US2027328A - Insole - Google Patents

Description

c. rwl-:EDIE

INSOLE Filed July 5, 1955 atented Jan. 7, 1936 g UNITED STATES PATENT OFFICE INSOLE Charles Tweedie, Jefferson City, Mo., assignor to Tweedie Footwear Corporation, Jefferson City, Mo., a corporation of Missouri Application July 5, 1933, Serial No. 679,061

3 Claims. (Cl. 36-22) My invention relates to the manufacture of the top member continuously to the snipped toe shoes. It is especially concerned with the insole. end of the, lower layer. The lower layer is slit Its principal objects are to simplify the manufacinwardly from both its side edges just forward turing operations, provide for the use of less exof the cemented heel portion thereof, as indicated 5 pensive material in the insole and still obtain a at l, and also at points close to the front end of .f better and more flexible shoe, and to obtain other the shank stiffener, as indicated at 8. The free advantages hereinafter appearing. The invenor loose marginal portions 9 of the lower layer, tion consists principally in the insole and in the that is, the portions thereof outwardly from the method of attaching the upper thereto hereinstitching are then bent back along the line of 10 after described and claimed. stitching so as to' stand out as a leaf or flap at 1o In the accompanying drawing, wherein like a considerable angle from the top layer. reference numeralsreferto like parts wherever Preferably, the insole above described is made they occur, and handled as a separate article of manufacture.

Fig.` 1 is a bottom plan view of an insole em- It may, however, be made and embodied in the bodying my invention, shoe in a continuous operation. In such case, the i5 Fig. 2 is a longitudinal section through the top layer l may be tacked to a last, the shank forepart ofthe insole on the line 22 in Fig. 1, stiffener 4 tacked thereon and the lower layer 2 Fig. 3 is a transverse section through the shank cemented t0 the tOD member by any Suitable adportion of said insole on the line 3-3 in Fig. 1, hesive with the margins of the shank and fore- Fig. 4 is a View similar to Fig. 1 showing the Dart of the lower layer left free and bent back at 20 upper lasted to the insole, a considerable angle to form the leaf or flap or Fig. 5 is a fragmentary section on the line 5-5 leaves 9. in Fig. 4, Then the upper I0 is pulled over a last and its Fig. 6 is a View similar to Fig. 4, showing the margins Il are secured to the leaf or free marshoe as it appears after the removal of the excess ginal DOYtOn Of the lower layer Of the nSOle alOng 15 lasting allowance of the upper end of the leaves the fllll length thereof on both sides of the shoe,

or lips of the lowerflayer of the insole, as by staples I2 or other suitable devices. The Fig. '7 is a fragmentary crossf-section on the lasting allowance I3 of the upper is then stitched, line l-'l in Fig. 6, cemented or otherwise suitably secured to the fao Fig. 8 is a fragmentary cross-section on the marginal portion of the top layer beyond the 30 #Aline 8-8 in Fig. 6, stitching 6V which secures the lower layer thereto. Fig. 9 is a bottom plan view of the shoe with After the upper is thus secured to the margin of the outsole secured thereto; and ,the top layer of the insole (sufficient time being Figs. 10 and 11 are bottom plan views of inallowed for drying of the cement, if cement soles of modified construction. is used), the excess material, both of last- 35 in the construction illustrated in Fig.' 1 the ing allowance 0f the upper and of the leaves or insole comprises a top layer I of leather or other lips of the lower layer of the insole, is cut away suitable material and a lower layer 2 of leather as closely as practicable to the stitching which or other suitable material.v Both of these layers holds together the top and lower layers of the 40 are of full length except that the front tip of the insole. The material thus cut away carries with 40 10We1 layer iS Shipped Off. aS indlated ab 3- Beit the staples, stitches or other fastenings used tween these two layers is a shank stiffener 4, prefto temporarily hold the edge portion of the lasterbly Of metal, 1S tacked at I'Ont ing allowance of the upper to the leaves or free and rear ends to one of the 1ayers, preferably the marginal portions of the lower layer of the insole. "10P layer' The heel P01110 f the two layers Along the shank and heel the lasting auowance are cemented together the thereof, eX- is along a located between the edge cept that the shank stiffener is between them. The portions of said layers forward of the shank thereof and the fasteners thereby permlttmg these fasteners to remain in the shoe. In this are also cemented to ether exce t for abroad marginal strip 5 whiclgi is left uncmented. condition me Shoe 1S ready to recelve the out' 50 The two layers of the insole are stitched to- S016 "f Whlch may be apihed thereto in any gether by lines of stitching 6 on opposite sides of usual manner' as by stitchmg l5 Cementing or and as Close as practicable to the metal Shank otherwlse. It is noted that the removal o1' the stiffener. These lines of stitching extend forfree leaves 0r marginal POItlOIlS 0f the IOWel' wardly substantially parallel with the margins of layer Of the inSOle together with the Surplus 0f 55 continuous with the lasting allowance of the y, upper, with no substantial rib or hollow between them. It is also noted that lasting allowance terminates at the sides of the shank stiifener substantially ush with the ridge formed thereby, thereby providing for greater compactness along the shank of the shoe.

