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Publication numberUS1522890 A
Publication typeGrant
Publication dateJan 13, 1925
Filing dateSep 23, 1922
Priority dateSep 23, 1922
Publication numberUS 1522890 A, US 1522890A, US-A-1522890, US1522890 A, US1522890A
InventorsTeodoro Krap
Original AssigneeTeodoro Krap
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Elastic insole
US 1522890 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

T. KRAP Patented `lan. 13, 1925. l


ELASTIG IN SOLE Application filed September 23, 192 2. Serial No. 590,023.

To all whom z't may concern:

Be it known that I, Tnonono KRAP, a citizen of Germany, residing at Mexico city, Federal District, Republic of Mexico, have invented a certain. new and useful Elastic Insole, of which the following is a specification.

The invention relates to thin insoles to be worn within the socks `or stockings, and the object of the invention is to provide a simple, easily applied and inexpensive insole having the required'elasticity to mold automatically to the sole of the foot, and having absorbent and other qualities sby which perspiration and exudations are absorbed and the foot protected from exterior cold and moisture, and the sensitiveness and tendency of the foot to perspire is reduced.

The invention consists in certain novel features and `details of construction and arrangement by which the above and other objects are attained, to be hereinafter described and claimed.

The accompanying drawings form a part of this specification and show the invention as it hasbeen carried out in practice.

Figure 1 is a plan or face view of a simple form of the insole before folding and application within the sock or stocking.

Figure 2 is a corresponding view showing the same in the partially folded condition.

F igure 3 is a side view of the same after application and use.

Figure 4 is a plan view of a supplemental insole to be superposed upon the insole shown in Figure 1.

Figure 5 is a section through the double 'insole thus formed, taken on the line 5-5 in Figure 4.

Referring'to Figures 1, 2 and 3, the insole consists of a rectangular strip of long fibre paper corrugated, rppled, or craped transversely, having a body portion 10 of the same width as the foot of the wearer at its widest part and somewhat longer than the foot.

In applying the insole the wearer holds it extended upon the bared sole ofthe foot with portions projecting slightly beyond the latter at the toes and heel. The excess length at the front is folded over upon the toes and while thus held is inserted within the sock which has been partially turned to facilitate such insertion; the sock is then drawn upon the foot and the excess length at the heel folded automatically upon the latter.

In order to avoid an excess ofmaterial at the toes, a corner at the outside of the insole is removed by :in angular cut as 11 so that n folding the paper upon the toes a pocket oo is formed conforming to the contour of the toes without excessive thickness at any part. The paper is of such character as to resist wear and by reason of the transverse crinkles or corrugatons, is elastic in the direction of the length of the foot, and has the property of absorbing dampness such as the natural exudations of the foot when confined in the shoe.

By moderately saturatingthe insole with paraffine the foot is protected against the noisture of the` ground, and in some instances the upper face of the insole is given a thin coating of tallow which may if preferred be medicated, and which tends to soften the skin'of 'the foot-sole and effect a cure of excessive foot perspiration. When using the paraffined insole it is preferable to employ a second insole, not paraffined, to lie next the sole of-the foot and thus 8 lessen the feeling of cold due to the paraffine. y g

The most complete and eficient form of the invention is jshown in Figures 4 and 5 and is designed to meet the exlgencies of the 8 When walking these varation's in size are continuous and the length further increased l by the upward curvature of the toes followed by a returnto the horizontal or plane position and a subscquent shrinking. These movements are not prevented by the shoes and the flcxibility of the leather formin'g the shoe-upper even permits the curvature of the toes, but the shoe-sole retains its form and size and a continuous fricton results between the sole of the shoe and the sole of the 100.

foot which is not suficiently met by the sock and causes wear of the latter. The longitudinal elasticity of the single insole, due to the transverse corrugation's, is sufiicient to meet the rubbing produced by the successive changes in the length of the foot, which are the important variations, but does not pro- Vide for the continuous changes -in width.

