US2109706A - Corrective insole for shoes - Google Patents

Description

March 1, 1938- G. E. MUSEBECK 2,109,706

CORRECTIVE INSOLE FOR SHOES Filed De'c. 14, 1935 INVENTOR. G50/wf' E. Masf'fc/f,

ATTORNEYS,

Patented Mar. 1, 1938 UNTZED STATES 'PATENT orrics :CORREC-TIVE INSQLE .FR .SHOES George E. Musebeck, Danville, Ill.

8 Claims.

This invention relates .to :a corrective insole -for shoes.

The invention relates primarily to an 'insole having a supporting extension :on its inner edge vbut certain features are applicable V.as Well to in- .soles without such extensions. .the prior art, it has been common practice itoform the extension integrally with the insole proper. .Such practice requires the vrformation of the stitching channel by 'hand since channell-ing machines cannot he used. It valso introduces .a point of weakness ,at the stitching channel .along the hase of the extension at the point where the .construction should vbe the stiffest. In my prior Patent No. 1,916,198, issued July 4, 13933, I have .shown an insole having an .extension integral With the insole proper :and having a Wedge apiece placed beneath :the inner side `oi :the insole proper, the channelling being formed in the AWedge piece. This construction makes it possible to' use a channelling machine ibut introduces an nndesirable bulge in the ,side of the Ashoe lasting. It does not permit the .use of :a standard for-m of insolewhich can `be purchased in the open market since extension insoles must be made to order.

'In the :present construction, the extension is formed on Va Wedge piece inset in `the insole proper, the insole preferably being :split to accommodate the wedge. The -Wedge piece itself is formed to give a corrective pressure falen-g the inn-er side oi the foot, which aids the extension in correcting inrolling or pronation of the foot. Preferably, the Wedge piece extends Well hack u. into the heel and the extension Ahas its greatest width adjacent the breast of :the heel, .thus applying the maximum v,corrective pressure :at the forward inner corner of the heel where interference with the nerves and blood supply is a minimum. In one form of the invention, theextension is carried completely through the shank Vpor tion of the insole to give lcorrective pressure lover that part of the foot When pressure :at the heel is not sufcient to correct the inrolling. .Tn 10ertain cases also, the Wedge portion is carried for-- Ward of the shank to provide an additional support for the metatarsal arch of the foot.

In other cases Where an extension is not necessa-ry;v he wedge piece itself is inset in the insole and is carried back to the heel for straightening the loot, and forwardly of the shank portion to give metatarsal arch support.

The insole formed according to this invention has the advantages that the insole prop-er is of a standard block shape which may be purchased Application December 14, 1935, ASerial No. :54,381

(Cl. Bti-71) von .the open market and the ychannelling :out Iand welt Areceiving k.recess .are standard in `every Way Aand -can loe-cut by machinery. At the same time, the extension being in :a-.separate piece Loan lbe .made yasweak or .as strong .as desired since its thickness does not .depend upon the thickness ci :the insoleproper. The thickness of the extension is .preferably less than that of the insole proper .and therefore ,can .be turned up Within the upper Without producing an unsightly bulge in the side of theshoe.

The full natu-re .of the'invention be understood lfrom the .accompanying :drawing andthe followingid-escription and claims:

Fig. l is :a bottom view `of vone form of an insole for .the lett foot having .the extension through both the heel and shank portions. Fig. .2 is a perspective vievv of :a similar insole for the right v:toot shewingthe manner of assembling the outsole proper .and the Wedge piece. Fig.. V3 :is a sectional view taken `substantially on :the line 3 3 of Fig. 2, the insole being Acompletely assembled. Fig. 4 is a similar view taken on the line l of Fig. ,2. Fig. 5 is fa View similar .to Fig. 1 showing .an insole for the left foot :having the heel type z of extension only. Fig. 6 is a view similar to Fig. 2 showing the .assembly of an insole Without the extension.

iin formation of the insole in the preferred Yforms hereinillustratedza piece .of relatively thick leather et@ has/ing the outline of :a normal insole without the arch support extension is first prepared and is supplied with the usual .st-itching chaimels ll and welt-receiving recess l5. For `,this purpose a standard outline of insole may be used and the channelling may be 4done `by the usual channelling machinery. The insole lil is then split as .shown in Fig, .2 to form an upper lamination l2 .and a lower lamination I3. The split is carried through the heel and shank portion `of the insole and, in the yease 4of those illustrated, Ais' .carried forward of the shank lapproximately to the region -oi the ball of the foot. The portion of the insole Abeneath the forward part .of the -ioiot remains in Aone piece. A wedge piece ,t is then .cemented or -otherwiseattached to the lower lamination i3 and the ulr lamination -I2 is cemented or Aotherwise secured to the lWedge piece and Ito the Vlower lamination. Preferably, the upper lamination is considerably thinner than. the low-er, thus leaving sufficient material for the channelling cuts ll and the Weltreceiving recess I5 in the lower lamination. Instead of a single piece split through a part of its area the insole proper may be made from Cil two thinner pieces of the same outline forming the upper and lower laminations and cemented or otherwise secured together with the wedge piece between.

