US233850A - Car-brake - Google Patents

Description

mme A. P. GUE-fav G. P. PIB-LD.

. Car Brake. No; 233,85). Patented N ov. 2,1880.`

RETI.

NAPEYERS. PHDTQLITNOGRAPNER. WASHINGTON. D 7A limitan STM-Es PATENT Ormea.

ALBERT F. GUE AND GEORGE F. FIELD, OF BOSTON, MASSACHUSETTS, ASSIGNORS TO THE AMERICAN STANDARD BRAKE COMPANY, OF CON- CORD, NEW HAMPSHIRE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 233,850, dated November 2, 1880,

Application tiled June 30, 1880. (No model.)

To all whom it may concern Be it known that we, ALBERT F. GUE and GEORGE F. FIELD, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Car-Brakes, of which the following description, in connection with the accompanying drawings, is a specitication.

This invention relates to car-brakes, and is an improvement on patent ofthe United States No. 199,286, heretofore granted to us, to which reference may be had.

In this our present invention we have changed the form of the auxiliary brake-lever, which is operated by the wire rope, have adapted it to turn horizontally, and have applied to the said lever mechanism tov push it backward, so as to quickly release the hold of the usual brakes upon the wheels, the said mechanism being adjustable as to its strength or power.

In this invention the clutch to engage and rotate the chain drum or spool is forced 1n contact with the drum by means of collars recessed to lit the hubs of the clutches, the collars being crowded aga-inst the said clutches by means of forked clutch-levers connected with toggle-levers7 substantially as usual in our patented brake.

By the employment of the collars we are enabled to dispense with the small anti-friction rollers employed on the clutch-levers of the patent, making the apparatus stronger and more certain in its operation, and we have provided means for lubricating the said collars.

Figure l represents an under-side View of a Caboose-car provided with the improvements the subject of this application 5 Fig. 2, an enlarged detail of the clutches, and drum, collars, and their actuating devices, partially in section; Fig. 3, a detail of the hand-lever for operating the collars and clutches to cause the wire rope to be wound on the drum, and Fig. 4 is a detail, showing the toggle-levers and their connection with the lever that moves them.

The brake-levers and shoes for the trucks at both ends of the car are alike, so part of one end of the car is omitted to save space on the drawings.

The car-trucks, axles, and wheels, brakebeams a a a2, their connected shoes to bear upon the wheels, the links I) b', short lever b2, wire rope b3, spool b4, toggle-lever c, connected with the clutch-levers c3, the yoke c2, and clutch g are all substantially as common either in ordinary freight-cars or in our patent referred to.

The auxiliary brake-lever' c has a vertical pivot, e', so that the lever is permittedto turn horizontally when acted upon by the wire rope over the pulley e2. This lever c, by the rod c3 and chain c4, operates the usual lever b2, the latter lever being connected, in the usual manner, by rod c5 with a like lever (not shown) at the opposite end of the car.

The lever e has connected with it pushing mechanism to push it back and take up the slack in the wire rope. This pushing mechanism is composed ot' a rod,f, connected with the lever and extended through an ea-r, f, a spring', f2, on the said rod being made adj ustable as to its force by means of an adjustingnut, f3.

The clutches g, that act upon the end of the loose drum or spool t4, are keyed to slide on and rotate with the axle L. These clutches, madeas ilanged disks, are forced against the ends of the drum b4 by the collars h2, placed loosely on the shaft h, the collars being;` recessed at their faces to fit the hubs g2 of the clutches.

The collars have loops h3 at each side to receive the forked lower ends of the clutch-levers c3. These collars have hubs recessed, as shown -at l, Fig. 2, to receive packin g and oil, and the drum b4 has packing Z2, oil bein g applied to it by removing the screw or plug m.

These collars are a great improvement upon the rollers employed in our former patent to crowd and hold the clutches closely to the drum, are stronger an d more durable and positive. The rollers frequently become injured by blows against them and from various other causes.

The colla-rs are moved by the clutch-levers through the toggle-levers and lever c, the latter lever being actuated, as herein shown, from the hand-lever u and its connected parts a n2 a3.

The lever e has upon it an anti-friction roller, 0, arranged to run on the curved supportingbar o2, thus keeping the lever e firmly up near the bottom of the car, where it is out ot' the way and less liable to he injured than when made as an elbow-lever on a horizontal pivot, as in the patent.

NVe employ wire rope, as it is preferred, but other rope of proper strength would answer instead.

Washers of leather or other substance are placed between the clutches and drum-heads.

We claim- 1. In a car-brake, the horizontally-vibrating lever c, pivoted at one end, the pulley or sheave e2 for the wire rope at its other end, and the brake-moving link e3, connected with the said lever between its ends, combined with the wire rope, brakes, and connections, substantially as described, between the link e3 and brakes, as and for the purpose set forth.

2. Thehorizontally-vibrating auxiliary brakelever e, and its roller o, combined with the curved support 02, and with thc pulley c2, and

wire rope to move the lever, substantially as described.

3. ln a car-brake, the horizontally-vibrating brake-lever e, and the wire rope to move it in one direction, combined with the adjustable pushing mechanism to push the said lever backward when the rope is released, all substantially as described.

4. In a car-brake-operating mechanism, a system of operating-levers, a drum on the axle, clutches g to engage such drum, and collars h2, sliding; on the axle, and having lubricant-recesses l, for oiling the same, and connected with the operating-levers and thc clutches, all constructed and arranged to operate as shown.

In testimony whereof` we have signed our naines to this specification in' the presence of two subscribing witnesses.

ALBERT F. GUE. GEORGE F. FIELD. Witnesses:

Jos. P. LIVERMORE, N. E. C. WHITNEY.

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