US974589A - Reinforced brake-shoe. - Google Patents

Description

'J. A. PANTON.

REINFORCBD BRAKE SHOE.

APPLICATION IILD DEO. 16, 1909.

Patented N0v.1,1910.

2 SHEETS-SHEET 2.

m C. MAW) UNITED STATE-s PATENT-formes.

i lJOSEPH ALEXANDER PANTON OF WATERLOO, NEAR LIVERPOOL, ENGLAND.

REINFORCEI) BRAKE-SHOE.

To all whom it ma/y concern:

'Be it known that I, JOSEPH ALEXANDER.'

PANTON, a subject of the .King of Great Britain, residing in. Waterloo, near Liverpool, in the' county of Lancaster', in the Kingdom of England, have invented. certain new and useful Improvements in Reinforced Brake-Shoes, of which the following is a specification.

This invention relates to reinforced brake shoes of that type wherein the separable wearings'ole or shoe proper is provided with a reinforcing stripl or back of tough 1nalleable metal, and with a lug for the' reception of the key for attaching the brake-shoe in its place upon the brakehead.

The object of the invention is to provide, superior means Vfor anchoring the attaching lug to the malleable back, said means having al bearing across substantially the full width of the back.

A further object of the invention is to form a lug separately from the back so that it may be produced from heavier or `thicker material than the back, thereby producing a stronger structure than where the lug is formed out of the same material as the back. When the lug has been anchored or secured to the back, cast metal is run around the back and the base of the lug so as to virtually make the lugan lintegral part of the backing. I do not, however, depend primarily upon the lug becoming an integral part of the shoe, but I rely upon the keying and anchoring of the lug in the back. Hence, the block may be worn down to the backing and yet the lug will not come o'ti.

The invention is illustrated in the annexed drawings, wherein:

Figure .l is a perspective View of a steel back and lug in their iinal form or shape: Fig. 2 a longitudinal vertical sectional View of a separable head and shoe designed according to my invention; Fig. 3 a transverse central sectional view of the shoe, the backing and the attaching lug; Fig. 4 a perspective View showing a modified form ot the back, the lug and the means for attach ing the lug in position: and Fig. 5 a transverse sectional view of the modified form taken through the lug, the back and thelSpecification'of Letters atcnt. applicati@ :nea December 1s, 1909, Serial N6. 533,40@

Patented Nov. 1, `1910.

l plate or backing B, `as shown in these fig-y ures,l is made of equal width throughout.

`At millength itA is stamped to it'orm an upward projection or hump ll, in the upper tace of whichvaretwo longitudinelly-extending slots Fw i .G is the attaching lug, made froma blank or Hat strip of metalbent into an inverted U shape, the parallel arms` Il of which are spaced apart a. distance equal to the distance between the slots F. rlhis lug is of thicker or' stronger material than thelbaek Il. rlhe lower ends of the arms Il are provided with slots I for the reception ot' a cotter or lockingbar J. The arms Il will be passed down through the slots F, aftcrwhirh the cotter or locking bar is passed through the openings or slots I, the bar being of sufficient length to project to eaeh side of the arms of the lug, as will` be clearly seen upon reference to Figs.l 2 andy The cotter or locking bar lies in the recesses formed in the hump or projection E. The lug, as will be readily appreciated, is of sullicient height to form a passageway or opening for the key K by which the shoe is secured to the brakehead L, see Fig. 2. lVhen the lug and locking bar J are positioned with reference to the back, the cast metal of the shoe is run through and around the steel back and around the ends of the arms H, and the attaching cotter or locking bar J, thus firmly fixing the back upon the body of the shoe. The lug G thus in elfect becomes an integral part of the backing and ot' the body of the shoe and it is absolutely impossible to separate it from theother parts by reason of the fact that the arms thereof actually become interlocked with the steel back. The great advantage of forming the lugr (ir separate trom the steel back lies in the fact that it can be made of thicker metal than said back. j

In Figs. el and 5 a slightly modified form ot' the device is shown. In these figures thebacking B is provided -with a central opening, as P, preferably rectangular and of a size to receive the lower portion of the lug G which in this instance has the form of a hollow rectangular members the upright Walls H of which will be provided with oppositely-disposed openings S through which the fastening key may be passed. To se cure the lug in place' a cross-bar or Cotter Q is employed, the central portion of which is preferably struck up slightly to cause it to fling the upwardly-projecting portion of the seat in the opening P formed in the back, see Fig. 5, As in the otherfigures, the metal of the body A will -be castl upon the 'back and. around the lower portion of the lug Gr and around the cotter pin or plate Q, thus securely holdingt the parts in position. As in theother instance, the lug will preferably be made of a metal heavier than the back.

Under both `modiications the cast metal of the shoe is preferably run through and around the steel back and around the flanges or cross-pieces of the lug so as to make the lug in effect van integral part of the backing and of the bodyT of the shoe.

Having thus described my invention, what I claim is: Y

1. In'a brake-shoe, the combination of a back; a key-lug extending through the back; and a locking plate extending through the downwardly-projecting portion of the lug and underlying the back.

2. In a brake-shoeLthe combination of a back provided with an upwardly-projecting portion; a key-lug extending Vthrough said upvvardly-projecting1 portion; and a locking bar or pin passing t rough the downwardlyextendlng portion of the lug and underlyback. y

vided with a slot, said arms being adapted to be passed down through the slots in the back; and a locking plate orl key passing through the slots in the arms and underlying the back. A,

4. In a brake-shoe, the combination of a back having an upwardly-extending portion or section extending across the same, said portion having two parallel slots formed therein; a key-lug formed of a separate piece, bent into an inverted U-form, each arm thereof having a slot formed in its lower portion, said arms being adapted to be passed through the slots in the back; and a locking plate or key passing through the slots in the arms and underlying the back.

In witness whereof, Iv have hereunto signed my name this 4th day' of December 1909, in the presence of two subscribing witnesses.

' JOSEPH ALEXANDER. PANTON.

Witnesses:

G. C. DYMOND, RICHARD W. WILLIAMS.

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