US425974A - Brake-shoe support - Google Patents

Description

(No Model.)

S. A. BEMIS. BRAKE SHOE SUPPORT.

Patented Apr. 22, 1890.

NITE STATES PATENT OFFICE.

SUMNER A. BEMIS, OF SPRINGFIELD, MASSACHUSETTS.

BRAKE-SHOE SUPPORT.

SPECIFICATION forming part of Letters Patent N 0. 425,974, dated April 22, 1890.

Application filed February 10, 1890. Serial No. 339,928. (No model.)

To all whom it may concern:

Be it known that I, SUMNER A. BEMIS, a citizen of the United States, residing at Springfield, in the county of I Iampden and State of Massachusetts, have invented new and useful Improvements in Brake-Shoe Supports and Means for Attaching Same to the Brake- Beams of Cars, of which the following is a specification. I

This invention relates to car-brakes, the object being to provide improved brake-shoesupporting devices and improved means for attaching said devices to the brake-beam, whereby the brake-shoe and its holder or sup port are held in operative relation to each other and are secured to the brake-beam by means of a single bolt, and the brake-shoe when worn, may be conveniently replaced by another one by simply detaching and reattaching said bolt.

In the drawings forming part of this specification, Figure 1 is a side elevation of a section of a car-wheel and of a brake-shoe and brake-holding devices and of devices for looking the brake-holding devices to the brake beam constructed according to myinvention, said figure showing the brake-beam in end elevation in operative relation to the abovementioned parts. Fig. 2 is a rear elevation of the brake-holder and the beam-locking parts and an edge view of a portion of the brake-beam. Fig. 3 is a plan view. Fig. at is a sectional view of the brake-shoe and the brake-shoe holder about 011 line 4 at, Fig. 1, said figure indicating in dotted lines the position of the tread and rim of a car-wheel in relation to the bearing-face of the brakeshoe.

In the drawings, E indicates the brakebeain, made, preferably, of wronght i'ron in the form shown, and A indicates a segment of a car-wheel.

B is the brake-shoe holder, made, preferably, of cast-iron, having its face suitably curved to receive thereagainst the brakeshoe D. Said brakeshoe holder has a bifurcated bracket 3 formed on its outer side, consisting of the two arms 0 0, the opening between said arms being sufliciently wide to receive the brakebeam E on the lower one of said arms 0, as shown in Fig. 1 and to permit of passing the shank of a bolt 5 between the upper side of the brake-beam E and the under side of the upper arm 0 of the bracket 3, the outer edge of said brake-beam projecting slightly beyond the end of said bracket, as shown in Fig. 1. The said brake-shoe holder B has therein, as clearly shown in Fig. -:t, a socket or recess 8 and a bolt-shank passage .2, leading from said recess e rearwardly.

The brake-shoe D has a bolt-head chamber 0 formed therein, one end of which is open on its beal'ingface, and at the base of said chamber is an opening 90 therethrough, through which the shank of the bolt 5 is passed,the rear side of the brake-shoehavinga projection thereon opposite said chamber 0, which is of suitable form to fit into the said recess 6 in the face of the brake-shoe holder B.

A clamp-block at is constructed to grasp the outer edge of the brake-beam E, and has an opening therethrough to provide for passing the screwed end of the bolt 5 through the upper part thereof, as shown.

In applying the above-described brake-shoe and brake-shoe holder to the brake-beam the said holder has the brake-shoe applied thereagainst, the said projection on the inner side of the brake-shoe entering the recess e in the holder. The bolt 5 is then passed through the opening 0 in the face of the brake-shoe and through the passage .2 in the brake-shoe holder, the bolt-head coming to a bearing on the base of said opening 0, its screw-threaded end projecting beyond the end of the bracket 3 011 the holder. The holder is then placed on the brake-beam in the position shown in Fig. 1,-the clamp-block 4; being placed 011 the end of said bolt and engaging with the outer edge of the brake-beam, as shown, and the nut S is then screwed against said clamp-block, thereby firmly locking the brake-beam, brakeshoe, and intermediate brake-shoe holder rigidly together.

To replace a worn-out brake-shoe with a new one is the work of but a few moments and requires only that the bolt 5 be removed, the worn-out shoe be then taken oit from the holder 3, a new shoe be placed thereon, and the bolt replaced and secured therein by its nut.

By means of the within-described devices for securing the brake-shoe and its holder 011 2 azaem the brake-beam the latter is not in the least mutilated, and the holder and the shoe are adjustable longitudinally on the beam to accommodate varying gages of track and Wheels.

hat I claim as my invention is 1. A brake-shoe holder havinga bifurcated bracket on the outer side thereof to receive the brake-beam, and a recess in its opposite 10 side to receive a projection on a brake-shoe,

and a bolt-passage leading from said recess and communicating with the space between the arms of said bracket, substantially as set forth.

2. A brake-shoe holderhavinga bifurcated bracket thereon to receive the brake-beam, a brake-shoe applied to said holder, a bolt passing through said shoe and holder, and a clamp-block engaged by said bolt and engaging with the brake-beam, combined and operating substantially as set forth.

A brake-shoe holder having abifureated bracket on the outer side thereof to receive the brake-beam, and a recess in its opposite side to receive a projection on a brake-shoe, and abolt-passage leading from said recess and communicating with the space between the arms of said bracket, combined with a brake-shoe having a projection thereon to enter said recess, a bolt Whose head engages with the shoe in said recess, extending from thence through said holder, and a clampbloek engaged by said bolt and engaging with the brake-beam, substantially as set forth. SUMNER A. BEMIS. Witnesses:

WM. S. BELLoWs, H. A. CHAPIN.

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