US1907612A - Shoe - Google Patents

Description

May 9, 1933. TARLOW 1,907,612

. SHOE Filed May 13 1932 f: A7- oR/ver Patented May 9, 1933 i,eo7,612

ISIDOR TARLOW, OF BROCKTON, MASSACHUSETTS SHOE Application led May 13, 1932. Serial No. 611,042.

rl`his invention relates to shoes and is useful in any type of shoe although especially advantageous in the Goodyear and McKay types.

The object of the invention is to relieve foot strains which weaken the normal muscle support of the arch.

On weight bearing in which foot strain is present the excessive strain occurs on the musculature and ligaments that go to support the arches of the foot. ln strain on the long arch of the foot there is a disturbance of the normal foot balance, which causes a rotation outward of the os calcis,

while the head of the astragalus bears heavily on the inferior calcaneo-scaphoid ligament which gives away, allowing the head of the bone to pitch forward.

When this occurs, there is a severe strain put upon the plantar aponeurosis or the planta fascia. This plantar aponeurosis is of great strength and consists of white glistening libers disposed, for the most part, longitudinally and is formed of three parts. The

central portion, thethiclrest, is narrow behind and attached to the medial process of the tuberosity of the calcaneus. It becomes broader and thinner in front and divides near the heads of the metatarsal bones one for each bone.

Accordingly an important feature of this invention resides in a support of novel shape functioning to give additional support where most needed. To this end the support is located beneath the shank of the shoe just forward of the heel breast forming, in effect. a central projection from the heel so designed as to give support t0 the planta fascia before it is put on stretch, thus to relieve strain and prevent pain before there is a pull on the attachment to the calcaneus.

To the accomplishment of this object and such others as will be understood by those skill-cd in the art from the following description, the invention comprises the features and combinations of shoe parts first described in detail and then pointed out in their true scope by the appended claims.

The preferred form of the invention is illustrated in the accompanying draw`ing,-in which:` Y

Figure 1 is a view of a shoe, in side elevation, illustrating, by dotted lines, the effect on the wearers foot when the shoereceives the wearers weight as in walking;

Fig. 2 is a view, in longitudinal 'cross-section, of the heel portion of the shoe shown by full'lines in Fig. 1;

Fig. 3 is a view, in transverse cross-section, o on the line 3-3 of Fig. 1;

rige is a view, similar to Fig. 2, illustrating a mode of repair to restore the action of thenovel support after wea-r has l,made it ineffective;

Fig. 5 is a view, in perspective, of a rubber heel that may be used; and

Fig. 6 is a view, in perspective, of the tread face of a leather heel embodyingthe invention applied to the shoe. v

Figs. 1, 2 and 3 illustrate the invention, in its preferred form, applied to a conventionalv shoe having an upper 10, outsole 12, insole 13 and a base lift '14 which may be of leather. To the base lift 14 there-is applied a rubber lift 15 (Fig. 5) having at its breast an integral, preferably semi-circular central projection 16 of greater thickness than the thickness ofthe lift` 15 and providing a rearwardly facing shoulder 18. When the rubber lift is applied tothe base lift, as shown in Fig. 2` its shoulder 18 bears snugly against the breast of the base lift 14, the rubberlift otherwise fitting the base lift. Itwill be observed that the top and bottom faces 19 and 2O of the projection 16 are parallel and that before the rubber'lift is attached to the base lift, the bottom face 20 is in the general plane of the tread face 22 of the rubber lift. This is purposely the construction so thatvwhen the rubberlift is seated on the base lift theforwardly land downwardly inclined shank of the shoe (indicated by 23 on Fig. v1) will turn the upper face 19 also'to an inclined position, the whole projection 16 yielding and bending on its lineof joinder to the breast of the lift 15,l so that after attachsmentite bottom face 20 is permanently inclined forwardly and downwardly relative to the tread face 22. Thelift 15 is attached by nails 24 clenched on the heel seat as usual but the projection 16 is specially attached by a nail 25 which is clenched on the rear end of a metal shank piece 26 secured in position between the outsole and insole.

A modiiication is shown in Fig. 6 wherein the invention is embodied in an all leather heel. Each -eather lift 28 is dinked with a generally semi-circular lip centrally of its breast which together form a leather projection 8O under the shank of the shoe which is turned down by the shank inclination so that its bottom face 3l is inclined relatively to the plane of the tread face ofthe heel just as shown for the rubber projection l5 in Figs. land 3; `A heel'nail (similar to 25 in Fig. 2)` attaches the .projection 30 firmly to a metal shank piece.

The bottom face of the downwardly inclined projection of either form of heel will, in time, wear to the plane of the tread face of t-he heel. Theadvantages, now to be described, of the novel shoe construction may be restored bywithdrawing the nail 25 which secures the projection, inserting` a wedge 34 see Fig. 4) between the upper face of the projection and the outsole to force thebottom face to an inclined position again, and then renailing to attach the repaired projection immovably to the shoe.

' In walking, the heel breast projection, because of its partial location in a plane below the plane of the tread face ofthe heel, meets the ground l'irst, then as the weight settles and bears on both the heel and forepart of the shoe the projection is bridged over by the downwardly acting forces and is forced upward and presses upwardly on the Ashank of the shoe just forward of the heel. l As the weight is thrown forward by bearing wholly on the forepart of the shoe the heel is raised and the pressure is relieved. The relation of the shoe to the ground, before the weight brings the heel down, is shown by full lines in Fig. l and the dotted lines of Fig. l show the foot at the moment the weight bears on both heel and forepart at both front and rear of the lined projection. The effect of the gradually upwardly moving heel breast projection caused by downward pressure at both its front and rear is Ato spring Vor arch the outsole upward in the region of the heel breast before the full Yeffect of the weight is felt on the planta and at the same time to longitudinally stretch-the upper forming the ankle opening causing it to tighten about the ankle. Thus a strong support is given to the planta be'- fore it is put on stretch and much comfort is derived from the snug supporting fit imparted by the arching shank to the entire counter portion of the shoe. bridgingV over the low lying heel breast projection at every step is aided and controlled by reason of the projection being held immovably at the vital point through its secure- This repeated action of rubber lift at the tread end, said rubber lift i having a pressure exerting central breast projection with a solid top face engaged with said inclined shank and its bottom face in a plane forwardly and downwardly inclined relative to the plane of the tread face of the "f heel.

2. A rubber top lift for heels of shoes, Vhaving a lift portion and a solid centralized rela. tively narrow projection at its breast edge, said projection having its bottom face level and in substantially the plane of thetread face of the lift portion, being considerably thicker than the lift portion andY having its top face unbroken and in a plane parallel toY its bottom face, said lift after being attached to a shoe adapted to have its bottom face in a plane forwardly and downwardly inclined elztive to the plane of the tread face of the 3. A rubber top-lift according to claim 2 in which the centralized projection is given ya top face of greater area than its bottom face.r

4. ri shoe having a heel comprising a base lift, a rubber top-liift having a centralized projection at its breast extending upwardly to l overlap the base lift and engage the shoe sole with its top face, said projection bending downwardly along its line of joinder to the breast of the top-lift causing its bottom facel to extend forwardly'and downwardly relatively to the plane of the tread face of theV heel. v

ISIDOR TARLOVV. Y

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