US1647661A - Brake shoe - Google Patents

Description

Nov. 1, 1927.

J. W. PETERSON BRAKE SHOE Filed March 9, 1927 INVENTOR Jmm PETERSON A TORNEY Patented Nov. 1, 1927.

nirso sr-A'rs 1,641,661 PATENT OFFICE;

JOHN W. PETERSON, OF SOUTH BEND, INDIANA, A SSIGNOR TO BENDIX BRAKE COM- PANL; OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

BRAKE snon.

' Application filed March 9, 1927. Serial No. 173,805.

- This invention relates to brake shoes, and

is illustrated as embodied in a secondary shoe for a three-shoe internal expanding automobile brake.

Various features of novelty relate to reinforcing an arm of channel-section projecting at the end of the shoe, by means of a separate plate or stamping secured in the channel of the arm; to'arranging a tongue entering an opening in the outer band of the shoe, to take the shearing strains, by bending up radially of the shoe a section cut from an attaching flange underlying the band; to a noveh bushing arranged to receive the pivot "or anchor of the shoe; and to other novel wardly in Figure 1;

Figure 3 is a section through the bushing on the line 3-3 of Figure 2;

Figure 4': is a section through the pivot arms at the end of the shoe, on the line 4.--4 of Figure .2;

Figure 5 is a section through the shoe proper, before the lining is attached, on the line 55 of Figure 2;

Figure 6 is an elevation of the pivot end of the shoe, looking in the direction of the arrows 6-6 of Figure 2;

Figure 7 is a section through the left end of the shoe, on the line 7-7 of Figure 2;

Figure 8 is a section through the shoe near the left end, on the line 8-8 of Figure 2;

Figure 9 is a partial elevation, looking in the direction of the arrows 9 9 of Figure 2; and

Figure 10 is a partial section on the line 10-10 of Figure 5, but on a larger scale.

The illustrated shoe is the secondary shoe of a three-shoe brake of the general type of that described in Patent No. 1,628,388, granted Bendix Brake Company on May 10, 1927, on application of John R. Cautley.

It includes generally an outer arcuate band or rim 10, to which the brake lining 12 is riveted, and which is provided with two separate stifi'ening webs 14, and 16, each of which is enerally channel-shaped in crosssection, thus providing short lateral re1nforcing flanges at the inner edges of the websas well as outer attaching flan es underlying and spotswelded to the band 10.

According to one feature of the invention, the outer flanges of webs 14 and 16 are cut away at intervals to form notches 18. These notches facilitate the drawing of the stamplngs; moreover, part of the material provided by forming two or three of these notches is bent radially outward to form tongues 20 (Figureh) passing through slots in band 10 and taking the shearing strains tending to separate band 10 from webs 14: and 16 lengthwise of the shoe. As best appears in i Iparallel Figures 2 and 10, tongues 20 have sides and the two tongues are paral l with each other, so that there is no interference in inserting the tongues into the slots in band 10.

The left end of the shoe is arranged to be connected by a floating pivot to the primary shoe of the brake, each of'the webs 14 and 16 being provided with a bushing 24: for the pivot. At this end of the shoe, also, aplate or stamping 26, formed with a tongue 28 for the attachment of a return spring, is spotwelded to the inner flanges of the webs 14 and 16.

At the right-end of the shoe, webs 14 and 16 are extended beyond the end of,band 10 (i. e. beyond the friction face of the shoe) as projecting pivot arms. These arms are preferably strengthened by separate plates or stampings 30 set down into thechannels of the webs (see Figure 4) and spot-welded.

(Figure 2) or 8:2'(---W6lded (Figure, 4) in place.

At the extreme end of the shoe, a bushing 32 is provided for the anchor of the shoe, the bushing being headed atone end and having a flange spun over at the other end, to secure it permanently in place. A spacer 34 may be sleeved on bushing 32 between the webs 14 and 16. Washers 36 are shown (Figure 8) inserted next to Webs 14 and 16 under the head and the spun-over flange at the opposite ends of bushing 32.,

While one illustrative embodiment has been described in detail, it is not myi'intem tion to limit thescope ofthe invention to thatparticular embodiment, or otherwise than by the terms of the appendedclaims.

I claim:

1. A brake shoe having, in combination,

an outer arcuate bandTa stiffening member" integrally extended at one end of the band as a projecting arm, and a reinforcing plate secured in the channel of the stifiening member and reinforcing said arm. a

2. A brake shoe having, in combination, an outer arcuate band, a stiflfening member for the band channel-shaped in section and integrally extended at oneend oi the band as a projecting arm, and a reinforcing plate secured in the channel of the stiii'eninginelnher and extending from a-point short of the end of said band substantially to the end of said arm.

3. A brake shoe comprising an arcuate band formed with at least one opening, and

a stiilening member having a flange under lying the band, said flange being out inward- 1y from its edges toj-define a tongue bent outward radially of the shoe and extending through said opening.

l. A brake shoe'comprising an. arcuate band fonned with at least one opening, and

lsection and having its outer flange underly-- ing the bend, said outer flange being out inwardly from its edges to define a tongue bent ouiward radially of the shoe and ex tending through said opening.

5. A brake shoe haying spaced arms at one end formed with .alined openings, a bushing passing through said openings, and e spacer sleeved on the bushing and engaging the inner faces of said arms and rigidly spacing them. apart.

S. A brake shoe having, at least adjacent. its free end, a spaced pair of stiffening Webs, in combination with a separate plate secured to and bridging across said Webs and formed with an integral tongue for. the attachment of a return spring for the shoe.

In testimony whereof, l have hereunto \signed my name,

Jenn W. Pmneson.

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