially the same length as the radius of the wheel, the lower end of said band having removably mounted therein a corrugated shoe adapted to be interposed between the tread of the wheel and the track when the brake is in the operative position, said bands being suspended from a horizontal shaft secured in the frame of the car, a lever mounted in the bracket at either end of the car and having a connection with one set of the hands, a removable operating-lever adapted to be secured to one or the other of the lovers located at the end of the car whereby the brakes may be moved to the operative position, and means for normally holding said brakes in the inoperative position.

2. In an emergency-brake, the combination of a series of segmental bands, the inner surface of which is adapted to conform to the outer surface of the tread of its respective wheel, the lower end of said band having removably mounted therein a corrugated shoe, bands for opposite wheel being suitably tied together, a removable operating-lever adapt-ed to be secured to the actuating-lever on one or the other platform of the car, connections between said actuating-lever and the crank attached to the shaft 011 which. the brake-bands are secured, whereby the same maybe brought into the operati e position by movement of the operating-lever, and means for normally holding said bands in the inoperative position substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOHN M. ROSS.

\Vitnesses:

A. M. Wilson, E. E. POTTER.

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