US1614460A - Brake shoe - Google Patents

Description

Jam 18 192?. m A. I. DODGE BRAKE SHOE Filed March 23:, 1926 svEoR ATTQRNEY lI l/tlllri IAVXI Rattlented Jan. 18. lfl ..,i

"if S P-A'TET -FI-CE.

ADIEL Y. DODGE. OF SGUTH BEND, INDIANA. ASSIGNOR T BENIDIX BRAKE COMPANY,

ILLINOIS, A CORPORATION OF ILLINOIS OF CHICAGO,

BRAKE ssron.

Application. filed iit'erch 29, 1926. Serial no. 98,109.

This invention relates tohruhe shoes, and is illustrated as embodied in a shoe for an internal expanding uutoinobilc llltilfit). An in'lportunt feature of the invention contem- 0 plates reinforcing a pair of arms or spaced flanges projecting beyond the friction face at one end of the shoe, by means of :1 novel member, preferubly of channel-section, sc-

cured between them with its central porli! tion substantially flush with and forming a continuation of the friction face of the shoe. An important ihinorohject is to reinforce the corners of the cylindrical friction-fuce flanges by tapered truss portions integral with thrustflenges extending transversely in opposite directions at the end of the shoe.

The shore and other objects and features of the invention will he apparent from the following description of one illustrative embodiment sho'wn in the accompanying drewing, in which:

Fig. 1 is a vertical section through a brake,

just inside the head of the brake drum,

shoving two of the novel shoes in side eleva-- tion;

Fig. 2 is an inside elevation of one of the novel shoes; 1

Fig. 3 is a,- side elevation of one of the shoes, before the brake lining is attached;

Fig. iis i partial inside elevation, showing one end of the shoe and loolringin the direction of the arrows ;--4 of Fig. 3;

Fig. 5 is a section through the shoe on the line 5-5 of Fig. 3, showing the spaced arms or flanges; r

Fig. 6 is t section through the shoe on the line 8-41 of Fig. 3, showing the stilfening web of the shoe; and

Fig. 7 is an outside elevation of one end of the shoe, looking in the opposite direetion from Fig. 2.

The brake illustrated includes a drum 10, "at the open side of which is u hacking plate or the like 12, and within which are arranged three shoes 14, 16, and 18. Shoe 14 is anchored on backing plate 12 by a. pivot 20 passing through a relatively large opening" in the web of shoe 16, and shoe 16 is anchored on the hackingplate by a pivot passio thr ugh relatively large openings 2i in the spaced arms or flanges at the end the shoes. Shoe be dentical and is shown (1053.

' of shoe 1%, thus overlapping .8, which may if desired" nterchangeble with shoe nceted by a pivot 26 to the unanchored end of shoe 16.

Shoes 14 and 18 are forced apart tea-apply the brake, against the resistance of a return spring 28, by means such as it double cam 30, whereupon shoe 18 turns with the drum and forces shoe 16 against the drum, against the resistance of an auxiliary return spring If desired, an anti-rattle spring 34 may be arranged in the openings 24 of shoe 18, and connected at one end to the hacking plate and at the other end -to a pin 36 bridging across one opening 24: and seated in depressions 38 (Fig. 3). The free ends of shoes I l and 18 are shown confined by a plate 40 carried by posts 42 passing through relatively large openings M in the webs of the shoes.

he present invention relates to the construction of shoes such as the shoes 14 and 18. Preferably the body of the shoe is made up largely of two sheet-metal stainpings, generally L-shaped in cross-section. One stamping includes a. radial stiffening flange and a cylindrical friction flange 52, the other including similar flanges Mend 56. The two stainpings are arranged back to back, with the radial flanges 50 and 54 riveted or otherwise secured together. If desired, the inner edges of the stuinpings may have narrow reinforcing flanges 58, and. in the illustrated shoe there is a continuous flen e extending entirely around each of the flanges 50 and 54, parts forming the friction flanges 52 and 56, and parts forn'iing the narrow reinforcing flanges 58. t

