US887243A - Brake-shoe. - Google Patents

Description

No. 887,243. I PATENTED MAY 12, 1908.

A NORA/7 No. 887,243. PATBNTED MAY 12, 1908.

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UNITED STATES PATENT oF-mon J OSEPH D. GALLAGHER, OF GLENRIDGE, NEW JERSEY, ASSIGNOR TO EDWARD H. FALLOWS,

TRUSTEE, OF NEW YORK, N. Y.

BRAKE-SHOE Specification of Letters Patent.

Patented May 12, 1908.

Application filed October 19, 1907. Serial No. 398,148.

kind or style thereof comprising a cast 11'011 body and a steel back, theobject being to provide a shoe wherein the cast iron body shall consist of two parts or sections, and the steel back adapted to be easily and readily attached thereto before being subjected to service, and detached therefrom after being worn down.

With these and other ends in view, the invention consists in certain. novel features of construction and combinations of arts, as will be hereinafter fully describe and pointed out in .the claims.

In the accompanying drawings, Figure 1 is N a 'view in perspective of a detached steel back. Fi 2 is a similar view of the cast iron body. Fig. 3 is a view in side elevation of the back showing the same prior to its attachment to the cast iron body. Fig. 4 is a longitudinal sectional view taken on the line 44 of Fig. 5, after theparts have been assembled. Fig. 5 is a top plan view of the same. Fig. 6 is a view in cross section taken on the line 66 of.Fig. 4. Fig. 7 is a bottom plan view of the two halvesor sectionsof a modified form of the body of the 'shoe. Fig. 8 is a sectional view of the same attached to the removable back, and-after being worn down in service. Fig. 9gis a sectional view of a modified form of the shoe wherein the worn down sections are secured to a new bod Fig. 10 is a sectional view taken on the e 1010 of Fig. 9. I

Referring to the drawings, A-A represent thetwo halves of the body divided transversely at the center, said body being preferably made of cast iron, or if desired, the same may be composite in character, that made of relatively hard and soft metals, to secure wearing and frictional qualities, and as shown inFigs. 4 and 5, may be rovided with the inserts B in the wearing ace thereof.

On the back of each half A of the cast iron body, is formed a lug or boss C, preferably triangular in shape, the edges of which are undercut, in order to afiord a locking means for the plated); This plate D is made of comparatively heavy steel plate, say from one-eighth to one-quarter of an inch in thickness throughout its length, with the exception of the central portion (1 which metal constituting the central portion of the plate, is designed to form the key-lug for attachment of the shoe to the brake head, as hereinafter described, this portion of the plate, by elongation or otherwise, being preferably made about one-eighth of an inch in thickness.

In the plate or back D are formed the edges of said lugs when the parts, are assembled. The ends e of the plate D are preferably tur-ned upwardly,in order to form stops against which the ends of the brake head rest, and to receive the end thrust thereof. These 0 enings c in the plate D are se arated by the tfiin portion of the metal dwhic openings in the completed back, as illustrated in Fig. 4, form a passage-way through the keylug for the entrance of the key (not shown) for locking the shoe to the brake head.

In assembling the arts, the back D which is curved in its engt to conform to the curvature of the shoe, has its ends sprung apart,

as illustrated in Fi 3, the bend occurrm at the center of theback where the met is comparatively thin. The two halves A of the shoe are then assembled withthe back, that is, the-bosses C are projected through the openings 0 and forced toward the outer ends of the back until the undercut edges of said bosses tightly lock with the beveled edges of said openings. The back or plate 1s then allowed to spring back'to. its normal shape, causing the Inner ends of the sections A o the body to come together-and closely 'abut," asillustrated in Fig. 4 of the drawings.

been placed in position in parts or portions of t e cause the plate to assume its normal shape.

the same thickness as the, other portions of the back, in which instance it may be necessary or advisable to ap ly, ressure to certain ack, in order to after being assembled with the sectional body, rather than to rely upon the inherent s ring in the metal to accomplish'this end.

urthermore, if desired, the upwardly turned ends e of the back may be omitted, theend stops being formed by the castmetal of the shoe, as isordinarily done, and as will be un-' derstood without further illustration or description.

As illustrated in Figs. 7, 8, '9, and 10 of the drawings, instead of forming the bodyof the shoe with insertsas illustrated in Figs. 4 and 6, I may provide the wearing surface of each half or section F of the body, with the undercut recesses G, of an outline and size to receive and retain the bosses 0 formed on the back of the sections, as before described, so that after the body of'theshoe: has been worn down in service, as illustrated in Fig. 8, the back D maybe removed therefrom, as before described, and the two worn sections F secured in the wearin surface of a new body A, as illustrated in ig. 9, the parts being held to ether by reason 'of the undercut bosses fitting 1n the undercut recesses-G. To this body, com rising the new and old sections, is attached the removable back D in the manner before described, and when this shoe in turn has been worn down in service, as illustrated in Fi 8, the worn down sections are removed om. the back and again utilized in the manner above described.

It will be understood from the foregoing that in this way the entire body of theshoe is utilized in service, there bein no waste or scrap as is now the case wit many shoes wherein the back and body are permanently united. I a I Having fully described my invention, what I claim'as new and desire to secure by Letters Patent, is

1. A brake shoe consisting of a sectional body, and a back madejof a single piece of metal and removably secured thereto, substantiall as described.

2. A rake shoe comprising a cast iron body divided transversel at the center, and

a one-piece back remova 1y secured thereto,

substantially as described.

3. A brake shoe comprising a body and a back removably secured thereto, sa d back being provided with a key-lug of comparavided with a key-lug of com aratively thin metal, substantially as descri ed.

5s A brake shoe comprising a sectional body, each section being provided with locking-means, and a one-piece back enga 'ng saidlockin means, substantially as descri ed. 6. A brafise shoe comprising a body formed with an'underc'utiboss on the'back thereof,

and a back removably secured to said boss and formed with a key-lug of com aratively thin metal, substantially as descri ed.

A brake shoe comprising a cast iron body divided transversel at the center, each half. being provided wit an undercut boss thereon, and a one-piece back provided with openings in whichsaid bosses fit, substantlally as described.

8. -A brake shoe comprising a cast iron body divided transversely at the center, and each half provided with a trian ular boss, and a one-piece back provided wit openings stantia' 1y as described.

' 9. A rake shoe comprising 'a sectlonal cast iron body and a, one-piece'back removin which said bosses fit and formed with a I .key-lu of comparatively thin metal, subably secured thereto, the ends of said back belng upwardly turned, substantially as described.

' 10. A brake shoe comprising a bod divided transversely at the center and a ack with bosses on the backs thereof, an recesses in the wearing surfaces thereof, and a back made of a single piece of metal removably secured to sai scribed.

13. A brake shoe comprising a body divided transversely at the center, the sections being provided with bosses on thebacks and recesses on the wearing surfaces thereof, and a one piece back removably secured to said sections, substantially as described.

14. A brake shoe comprising a sectional body, each section thereof; belng rovided face, and a one piece back removably secure to said sections, substantially as described.

sections, substantially as dewith locking means on its back an wearing 15. A brake shoe comprising a body di- Signed at New York, borough of Manhatvided transversely'at the center, each section tan, 1n the county of New York, and State of 10 being provided with locking means on its New York, this 18th day of October, A. D. back and wearing face, whereby to lock the 1907.

5 back of one section to the face of another, JOSEPH D. GALLAGHER.

' and a one piece back adapted to engage with Witnesses:

the locking means on the backs of said sec- M. VAN NORTWICK,

tions,substantia11y as described. JOHN B. WHITE.

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