US2069864A - Innersole with attached rib - Google Patents

Description

Feb. 9, 1937. w v E mE' 2,069,864

' INNERSOLE WITH ATTACHED RIB Filed Dec. 24, 1934 5 4 W r I Patented Feb. 9, 1937 UNITED STATES PATENT oFHeE 2,069,864 INNERSOLE WITH ATTACHED RIB Percy W. Valentine, Brooklyn, N. Y.

Application December 24, 1934, Serial No. 758,946

3 Claims.

-The present invention relates to innersoles for use in making welt shoes, and is concerned with improvements in the structure of innersoles of which the stitch-receiving rib is an originally separate piece of stock and is bonded to the body of the innersole. One phase of the invention resides in making the rib from a strip such as shoe welting or the like and splitting it inward from one edge through a fraction of its width to form a base flange, or two base flanges. Another phase of the invention consists in means and methods of attaching the rib strip to the innersole body, including that of forming an integral flap from the substance of the innersole and, interengaging it with the welt strip. Various embodiments of the invention are illustrated in the drawing herewith and are described in detail in the following specification.

rib;

Figs. 4 and 5 are related fragmentary sectional views of a welt strip and innersole body adapted to be connected and reinforced with the aid of an integral flap of the body;

Fig. 6 is a sectional fragmentary perspective View showing the assemblage of the parts represented in Figs. 4 and 5;

Figs. 7, 8 and 9 are fragmentary sectional perspective views similar to Figs. 4, 5 and 6 respectively illustrating a similar mode of uniting a split welt strip Fig. 10

to the innersole body; is a fragmentary sectional perspective view showing a form of rib made from the type of welt strip shown in Fig. 2 by cutting away one of the flanges provided by slitting the strip;

Fig. 11

is a fragmentary perspective sectional view similar to Figs. 6 and 9, showing the strip of Fig. 10 in connected union with the body of the innersole.

Fig. 12

is a similar view showing the strip of Fig. 10 applied as in Fig. 6.

Referring first to Figs. 1, 2 and 3, a represents the body of an innersole and 1) represents the rib thereof.

The body may be made of any stock suitable for innersoles, as leather, leather-board, water laid cellulose fibers bonded with rubber latex, etc., and may be cut from a sheet of such stock of any quality and thickness adequate to afford the requisite strength of an innersole. The rib may be made from a strip of any of the same materials. A practical and convenient source of the strip material is the welting provided commercially for use in the manufacture of welt shoes. Such welting is made of leather and other materials and is produced in different widths and thicknesses all, or at least many, of which are suitable for my purpose.

The welt strip is slit longitudinally, inwardly from one edge for a fraction (preferably in the neighborhood of one half) of the width of the strip, and in any desired location (but preferably about midway) between the side faces of the strip. The slit so formed is shown at c in Fig. 2.

It produces two flaps or flanges d and e which are bent outwardly into a plane, as shown in Fig. 3, and laid against the face of the innersole body in a line conforming approximately to the outline of the body, as shown in Fig. l. The bending out of the flanges and laying of them against the body may be, and preferably is, performed in one operation by a folder through which the slitted strip is passed at the same time that the body is fed past the delivery end of the folder in a path causing the strip to be applied to it in the desired outline.

Either before or during the application of the strip to the sole, the under side of its fianges, or the adjacent face of the sole, or both, are coated with adhesive adequate to make a secure bond between the parts. In this specification the term cement will generally be used as a generic term to designate any or all of the various adhesives which may be used for the purpose; and the verb forms of the same word will be used to designate the step of applying such adhesive or the action of uniting the body and rib together by means of such cement. I find it convenient to use a cement which may be applied to the body in advance of the assembling operation, of which the character is such that it will partially dry to a non-tacky condition, but will make a secure bond when the parts are pressed firmly together over the ocmented areas.

The assembled parts may be additionally reinforced and secured by a fabric layer a, such as cotton duck. Such layer may be a sheet of duck wide enough to overlie the entire area bounded by the rib and extend up on the inner side of the rib, as shown in Fig. 3, or it may extend only to the rib overlying the inner base flanges thereof, or it may envelop the rib. Alternatively, the layer may be a strip wide enough to overlie the inner flange of the rib and an adjacent zone of the body, or to overlap also the inner side of the rib,

The use of such layer sheets or strips is so well,

between the body and turned up flap Land cementing the contiguous surfaces of the strip, body and flap together. The channel may either be cut inward from the edge of the body, or outward toward the edge from a line similar to the outline of the body; and the strip may be laid either in the inner angle or the outer angle formed between the upturned flap and the, body.

The rib or welt strip last described has only a single base flange 6'. But the same means of attachment may be employed with a strip similar to the strip bin having two flanges. Such a strip is shown at b in Figs. 7 and 9. One of the outturned' base flanges as d of the strip is laid in a channel g out in the surface of the sole and overlaid by the flap f. The other flange e of the rib rests on the marginal part of the body. The channel 9' may be out with greater width, providing a flap wide enough not only to cover the flange d butalso to extend along the body of the rib like the flap in Figs. 6 and 12.

The rib 1) shown in Figs. 10 and 11 is formed by slitting a welt strip, as shown in Figs. 2 and 7, andcutting off one of the resulting flanges. The remaining flange d is bent out and laid against the face of the body. The shoulder h leftwhere the cut off flange has been removed makes an additional surface for adhesion with the body; Between this narrow surface and the bend of flange d is a shallow groove 1 (Fig. 11) which may contain a quantity of cement in addition to that spread on the contact surfaces The ribs constructed as shown in Figs. 6, 9 and 11 may also be reinforced by fabric as shown in Fig. 3, or in the alternative ways described with reference to Fig. 3.

j A valuable feature of all the forms of rib here shown is that a rib of sufficient thickness may be made by a single strip of welting, or equivalent rib material, without reinforcement, and may be applied directly to the innersole body just asit comes from the roll or other form or container in which it is purveyed to the user. 7

What I claim and desire to secure by Letters Patent is:

1. An innersole consisting of a body and a rib formed of welt material, the thickness of which from one edge through a fraction of its width is a fraction of the thickness of the remaining por tion of the strip, the thinner and thicker fractions being divided from one another by a shoulder substantially perpendicular to'their side faces,

and the thinner fraction forming a flange which is bent at an angle to the main, part of the rib and cemented to the surface of the body.

2. An innersole consisting of a body and a rib formed of welt material, the thickness of which from one'edge through a fraction of itswidth is a fraction of the thickness of the remaining portion of the strip, the thinner and thicker'fractions being divided from one another by a shoulder substantially perpendicular to their side faces, and the thinner fraction forming a flange which is bent at an'angle to the main part of the rib and cemented to the surface of the body, the angle between such shoulder and the bent flange providing a groove containing a quantity of cement in addition to that spread on the contact.- ing surfaces of the rib and. body.

3. An innersole as set forth in claim 1 and comprising further an integral flap on the body turned up and cemented to a'side of the rib.

PERCY W. VALENTINE.

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