US1078039A - Brake-shoe. - Google Patents

Description

w. o. FISHER.

BRAKE SHOE.

APPLIGATION FILED JULY 17, 19'12..

Patented Nov. 11, 1913.

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UNITED STATES PATENT OFFICE.

wrLLIAM C.V msnen, or MIDDLETCWN, CoNNEeTICUT, AssrGNoR 'ro' THE RUSSELL. MANUFACTURING COMPANY, or MIDDLETCWN, CONNECTICUT.

BRAKE-SHOE.

Toell whom z' may concern Be it known that I, WILLAM C. Frenzen, a citizen of the United State 'residing at\ Middletown, in the county of l\ iddlesex and State of Connecticut, have invented certain new and useful Improvements in Brake- Shoes ;L and I do hereby declare the followinf; lto be a full, clear, an exact description of the invention, such as Will enable others skiled in the art to which it appertains to ma (e and use the same.

This invention relates to -improvements in brakes and more particularly to shoesv therefor, one object of the invention being to so construct a brake shoe s to enhance' the longevityof the same, an' prevent the generation of heat.

A further object is to construct a brake shoe in such manner that the noise and Wear incident to theuse of shoes made partly or Wholly of metal, shall be reduced to a minimum.

A further object is to so construct a brake shoe as to enhance the durability of the same; afford adequate frictional contact with the Wheel with a minimum amount ol.`

VWear in a given lengt 'of timegand be capable of quick and ready application and renewal.

With these objectsin view, the invention consists lin certain novel features of construction and combinations of parts as hereinafter set fort and pointed out in the claims.

Inthe accompanying drawings; Figure 1 is a view' s owin the application of my improvements; Fig. 2 is a separate viewof the shoe, s owin its appearance before being applic to t e 'shoe head; and Fig. 3 is a sectional view of the-shoe.

1 represents a brake shoe head which may be of an preferred or conventional form, and to which my improved Wearing shoe 2 is applied, as 'will be more `fully herein# after explained.

The shoe 2 is made of asbestos fabric (preferably containing Wire in its i Specication of Letters Patent. Application 'filed July 17, 1912. Serial No. 7l-)9,93 2.

Patented Nov. 1 1, 1913.

Strands) comprising a plurality of superimppsedplies securely unitedinto a solid mass egcept at the end portio s, the Whole treated With har en ing materia such as a composition of cated sulfur and molasses Which will render the shoe very hard and durable .but sufliciently pliant to permit it to bebent means of binder `threads roughout .the

. body portion of the shoe,t e epd portions 5 of said layers or plies b ing' eft free, between their side edges. ('l'he loose ends of the several plies at each end f theshoe may be cut diagonally so that w en these ends are subseque tly bent to pass over the ends of the head, t eir extremities Will aline with each other.

After the device shall have been Woven to the form shown in Fig. 2, it will be treated with hardening and toughening material as` hereinbefore explained, and then pressed into shape to cause it to conform to the brake shoe head to which it is to be secured. Byleaving free the end portions of the sev- .eral plies forming the shoe, said end portions may be bent abruptly so that they will extend over the ends ofr'the head1. and hug the same closely, as shown at, 6 in Fig. 1. During such abrupt bending of the end portions of he shoe, the free end portions of the plies wil move slightly, one upon another. and thu permit thel several superimposed plies -(W ich mark ls 'gments of Succ sively increasing radii at t e ends of the s oe) to lie closely upon each other.

The ends 6 of the shoe are secured to the shoe head, preferably by means of clamping referably by it plates 7 which are secured. lo saidhead and bear u )on the )oi-tions (i 'of the shoe said l l s Aplates being provided with holes which aline provided at their free ends with hea ds i), be-

has set.

tween which latter and the plates 7, suitable disks or washers 10 may be located. In order to prevent possibility -of the bolt-s becoming loose, suitable locking means may be employed. For example, the head 9 of each bolt may be made with grooves or recesses 11 to receive the free end of a locking finger 12 secured vto theadja'cent plate 7.

