US995149A - Brake-shoe. - Google Patents

Description

H. JONES.

I BRAKE SHOE. APPLIOATION FILED HAR- 9,1911- Patented June 13, 1911.

Inventor:

HARRY JONES, or SUEFEBN, NEW YORK, ASSIGNOB 'ro EDWARD H. FALLOWS, or NEW YORK, N. Y.

BRAKE-SHOE.

eoaiae.

H Specification of Letters Patent. Patented June 13,1911.

Application filed March a, 1911. Serial No. (313,218.

. My invention relates to brake shoes designed, for use uponrailway cars and of the type wherein a cast metal body portion ispro- Wide'd' with a'strengthening' and: stiffening 'baclc'o-f wrought metal embedded in'thebody portioniof'the shoe, and the object thereof is to provide'an improved form of back stiff ening orstrengthening element which will impart'greater strength to the shoe than has commonly been attained in the use of prior forms 'of. back strengtheners; to provide a back strengtliener which will hold the parts of the'shoe together should the same become broken in'use more effectively than has commonly been the case; to provide a back 'st-rengthener which may be readily and .cheaply manufactured from a common form' of stock at a minimum of expense and effort; andto'provide such other improvements in and relating to brake shoes of the type referred to as,are hereinafter disclosed.

' With the objects above enumerated in view, my invention consists in the improved brake 'shoe illustrated in the accompanying drawing, described in the following'specifi cation and particularly claimed in the clauses of the concluding claim, and in such modifications thereof as will be obvious to those skilled in the art to which my invention relates.

In'the drawing accompanying and forming a partof this application; Figure 1 is a view showing my improved brake shoe in ,side elevation, a part of the body portion being broken away, to better show the stifff ening member; Fig. 2 is a view showingthe shoe in' plan, this View showing the rear surface or back of the shoe; Fig. is a Iview showing a section upon a transverse plane indicated by the line 3, 3, Fig. 2; Fig.

4; is a view similar to Fig. 2 but showing a modified form of back stiifening element; Fig. 5 is a view taken .upon a transverse plane indicated by the line 5, 5, Fig. 4; Fig.

v6 is a view similar to Fig. 2 but showing another form of back stiffening element; and Fig. 7 is a view showing a section upon a transverse" plane indicated 'bythe line 7, 7 'Fig. 6.

- In the drawing, 8 represents the body portron of the shoe, the same being formed preferably from castiron, the composition of 'which will be such as to obtain maximum efficiency of the shoe when in use, and 9, '9 are wrought metal back stifiening or strengthening members embedded in the cast metal body portion and extending from the back of the shoe=about one third of the way through the same toward the front or wearing face of the shoe; said stiifening members being formed preferably from a mild steel or wrought iron bar or ribbon bent or doubled upon itself as shown, so as to extend a plurality of timos'longthwise of the shoe, thus providing a plurality of separate segments extending parallel with one another and arranged edgewisewith reference to the rear'surface or back of the shoe; the

said stiffening members being curved longitudinally so as to conform, approximately, with an arcof the same curvature as the wheel with which the shoe is to be used. '1 preferably provide two such strci'igtheniup members as are above described, the same being located side by side in the rear portion of the finished shoe, as shown in "Figs, 2 and 3. These stiffening members are provided with openinqs 10 at their middle portions, the openings in the separate segments being in line when the stiffening member is'ben-t and caused to assume its final form; and 11 is a lug through which the brake shoe may be secured to a brake head, said lug beingformed from wrought metal and being of inverted U form with outwardly bent. portions 12 at its lower end which extend through the openings 10 aforesaid in one or more of the separate segments'of the stiffening members 9. r

In making my improved'brake shoe'the stiffening m embers 9 and the securing lug 11 are, properly assembled and placed in the mold in which the shoe is to be formed, after which the molten cast metal of the body portion is poured thereinto, whereupon theback strengthening members 9 and the securing lug 11 become embedded in the body portion of the shoe; and, in order to more 'efi'ectively secure the said strengthening members in place and unite the portions of the body.

flows, thus securing a strong and permanent union between the strengthening member and the cast metal body portion of the shoe.

