US1639769A - Shoe-bottom construction - Google Patents

Description

H. GILSON SHOE BOTTOM. CONSTRUCTION Filed Feb. 14. 1925 2 Sheets-Sheet 1 Aug. 23, 1927;

L. H. GILSON SHOE BOTTOM CONSTRUCTION Filed Feb. 14, 1925 2 Sheets-Sheet 2 Patented Aug. 23,1927.

rarer Pris.

LORENZO H. GILSON, OF BROCKTOLL MASSACHUSETTS.

SHOE-BOTTOM CONSTRUCTION.

Application filed February 14, 1923. Serial No. 818,944.

In the manufacture of welt shoes the innersole is formed with a pro eCting sewing rlb about the margin of its iorepart and shank to which is stitched the upper and welt, this rib-often being formed by channeling the sole along a line somewhat Within the margin and toward the margin and then lifting the inwardly inclined flap formed by 'this operation. vThis construction leaves 'an open marginal groove of triangular cross section on the lower face of the insole which is bridged by the out sole. Wear of the shoe causes the innersole to become deformed so that its lower face is supported throughout substantially its whole extent. on the out sole. This forms a gutter in the sock face of the innersole within the shoe which follows the weakened line of the channel and causes the shoe to become uncomfortable. Attempts have been made to correct this condition by filling the open channel on the lower face of the innersole with ground cork, leather scraps or plastic filler. This is a troublesome operation and has not been successful in correcting the difficulty because such fillers will creep, shift and pack under the pressure of the foot.

According to the present invention'a strip of leather, rubber, or any other suitable material is formed or cut in cross section to the contour of the channel and is made fast therein. This is entirely eii'ective to correct the trouble above mentioned. This filler strip may be formed in long lengths similar to thecontinuous or endless welt, it being perfectly feasible to form or wind it on reels containing as much as 1300 yards each. This avoids the necessity of cutting and fitting pieces within the channel of the shoe, and permits the utilization of the material without substantial waste, andwith the minimum of'time and trouble for the shoemaker. f

As the finished strip, if formed from a single layer of leather, would require comparatively heavy and expensive stock, this invention also contemplates forming the filler strip of layers or laminations secured together, a ractical method of forming the built up strip having been-devised.-

Fora more complete understanding of this invention, together with further objects, reference may be had to the accompanying drawings in which,-*

Figures 1 and 2 show side and edge vlews, respectively, of a strip of leather to be used in forming a laminated filler strip.

Figures 3 and 4" are edge and side'views, respectively, showing the manner in which the laminations are cemented together to form a continuous strip.

Figures 5 and 6 show the compound strip cut lengthwise to form continuous strips of the required width.

Figures 7 and 8 are perspective views showing the manner of cutting each strip diagonally to form a pair of finished channel filler strips.

Figure 9 is a perspective of a piece of the finished filler strip.

Figure 10 is a perspective of a package comprising a reel with the continuous filler strip wound thereon;

Figure'll is a lateral section through the sole portion of a shoe substantially on line 11-11 of Figure 12 showing the channel filler strip in position.

Figure 12 is an inverted plan of a shoe before the sole has been applied and showing the filler strip in position.

Referring first to Figures 11 and 12 at 1 is indicated an innersole having a marginal inseam-receiving rib 2 formed thereon, this rib being formed-by channeling the lower face of the innersole as shown at 3 and lifting the flap formed by thechanneling operation. This lifting of the flap leaves an open triangular channel which is indicated at 4. The welt is indicated at 5 and is attaeher to the rib 2, the upper 6 and lining 7 interp sed therebetween, by the inseam 8. The out sole 9 is attached to the welt in the usual )1311118! by stitching 10. When no filler is employed for the channel 4 it is "found that in use the innersole sags into the v space formedby the channel, its upper or sock face becoming indented or guttered, and its lower face, being supported by the out sole throughout substantially. its entire extent. This gutter or groove which develops on the upper face of the innersole causes the shoe to be'uncomfortable to the.

wearer.

This invention, therefore, provides means for filling the channel in the lower face of the innersole so that it will not become deformed in this manner. For this purpose a strip of material, such as leather, rubber,

- istherefore unnecessary to plece the strip the shoe is being made, but also within the channel of the shoe, the strip being placed in position in the channel and cut off as required, being preferably cemented in position. This not. only eliminates the labor of piecing the material when I revents the waste resulting from trimmings rom the individual shoes. The filler strip may, if desired, be'wound up on holders consisting of reels such as shown at 15 in Fi ure 10, and may be of considerable length, it being usual in ractice of this invention to wind 1300 yar s on a single r'eel. It may, of course, be packaged in any other suitable or convenient way.

In case it is desired to form the filler I strip from laminations secured together'this may be accomplished in the manner dis-' closed in Figures 1 to 8. Referring to Figures 1 and 2, 20 indicates a strip of. material thinner than the desired filler strip and considerably wider; These strips 20 are scarfed at their ends and may be cemented in superposed face to face relation, the scarfed portions breaking joints in adjacent laminations as shown in Figures 3 and 4. This forms a continuous compound strip of the thickness required but of a width a multiple of the width of the desired filler strip. The purpose of formin in this manner is to save labor 1n the handling of material, each piece containing stock forseveral finished strips, and to insure a proper bond'between the laminations, this being more effectually accomplished whenthe strips are wider than the desired finished filler. The wide strip is then split up into strips of the finished width Figure 5 showing the strips split once and Figure 6 showing each of these strips split again to form strips 22 rectan lar in cross section and of the width of the esired channel filler. Each of these strips is then splitgi'alon 1g-'-* cross sectional diagonal, shown at 23 in ures 7 and 8, to form a pair of strips 25 of triangular cross section of the required dimensions, a ortion of the finished .strip being indicate in Fi ure 9.. By this means a laminated strip 0 .triangularsection is produced, the laminations lying parallel to one face of thestrip. While two laminations are shown, more might be used, ifdesired to build up the material to the required thickness. The method of building up a the strip little, or no space, between the insole and outsole for the introduction of the usual soft, ground-cork bottom filler. As a result the portion of the insole weakened by channeling-andthen trimming the channel flap is adequately supported and its sock surface remains smooth and comfortable because a guttering of this surface along the line of the channel-is prevented because of the presence of the leather channel filler which will not creep or become misplaced.

While the features of the invention have been shown and described in their preferred embodiment, it will be understod that the invention may be embodied otherwise than as shown in the drawings and described in the specification and yet be within the scope of the following claims.

Having thus described an embodiment of this invention what is claimed as new is:

1. In combination with a shoe having a channeled innersole presenting a triangular open channel, a strip of triangular cross section and uniform from end to end filling said channel. 2. In combination with a shoe having a channeled innersole, a leather strip continusaid innersole and said outsole to support the substance of the innersole that forms the bottom of said channel and prevent a weargutter forming in the sock surface of the innersole.

. 4. A welt shoe having a bottom comprising a leather innersole presenting a channel .area Within thesewing rib, a welt and an voutsole, and a leather channel strip paral ,leling the welt, said strip having anouter edge face abutting the shoulder at the outer side of' the channel area and an inner skived edge to form a substantially smooth. joint with the face of theinnersole at the inner side of the channel area, thereby filling the channel area and affording a substantially flat and homogeneous tread surface within the welt and opposite the inner face of the outsoie; f

In testimony whereof I have aflixed my signature.

" LORENZO H. GILSON.

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