US1132944A - Brake-shoe. - Google Patents

Description

H. JONES.

BRAKE SHOE.

APPLICATION FILED FEB. 4,1915.

1,1 32,944. Patented Mar. 23, 1915.

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HARRY JONES, OF SUFFERN, NEW YORK, ASSTGNOR TO AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed February 4, 1915. Serial No. 6,009.

shoe, and when so positioned, the flange as well as the body portion of the shoe will be reinforced and strengthened, and all likelihood or danger of the flange becoming broken and separated from the body of the shoe will be eliminated.

Other features and objects reside in the provision of a sheet metal backing or reinforcement for a cast metal brake shoe, so designed and embedded within a shoe as to allow the shoe to be almost completely worn away, without danger of the flange of the wheel coming into contact with, and being scored or injured by, the shoe reinforcement or backing. The attainment of this latter mentioned object provides also, that the flange will be most securely tied to the body of the shoe and allows the flange to wear well up within the shoe and to closely approach that condition wherein the flange is completely worn away and separated from the shoe.

Other objects and advantages will apclearly disclose the various details of ar-, ,rangement and construction: Fig. 2 1s a top plan view of the foregoing; Fig. 3 is a crosssectional view taken on the line 3-3 of Fig. 1; Fig. 4 is a view in perspective of the sheet metal backing after it has been bent to its final form and ready for insertion within a mold; Fig. 5 is a plan view of the sheet metal blank from which the backing is formed.

Referring to the several views wherein similar reference numerals designate corresponding parts throughout, the rein-force ment or backing is disclosed in detail in Fig.

4, wherein a pair of body arms 6 project from and are carried by a connecting arm 7.

angles to the general plane of the body arms and is in turn formed integral with or carried by a top plate 8,'the said top plate and connecting arms, constituting what is termed a'loop, due to its position within the brake shoe lug as will hereinafter appear.

Carried by from the remote extremity of the top plate 8, are the flange arms 9, the samebeing directly connected to the said'top plate without any intermediate connecting arm such as that employed by the body arms and herein designated by the numeral 7. The resulting formation provides that the flange arms, while extending substantially parallel to and conforming to the configuration of, the body arms, plane than the same, e. areelevated thereabove and are thus adapted to be embedded in and reinforce the body and flange of a cast brake shoe in an advantageous and novel manner.

The backing is preferably formed of sheet steel such as illustrated in blank in Fig. 5, which, as therein disclosed, is provided with the medial slits 11 and 12 extending well toward the center of the blank, but which slits, it is to be noted, are of unequal length, 11 being the longer. The nn-. slitted portion 13 of the blank, and which subsequently forms the top plate 8, is accordingly located to one side of the trans verse center of the blank- The blank is then bent to form the-connecting. arm 7 and oppositely extending body arms 6. In the formation of the flange arms v9, the bifur cated portions defined by the slit 12, are bent sharply and upwardlyagainst the top plate- 8, so as to contact therewith. and are simultaneously twisted through 90, so as to extend in opposite directions and lie substantially parallel to. but in a different general plane than, the body arms 6. The backing,

and projecting oppositelyj The said connecting arm extends at rightlie in a different general as thus formed, is placed within a mold and a shoe cast therearound, the backing thus becoming anchored or embedded within the cast metal. The backing is so positioned and arranged, that the arms 6 extend along the back of the shoe body 15, while as the arms 9 extend along the back of the shoe flange and top plate are embedded within the lug 17 and reinforce the same in the customary manner.

The flange arms 9 are positioned directly above and extend in the length of the flange groove 18, it being noted in this connection, that the connecting arm 7 of the backing is substantially equal in height to the spacing of the back of the shoe flange 16 above the shoe back 15. The body and flange arms are provided with suitable means to increase the holding action between the cast metal flange shoe and the sheet metal of which the backing is constituted. Such means may partake of various forms and has been illustrated in the accompanying drawings as being semi-circular notches 6', into which the cast metal is adapted. to flow and thus increase the anchorage of the steel backing. WVith the shoe so reinforced, it may be worn almost entirely away without danger of the flange breaking and becoming detached from the body of the shoe, due to the thin or relatively small amount of metal which is then present between the flange groove 18 and the corner 19 of the flange and body of the shoe. A further advantage of so positioning the arms which constitute the reinforcement or backing for the shoe, lies in the fact, that there is no danger of the flange of the wheel coming into contact with the shoe reinforcement as has heretofore been the case wherein shoes have been constructed with the arms 9 located upon the same general level as the arms 6, it being the customary practice to provide a pair of spaced parallel arms similar to the arms 6, and with one of the same disposed adjacent the corner 19 between the flange and body of the shoe. Such practice has resulted in the occasional scoring and injury of the flange of the wheel, and also affords little or no protection against the cracking and detach-v ment of the shoe flange.

WVhat I claim is 1. A backing for cast metal brake shoes comprising connected, spaced, substantially parallel body and flange arms, the latter being located above the general plane of the former.

16. The connecting arm.

2. A backing for cast metal brake shoes comprising body arms, a connecting arm.

carried thereby and pro ecting thereabove, a top plate carried at the upper extremity of said connecting arm, and flange arms carried at the remote extremity of said top plate and lying in a general plane above the general plane of the said body arms.

3. A metal backing for cast metal brake shoes comprising oppositely extending body arms, an upwardly extending connecting arm carried thereby and extending at right angles to form'a top plate and oppositely extending flange arms carried at the remote extremity of said top plate and bent into contact with the lower surface of the latter, the said body arms and flange arms lying in different general planes.

t. A blank for the formation of backings for cast metal brake shoes comprising a wide, thin, elongated strip of metal, said strip provided with medial slits extending to unequal distances therein.

5. A cast metal brake shoe including a body portion and flange, a reinforcing backing anchored therein and including oppositely extending body arms embedded within the body and located adjacent the back of said shoe, a connecting arm carried by said body arms projecting above the back, and embedded within the lug, of said shoe, a top plate extending transversely of said shoe, and oppositely extending flange arms carried by and located at the remote extremity of said top plate and embedded within and located adjacent the back of said shoe flange.

6. A. brake shoe comprising a cast metal body and flange, a reinforcing backing therefor including body arms embedded within the body of said shoe, an upstanding connecting arm carried by sail body arms, a top plate carried by said connecting arm and extending transversely across said shoe, and flange arms located at the remote extremity of. and carried by the said top plate, anchored within the flange of said shoe, located adjacent the back thereof and extending in the length of the flange groove.

Signed at New York, borough of Manhattan, in the county of New York and State of New York this Qnd'day of February A. D. 1915.

HARRY" JONES.

Witnesses:

A. V. "WALSH, GEORGE E. Coon.

copies of this patent may he obtained for five cents each, by addressing the Commissioner of Barents,

' Washington, D. C.

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