`The form shown in these Figures 4 and 5 provides for both types of variatons. This is accomplished by superposing upon an insole 10 having transverse corrugatons a second insole 12 having its corrugations arranged longitudinally soas to expand and contract transversely or laterally, and in order that the effects of the elasticity of the two insoles shall not counteract eachrother the upper insole 12 is provided with two slits or cuts 13 and 14, the former before the two points of supportfor the foot, as at the root of the toes, and the other in the middle between the ball of the heel and those two points of support, that is, under the arch of the foot.

Thus arranged the lower insole 10 follows' perfectly the movements of the foot in the longitudinal di'rection, while the upper in- Sole 12 follows perfectly the movements of the foot in the transversal direetion, with correspon'dingly beneficial effects upon the `ness and fatigueof the soles of the feet, especially when treated with a thin coatingof tallow as above. described. They prevent the formation of 'callousness, and prolong the useful life of the socks and stockings by lessening the frictional wear to which they aresubjected and by avoiding the deterioration due to moisturecaused by perspiration.

I claim 1-- p 1. An insole comprising two superposed layers of corrugated paper having the corrugations of one layer extending transversely andthose of the other longitudinally of such insole, and adapted to be worn within the sock or stocking. t A' 2. An insole comprising two superposed layers of corrngated paper having the corrugations of the lower layer extonding transversely of such insole, and' the corrugations of said 'upper layer extendng longitudinally of such insole, sad upper layer being elastic laterally.

3; An insole consistingof a rectangular strip of corrugated paper having a body portion of substantially the same widthas the widest part of the foot of the wearer and slightly longer than the foot, there being an angularlycut portion at the toe foldable to form a 'toe-receiving pocket, the excess length being automatically foldable upon the heel as the sock is drawn'upon the foot.

4. An insole consisting of a reetangular strip of corrugated paper having a body portion of substantially the same wdth as` the widest part of the foot of the wearer and slightly longer than the foot, the excess 'length being automatically foldable upon the heel as the sock is drawn upon the foot, the

strip having at the toe-end a portion removed at an angle to the length to avoid excess of material over the toes.

In testimony that I claim the invention above set forth I afix my signature hereto. TEODORO KRAP.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2537156 *Dec 18, 1947Jan 9, 1951Samuel PennellInnersole having upwardly foldable portions
US2617208 *Apr 1, 1949Nov 11, 1952So Lo Works IncRubber footwear
US2664087 *Aug 16, 1950Dec 29, 1953John J LawlerMedicinal slipper
US3148463 *Oct 18, 1962Sep 15, 1964Douglas G Tibbitts JrDisposable tissue sock
US4132016 *Oct 25, 1977Jan 2, 1979Franco VaccariShoe, particularly for general sporting activities and training
US4598485 *Jun 10, 1985Jul 8, 1986Joe Chun ChuanSlip-resistant disposable shoe cover
US5054148 *Mar 22, 1989Oct 8, 1991Paragon Podiatry LaboratoriesOrthotic with textured surface and method for producing same
US5606807 *Dec 26, 1995Mar 4, 1997Prepodnik; Ronald W.Disposable shower thong
US6449878Mar 10, 2000Sep 17, 2002Robert M. LydenArticle of footwear having a spring element and selectively removable components
US6601042May 17, 2000Jul 29, 2003Robert M. LydenCustomized article of footwear and method of conducting retail and internet business
US7016867May 21, 2002Mar 21, 2006Lyden Robert MMethod of conducting business including making and selling a custom article of footwear
US7107235Oct 24, 2002Sep 12, 2006Lyden Robert MMethod of conducting business including making and selling a custom article of footwear
US7752775Sep 11, 2006Jul 13, 2010Lyden Robert MFootwear with removable lasting board and cleats
US7770306Aug 23, 2007Aug 10, 2010Lyden Robert MCustom article of footwear
US8209883Jul 8, 2010Jul 3, 2012Robert Michael LydenCustom article of footwear and method of making the same
US20120025480 *Jul 28, 2009Feb 2, 2012Marco Skates Ltd.Size-adjustable footwear
WO1998033407A1 *Feb 2, 1998Aug 6, 1998Viitanen MattiInsole
U.S. Classification36/44, 36/9.00A, 36/10, 604/293, 2/239, 36/140
International ClassificationA41B11/00
Cooperative ClassificationA41B11/00
European ClassificationA41B11/00