In the manufacture of the shoe the entire shoe is treated with the hardening material, and I prefer to shape it between formers before the hardening material sets, and

again shape it between formers after it has' hardened and set in order to secure perfect shape, but l may omit the preliminary shapn ing, and not subject the shoe to any shaping process until after the hardening material Tn cach instance however the shapinf,r is done between forms prior to its application to the shoe head, and it is shaped in this form to conform to the curvature ofthe shoe head, so that there is no tendency, after the shoe is placed on the head, for shoe to bend or move away from the head.

With a brake shoe construct-ed and applied as hereinbefore described, a wearing face is afforded which will be yielding and avoid the noise and rattling incident to the use of shoes having metal engaging surfaces. While the body of the shoe consists of woven fabric, still experience has shown that the same is very durable and at the same time, adequate frictional engagement with the wheel will be afforded to render the shoe very eiiicient in the performance of its functions.

',Ihe shoe "can be quickly and easily applied to the head and can be readily replaced when worn. v

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is z- 1. A brake shoe comprising a woven sheet of asbestos folded back and forth upon itself forming a plurality of superimposed plies, the said plies being united at their intermediate portions and free between their edges at the end portions.

2. A brake shoe comprising a plurality of superimposed plies ,of woven fabric. said plies being united at their intermediate portions and free between their edges at the end portions.

3. A brake shoe comprising a sheet of woven fabric folded longitudinally back and forth upon itself forming a plurality of superimposed plies, said pliesbeing rigidly secured together in their intermedlate portions and free between their edges at the end portions.

4. `A brake shoe comprising a woven sheet of asbestos folded longitudinally back and forth upon. itself, forming a plurality of superimposed plies united `in their intermediate portions and free between their edges at the end portions, said fabric layers containing hardening material.

5. The combination with a brake shoe head, of a shoe comprising a plurality of superimposed plies of woven asbestos containing hardenlng material, said plies being united in their intermediate portions and free between their edges at the ends, the ends of the shoe extending over the ends of the heads, and fastening devices securing said ends of the shoe upon said head.

6. The combination with a brake shoe head, Iof a brake shoe composed of a plurality of superimposed plies of woven as bestes secured together into a compact body intermediate its ends, the latter being left free and fiexible, the said shoe being impregnated with'a hardening material, and devices for detachably securing the iiexible end portions to the brake shoe head.

7. The combination with brake shoe head, of a brake shoe composed of a plurality of superimposed plies .of woven asbestos secured together into a compact mass intermediate its ends the latter beingv left free and flexible, said shoe beingimpregnated and bent prior to its application to the head, into shape so as to conform to the concave face of said head and present a concave wearing face to the wheel. 1

8. A brake shoe made of woven fabric the intermediate portion of said shoe being hard and compact and the ends fiexible whereby they may be bent for attachment to the brake shoe head.

9. A brake shoe made of a series of superimposed plies of woven fabric, the interme- 'diate portion of said shoe being hard and compact, and the ends thereof flexible whereby they may be bent for attachment to the brake shoe head.

10.y A brake shoe made of Woven material the intermediate part thereof being compact and hard for contact with the wheel and the two ends flexible for attachment to the brake shoe head.

11. A brake shoe composed of a head havinga concave face, and a shoe, the latter being made up of a plurality of superimposed plies of woven fabric united into a solid mass, the said mass being impregnated with a hardening material andbent prior to its application to the head into shape so as to conform to the concave face of said head and present a concave wearing face to the wheel.

12. A brake shoe composed of a head having a concave face, and a shoe composed of a plurality of superimposed plies of Woven fabric containing Wire and united `into a solid mass by a binder, the shoe being bent prior to its application to the. head into shape so as to conform to the concave face of said head and present a concave face to the 10 wheel. f

' In testimony whereof, I have signed this specification in the presence of two subscrib- WILLIAM C.V FISHER. Witnesses:

mg w'tnesse s.

C. L. WILLIAMS, H. W. HUBBARD.

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