US747912A - Brake-shoe. - Google Patents

Description

No. 747,912. 'PATENTED DEC. 22, 1903. I

J. D; GALLAGHER,

BRAKE SHOE.

APPLICATION FILED P213124, 196s. no MODEL.

wrrfi asses UNITED STATES Patented December 22, 1903.

JOSEPH DOUGLAS GALLAGHER, OF GLENRIDGE, NEW JERSEY.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 747,912, dated December 22, 1903. Application filed February 24, 1903. $erial No. 144,743. (No model.)

.To all whom it may concern.-

Be it known that I, JOSEPH DOUGLAS GAL- LAGHER, a citizen of the United States of America, residing at Glenridge, in the county:

of Essex and State of New Jersey, have invented certain new and useful Improvements in Brake-Shoes, of which the following, taken in connection with the accompanying drawings, is a specification. I

My invention relates especially to brake shoes forars, and has for one of its objects the utilization of the back portion ofa worn shoe which is now usually discarded; which object[ accomplish byproviding for a renewal of the shoe by casting a separate wearing sole upon the back or body portion. A further object of my invention is a construction of shoe with a separately cast wearing sole attached by retaining devices designed to be exposed by the natural wear of the brake,

whereby a new wearing sole may be cast thereon, as hereinafter described.

These objects, as well as other advantages, as may hereinafter appear, I attain by means of a construction which I have illustrated in preferred forms in the accompanying draw-,

It has heretofore been the custom, when a brake shoe is worn, to discard it entirely. This results in a great waste of material,since the uuworn rear portion of the shoe is still in 7 good order, and is the most expensive part,

being usually provided with a steel backing.

I propose to utilize this unused portion over and over by providing it with means to at.

: devices for the separately cast sole are preferably made integral with the back or body portion, and are so designed that as the sole wears 06 the retaining devices are exposed, when the old fragments may be easily knocked off and a new sole cast on the body, as originally. Thus,rfor example, in Figure 1 the body, indicated by the refence numeral 1, has the projecting recessed lugs 2, and is provided with a steel backing 3, and an eye-stud 4, having an aperture 5, to receive the attachiug'pin of the brake head. The body may be notched in the ends as at 9, for securing the sole 6, from sidewise displacement, while the lugs 2, extend laterally quite through the sole, and are made with non-parallel sides so that the fragments between them may easily be knocked out sidewise. By this device, when the sole is worn down nearly to the line of the tops of lugs 2, the fragments at the ends may be knocked off vertically,when the fragments between the lugs 2 may be driven out sidewise, leaving the body 1 ready for a newsole.

In the modified construction of Figures 4 and5, the sole is attached by providingthe back 1 with perforations 7, into which the metal of the sole may runin casting, and form a retaining neck 7, and a head 8, in

the space left in the steel backing, as shownv course, be provided to retain the new sole,

cast thereon.

In Figure 6 I show another form, in which the recessed lug 2*, corresponding to lugs 2 in Figure 1, covers nearly the entire face of the body of the shoe and is recessed all around.

When the sole wears down to expose this ing, the thin fragments around the rim may be broken off and a new sole'cast on, as will be plain Numerous modifications may readily occur, the essential feature of thedevice being that the shoe proper and its wearing sole are made two distinct parts, and the sole is cast on and is renewable when worn out. The sole may be cast on in such a Way as to weld it to a plain body portion, as described in my process application referred to above.

By these constructions the most valuable part of the brake shoe may be used over and over indefinitely, and a great saving of material and labor is attained.

Having thus described my invention and its use and illustrated preferred forms of its construction, what I claim, and desire to secure by Letters Patent, is the following:

1. A brake shoe consisting of two parts, a rigid body portion and a wearing sole separately cast thereon 2. A brake shoe comprisinga back or body portion consisting of a partly worn brake shoe and a wearing sole east upon the face thereof, substantially as described.

3. A brake shoe comprising a body portion, a separate wearing sole permanently fixed thereon and designed to allow of removing the fragments when worn and casting on of a new sole repeatedly, substantially as described.

4. A brake shoe com prisingacast body portion, provided with retaining devices, and a separate renewable wearing sole cast on said back portion and held in place by said retaining devices.

5. A brake shoe havinga body portion and a wearing sole separately cast thereon, said body portion having means to retain the sole, which retaining means are capable of being exposed by the wearing off of the sole, without being itself. destroyed by the Wear.

6. The combination in a brake shoe of a body portion provided with retaining lugs designed to be exposed by wear of the shoe, and a wearing sole cast thereon and held in place by said lugs.

7. The brake shoe consisting of a body portion having projecting recessed lugs and a wearing sole cast on and retained by said lugs, wherebywhen the sole is worn thelugs become exposed, the unworn fragments may be removed, and a new sole may be cast thereon, substantially as described.

8. A brake shoe comprisinga back or body portion consisting of a brake shoe partly worn in service, having retaining devices thereon and a wearing sole cast upon the face of said body portion and attached thereto by said retaining devices, substantially as described.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOSEPH DOUGLAS GALLAGHER.

Witnesses:

WARREN L. JAOOBUS, A. E. CUMMING.

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