US1821070A

US1821070A - Brake shoe

Info

Publication number: US1821070A
Application number: US460037A
Authority: US
Inventors: Nelson Albert
Original assignee: American Brake Shoe and Foundry Co
Current assignee: American Brake Shoe and Foundry Co
Priority date: 1930-06-09
Filing date: 1930-06-09
Publication date: 1931-09-01
Anticipated expiration: 1948-09-01

Description

Sept. 1. 1931.

A. NELSON BRAKE SHOE Filed June 9, 1930 .z m l iflm N E wh- HT@H'|IIH {/0 LT Q inis]! J W? Patented Sept. 1, 1931 UNITED STATES PATENT; OFFICE ALBERT NELSON, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO AMERICAN BRAKE SHOE AND FOUNDRYOOMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- \VARE BRAKE snon Application filed June 9, 1930. Serial No. 460,037.

This invention relates to railway brake shoes of the center-fastening type and it has for its object to provide a solid substantial construction for the attaching lug and the back at the base of the lug- I haveillustrated the invention in a flanged driver type of brake shoe and referring to the drawings Fig. 1 is a plan view of the reenforce back.

Fig. 2 is an edge view of the back partly in section.

Fig. 3 is a transverse sectional view of a shoe on the line 83 of Fig. 1.

Fig.4 is a transversesectional view of a shoe on the line 44 of Fig. 1.

Fig. 5 is a fragmentary sectional view of the reenforce back.

Fig. 6 is a detail perspective view of the lug strap.

Referring to the drawings the reenforce back 7 is embedded in the back of the body 8 during the casting operation and it is provided with openings 9 and recesses 10 to make anchoring engagement with the body. A

2 plurality of spaced lugs llare struck up from the body in pairs extending transversely of the body in substantially parallel relation. By striking up the lugs 11 openings 12 are left in the body separated by crossed bridges 13, 13 integral with the back. The lug strap 14 is formed from a strip of metal and bent to shape having depending legs 15 provided with angular feet 16. The feet 16 and the lower part of the legs 15 are provided with slots 17.The legs are also provided with shoulders 18. The feet are not formed on the legs until after the lug is assembled with the back. The slotted legs are inserted in the openings 12- and the shoulders 18 are engaged with the top of the lugs 11, after which the feet are bent to interlockingly engage the back. The slots 17 engage the bridge 13 and the upper ends of the slots rest upon this bridge. The lug strap is'thus rigidly supported on the support lugs 11 so that shocks, jars and blows applied to the lug will be transmitted through the support lugs to a considerable area of the back. The lug strap is interlockingly engaged with the back and its bridge 13 to hold the strap rigidly in fixed position. When the body is cast on the back the body metal will run through the openings 12 and fill the space between the support lugs of each transverse pair and partly fill the lug strap at 19 to form a solid attaching lug construction which will resist the stresses and strains, shocks and jars to which an attaching lug is subjected in service.

I have shown the invention in a flanged driver type of brake shoe but it may be adapted to other shoes and I reserve the right to make any changes that may be necessary or desirable for adapting the invention to other types of shoes or for other purposes within the scope of the following claims:

I claim:

1. A brake shoe comprising a body having a reenforce back embedded therein, spaced support lugs struck up from the back in pairs extending transversely of the back and leaving openings in the back, and a lug strap having parts projecting through said openings and engaged with the under side of the back and also having shoulders engaged with said lugs.

2. A brake shoe comprising a body having a reenforce back embedded therein, spaced support lugs struck up from the back in pairs extending transversely of the back and leaving openings in the back separated by crossed bridges, and a lug strap having parts projecting through said openings and engaged with the under side of the back and also having shoulders engaged with said lugs.

3. A brake shoe comprising a body having a reenforce back embedded therein, spaced support lugs struck up from the back in pairs extending transversely of the back and leaving openings in the back separated by crossed bridges, and a lug strap having slotted legs engaged with said openings and straddling one of said brides, and having feet interlockingly engaging the back, and shoulders on said lug strap engaging said support lugs.

4. A brake shoe comprising a body having a reenforce back embedded therein, spaced support lugs struck up from the back in pairs extending transversely of the back and leaving openings in the back separated by crossed bridges, and a lug strap having slotted legs engaged With said openings and straddling one of said bridges, and having feet interlockingly engaging the back, and shoulders on said lug strap engaging said support lugs, the body metal running through the openings during the casting operation and filling the space between the support lugs of each pair and partly filling the lugstrap. a v ALBERT NELSON.