In Fig. 4, I have illustrated the use of a corrugated bar or ribbon of wrought metal to form back stiffening members it, the same being embedded in the cast metal body portion 15 of the shoe in the same manner as hereinbefore disrlosedf This form of strengthening back while somewhat more difiicult to form than the form first disclosed, is in some respects to be. preferred, as

-metal bent, or doubled upon itself in a way similar to the bark stitl'ening members 9 and embedded in the body portion as the shoe is poured, the ribbonaml body portion being simultaneously worn away as the shoe is used. In Figs. 6 and 7 l have illustrated a back stitl'ening member 18 formed in a single pieee and extending throughout the entire area of theshoe. The said member is eorrugated in a way ditl'ering somewhat from the corrugated strip shown in Fig. l, and

' said member 18 is prorit'led with registering openings to receive the ends 12 of the securing lugs 11, the same as in the forms of my brake. shoe hereinbefore described. This form of my improved brake shoe is provided with an insert it) of any form as above referred to. v

The bark stitl'ening member 5) being arranged edgewise with reference to the rear surface or back of the shoe imparts great strength thereto; and, because of the fact. that the bark stitl'ener extends into the body portion of the shoe much farther than has usually been the case with back stitlenersheretofore in use, a shoe is provided in which should the same become broken in use the parts will be held togethermore etl'eetively than if a comparatively thin stitl'ener, and one extending but slightly into the body portion of the shoe were used.

llaving thus described my invention, I claim and desire to secure by Letters Patent: 1. A brake shoe comprising a east. metal body portion; a bark-emlwdded therein and comprising a "at strip of metal bent or -of February, A. D., 1911.

doubled upon itself and extending a plurality of tunes longitudinally of the sho and arranged edgewise with reference to the rear surface of the shoe; and means independent of said strip, and in engagement therewith, whereby'the brake shoe may be secured to a brake head.

2. A brake shoe comprising a cast metal I body portion; a back embedded therein and comprising a flat strip of metal bent or doubled upon itself and extending a plural- V ity of times longitudinally of the shoe and arranged edgewise with reference to the'rear surface of the shoe; and a lug independent 95 of said strip and in engagement therewl whereby the brake shoe may be secured to a. brake head.

3. A brake shoe comprising a cast metal body portion; a wrought metal back em- '80 bedded therein and comprising a strip of metal bent or doubled upon itself and extending a plurality of times longitudinally of the shoe and arranged cdgewise with reference to the rear surface of the shoe; said strip being provided with an opening; and a lug the inner portion of which is embedded in the body portion of the shoe and which portion extends through the opening in said strip. '90

at. A brake shoe comprising a cast metal. body portion; a back embedded therein and comprising two strips of metal each bent or doubled upon itself and each extending apl-urality of times longitudinally of th'eshoe,

said strips after having been bent as aforesaid being arranged side by side and edgewise with reference to. the rear surface of the shoe; and a tug engaging both said strips and whereby the shoe may be secured to a 1th brake head.

A brake shoe comprising a cast metal body portion; a back embedded therein and comprising two stri s of metal each bent or doubled upon itsel said strips being arranged side by side an edgewise with reference to the rear surface of the shoe, each of said strlps being provided with a plurality of openings which in register after the strips are bent; and a la the inner portion of which is embedded the body of the shoe and which portionextends through the registering openings 1 aforesaid in said strip. U H

Signed at Sufi'crn, in the county of Rock} land and State of New York, this 27th day HARRY J ONES.'

Witnesses EUGENE M. GREEN, (3. (l. MoRoAN,

and 'each extending a lo plurality of times longitudinally of the shoe:i

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