US3406468A - Shoe with cushion insole - Google Patents

Description

Oct. 22, 1968 J. PUJOL. 3,406,468

SHOE WITH CUSHION INSOLE Original Filed July 25, 1963 2 Sheets-Sheet 1 FIG. I

FIG. 2

INVENTOR. JAI ME PUJOL BY I @WW/AZAI-W ATTOR NEYS Oct. 22, 1 PUJOL SHOE WITH CUSHION INSOLE 2 Sheets-Sheet 2 Original Filed July 5, 1963 m m L mm U P E M m J J d W yr/r 'mfi- ATTORNEYS United States Patent 3,406,468 SHOE WITH CUSHION INSOLE Jaime Pujol, Calle F. Krug 56, Terraza del Parque,

. Sant'urce, Puerto Rico 00911 Original application July 3, 1963, Ser. No. 292,648, now

Patent No. 3,314,092, dated Apr. 18, 1967. Divided and this application Feb. 8, 1967, Ser. No. 614,743

4 Claims. (Cl.'36-2.5)

ABSTRACT OF THE DISCLOSURE A light flexible shoe including a two-ply insole recessed to contain a cushion element therein and having its upper and its lining secured respectively to the inner and outer faces of the insole.

This application is filed as a division of my copending application Ser. No. 292,648, filed July 3, 1963, now US. Letters Patent 3,3l4,092.

The invention comprises a new and improved shoe structure of the cushion type resulting in a shoe of light weight and strong construction which at the same time follows accurately the fine lines of the last-upon which the shoe is made.

The invention also includes within its scope a novel insole unit which includes the sock lining as one ply and also an enclosed cushion ply which is arranged to be exposed in the lasted shoe bottom.

A characteristic feature of my novel shoe structure is that the lining integument of the upper is secured to the inner face of the insole in such a manner as to present a rolled edge inside the shoe, while the outer integument of the upper is lasted to the outer face of the insole.

These and other features and advantages of the invention vwill be best understood and appreciated from the following description of a preferred manner of carrying it out as shown in the accompanying drawings in which:

FIG. 1 is a plan view of one of the insole plies,

FIG. 2 is a plan view of the sock lining ply of the insole unit to which is attached the cushion ply,

FIG. 3 is an edge view corresponding to FIG. 2,

FIG. 4 is a plan view of the assembled insole and sock lining plies,

FIG. 5 is a view in perspective of the closed and lined FIG. 6 is a view suggesting the step of stitching together the lining of the upper and the insole unit,

FIG. 7 is a fragmentary view showing the gauge used in this operation,

FIG. 8 is a plan view showing the insole unit as stitched to the lining flange of the upper,

FIG. 9 is a view in perspective showing the lasted shoe, and

FIG. 10 is a fragmentary cross-section of the lasted shoe.

In preparing the insole unit a blank 10 of the proper shape is first cut from stiff fiberboard or insole board and in this blank is defined a removable area 12 by means of slits which hold it in semi-detached condition. The area 12 occupies generally the metatarsal portion of the sole blank and extends rearwardly to the heel breast line. Transverse slits 13 are formed in the edge of the blank at the toe portion and slits 14 at substantially the heel breast line.

The sock lining ply 15 of the insole unit is shown in FIG. 2. This ply is of upper leather or other sock lining material and corresponds in contour to the insole blank 10. Secured to its inner face is a cushion ply of foam rubber or the like having a forepart 16 and a heel seat portion 17. This sock lining ply 15 is also provided with "ice transverse slits 18 at the toe end and slits 19 'at the heel seat end. The slits 18 and 19 are located in the vicinity of the slits 13 and 14 of the insole ply but they do not register so that no bunch is formed in the composite insole unit when the flange of the upper lining is subsequently drawn inwardly through the slits.

