United States Patent 2001821

This invention relates to improvements in e shoes. u It is the object of the invention to provide a 1 cushioned shoe sole which will give fully cushioned support to healthy feet, and will automati- I cally provide less yielding support and massage I for feet with a tendency toward flatness....

Everston, Joseph H.
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Everston, Joseph H.
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Other Classes:
36/28, 36/30A, 36/37
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This invention relates to improvements in e shoes. u It is the object of the invention to provide a 1 cushioned shoe sole which will give fully cushioned support to healthy feet, and will automati- I cally provide less yielding support and massage I for feet with a tendency toward flatness. i It is a further object of the invention to pro- 2 vide a cushioned sole in which the cushion is so 1 devised as to reduce the tendency of the foot to slide forward in the shoe.

In the drawing:. . Figure 1 is a bottom plan view of a shoe on the last prior to the application of the outsole. Figure 2 is a longitudinal section through the lasted shoe upon the line indicated at 2-2 in Figure 1.

Figure 3 is a plan view of the insole, which, for convenience, is illustrated inverted for comparison with Figure 1.

Figure 4 is a detail view in cross section in the plane indicated by the line 4-4 in Figure 1 and showing the cushion as it appears under load.

Like parts are identified by the same reference characters throughout the several views.

As indicated in the statement of object, the invention is primarily concerned with the cushion, most of which is incorporated between the outsole 5, insole 6, and the space defined by the inseam ridge 7, and counter 8. All of this space occupied by the sole of a normal foot, from heel to toe, is filled with a yieldable cushion 10, such as may be made of sponge rubber, rubber coated fiber, or other yieldable porous or elastic compositions. , The cushion 10 is preferably rather soft as compared with other fillings used in this space heretofore.

In order to provide additional resiliency at the heel seat, the outsole is preferably skived away from below at I to provide a pocket directly above the heel 12. The remaining portion 14 of the sole between the pocket II and the cushion 10 is so thin as to be highly flexible. This pocket is filled with a supplementary cushion 15, preferably of material like that used in the cushion 10. This construction provides a highly efficient means of protecting the heel of the wearer from shock and at the same time leaves a pocket into which the wearer's heel will be received under load. It is a very important feature of the present invention to provide at 17, in a position out of contact with a normal healthy arch, a filling which is much less elastic than the cushion 10.

The filling 17 may be elastic to some slight degree if desired, but is preferably substantially inlastic. "For example, the cork composition long ised as a filling between shoe soles may be em,loyed at II.

Similarly, the forward portion of the shoe at 8 has a filling of cork composition or the like. :n both instances the relatively inelastic filling s tapered off, as shown at 19 in Figure 2 and at 20 in Figure 4, and the cushion element 10 overaps the less yielding filling so as to protect the foot of the wearer from any sharp edge. When the foot is not under load in the shoe, the surface of the insole will feel uniform to practically any foot, and the difference between the elastic and inelastic filler will not be evident.

To the normal healthy foot having a sound arch, the relatively inelastic filler will not be tangible, even under load, since the foot will not rest upon it and will be fully cushioned throughout its extent upon the cushion 10. If, however, there should be any tendency for the foot to slide forward in the shoe, this tendency would be resisted, first,-by the engagement of the heel in the very soft double cushion provided in the heel seat, and secondly,-by the contact of the toes with the slightly less yielding filler 18. If the shoe is worn by a person whose arch is not what it should be, a portion of the weight of the foot will be thrown onto the less yielding filler element at 17, when the foot is under load, due to the fact that the portion of the foot at the outside of the arch will sink slightly due to the yielding of the cushion 10. Thus, the foot having a tendency toward flatness will be continually massaged during the use of the shoe by its movement to and from pressure engagement with the relatively rigid and unyielding filler at 17. At the same time it will receive material support from the filler II when under load, such support being automatically removed, when the foot is not under load, by the expansion of the cushion 10.

In order that the foot may partake freely of the advantages provided by the relatively different degrees of cushioned support provided in the filler, the flexibility of the insole is preferably enhanced by the provision of rows of apertures.

There is a series of apertures in the insole at 21 directly above the heel recess 11. A second row of apertures at 22 follows the outline of surface 10. A third row of apertures at 23 roughly follows the contours of the filler element 18.

I claim: 1. In a shoe, the combination with an insole, of a filler which comprises a yieldable elastic cushion conforming substantially in outline to the print of a normal healthy foot, the portion 'of the filler beneath the inside portion of the longitudinal arch of the foot comprising a less elastic body.

2. In a shoe, the combination with an insole and outsole having a space therebetween, of a relatively inelastic body in said space beneath the arch portion of the wearer's foot at the inside of the shoe, a second relatively inelastic body at the forward end of the shoe beyond the position normally occupied by the wearer's foot, and a relatively elastic body filling the entire remainder of the space between said soles and extending around V. Sala Insole, means Providing a relatively inelastic support along the inside of the shank portion, and means forwardly and rearwardly of said shank portion and continuous thereabout on the outside of the shank 10 Providing a cushion of relatively great elasticity and moderate depth.


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