US1852879A - Orthopedic sole - Google Patents

Description

April 5 1932- M. GLUC'IAUF v 1,852,879

' ORTHOPEDIC SOLE Y Filed Jan. '7, 1929 Pateniea Apr. v5,- V`1932 f n f um511.5113:A STATES;

= l 1,852gs7a MAX GLCKAUF, or BERLIN-CHARLOTTENBURG, GERMANX on'rnornnrc soLE i Y Application mea January 7, 1929, serial No.

My invention relates to soles and more particularly to soles having an outer sole, lan inner sole, a resilient'intermediate sole, and a metal insertion, and it is an object of my invention to 'improve a sole of this type.

To ythis end, I provide any elevation on the inner sole and a boss on the insertion to fit the elevation,'and extend the intermediate sole beyond the elevation.

In ythis manner I provide an orthopedicV sole which is adapted for quantity production and may be manufactured at normal cost whereas heretofore they could only be made to order and so were rather expensive. Shoes equipped with my soles can bemade on a quantity production scale for ladies, gentlemen and (children, and will not only make walking pleasant but alsowill counteract depression of the metatarsal bones which is a particularadvantage.

The insertion may be made of metal or lany other resilient material but is preferably made 0f meta-l and is springyso that itymay yield whenthe sole is bending. This insertion is combined with thefintermediate sole which may be of cellular4 or sponge rubber or any other resilient material and cooperates in the moulding of the sole on the last so ports it, as it were, on a bed. My sole thus compares favourablyI with soles `of similar type which kare comparatively rigid and may hurt the foot. f

The invention is clearlyfillustrated in the accompanying drawings, in which Fig.` 1 is a plan'view of an improved sole constructed in accordance with this invention and having a single intermediate sole,

Fig. 2 is a longitudinal sectional view taken on line 2-2 of Fig. l, Y

Fig. 3 is a plan view of a modied insertion, and

Fig. 4 is a cross sectional view on the line 4 4 of Fig. l. v i

In all figures, l isv theouter, 2 is the inner sole which is provided with a rib at its edge so as to form a recess 3V for thefreception of the intermediate sole4 or 4, 12, 12V are registering perforations yin the inner and intermediate soles with the object of increasing that the sole fits the foot exactly and supaaonraanay in Germany4 January 1s, 1,928.r`

the resiliency of thesolev and to impart to it a certainpermeability, 5, 5 and ll are elevations formed on the inner soleby moulding it on kthe last, 6 is the heelend of the sole,

8 is an insertion extending from the heel 55` toward the instep, and 9 is a convex raised portion on the inner end of the insertiony which fits the elevation ll. In this connection attention is directed to the fact that the convex raised portionV tapers rearwardly as at 9V and also extends lengthwiseof the sole toward the heel.

Inthe sole illustrated in Fig. 2 the intermediate `sole 4 extends from the toe tothe vation 11 forms in the region of the meta- 75D tarsal bones and is permanently but resili-V ently supported 'by the convex raised por-r tion 9.

Referring now tol Fig., 3 an insertion 8 with a `convex raisedportion 9" is shown 80 which is made as a narrow strip the widest ypart of which is the base of the convexraised portion.

I claim l. A sole comprising the combination with an outer sole, an inner sole and a metal support interposed between said inner sole and outer sole and having a convex raised portion under and extendingto the height of the metatarsal bones, said raised portion also t extending lengthwise of the sole towardsthe heel and tapering rearwardly, of a perforated elastic intermediate `sole of cellulary rubber on said metal support extending over the entire length of the sole, the innersole having t perforations registering Lwith the perforations of the elastic intermediate sole, as and for the purposes set forth.

2. A sole comprising the combination with an'outer sole, an inner sole and a metal sup- 100 f v port interposed between said inner sole and outer sole and having a convex raised portion under and extending to the height of the metatarsal bones, said raised portion also extending lengthwise of the sole towards the heel and tapering rearwardly, of a perforated elastic intermediate sole of cellular rubber un suid=meta1 supporte/:ttendingi over the entire'length of the sole and coveringlthe metal support and the portion of the outer sole not covered'by .the metalsupportfthe a inner sole having perforations registering with the perforations of the elastic intermediate sole, as and for the purposes set forth.

In testimony whereof `I A"have-signed'my name to this specification.

MAX vGLCKA'U'F.

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