US1561628A - Shoe heel and cushion plug therefor - Google Patents

Description

Nov. 17 ,E 1925- 56L628 H. S. WILLIS SHOE HEEL AND CUSHION PLUG THEREFOR Filed Aug. 21. 1923 Patented Nov. 17, 1925.

PATENT OFFICE.

HARRY S. WILLIS, OF PHILADELPHIA, PENNSYLVANIA.

SHOE HEEL AND CUSHION PLUG THEREFOR.

Application filed. August 21, 1923.

To all whom it may concern:

Be it known that I, IIARRY S. VVrLLrs, a citizen oi? the United States, residing in Philadelphia, in the county of Philadelphia 5 and State of Pennsylvania, have invented new and useful Improvements in Shoe Heels and Cushion Plugs Therefor, of which the following is a specification.

My invention relates to a new and useful improvement in shoe heel and cushion plugs therefor, and has for its object to so con struct a heel that it may be readily and securely fastened to the shoe or a portion of the heel already secured to the shoe and provide for detachably inserting cushion plugs in the completed heel in such manner as to lock said plugs against accidental displacement and yet provide for their removal for changing their locations, or substituting new plugs for worn plugs.

With these and other ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains, may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawing forming a part of this application, in which:

F 1, is a bottom plan view of a heel made in accordance with my invention showing the cushion plugs therein.

Fig. 2, is a reverse view of the heel showing the arrangement of the air cells for giviug the heel increased resiliency and a suction grip wl'ien secured in place the threaded. holes for the plugs being omitted.

Fig. 3, is a section at theline 3 3 of Fig. 2.

F 1g. plugs.

In carrying out my invention as here enibodied, I provide what is termed a rubber heel 1, which has its upper surface so moulded as to form the cells 2 produced by the 1, is a detail section of one of ti. :2

Serial No. 658,526.

cross ribs 3 and the relatively sharp edge 4: the latter extending around the contour of the heel, while the cross ribs extend diagonally acrosssaid heel as clearly shown in Fig. 2, a through the rubber heel l, and an annular recess 6 is formed in the outer face of this heel around each of the threaded holes for the purpose herein set forth.

7 represents the threaded cushion plugs each of which has formed therewith an enlargedhead 8 beneath the shoulder of which formed a groove 9 thereby producing the annular wedged shaped flange 10. When the plugs are screwed into the threaded holes 5 the flange 10 of each plug will pass within its respective recess 6, thus sealing the air within the groove 9 so as to produce a pneuinatic eifect at this point which not only gives a greater resiliency to the plug, but serves to lock or hold the plug against rotation when the weight of the wearer of the heel is upon the plugs.

In practice I have found this to be of great utility since any slight rotation of the heel when in contact with. the pavement has a tendency to back the plugs out of their threaded holes, but the pneumatic effect of the air sealed within the grooves 9 tends to force the flanges l0 outward binding them against the side walls of the recesses.

Of course I do not wish to be limited to the exact details of construction as herein shown as these may be varied within the limits of the appended claim without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is A. shoe heel having threaded holes each terminating in a recess at one end and threaded rubber plugs in said holes, each plug having a head provided with a groove and flange, said flange engaging the inner surface of the recess to produce a frictional. resistance against turning.

In testimony whereof, I have hereunto afiixed my signature.

HARRY S. /VILLIS.

series of threaded holes 5 are formed

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