The closed upper 21 as shown in FIG. 5 is provided with a fabric lining 22 and this lining is provided at both sides with flanged extensions 23. The lining is cemented to the upper 21 except in the area of the flanges '23. The flanges are provided with transverse slits 24 and 25 in locations corresponding approximately to the transverse slits already described in the insole unit.

The upper and insole units are assembled and united off the last as suggested in FIGS. 6 and 7, that is to say, the flanges 23 of the lining are overlapped by the margin of the insole unit and stitched together by a line of stitching 26 on each side of the upper. The outer integument 21 of the upper is not touched at this time. This operation is facilitated by a gauge 30 having a slot 31 in which is received the edge of the insole unit and a notch 32 in which is received the edge of the flange 23 of the lining, It will be understood that the insole unit on account of its stiff ply 10 presents a solid and well defined gauging edge. The two components of the shoe are thus brought accurately into registration and united by the stitch line 26 as the assembled parts are drawn through the gauge 30. The inner edge of the lining is guided into conformity with the bulge in the sock lining caused by the enclosed cushion ply 16-17.

At the conclusion of the stitching operation the ends of the lining flanges 23 are brought up edgewise through the transverse slits of the insole unit and cemented to the flat underlying face of the ply 10 as shown in FIG. 8.

When the plies 10 and 15 of the insole unit are united by cementing them toegther the enclosed cushion ply 16-17 causes the sock lining ply 15 to bulge outwardly and follow the contour of the cushion in the area marked 15 in FIG. 4. The marginal portions of the ply '15 are skived or roughened in areas 20 to facilitate a cement bond between them and the flanges 23 of the lining.

As shown in FIG. 6 the flanges 23 are laid flatwise just within the skived margins 20 of the insole, cemented in place and secured by the stitch line 26 which runs close to the contour of the bulge 15' of the insole. The flanges 23 of the lining are then folded outwardly, one after the other, and cemented to the skived margins 20 of the insole, thus making a close edge jointure with the outer edge of the insole and producing a rolled edge in the lining inside the shoe. The last may be slipped into the shoe at this stage or immediately after the lining extensions are folded and cemented to the insole unit.

The last 33 is shown in the upper as indicated in FIG. 9 thus presenting the assembled parts of the shoe in convenient position for the side, toe and heel lasting operations. The lasting margin 27 of the upper is shown as cement-lasted to the outer surface of the insole while the linin 22 is cemented to the inner surface. The removable area 12 of the insole blank 10 is now removed thus making space for the cushion ly 16 which has been enclosed in the sock lining and increasing the flexibility of the insole as a whole by removing a substantial area of the stiff material of this ply. The shoe may now be completed by laying and attaching an outsole 28. It is desirable to leave the area 12 in place until the last has been inserted as it gives increased stability to the upper, but if desired that area may be removed at an earlier stage of the process.

Having thus disclosed my invention and described in detail an illustrative embodiment thereof, I claim as new and desire to secure by Letters Patent:

two-ply insole recessed and containing a cushion element therein and having a lined upper of which the lining is united to the inner surface of the insole and the upper itself lasted to the outer surface of the insole the lining of the upper being cemented at its edge to the inner surface of the insole and folded outwardly to present a rolled edge inside the shoe.

2. A shoe as defined in claim 1, having an insole unit of two coextensive plies transversely slitted in spaced locations in their overlapping edges, and said lining ply being stitched to the insole un it between the slits of said plies, brought through the slits at both ends of the stitching and cemented to the outer face of the insole unit.

3. A shoeas defined in claim 1, having an insole unit including a sock lining ply and an enclosed cushion ply, an upper having a lining with the longitudinal extension cemented fiainge of the lining. v

Q i Y I I lieferences Cited UNITED STATES PATENTS 2,502,774 4/195 O Alianiello 36-44 X 2,634,441 4/1953 Herlihy. r

2,964,766 12/1960 Sillman et al.

3,270,359 9/1966 Burshtyn.

, PATRICK D. LAWSON, Primary Examiner.

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