US995049A - Brake-shoe. - Google Patents

Description

H. P. WINGERT L HK JONES.

BRAKE SEDE.

APPLICATION ULI-3D PEB.10,1911.

Patented JunQ 1s, 1911-.V

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HowARD r. WINGERT, or ELIZABETH,

NEW YORILVASSIGNORS T EDWARD H. FALLOWS, F NEW YORK, N. Y.

ERAKEsHoE. l

l Specification of Letters Patent.

Patented June 13, 1911.

Application file d February 10, 1911. Serial No. 607,788.

To all whom "it may concern:

B e it known that we, HOWARD P. WIN- GERT, a citizen of the IIgilted States, and a -residentof Elizabeth,-"fm the county of Union and State of New Jersey, and HARRY JONES, a resident of Suffern, in the county of Rockland and State of New York, have made and invented certain new and useful Improvements in Brake-Shoes, of which the y following is a specication.

Our invention relates to an improvement in brake shoes, and more 'particularly to that kind or type thereof comprising a body andv inserts of relatively hard and soft metal, whereby to secure a wearing face composite in character, the object of the invention being to improve upon the construction of shoe generally known and referred to as the Diamond S shoe, (wherein the insert is' formed from a bundle, or several layers of expanded metal), by materially `reducing the cost thereof, and at the same time im;t parting to the completed shoe such addi'- tional strength as will insure the holding together of the sections of the body should the latter become cracked or fractured in service.

A further object of the invention is to avoid any and all danger of the burning or oxidation of the insert during the pouring of the molten body metal around it during the process of casting, while at the same time preserving all the qualities and efficiency characteristics of the Diamond S pointedout in the claims.

In the drawing accompanying and forming-a part of this specification, and wherein our improved brake shoe is illustrated :Fig-

ure l is a view showing our improved brake` shoe upon a section indicatedeby the line 1 1", Fig. 2; Fig.2 isa view showing a section upon a plane extending longitudinally of the shoe as indicated by the line 2 2, Fig. l; Fig. 3'is a view similar t0 Fig. 1, but showing a modified form of shoe; Fig.

4 is a view similar to Fig. 2, but showing" verse plane,

'of the cast several another form of shoe; Fig. 5 is a view showing the shoe shown in Fig. lupon a transand Fig. 6 is a View showing the shoe shown in Fig. 4 upon a transverse plane.

-In the drawing, 7 is the body portion of our improved brake shoe, the same being formed fromv cast metal, and preferably from cast iron, selectedwith reference to securing a maximum braking action with minimum wear of the shoe.

8 is a strip or ribbon of wrought iron, mild steel, or similar material bent or doubled upon itself so as to provide a plurality of portions disposed adjacent one another or lying side by side, and extending,

preferably, longitudinally of the brake shoe, so that the wearing face of the shoe is made up of the cast metal body portion and the edges of 'the several parts of the strip 8. The strip 8 may be plain, as shown in Fig. l, so thatthe several parts thereof are parallel, or corrugated as shown in Fig. 3, in which case the strip is sov bent and arranged as to divide the cast metal body of the shoe into lenticular portions or areas such as 9, so that the tread of the wheel against which the shoe bears will be subjected to thaaction of both the cast metal Y and the edge of the stri whereby the wheel grooves therein avoided. -The strip 8.- is preferably provided with a vseries of holes or openings 1,0, spaced along the strip and through which the cast metal of thebody portion flows as by the insert formed by the lstrip is more securely held in position, and transverse strength imparted to thesho'e, the portions body upon opposite sides of the parts of thestrip being tied together by the portions thereof which extend through the holes. I'

In the embodiment of our invention illustrated in Figs. l, 2 and 3,ia single strip of metal embedded in the body portion of the shoe.` lItv is, however, sometimes desir- 'able to provide two or more strips located one over the other as shown' at 1,1, 12, Fig. 4, the strips being preferably bound together.

NEW JERSEY, AND HARRY Joni-1s,l or sUrEERN, 7

of the body portion `is worn uniformly and the formation of ioo e ture, as Will be understood, and the same placed in the mold in Which the shoe is to be formed; the cast metal of the body portion is then poured around it, the insertthus becoming securely embedded and anchored in the -body portion of the shoe.

