US2648917A - Detachable heel tread - Google Patents

Description

Aug. 18, 1953 W. J. HERALD ETAL DETACHABLE HEEL TREAD Filed Nov. 28, 195p III w- 5. mama (w) mummy hq- (Lu/mm, mm PM HTIMIJEKQ Patented Aug. 18, 1953 DETACHABLE HEEL TREAD William Joseph Herald, Strathmore, Victoria, and

Robert Murray, West Brunswick, Victoria, Australia Application November 28, 1950, Serial No. 197,878 In Australia December 5, 1949 3 Claims.

This invention relates to improved means for detachably fixing replaceable wearing pieces base layers of leather or other suitable material-to the undersides of the heels of boots and shoes.- I

The underside of the heels are subject to much wear in use in comparison with soles, uppers and other parts of footwear, and require renewal or replacement at frequent intervals during the useful life of a pair of boots or Shoes in order to retain the shape and appearance thereof.

In manufacture, the base or bottom pieces are usually firmly secured as by pins or nails, and the replacement of such pieces in general, require skilled attention and cannot be undertaken by the user.

It has been previously proposed to provide replaceable wearing bases or pieces for the heels of boots and shoes, but hitherto the devices for securing the former to the latter have been complex, and costly, and means have been required in the heel for the sole purpose of detaching the wearing piece when replacement became necessary. 7

Now the principal object of this invention is the provision of simple, inexpensive and eificient means whereby a replaceable piece or base, may be detachably fixed to a shoev or boot heel so as to remain firmly attached thereto, but may be readily replaced by a user, upon becoming unduly worn.

A further object of the invention is to provide a replaceable wearing piece having projecting elements fitting sockets in a shoe heel,

outward displacement of the projecting elements from the sockets being opposed by frictional resistance to movement of the former in the latter and by creation of partial vacuum in the sockets by outward movement of the projecting elements in the sockets.

Another object of the invention is to provide a replaceable wearing piece having holes in the projecting elements in communication with the sockets and extending partly but not completely through the elements, said holes responsive to predetermined wear of the elements connecting the interior of the sockets with the atmosphere and preventing the formation of partial vacuum in the sockets by outward displacement of the elements in the sockets.

A better understanding of the invention will be had from the following description of the practical exemplary arrangement as applied to the heel of a boot or shoe and depicted in the accompanying drawings.

. 2 In these drawings: 1 Fig. 1 is an elevation, partly in section, of the rear portion of a shoe fitted with a replacement heel piece according to the present there is formed in the heel 5 as by drilling,

several cylindrical recesses 6 which extend D- wardly from the underside of the heel for a,

required distance. Preferably, three of such recesses 6 are provided, two of which arelocated in the vicinity of the front corners of the heel, while the third is positioned centrally and near the rear rounded portion of the heel.

The replacement piece 1 to be applied to the heel formed with the cylindrical recesses 6 has the same external shape and size as the heel and to correspond with the position and spacing of v the recesses.

Accordingly, upon the replacement piece being applied to and centered upon the heel, the apertures in the former will be positioned in exact axial alignment with the recesses in the latter. Mounted in each aperture in the replacement piece is a peg or plug 8 which is formed toclosely fit the corresponding cylindrical recess in the shoe heel. I v

The pegs are provided with axial holes or recesses 9 which extend from the entry ends IU of the pegs for a required distance towards the heads of the pegs and with axial extensions or blind holes ll of smaller diameter than the holes or recesses 9 which extend part way through the heads.

The heads [2 of the pegs or plugs are of tapered or conical truncated form, the larger ends of the tapered heads being of maximum diameter tapering to a minimum diameter somewhat less than the diameter of the body I5 of the pegs which is of cylindrical form.

At the smaller ends of the tapered heads, D

"ripheral shoulders 13 are formed and the opposite or entry ends H] of the pegs are somewhat tapered to permit of easy engagement with the cylindrical recesses 6 and with the apertures in the replacement piece.

The pegs or plugs 8, so constructed, are driven into the apertures in the replacement piece, so that the larger ends [2 of the tapered heads are flush with the wearing face of the replacement piece.

