US2154135A - Innersole for open shank shoes - Google Patents

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Apnl 11, 1939. M. H MQORE- JR 2,154,135

INNERSOLE FOR OPEN SHANK SHOES Filed May 20, 1957 2 Sheets-Shee'll l I?? ven oiv.

April 11, 1939 y M. H. MOORE, JR 2,154,135

INNERS-OLE FOR OPEN SHANK SHOES Patented Apr. 11, 1939 UNITED STATES PATENT oFFicl-z 4 Claims.

In the manufacture of shoes of the sandal type, in which the upper is formed from separated sections of leather, or other material, so that the upper portion is open at various points from the sole upward, it is necessary to provide the inner sole, onto which the upper sections are lasted, with a finished edge, as the sidel of the inner sole is exposed at the points where the upper portion is open from the sole upward.

To provide the inner sole with a finished edge, it has been customary to bind the edge with a strip of cloth or leather which has been previously coated with Pyroxylin, or similar glazingvmaterial, and While, with this type of shoe, the upper may be attached to the outer sole by a sewing operation, a large proportion of the shoes of this type have the outer sole adhesively attached by Compo, or a similar form of cellulose cement. When the cementing process is employed, the

outer sole is adhesively connected directly to the inner sole at the points where the upper does not extend about the edge of the inner sole, and firm adhesion between the outer sole and inner sole, to the extreme edge of the latter, is very necessary. None of the various forms of cellulose cement which are employed will adhere satisfactorily to a Pyroxylin, or similarly coated surface, so that, where the edge-portion of an inner sole has been bound with a tape which has been coated with such material, it has been found necessary to buff or roughen the portion of the surface of the tape which extends onto the under side of the inner sole, so that a satisfactory adhesion at this point may be secured. This buiing operation is usually performed after the shoe is lasted, and is dilcult and sc mewhat expensive. It is particularly objectionable as the stitches which attach the binding tape to the inner sole are liable to be cut and the upper adjacent the sole is also liable to be damaged by this operation. Moreover, the work is frequently done imperfectly, so that satisfactory adhesion of the outer sole is not secured, with the result that the shoe is defective. This defect is particularly serious when it occurs at the tip, or at the shank,

at which points the upper is frequently open with shoes of this type.

The object of my invention is to provide a form of ornamental binding tape which is adapted to be attached to the edge of an lnnersole in the rusual manner, and which, when in position, will provide the sole with an ornamental, or finished edge, and will also provide the edge portion which extends onto the under or outer side of the inner sole with a surface to which the cement, which is ordinarily employed for attaching the outer sole, will firmly adhere, so that the expense of the bufiing operation above referred to, with vits attendant disadvantages, will be eliminated.

`I accomplish this object by providing a sheet of textile material, one surface of which is coated with Pyroxylin, or similar cellulose material and the other surface of which is uncoated and therefore porous and of a character to which an adhesive connection may be made, cutting the sheet into strips of suitable uniform width, applying a suitable softener to an edge portion of 'the Pyroxylin coated surface, so that such portion of the surface becomes activated and then folding the activated edge portion onto the coated side, so that the 'coated surfaces are pressed together until they become adhesively connected, leaving the uncoated side of the strip portion, which has been folded over, exposed, so that a binding strip is produced having the greater portion of its surface coated with waterproof material and one edge portion of which is uncoated, and to which an adhesive connection may be made.

In applying thestrip thus produced to the edge of an lnnersole. the strip is so positioned that the coated surface portion extends over the edge and top side of the sole and the uncoated surface portion is laid onto the under side of the sole, the binding as thus arranged being held `in position by stitching in the usual manner.

For a more complete disclosure of my invention reference is now made to the following specification, in connection with the accompanying drawings in which:-

Fig. l is a plan view of the uncoated or bottom side and Fig. 2 a similar view of the coated or top side of a section of strip material.

Fig. 3 is a sectional view, at line 3-3 of Fig. 1 on an enlarged scale.

Fig. 4 is a pian view of the top side ofthe finished strip and Fig. 5 is a sectional view at line 5-5 of Fig. 4.