From the foregoing it will be understood that by reason of the relatively large amount of metal contained in the strip or ribbon comprising the insert, the danger of burning or destroying the same While pouring the molten body metal around it is avoided, such destruction often occuring 1n the case of the eXpandedmeta-l insert, by reason of the finely divided metal comprising the same. p Furthermore, itwill be noticed that the distribution of the metal comprising the insert, especially in its corrugated form, is-A verysimilar to that of the expanded metal insert, in that the alternate bends, folds or corrugations of tie metal strips approach each other, and the intermediate portions separated, in contradistinction to arranging the bends or folds of the corrugated strips to lie parallel.

-In the construction of shoes as above described, We have found that While preserving all of the valuable characteristics. of the Diamond S insert, the cost thereof is materially reduced, While atthe same time the insert in the form of a iattened strip or ribbon of metal adds materially to the strength of the finished shoe, and overcomes any 'and all danger of the sections or fragments of the shoe separating, should it become cracked or fractured in service.

Havingthus described our invention, we claim and desire to secure by Letters Patent:

1. A brake shoe comprising a' body portion formed from cast met-al, and a continuous' flat strip or ribbonbent or doubled upon itself so as to provide a plurality of portions disposedadjacent one another, said strip being corrugated and embedded in the@ body portion of the shoe.

2. A brake shoe comprising a body p0rtionformed from cast metal, and a continuous strip or ribbon bent or doubled upon itself and extending a plurality of times longitudinally of the shoe, said strip being embedded in the body portion of the shoe and located adjacent the Wearing face thereof, so that the body portion and strip are simultaneously Worn away when the shoe 1s in use.

3. A brake shoe comprising a body portion formed from cast metal, and `a con-.-

tinuous strip. or ribbon bent or doubledupon itself so as to provide a plurality of portions extending longitudinally of the shoe, said strip being embedded in the bodyportion' of the shoe and located adjacent the Wearing face thereof, so that the body portion and strip-are simultaneously Worn away when the shoe is in use.

4. A brake shoe comprising a tion formed from cast metal, andV a continuous strip or ribbon bent or doubled upon itself and extending longitudinally of the shoe, vsaid strip being corrugated and having a series of holes spaced along its length and embedded inthe body portion of the shoe.

5. A brake shoe comprising a body portion formed fromv cast metal, and ancontinuous strip or ribbon bent or doubled upon itself so as to provide a plurality of portions 'disposed adjacent one another 'and Which portions extend longitudinally of the shoe, said strip having a series of holes spaced along its length, and embedded inthe body portion of the shoe.

6. A brakeV shoe comprising a body portion formed from cast metal, and a continuous strip or ribbon bent or doubled upon itself so as to provide a plurality of portions disposed adjacenty one another, said strip being corrugated and embedded in the body portion of the shoe, the position of adjoining portions thereof being such that the face of the shoe-.is divided into a plurality of lenticular areas by said strip.

7. A brake shoe formed from cast metal and the Wearing face of which is divided into a plurality of lenticular areas, and a continuous strip or ribbon embedded in said shoe and separating said areas from one another.

8. A brake shoe of the character described, comprising a body portion, and an insert embedded therein, said insert comprising a plurality of corrugated portions, the alternate bends approac ing' each other, and the intermediate bends separat-ing from each other, substantially as described.

9. A'brake shoe of the character described', comprising a body'portion, and an insert embedded therein, said insert consisting of a continuous strip or ribbon of corrugated metal, the 'alternate corrugations approaching each other, rugations separating from each other, stantially as described.

10. A brake shoe of the character described comprising a body portion, and an insert embedded therein, said insert consisti O'of a continuous strip or ribbon of metal 1n beit or folded to provide a plurality of porbody porl icio and the intermediate corsub tions, and corrugated, the alternate corrugaland and State of New York, this third day tions approaching each other, and the interof February, 1911.

mediate corrugations separating from each HOWARD P. VVINGERT other, each portion of said strip extending HARRY JONES. r longitudinally of the shoe, and practically Witnesses:

the entire length thereof. F. H. HARTWELL, Signed at Su'ern, in the county of Rock- FRANK OSBORN.

Copies of this patent maybe obtained for five cents veach, by addressing the Commissioner of Patents, Washington, D. C.

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