US530783A

US530783A - Harry a

Info

Publication number: US530783A
Authority: US
Publication date: 1894-12-11
Anticipated expiration: 1911-12-11

Description

(No Model.)

H A. LEWIS. BRAKE SHOE.

N0. 530,783. Patented Dec. 11,1894.

Figaa W/TNESSES: lNVE/VTOH V BY ms vnzns co, wofoarruq, wAsmNcmm. D. c.

NITED STATES PATENT Futon.

HARRY A. LEWIS, OF NORRISTOWN, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND WVILLIAM M. SULLIVAN, OF SAME PLACE, AND DAVID O. KERBAUGH,

OF NEW YORK, N. Y.

SHOE.

SPECIFICATION forming part of Letters Patent No. 530,783, dated December 11,1894.

Application filed July 27,1894. SerialNo. 518,794. (No model.) i

T0 at whom it may concern:

Be it known that I, HARRY A. LEWIS, of Norristown, in the county of Montgomery and State of Pennsylvania, have invented a new and Improved Brake-Shoe, of which the following is a full, clear, and exact description.

My invention relates to improvements in brake shoes such as are adapted for use on railway cars of all kinds and, in fact,may be applied to any wheeled vehicles; and the ob- JBOt of my invention is to produce a brake shoe and attachments therefor which are so constructed that the shoe may be easily removed from its holder and reversed when necessary, that a new shoe maybe easily substituted for an old one, that the holder of the shoe may be conveniently removed from the brake beam, and that the shoe when in place will be held with the necessary rigidity.

To these ends my invention consists of certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the brake shoe and attachments embodying my invention. Fig. 2 is a central vertical section of the same, and Fig. 3 is a rear elevation of the same.

The brake shoe is of the usual curved shape, adapted to fit against the rim of the wheel and on its back is a dovetailed rib 11, adapted to enter a dovetailed groove 13 in the top of the curved holder 12 and to rest in a similarly shaped socket 14 in the bottom of the said holder, as shown clearly in Fig. 2. The rib is fastened by a pawl 15 which is held in a slot 16 in the back and upper portion of the holder 12, and the pawl enters an elongated notch 17 in the back of the rib, 11 and, striking against the lower shoulder of the notch, prevents the rib and shoe from rising.

The pawl 15 is journaled on a cross bolt 18 which extends through the holder 12, and the upper end of the pawl extends high enough above the holder to enable it to be pressed inward so as to remove the lower end of the pawl from the notch 17. The pawl is pressed into engagement with the notch by a bent spring 19, which lies in a recess 20 in the back of the holder 12. The bolt 18 which forms the pivot of the pawl also connects with the hanger 21 which is adapted to support the brake from overhead in the usual manner, and the bolt 18 also connects with a keeper 22 which has, at its lower end, a hole to receive the reduced end 24. of the brake beam 25 which may be of any usual kind,having a shoulder 26 to abut with the holder 12.

The reduced end 24 of the brake beam extends through the holder and is provided with a transverse pin 23 at its outer end, which is adapted to enter through the holes or slots 27 in the holder 12 and the keeper 22 is also provided with slots 22 to permit the pin 23 to be pushed through it. When the holder has been placed on the reduced end of the brake beam, the keeper 22 is placed on the said reduced end and is then turned inward and connected with the bolt 18, which brings the slots or holes 22 out of alignment with the'pin 23 and thus the holder is locked to the brake beam.

It will be observed that when the parts are together as shown in Figs. 1 and 2, the shoe is held rigidly in place by the pawl 15 and the dovetailed grooves of the holder 12, and 80 to remove or reverse the shoe it is only necessary to disengage the pawl, lift the shoe from the holder, tip it over and drop the rib 11 again into engagement with the groove of the holder. ,7

Having thus described my invention, I claim as new and desire to secure by Letter Patent-- 1. The combination with a brake shoe provided on its back with a dovetailed rib having a notch therein, of a holder provided with a dovetailed groove in its upper part, a dovetailed socket in its lower part, and a slot in its upper part, and a spring pressed pawl pivoted in the slot of the holder, said pawl hav- 5 ing its lower end engaging the notch of the rib and its upper end projecting out through the said slot, substantially as described.

2. The combination with a shoe holder provided with an opening, of a brake beam fitting I00 in the opening of the holder and provided with a transverse pin in its end, and a keeper having a slot to receive the pin on the brake beam, said keeper being turned and secured to the holder after the pin has passed through its slots to bring the slots out of alignment with the pin and thereby lock the holder to having the dovetailed rib on its back with an elongated notch in the rib, ofthe holder having a dovetailed slot at the top and a similarly shaped socket at the bottom to receive the rib of the shoe, the spring-pressed pawl pivoted in the holder and arranged to engage the notch of the rib, a hanger pivoted to the holder and having its pivot bolt projecting through the pawl, a brake beam pivoted to the holder, and a keeper connecting the hanger bolt and the outer end of the brake beam, substantially as described.

HARRY A. LEWIS.

\Vitnesses:

G. S. SHEIVE, J r., J. F. CHIsM.