In the form of the invention shown in Figs. 1

and 2, the wedge piece I4 is provided with an extension IB having its greatest width at the line li-d, which is in the region of the breast of the heel of the shoe. The extension is carried forward through the shank portion of the shoe to provide further support in that region. The Wedge piece extends well back into the heel, as shown at Il, to provide the necessary corrective pressure in the zone of the heel and also extends forward at I8 beneath the metatarsal arch of the foot. At this point the wedge piece is well to the center of the insole and since it is skived about all of its edges, it provides suitable metatarsal arch support as shown particularly in Fig. 3. The fact that the greatest width of the extension is at the breast of the heel provides the maximum corrective pressure at the forward inner part of the heel. At this point there are no large blood vessels or nerves beneath the bones of the foot so that pressure may be applied there without danger of interference with blood and nerve supply. The auxiliary support b-y means of the extension at the shank portion is not always necessary and in any case is so designed as to present much less pressure than that of the wider portion at the breast of the heel. Y The insole shown in Fig. 5 is` similar to that of Fig. 1 except that the extension I6a is not carried forward through the shank. This form is preferable where auxiliary corrective support of the instep in addition to that at the breast of the heel is not necessary.

Fig. 6 illustrates an insole of this type in which no extension is used, the corrective support being given entirely by the wedge piece itself which is inset between the upper and lower laminations in the same manner as previously described.

While the invention has been described as applied to an insole for a Goodyear welt shoe, it is equally applicable to many other types of shoe construction.

The invention claimed is:

l. A corrective insole for shoes comprising an insole proper of relatively thick material having the outline of a normal insole without a supporting extension, the shank and heel portion thereof being split into upper and lower laminations, and a corrective wedge piece inset between said laminations along the inner side and having an extension beyond the outline of the insole proper, said extension having its greatest width adjacent the breast of the heel and having a portion of less width extending along the shank portion of the insole and merging with the outline of the insole.

2. A corrective insole for shoes comprising an insole proper of relatively thick material having the outline oi a normal insole without a supporting extension, the shank and heel portion thereof being split into upper and lower laminations, and a corrective wedge piece inset between said laminations along the inner side and having an extension beyond the outline of the insole proper, said extension having its greatest width adjacent the breast of the heel and having a portion of gradually diminishing width extending along the shank portion of the insole.

3. A corrective insole for shoes comprising an insole proper of relatively thick material having the outline of a normal insole without a supporting extension, and a corrective wedge piece inset therein along the inner side, said wedge piece having an extension beyond the outline of the insole proper, and said wedge piece extending forwardly of the shank substantially to the region of the ball of the foot and said forward extension being spaced from both edges of the insole proper to form a metatarsal arch support.

4. A corrective insole for shoes comprising an insole proper of relatively thick material having the outline of a normal insole without a supporting extension, and a corrective wedge piece inset therein, said wedge piece extending along the inner edge lof the shank and heel portion and extending forwardly of the shank substantially to the region of the ball of the foot and said forward extension being spaced from both edges of the insole proper to provide a metatarsal arch support.

5. A corrective insole for shoes comprising a piece of relatively thick material having the outline of an insole, and a corrective wedge piece inset therein, said wedge piece extending along the inner edge of the shank and heel portion and extending forwardly of the shank substantially to the region of the ball of the foot and said forward extension being spaced from both edges of the insole proper to provide a metatarsal arch support.

6. A corrective insole for shoes comprising an insole proper having the outline of a normal insole without a supporting extension andbeing formed of an upper and a lower lamination, and a corrective wedge piece inset between saidlaminations along the inner side and having an extension beyond the outline of the insole proper, said extension having its greatest width adjacent the breast of the heel and having a portion of less width extending along the shank portion of the insole and merging with the outline of the insole.

7. A corrective insole for shoes comprising an insole proper having the outline of a normal insole without a supporting extension and being formed of an upper and a lower lamination, and a corrective wedge piece inset between said laminations along the inner side and having an extension beyond the outline oi the insole proper, said extension having its greatest width' adjacent the breast of the heel and having a portion of gradually diminishing width extending along the Shank portion of the insole.

8. A corrective insole for shoes comprising an insole proper having the outline of a normal insole 'without a supporting extension and being formed of an upper and a lower lamination, and a corrective wedge piece inset between said laminations along the inner side and having an extension beyond the outline of the insole proper, said wedge piece extending forwardly of the shank substantially to the region of the ball of 'the foot and said forward extension being spaced from both edges of the insole proper to form a metatarsal arch support.

GEORGE E. MUSEBECK.

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