US1821069A

US1821069A - Brake shoe

Info

Publication number: US1821069A
Application number: US460035A
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

. NELSON BRAKE SHOE Filed June 9. 1930 sept. 1, 1931.

Y shoe on the line 3--3 of Fig. 2.

Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE ALBERT NELSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE BRAKE SHOE Application filed .Tune 9, 1930. Serial No. 460,035,

This invention relates to lrailway brake shoes and more particularly to the centerfastening type and ithas for its objectto provide a solid and substantial construction for the attaching lug c I have illustrated the invention in a flanged shoe inthe accompaying drawings and referring thereto.

Fig. 1 is a plan view of the reenforce back.

Fig. 2 is an edge view of the back with the lug strap engaged therewith.

Fig. 3 is a transverse sectional view of a Fig. etis a transverse sectional view of a shoe on the line 4 4 of Fig. 2.

Fig. 5 is a detail perspective view of the ylug strap.

Referring to the drawings 6 is the reenforce back which is embedded in the body 7 of the shoe at the back thereof during the casting operation, the back being provided with openings 8 to receive body metal for anchoring the body to the back. The back has two side slots 9, 9 extending transversely and in parallel relation, each slot having a tongue l0 projecting inwardly from its outer side edge and spaced from the end edges of the slot. The lug strap 11 is formed from a strip of metal Vand has depending legs 12 and angularly disposed feet 13, the feet being bent outward after the lug strap is assembled with f the back. There is an integral bar 14 on the back between the slots 9, 9 and the lower ends of the legs including the feet of the lug strap have slots 15 to engage this bar. The side edges of the lug strap iit in the recesses 16 formed in the outer side edges of the slots y9, 9 between the tongues 10, l0 and the end vedges of the slots.

Thebody metal flows through the slots 9, 9 during the casting operation and partly fills thelug strap. The lug strap is rigidly mounted on and interlocked with the back to form a substantial and solid construction which ywill enable the lug to resist the stresses and strains, shocks and jars to which it is subjected in service.

The lug strap is interlocked with the back in a rigid manner so that it will not be easily 'twisted to a distorted position or pulled loose from the back. The body metal runs through the slots during the casting operation and back and assists in forming a solid construction for the base of the attaching lug.

I have illustrated the invention in 'one type of brake shoe but it is adaptable to other types and I reserve the right to make any changes that may be necessary or desirable in using the invention in 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 reen-torce back embedded therein, said back having parallel slots extending transversely thereof and an integral bar separating said slots, and a lug strap having slotted legs engaging said slots and bar in the back, the lower ends of said legs being bent angularly beneath the back to make interlocking engagement therewith.

2. A brake shoe comprising a body having a reenforce back embedded therein, said back having parallel slots and an integral bar separating said slots, tongues projecting inwardly from the outer edges of the slots and spaced from the end edges thereof and forming recesses, and a lug strap having slotted legs adapted to engage said slots and recesses and bar in the back, the lower ends of said legs being bent angularly beneath the back to make interlocking engagement therewith.

3. A brake shoe comprising a body having a reenforce back embedded therein, said back having parallel slots and an integral bar separating said slots, tongues projecting inwardly from the outer edges of the slots and spaced from the end edges thereof and formlng recesses, legs adapted to engage said slots and recesses and bar in the back, the lower ends of said legs being bent angularly beneath the back to make interlocking engagement therewith, the body metal running through the slots during the casting operation and over the bar and tongues and partly lilling the lug strap.

ALBERT NELSON.

and a lug strap havingslotted