US1479798A - Rubber sole - Google Patents

Description

. convenence as; rubber- Patented Jan. 8, 1924.

PATELN GEORGEFEEGUSON, OF WOLLASTON, MASSACHU'SETTS, ASSIGN'GR T0 MACHIN'ERY CORPORAIIION, OF PATERSON; JERSEY, A CORPORA'IFIION OE JERSEY.

RUB BER SOLE.

Applicaton filed February 28, l92a -seral lio. 362,055; V

ytan Improvements in Rubber Soles, of

Which the following desoription, in connestion wth the accom panying drawngs, is a specificaton, like referenee oharaoters on the draWngs indicatng like parts in the This inven-ton relates to soles for shoes anc1 s herein illustrated as emboded in a molded and vu-leaniz e d sole 01 rubber or rubber Compound herenafterreferred.to for In the manufaoture of rubber-soledturn shoes tscustomary to use a rbbersolebavng a. sewng. rb or sewing shoulder end a eather.- The rib or shoulder extends perpendcularly around the margn ofthe sole at a distanee fromthe edge of the sole, the feath er extend ing horizontally.from the base of the rib or.shoulder tot he edge-of the sole, In the manufaeture of the shoesueh a sole,

- together with an assembled upp er an d lining, are placed wrong side,out up0n a last and the upper and lining fastened to the sole by stitohes which should extend through the base of the rb or shoulder. In the case of the usual sole no considerable dflculty s encountered in properly 1ocating the sttches because the margin of the last used is curved downvvardly and outwardly and the eather of the sole is simlarly bent and held by the pullng-over and lastng operatons so as to permt free access by the needle of the sewn machne to the base of the rb or shoul er. In the case, however, of a rubber sole which has a heel ntegral with it, a dificulty arses. The last used for such a sole s recessed at its hee1 end to receive the hee1 of the sole; end, both because of the shape of' the recess and the thiokness and consequent stifiness of the sole, it s impossible, or at least impraotioable, to bend the feather downwardly about the hee1 end of the sole. When the feather is not bent downwardly the needle of the Sewin machine is' liable to enter the rb or shouler at points located above the base wth the result that there is looseness around the heel end of the shoe after it has been turned right side out and the seam is not as strong as t should be.

The general object of the present invention s to avod. these and simihr unde sirable results; and, to ths end, thefeather of the illustrative sole s inclined downwardly from the base of the sewing rb-or shou1der to the edge of the sole aroundthe heelfpor-- ton of the sole. In the: illustrative s0le,the feather s beveled slightly in this loealty to the end, as stated. above, of permittng the needle of the sewng maohine:t passthrogh the baseofthe rib orshoulderm Referringnow to.the accompanying draw- 1ngs,-

Fg.. l s a perspectve of a solein which the present nvention is embodied;, v

Fig. 2 s ;a crOss:section through the heel portion of the sole; v Fg, 3 is. a oross-sectin through the forepart of the sole, and I Fig. 43 s a fragnirita1y crossfset on through the forepart of a shoe having: Su.ch a sole, showing the shoe on,the last andr the upper being fasteneto the.- sole by stitohes. The illustrative sole oomprses a sew-ing rib 5thje outer Wall of Whichfrms the usuaI sevvngshoulder 7. The rib s spaod fi-ronn the edge of the sole; ancbextending from the base 01: the rb'to the edge of. the sole s the feather;9 The sole als0 ha s a heel 1.0, Whg h js.i'ntegral with ,and is pro.- vided'fivith a gutteir 11 and a raised middle filler porton 13. The sole s a molded and vulcanzed one and has on its upper faee and partly embedded therein a layer of fabrc 15, such as oanvas, the purpose of whieh s to strengthen the sole and partieularly the rib.

In the process of incorporating sueh a sole in a shoe the sole, together wth an upper, Which may or may not be 1ined, s placed wrong side out upon a last, the upper bei ng then pulled-over and lasted and thereafter sttched to the rib. In Fig. 4 s shown" a fragmentary cross-section through the forepart of the last and. shoe, the upper being ndicated at 17 and the 1'1eedle of the sewing machine at 19., The needle passes through the rib 5 from outside to inside, the gutter 13 providing passageway for the needle after t emerges from the rb; and, in order to produce a strong, tight seam, ii) is desirable that the needle pass substantially through the base of the rib. In the forepart and shank of the sole there is no considerable diffieulty in accomplishng this result, sinoe the margin of the forepart and shank of the last 21 is inclned dovvnwardly end outwardly, as ndicated at 23and the margin of the corresponding part of he sole s beni; down nto contact wth ths surface durng the pulling-over end lasting operatons end held in that position as shown in F ig. 4 with the obvious result that the needle of the sewing machine may readly pass through the base of the seWing rb without dgging into other parts of the sole. VVith a sole, however, which has a heel attached o it, a different condition obtains. The last in such case is, of course,recessed to receive the hee1. The recess has a flat bottom so that no, bendng down of the margn of the heel is possble; bui; even if the bottom of the recess were nclined downwardly, t would still be impossible, or at least mpractcable, to bend the margin of the heel downwardly end 110101 t bent be- 1cause of the thickness and stiffness of' the 1ee1.

Accordingly, in the illustrated sole, the feather around the heel end of the sole s molded so as to be nclnecl downwardly end outwardly (from the base of the rb to the edge of the sole) es shown best in Fig. 2. With ths construction, there s no difficulty in securing a properly located seam around the heel end of the sole as well as around the forepart end shank; and the beveling 01 the feather around the heel end of the sole is not objectionable both because it s comparatively slight end because the combned thckness of the sole end heel at that locality s consderable.

Soles which contain several features of the llustrated sole net heren claimed, as

I well as molds for making the soles, are

co the same assignee as s the present application.

Although the nvention has been set forth as embodied in a particular sole ofvulqanzed rubber, t should be understoocl that the invention s net limted in the scope of its applcatin to the partcular sole Whieh has been shown end described. I.

Havng thus descrbed my inventn, what I claim as neW and desire to secure by Letters Patenti of the United Sbates is 1. A molded a1id vulcanized. one-piece sole end heel adapted to be ncorporated in a turned shoe, there beng a sewing shoulder end. a feather extending around the sole, bhe feather around the heel porton of the sole being nclned downwardly avvay from the base of the sewing rib.

2. A molded end vulcanized one-pece sole end heel adapted to be 'ncorporated in a turned shoe, comprsng a sewing rib projectng from the upper ace of the sole, a feather located outside the rib end a gutter located inside the rb, the feather around the forepart of the sole beng substantally at rght angles to the outer wall of the rb and around the heel porton being inclined downwardly avvay frena the base of the rib.

In testimony whereof I have signed my nume to ths specification.

GE ORGE FERGUSON.

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