Upon thepegs being thus inserted into: the apertures, the cylindrical body portions 15 of the former project from the apertures for engagement with the cylindrical recesses. 6. of the heel.

As may best be understoodz by reierencest Fig. 4, in order to firmly secure thepegsimthe replacement piece, a hollow tool or punch is placed over the projecting body [5 ofeachm a: and is thrust under high pressure upon the. inner face N5 of the replacement piece to force the contiguous material of the latter firmly against the shoulder l3 at the smaller end of the tapered head, thereby securing the, P against displacement.

The replacement, piece I is-secured-totheheel yn h pr j c inepe odies 15; into. the. corresponding recesses 6, air within the recesses and. the axial holes- 9,.and' H of: the pegs bein partially. expelled asthe same are driven into the-recesses.

Upon a replacement piece being undu y 1011 the-axial (BXBGQSlQQS OYbliIlQ hOIGS H' are opened 0 Phe-replacement pieces;;for. each size of; shoeorboot heel are interchangeable and-are easily detached; and; replaced by: a, wearer, and moreover; ifz he,rep acemen i ieces on a. pair of..' s.

are more-worn at someparts; than others for instance; at; the edge I], they may be readily changed, from; one; heel tothe other so; as; to-

iderablyextend; h ir pe iod; fi ti m Eurthermc er he; eplacem nt: iec s aste con truc d; ections so; that. arts;v th reof, apt to become worn, such as the rear heel; p.01: on ibe discarded and p c d-by others havin attac m nt: pegs; r; p s; as; b w

scri ed. Accordin ly, e fiectiyei ife of he r placement pi ces; may he: furth r? d d.

The pegs. or; p1uss1.ma e cnstructed; o

w odrplasti z ther itable m ri ls as maybe..-found esirable-orn cessarn We claim: .1 alep ac m ntp ece; or, a hoe heel a ing secured therein and extending from a side thereof, a plurality of projecting attachment members fitting complementary sockets in the shoe heel and opposing displacement from the sockets by frictional resistance and creation of partial vacuum therein by outward movement in. the sockets, said attachment members ing longitudinal holes extending partly therethrough open at the ends within the sockets, whereby upon predetermined wear of said membersthe sockets will be connected with the atmosphere to thereby prevent the creation of partial. vacuum in. and facilitate extraction of said attaclimentmembers from said sockets.

2. A replacement piece for a shoe heel having, secured, therein. and extending from a, side thereof a plurality of spacedly related pe fitting correspondingly spaced complementary socketsinthe shoe heel and opposing displacement from the socketsby frictional resistance and creation ofpartial: vacuum therein; by; 011tward movement in the sockets, said: pegs havin axial. holes extending. partly. therethrouglnopellu. at the ends within the sockets, whereby upon predetermined wear of said members the sock: etsv will be connected with the atmosphere; to thereby prevent the. creation of partial, vacuum-.1 in and facilitate extraction. of said attachment; members from said.sockets..

3. A replacement. piece for a shoe; heel hav ing secured. therein and extending from; a. Sid thereof; a plurality of: spacedly. relatedcy ndrical pegs fitting correspondingly. spacedi ci lindrical. sockets in the, shoe. heel; and. opposeing' displacement. fromthe; sockets. by, frictional; resistance and creation of partial. vacuum therein by outward; movement, inv the ocke s shoulders on. the pe s'engaging the side. of; the replacement piece andtruncated; heads on;the:

pegsextending from the shoulders through the,

replacementpiece andsecuringthe pegs herein; said pegs. having axial holesopen: to .the interiors. of the sockets terminating within.- the. truncated. heads, whereby upon predetermined Wear the.

. cylindrical sockets. will be connected with; the

atmosphere to thereby prevent the; creation 01? partial vacuum, in and facilitate. extraction Of the. pegs fromthe sockets.

WILLIAM- JOSEPH HERAlE'iD-e ROBERT MURRAY;

References. Citedtin the file; of thislpatent.

UNITED STATES PATENTS Number Name: Date...

Re.18,959 Jorgensen .,Sept. 26, 19 3.3..- 1,l99,5;25 Boutelle -p. Sept. 26,1916. 2,155,584, Bryant-et a1. Apr. 25, 1.939..

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