The invention hereinbefore described has a number of important advantages. On account oi' the metal shank stiflener being pocketed tightly between the upper and lower layers, it can not squeak the wav the ordinary shank -stifi'ener sometimes does. The insole. being made of two relatively thin layers. is more flexible than a comparable insole with a single layer; and if still greater ilexibility is desired, it is feasible to cut slashes entirely through the lower layer `and partway through the top layer without sacriiice of wearing quality. Likewise, it is feasible to effect a considerable saving in cost because the top layer of the insole may be made of thinner material than usual and the lower layer of less expensive material so that the combined cost of the two layers is less than the cost of a' comparable insole of a single layer. Likewise, my invention has the advantage that it does not leave in the forepart of the shoe any tacks, staples or fasteners used as temporary aids in the lasting operation, nor does it require any special operation for the removal thereof, because all such devices are, in my process. cut away with the surplus lasting allowance. It is noted also that in comparison with the common practice, my process involves fewer operations.

The insole hereinbefore described admits of modification. lower layer 2a of the insole forward of the shank may, for the sake of economy, be made narrower than the top layer, provided that the leaf or free marginal portion la thereof beyond the stitching la' is sumciently wide to receive the staples or other fasteners by which the lasting allowance Thus, as ilustrated in Fig. 1l the of the upper is secured thereto in the lasting operation.

Flg. l0 illustrates another modiiication wherein the metal shank stiifener I0 is tacked to the insole I1 and nrmly secured against movement by 5 a second layer Il secured by lines of stitching Il as close as practicable thereto along the sides and ends thereof. In this case, the lower layer Il extends from the back of the heel to a point iust forward Iof the front end of the shank and is 1o firmly cemented to the top layer I1. In such case, the front portion of the insole may be channeled or otherwise adapted for connection to the upper in any known way; or there may be another section of the lower layer conforming to 15 the corresponding portion of the lower layer iirst described.

What I claim is:

1. An insole comprising a top layer, a lower layer and a shank stiii'ener interposed between 20 them, said layers being secured together by lines oi' stitching extending close alongside of said stiifener and substantially parallel with the edge of the top layer at a distance inwardly therefrom, the marginal portion of the lower layer 25 orward of the shank being turned back free from he top layer.

2. An insole comprising a top layer, a lower layer and a shank stinener interposed between them, said layers being secured by lines of stitchso ing extending close alongside of said stiifener and substantially parallel with the edge of the top layer at a distance inwardlytherefrom, said layers being connected together except that the marginal portion of the lower layer forward of the so -shank is left free to constitute a stitch-receiving nap.

3. An insole comprising a full length top layer, a shorter lower layervcemented thereto anda shank stinener interposed between them, and ao substantially coterminous with the shank portion thereof, said lower layer being similar in size and shape to the portion of the top layer from the back end thereof as far forwardly as the tip of the stiffener and said layers being also secured together by lines of stitching extending close alongside of said stiifener.

CHARLES

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