An important minor feature of the inven tion relates to forming at the end of the shoe, and preferably of portions of the above-described continuous flanges, oppositely-eiztending transverse thrust flanges to which a com or thrust. plate 62 may be secured, and which are continued upwardly as tapered truss portions 64 (Fig. 2) supporting the corners of the friction flanges 52 and 56. I

According to another feature of the invention, at the opposite end of the shoe the flanges 50 and 54, which jointly form. the stiffening Web of the shoe, are s read or spaced apart, to form arms straddling one end or the other of shoe 16, the flan cs 52 and 56 beingcorrespondingly narrowe ,ond e channelsection reinforcing member 68 being Welded or otherwise secured between the 2 reiaeeo arms. The member 68, which is preferably a sheet-metal stamping, has its central portion substantially flush with the friction face of the shoe, i. c. with flanges 52 and 56, and thus forms in effect a continuation of the friction face. The sides of member 68 may be formed with notches 70 registering with openings 24, if it be desired to form the channel section of a considerable depth. Member (38 is tapered at its front end, to fit .in the angle between flanges and 54 (Fig. 7). I

lVhile one illustrative embodiment has been described in detail, it is not my inten tion to limit the scope of the invention to that particular en'ibodinient, or otherwise than by the terms of the appended claims.

- I claim: I

1. A brake shoe including two pressed metal portions, each including a radial flange and a cylindrical flange, arranged with the radial flanges engaging each other, back to back to form a st-ill'ening web for the shoe, the shoe being formed at one end with a pair of transverse radial thrust flanges projecting away from each other in substantially the same plane at the end of the stiffening flange, and continuedoutwardly as tapered truss portions extending to and supporting the outer corners of the cylindrical 2. A brake shoehaving a friction face and a pair of spaced arms extending beyond the friction face, together with a channel-sec tion member secured between and reinforcing the arms and having its central portion substantially flush with and forming a con tinuation of the friction face.

3. A brake shoe having a friction face and a pair of spaced arms extending beyond the friction face, together with a channelsection sheet-metal stamping secured between and reinforcing, the arms and having its central portion substantially flush with and forming a continuation of the friction face.

4. A brake shoe having a friction face iiiid a pair of spaced arms extending beyond the friction face and provided with openin s opposite each other, together with a chann section member secured between the arms with its central portion substantially flush with the friction face and with the edgesof 1 .its sides formed with notches registering .7

tion of the friction face, together with a member secured between the lspacegi stiffening flanges and having its outerl surface substantially flush with the 'outer surfaces of said narrow flanges, to form with them a continuation of the friction face.

6. A brake shoe having fa. friction face and a stiffening web separated at one end of the shoe into two flanges which are spread apart from each other at an; angle and then continued as generally parallel arms, together with aseparate member secured between said arms and tapered-at one end to fit into saidangle.

'2'. A brake shoe having a fniction face and a stiffening web separated atone end ofthe shoe into two flanges which are spread. apart from each other at an angle and then continued as generally parallel arms, together with'a separate member secured between said arms and tapered at one end to fit into said angle, and which is substantially flush with and which forms a continuation of the friction face.

8. A. brake shoe having a friction face and a stifiening web formed of a pair of separate flanges secured together at the center of the shoe and spread apart at an angle at one end of the shoe and then continued as generally parallel arms,'together with a reinforcing member between said arms and taperedat one end to fit into said angle.

9. A brake shoe having" a friction face and a stiffening web formed of a pair of separate flanges secured together at the cen ter of the shoe and spread apart at an angle at one end of the shoe and then continued generally parallel arms, together with a reinforcing member between said arms and tapered atone end to fit into said angle, and which is substantially flush with and which forms a continuation of the friction face.

In testimony whereof, I have hereunto signed my name.

' ADIEL Y. DODGE.

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