US1188731A - Railway-brake. - Google Patents

Description

W. R. CHANDLER.

RAILWAY BRAKE.

APPLICATION FILED FEB. I. 1916.

Patented June 27, 1916.

WILLARD B. CHANDLER, OF SUMTEB, SOUTH CAROLINA.

RAILWAY-BRAI'KE.

Specification of Letters Patent.

Application filed February 1, 1916. Serial No. 75,508.

To all whom it may concern Be it known that I, WILLARD R. CHAND- LER, a citizen of the United States of America, residing at Sumter, in the county of Sumter and State of South Carolina, have invented certain new and useful Improvements in Railway-Brakes, of which the following is a specification.

My present invention relates to improvements in railway brakes, and is designed particularly for the purpose of providing a brake for use on railroad cars, locomotive tenders, etc., which is of such construction that the possibilityof accidental displacement or loss of parts is practically elimi nated, while on the other hand an eiiicient,

durable and comparatively inexpensive device is provided for the performance of its requisite functions.

In my improved railway brake I have devised means by which parts of the braking device are prevented from falling to'the track, but are supported in such manner that loss and displacement are avoided, even when, due to carelessness, the parts would otherwise be a danger and menace to safety.

The invention consists essentially in cer tain novel combinations and arrangements of the brake head and brake shoe and brake beam, in connection with the brake suspension device as will be hereinafter more fully described and claimed.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles of my invention.

Figure 1 is a view in elevation, of a portion of a railroad truck, showing my im proved braking device applicable to the near left hand wheel, not shown. Fig. 2 is a side elevation of the braking device applied to the wheel complementary to the one omitted in Fig. 1, showing the beam and suspending bolt in section. Fig. 3 is a perspective view of the brake head. Fig. 4 is a perspective view of the brake shoe.

In the preferred embodiment of my invention I have illustrated in the drawings the standard type of bolster frame 1, the brake beam 2 with a reduced, squared extension 3 havinga threaded end 3 as usual. The beam is suspended from the bolster frame by means of a metallic strap 4:, one at each side of the truck, which is preferably of resilient'metal so that the beam may swing outwardly from under the bolster frame, as usual, and the wheel 5 is shown to more clearly indicate the application of the brake thereto. There are. four wheels of course to the usual rallway truck for cars, but'only one is necessarily hereln shown.

Patented June 27, nae.

The brake is ofhe separable type and comprises a head 6 fashioned with an integral rearwardly extending boss 7 provided with a central opening 8 extending transversely therethrough, while the face of the head is formed with a groove or open end mortise 9 and an additional recess or socket 10 is cut in the metal of the wall of the mortise. v

The detachable shoe 11 is equippedwith' the usual end toes 12 12 .to embrace the brake I head, and a centrally located 'lug 13"of proper dimensions to fit neatly within themortise 9, is formed at the back of the shoe. This lug or tenon 13, is cored out and formed with the opening 14: which extends transversely through the tenon, and the lower edge of the tenon is provided with a downwardly projecting flange 15, which however extends only approximately half way across the tenon and is adapted to seat in the socket or recess 10 of the brake head. In assembling these parts, the brake head and brake shoe, it is obvious that the tenon 13 is slipped into the mortise 9 of the head and the flange 15 of course slips into the socket 10 of the head. The brake is suspended on the reduced extension 3) of the beam which is passed through the opening 8 in the boss 7 and the parts looked as usual.

In addition to the straps 4., the brake beam and brake are supported from the bolster frame 1 by means of the pair of hangers 17 17 which are fiat metallic straps perforated at both ends, and at the upper ends these straps are pivoted on the bolt 18 and secured by the cotter pin 18 in the hanger plate 19 which is attached by bolts to the bolster frame 1.

By means of the bolt 20 which is passed through the lower perforated ends of the hangers and the opening 14 in the lug 13 of the brake shoe, the latter is pivoted in the hangers, and a cotter pin 21 passed through the perforated end of the bolt 20 locks the hangers on the brake.

In addition to the hangers I employ a bolt with a flat, perforated shouldered head 22, which is passed through the beam extension 3 and its shank 23 is perforated to receive the cotter pin 24. This head it will be seen prevents the lateral displacement of the brake, even should the hangers or one of them be displaced. The head holds the brake head and brake shoe in close relationship and prevents lateral displacement at one side, while the flange 15 in the socket 1O prevents lateral, displacement of the parts from the other side.

By the utilization of the bolt 20 I have eliminated the vertically arranged key almost universally used on brake devices, which, as is well known by railroad men are frequently taken from the brake for the purpose of packing the journals of the trucks andare not put back or replaced, with the result that the shoe will work loose and fall to the track after the car is in motion, causing wrecks and derailment.

From the drawings and description herewith it will be seen that neither the brake shoe nor brake head can fall to the track even when unsupported other than by the bolt 23 and beam, the former holding the shoe to the head and preventing its loss.

What I claim is 1. The combination with a brake beam and a brake head fixed thereon having an open mortise in its face, of a separable brake shoe formed with a perforated tenon fitted in the mortise, a bolt fixed in the beam having a perforated head, a bolster frame and hangers, and a bolt passed through said hangers, perforated tenon and perforated head of the beam bolt.

2. The combination with a brake beam and a brake head fixed thereon having an open mortise in its face, of a brake shoe formed with a perforated tenon fitted in the mortise, a bolt fixed in the beam having a perforated head, suspending means, and a bolt passed through said suspending means, the perforated tenon and the per foratcd head of the beam bolt.

3. The combination with a brake beam and a brake head fixed thereon having an open mortise in its face-and a recess in a wall of the mortise, of a brake shoe formed with a perforated tenon having a corner flan e, a bolt fixed in the beam having a per orated head, hangers, and a bolt passed through the hangers, the perforatedtenon and the perforated head of the beam bolt.

I n testimony whereof I atiix my signature.

WILLARD R. CHANDLER,

coplel of thll ps-tent may be obtained for five cent: each, by addressing the "Commissioner of Patents, Wilmington, D. O.

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