US817893A - Brake-shoe. - Google Patents

Description

No'. 817,893. l PATENTBD APR. 17, 1906.

n G. W. vAIM'BRUSTl BRAKESHOE. AYPLIOATION FILED Nov. 1a, 1905.

y CHARLES wjARMBR-Us'r, oFcHicAGo, 1LLrNo1s'.

Brandi-SHQE. l

To a/ZZ w/tom ift 77mg/ concern:

Be it known that I, CHARLES W. ARM- BRUsT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain newl v and useful Improvements in Brake-Shoes, -ofl which the following is a specification.

This invention relates to brake-shoes of` that type in which the shoedproper is separably'or detachably connecte to 1ts supporting or carrying member, commonly known as.

x the head l In an a plication executed' by me on the 6th day o November, .1905, and filed in the nects t r portions in part taking the place of integral Patent OHice on the 9th day of November,

1905, Serial No. 286,571, I have disclosed and` claimed a brake-shoe construction characterizedchiey by the provision of'fillin and spaclng'members'between the back o the s oe proper and the head in order to enable substantially the entire body of the shoe to be worn up without danger of injuring the head even under-uneven-wear of the shoe.

My present improvements are based upon the improved form of shoe.. forming the subject-matter of the aforesaid applicatiornand consist, essentially, in the provision of novel means carried by the shoe for v1separably connecting the shoe to the head, such means comprlsmg a member or members cast in the lling and spacing lugs on the back of the shoe, said members havingprojecting portions a ertured to receive the key that conlie shoe to the head, these apertured apertured lugs or kee4 ers shown in the ap lication aforesaid.` T ese inserted fastening means in their preferred'form and as herein i .shown also serve the additional function incase of breakage of the shoe of holding the parts together and retaining them connected to the head, sothat they can continue in service until worn out without danger'of falling to the track, with the consequent liability to wrecks, and also of holding the spacinglugs against falling to the track when the shoe proper has been worn out.

My invention in a preferred form is illustrated in the accompanying drawings, Where- 1ncomplete shoe and head embodying my improvements. Fig. 2 is an edge elevational view of the same looking. toward the head.

Specication of Letters Patent. Application 01e@ Novemier 13,1905.' serai No. 287,000.

Figure 1 is a side elevationalview of a` Patentednpri1`17,19oe. y

Fig. 3 is a longitudinal sectional view, and

Fig. 4 is a cross-sectional view on the line 4 4 of Fig. 3.

Referringjto the drawings, 5 maydesignate j the brake-head in the usual standard form, having the forked ends 6 and the intermediate Vinner apertured lugs 7 8y designates the tread or body portion of On the back of the shoe-body 8 the shoe.

are cast integrally therewith a series of members designed to coperate with the head vin guiding and holding the shoe relatively'to the head and also in spacing the shoe from the head, so that the former may be entirely used l up and worn out without danger of wearing v -or injuring the head. Referring to these members more particularly, 9 designates each of a pair of filling and spacing lugson the opposite ends of theouter side ofthe shoe, on

which lugs .are cast guide-lugs 10, lyingbev `tween the forked ends 6 ofthe head, thus preventing relative lateral displacement between part of the outer side of the shoe is cast a pair of filling and spacing lugs 11, on which rest the inner ends of the lugs 7 `of the head, and

' also apertured holding lugs or keepers 12, i

through which the key, 13 passes.'

`the head. and shoe. On the intermediate f v In casting the shoe I embed inthe spacing i and filling lugs 9 at the ends thereof relatively thinsheet iron or steel strips 14, the outer `ends of which are caused to project beyond the faces of the filling and spacing lugs, as

shown at 15, and are apertured to vreceive 'the ends of the key 13, whereby the end portions of the shoe are connected to the key. Preferably, and as herein shown; the embedded strips 14 are extended inwardly of the shoe between the lugs 9 and 11, their other ends being embedded in the lugs 11 and also projecting through and embedded in the fasten-v ing-lugs 12, as shown at 16, .this construction 1n casethe shoe breaks transversely at any point .insuring the retention of the broken v arts 1n service untiluworn out and preventing their falling to the track. `This construc- .tionv also retains theilling Yand spacing lugs in place and in service after the entire shoe' body has worn away and alsov prevents all possibility of wear falling upon partsof the head. j

From the foregoing it will be'lseen that the inserted or embedded .strips do not have the' ICO function of steel backs or brake-slide reinl forcements, nor do they engage theeshoebody proper at all, but rather serve as holding and attaching means which also prevent the falling away ofthe parts of the shoe in case of breakage 'or of the filling and spacing lugs when the shoe is Worn out.

The shoe body is shown as transversely weakened by scoring at its longitudinal center, as indicated at 25, in order to cause accidental breakage of the shoe to occur at a predetermined point, Where such breakage is immaterial, thus lessening the likelihood of breakage at material points. This feature, however, forms, in part, the subject-matter of my companion application above referred to and is not claimed herein.

lt is evident that variations and modifications in respect to the details of structure from the invention as described and shown may be made by those skilled in the art without departing from the principle of the invention or sacrificing any of the advantages thereof. Hence the invention is not limited to the particular embodiment thereof selected for purposes of illustration and description.

I claim- 1. A brake-shoe provided With filling and spacing lugs adapted to separate the same from the head sufficiently to allow the shoebody to be entirely Worn out Without danger of Wearing the head even under uneven Wear of the shoe, and having embedded in said I'illing and spacing lugs means for attaching the same to the head, substantially as described. 2. A brake-shoe rovided at its ends With iilling'and 'spacing ugs ada ted to separate the same from the head suY iciently to allow the shoe-body to be entirely Worn out Without danger of Wearing the head evenunder uneven Wear of the shoe, and having embedded in said filling and spacing lugs apertured at taching--lugs adapted for engagement with the key by which the slice is separably connected-to the head, substantially as described. 3. A brake-shoe provided at its ends and intermediate portions with filling and spacing lugs adapted to separate'the same from the head, and having embedded in said filling 'and spacing lugs metal strips, the outer ends of Wl-nch project from the end filling and spacing lugs in the form of apertured lugs adapted for engagement With the key by which the j@ erases latter and `the internal attaching-lugs of the head, substantially as described.

5. The combination with a head having apertured internal attaching-lugs, of a brakeshoe having on its back integral end and intermediate filling and spacing lugs adapted to separate the same from the head, metal strips embedded in the end and intermediate 'filling and spacing lugs on each longitudinal half of the shoe and projecting from the end lugs in the form of apertured attaching-lugs,

and a key passing through the latter and the internal attaching-lugs of the hea-d, substantially as described. y

6. The combination with a head having apertured internal attaching-lugs, of a brakeshoe having on its back integral end and intermediate filling and spacing lugs adapted to separate the same from the head and intermediate integral attaching-lugs on said intermediate filling and spacing lugs, metal strips embedded in the end and intermediate filling and spacing lugs and the intermediate attaching-lugs on 'both longitudinal halves of the shoe, respectively, and projecting from the end filling and spacing lugs in the form of apertured attaching-lugs, and a key passing through the latter and the apertured attaching-lugs of the shoe and head, substantially as described.

7. A brake-shoe provided on `the back thereof with lling and spacing means of sufficient thickness to allow the shoe-body to be entirely worn out Without danger of Wearing the head even underuneven Wear of the shoe, and having embedded in 'said filling and spacing means attaching-strips separated from the shoe-body proper, substantially as described.

l A' CHARLES `W. ARMBRUST.

` Witnesses:

SAMUEL N .y POND, Fnnnnnicn GooDWiN,

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