US2048468A - Brake shoe - Google Patents

Description

Patented July 21, 1936 PATENT orrica BRAKE snon Adolph Rosner, South Bend, Ind., assignor to Bendix Brake-Company, South Bend, Ind., a

I corporation oi Illinois Application April 21, 1930, Serial No. 445,870

This invention relates to internal brakes and more particularly to the braking element thereof.

An object of the invention is to provide a fricexpanding tion element possessing great strength and riformed and secured by one edge thereof to the Still a further object of the invention is to provide a method for the manufacture of a friction element for a brake, wherein the reinforcing web of the element may be stamped from sheet material crimped or corrugated and deformed to the radius of the rim of the element.

Other objects of the invention will appear from the following description taken in connection with the drawing, which forms a part of this specification, and in which:

Figure 1 is a side elevation of a brake shoe embodying the invention;

Figure 2 is a plan view of the back of the shoe;

Figure 3 is a plan view of a stamping from which the web is formed having reinforcing plates secured to its respective ends;

Figure 4 is a sectional view of the stamping shown in Figure 3 after it has been crimped or corrugated;

' Figure 5 is a sectional view of arim and the strengthening web after they have been formed;

Figure 6 is a similar view illustrating the rim and web welded together; and

Figure 7 is a sectional view substantially on line 1-1, Figure 3, illustrating the reinforcing clip for the anchor portions of the shoe.

Referring to the drawing for more specific details of the invention, Ill represents g nerally a friction element or a shoe for an internai expanding brake. Asshown, the shoe comprises a rim Ii having secured thereto a suitable lining l2. The rim is reinforced by a corrugated web I3 having positioned on its respective ends reinforcing clips l4 apertured as indicated at l5 and Hi to receive an anchor and an articulating connection not shown.

The web i3 is stamped from sheet metal first in the form of a blank IT. This blank has suit ably secured to its respective ends as by spot welding the reinforcing members l4.,

friction or connection with certain specific embodiments, the

- same plane and apertured,,reinforcing plates bent Thesemembers are preferably made ofsheet metal bent 2 Claims. (Cl. 188-250) upon themselves as shown in Figure 'l to fit snugly on the ends of the blank H. The reinforcing members I together with theends of the blank are apertured asat l5 and 16 for the purpose hereinbefore specified. The blank is then corru- 5 gated substantially as shown in Figure 4.

Assuming that the rim H has been previously bent or formed to the desired arc, the web is then deformed to the radius of the rim substantially in the form shown in Figure 5. In deforming the web to the radius of the rim that portion lying immediately adjacent to the inner periphery-of the rim will be extended or stretched to a greater or less degree, whereas that edge farthest from the inner periphery of the rim will be compressed. Hence, the corrugations of the web will be contractedin pitch at the inner periphery of the web and expanded at the opposite edge. This produces a'web having a tapering cross section.

This is due to stretching that portion of the 20 web adapted to engage the rim and compressing that portion or edge of the web farthest removed from the rim. Upon deforming the blank I! to conform to the rim, it takes the shape illustrated in Figure 5, after which it is spot welded to the rim, as indicated at It.

A friction member or shoe provided with a web of this character possesses great strength and rigidity and that by virtue of the particular form ofweb, the friction member or shoe as a whole may be manufacturedfrom comparatively light sheet metal, accordingly great saving in the cost of production is effected.

Although this invention has been described in fore, to be limited only as indicated by the scope of the appended claims. The method of manu- 40 facture described above is claimed in my divisional application No. 634,040, filed September 20, 1932.

Having thus described the various features of the invention, what I claim is new and desire to secure by Letters Patent is:

1. A friction member comprising'a rim, a lining secured to the rim, a corrugated web secured to the rim and plates bent upon themselves and fitted on the respective ends of the web.

2. A friction element comprising a rim, a lining secured to the rim, a reinforcing corrugated web spot welded to the rim, the respective ends of the reinforcing web being positioned in the upon themselves to embrace the respective ends of the web, the reinforcing plates having apertures coinciding with the apertures in the respective ends of the web.

ADOLPH Rosana.

July 21, 1936. c. G. SALMON 2,048,469

OPHTHALMIC MOUNTING Filed May 28, 1935 CHESTER G. SALMON INVENTOR

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