Figs. 6 and 7 are plan views of the top and bottom sides respectively of an inner sole to which the binding has been applied.

Fig. 8 is a sectional view ofone edge portion of the sole after the outersole has been attached.

Fig. 9 is a perspective view of an open shank shoe provided with an inner sole embodying my invention.

Fig. 10 is a sectional view at line Ill-l0 of Fig. 9.

In producing a binding made in accordance ywith my invention I provide a strip a of thin textile material of uniform width one side of which is completely coated with Pyroxylin," or similar cellulose compound, which will have been applied to the material while in sheet form, or before it has been cut linto strips. The width ofthe strip is approximately one fourth greater than the desired width of the finished strip and the opposite side from the coated side is uncoated and therefore is sumciently absorbent to receive and retain an adhesive. Approximately one half the coated side is then treated with a suitable cellulose softener and an edge portion b, approximating to one fourth the total width of the strip is immediately thereafter folded over onto the coated side, and pressed firmly thereagainst and held until the coated surfaces which have been activated by the softener become united. 'I'he edge portion b thus becomes securely adhesively.

connected to the main portion of the strip, as indicated in Fig. 5.

About two thirds of the surface of the strip thus produced is coated with a waterproof ornamental finish and the remainder is uncoated and when an innersole, as c, is bound therewith, the binding is placed in such a position that the edge and top edge portion of the sole will be covered with the coated portion of the strip, as indicated in Figs. 6 and 8, and the bottom edge portion will be covered by the uncoated portion, as shown in Fig. 7, the binding being held in position by stitches din the usual manner.

As the surface portion of the binding which is on the bottom side of the sole is uncoated, when the outersole is adhesively attached thereto, perfect adhesion will be secured, without previous preparation, between the outer sole e and the edge portions of the inner sole which are not covered by the upper of the shoe, as indicated in Fig. 9, in which the entire shoe is illustrated to which the outer sole e is adhesively connected, and in the sectional views of Figs. 8 and 10.

I claim:

1. An inner sole having an edge binding connected thereto consisting of a strip of textile material of uniform width, one side of which is coated with an ornamental cellulose material and the other side of which is uncoated and absorbent, the coated portion of the binding being disposed on the edge and top edge portion of the sole so that the coating is exposed, and the edge portion on the bottom side of the sole being folded over against the coated surface and adhesively connected thereto so that an uncoated surface is presented on the bottom side of the sole for adhesion to an outer sole.

2. An insole having an edge binding comprising a flexible strip coated with finishing material upon one side only, said strip being applied over the edge and the adjacent marginal portions of both faces of the insole with the uncoated side of the strip next to the insole, the part of the strip located upon the sole-attaching face of the insole having a marginal portion thereof folded over upon the coated side of the strip so as to expose the uncoated side of the folded-over portion, and means for securing said folded-over portion of the strip to the body portion thereof and said strip as a whole to both faces of the insole.

3. A shoe comprising an insole, an edge binding consisting of a exible strip coated with finishing material upon one side only, said strip being applied over the edge and adjacent marginal portions of both faces of the insole with the uncoated side of the strip next to the insole, that part of the strip on the sole-attaching face of the insole having a margin thereof folded over upon the coated side of the strip so as to expose the uncoated side of said folded-over portion, fastening means extending through said folded-over portion and securing said strip to both faces of the insole, an upper comprising a plurality of spaced elements having end portions secured in overiasted positionupon the lower face of said insole and upon said folded-over portion, and an outsole secured by cement in certain localities to .said elements and in other localities to said folded-over portion.

4. An insole having an edge binding comprising a flexible strip of textile material coated with finishing material upon one side only, said strip being applied over the edge and adjacent marginal portions of both faces of the insole with the uncoated side of the strip next to the insole, the part of the strip located on the sole attaching face of the insole being covered by a reinforcing strip portion which is adhesively secured to the coated surface of the strip and has an uncoated absorbent outer surface to which an outersole may be attached, and means for securing said strip as a whole to both faces of the insole.

MAYNARD H. MOORE, JR.

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