US1114941A - Brake-shoe. - Google Patents

Description

G. H. TRUE.

BRAKE SHOE.

APPLICATION TILED SEPT. G, 1912.

Patented Oct. 27, 1914.

F l l l I l I l l I I! CHARLES H. TRUE, 0F PHOENIXVILLE, PENNSYLVANIA,

ASSIGNOR TO THE RAILWAK MATERIALS COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

BRAKE-SHOE.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed September 6, 1912. Serial No. 718,868.

To all whom it may concern Be it known that I, Columns H. TRUE, a citizen of the United States, residing at lluwnixville in the county of Chester and State of Pennsylvania, have invented certain new and useful Improvements in Brake- Shoes, of which the following is a specification.

This invention relates to railway brake shoes of the typecommonly known as reinforced shoes and its object is to provide a tough ductile metal attaching lug and secure it to the shoe body so that it will not become separated therefrom even if the body is cracked or fractured.

A further object of the invention is to] permanently lock the ductile metal attaching lug to the reinforcing member in a secure manner and to provide means for properly positioning the lug on the plate.

The invention embodies certain novel features of construction which will be understood bv reference to the following description when considered in connection with the accompanying drawings illustrating one preferred embodiment thereof.

()n the drawirigs-Figure l is a plan view showing the reinforcing plate and lug embodying my invention, the shoe body being iiulicated in broken lines; Fig. 2 is a longitudinal sectional view through the shoe shown in Fig. 1; Fig. 3 is a. bottom view of the reinforcing plate with the at taching lug secured thereto; and Fig. l is a perspective view of my improved attaching lug.

Referring to the drawings it will be observed that t3 indicates the body of the bralte shoe which is preferably made of cast iron in any approved shape with or without insorts of any suitable character. A reinforcing plate 7 is disposed at or adjacent to the back of the shoe body, said plate being of any well known or desired contour ha ving, if preferred, bcvclcd cdgcs S and notches t), or other indentations or recesses to per-y mit the entrance of the mctal of the shoe body for the purpose of forming a locking cngagcmcntbetween the body and the plate.)

The plate is also shown as provided with longitudinal and transverse slots ltl and ll, rcspcctivcly, into which the mctal of the shoe body is permitted to tlow. 'lhc cnd l lugs l2 and the guide lugs lil arc also formed by the body metal which tlows up arouudi and bent to the desired shape to fit the brake the sides andends of the the openings 10.

The plate 7 is provided on each side of the center with a pair of slots 14, preferably open-ended and parallelly disposed and spaced apart the requisite distance to receive the ends of the attaching lug. This lug, designated generally by 15, preferably consists of a metal strip or strap stamped plate and through head as illustrated in the drawings. From Fig. i it will be observed that the lug comprises a body portion 16 which extends transversely of the shoe and is provided at each end with a pair of downwardly projccting legs 17, the spacing between the pairs of legs being sullicient to accommodate an attaching key by means of which the shoe is attached to a brake head in the usual manner. The material at the inner edges of the legs is cut away, as shown, to form the shoulders 18 which rest upon the 11 per face of the plate 7 at the inner ends 0 the slots, the extremities of the legs below the shoulders being, therefore, narrower than the portions above the shoulders so that these extremities may be inserted throu h the slots 14 to lie beneath the plate in he body of the shoe. After the legs have been inserted through the slots the ends are bent longitudinally of the shoe to lie against the lower face of the plate 7 and thereby lock the lug and-plate together. It will be observed that the bent ends of the lug 15 lock the lug to the plate while the shoulders 18 retain the lug at the requisite height above the plate and engagement between the in ncr cnds ot the slots and the inner edges of the legs scr,vcs to prevent lisplacemcnt of the lug laterally of the shoe.

The lug and the plate are preferably asscmblcd and lOthtti together in the manner above described and arc then placed in the inold with suitable inserts, if desired, and the body of thc shoc cast thereon. The lug is securely locked to thc latc and the plate is securely cmbcddcd in the body. so that the lug will not become cparatcd from the plate in service and the plate will remain united with the body even it the latter is cracked or fractured. It will be understood that the broad tlat Faces of the legs I? as well as thc top of the lug, herein re l'crrcd to as the body portion 16, will engage the brake head and as the lug is made of 11 be lithe; if any,

r invention W315 be .ugoing Wiizhout fur- V I .1 will. be obvious 0 at in "the m M, 2 1199; variaus changes in the size, shape raporiion of the LiOilS parts any we yesaz'ted. t0 Without fiu artil1g from tha ssv'w e- 01E zhe invention set :Ecrth in the sandesi clainm claim:

hmke sha cemprising a. reinifsrcing; bay? provided W333i; 2; pair 01% transversely ezzeniing cent- Iiy dipa-sed 510m at each slam 1m ax'rxinchmg lug seamed. 60 said back swig mi suitable material bent transversely of the back at each sicle legs in the sfiots being cut away 1'30 provide shenlders engaging the upper ae 01: the reinfotming back and file extremities 0f said 5 bent up in Contact with the under id back, and a, body-cast 011 said CHARLES eases: Vmi. F BELT,

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