US2324889A - Method of making shoe heels - Google Patents

Description

July 20, 1943. J. SUSSKIND METHOD OF MAKING SHOE HEELS Filed Dec. 5 1941 j Im'em A I I On y 'ierred embodiment ofthe invention is shown.

Patented July 20, 1 943. I V

UNITED j "STATE-S METHOD or MAKING SHOE IHEELS I Julius Susskind, Brookline, Mass, assignor of,

one-half to Harry Freedman, Boston, Mass.

' Application December 3, 1941, Serial No. 421,496

iciaim. (c1. I I

quickly to rest on the pavement because of the My invention relates to improved method of making cushion heels and heel-lifts for shoes,

and the primary object of the inventionis to economically andefficiently produce a,..su perior product of this character.. I

Other important objects andadvantages of myinventionwill beapparent from a reading of the following description and the appended greater I conforming characteristics inherent ihereinenabling theheel tofieX upwardly as the weight is placed-thereon and quickly achieve a full supportingengagementwith the heel portion 9, wherein the full support of the ordinary cushion heel is obtained.

x In making the present heels, the heelbody 6 drawing whereinfor illustrative purposesa pre- In'the drawing;- l I I Figure 1 is a fragmentary side elevational view showing the step or pressing together the combination of heel body, layer of cement, 'andpCellu- I loid top 'plate preceding the dryingstep which imparts the concave-convex form to the finished product.

Figure 2 is a top planview of the finished product. I l v I i Figure 3 is a transverse internal view along the line 3 3 of Figure 2. r V Figured is a side elevational view of th -finished heel.v

Figure 5 is a fragmentary sectional elevational Q .view showing the heel installed on a shoe.

The present application'is a continuationin part of my co+pending application Serial No. 326,092, filed March 26,1940, for Cushion heel.

The present cushion heel or heel lift 5 comprises the flexible, compressible rubber or similar material body 5 providing the cushioned-engagement with'the pavement I when secured by nails 8 or the equivalent to the heel. portion, 9 of the shoe ii). The heel 5 further comprises the Celluioid or similar material top plate I! which is concavo-convex. in form and secured'by cement scribed below; The Celluloid or similar material is cut from flat rubber or similar material plate] and is in flat form until further processed as de- 'top plate H is likewise cutvfrom flat plate ma- *lower surfaceof the top plate H are then roughterial, 'and.it,is of the same size as the top of the heel b'ody, 6,

The uppersurface of the heel body and the ened by any suitablemeans to better accommodate cement. I r 7 l The upper surface of the heel body is then given a preliminary coating of Celluloid cement which is allowed to 'dry and then recoated' with the same cement as at 12. In the meantima the lower surfacefof *the Celluloid top plate H is washed with'a solvent to softenit and adapt it to bond with'the Celluloid cement I2 dried on h heel body, the solvent consisting of 50% of I 5 acetone and 50% for synthetic methanol.

\ The top plate I and the heel bodyfi are then I registered and placed between two fiat pressure platesor blocks |4, l5 and squeezed together. The amount of pressure applied and the duration of this operation depend to some extent on i 2 to the top of the body 6 in a manner to impart a similar curvature or concave-convexform I to the body 6: and thereby provide a cushion heel which is relatively more flexible and compressible and therefore of greater cushioning ef- I fect. In addition, the convexity of the bottom l3 .of the heel provides for a more natural and adaptible engagement of the heel with the pavement in walking than is provided by flat bottom heels. The foot rarely comes down on the pavement at the same. angle even where the pavement is smooth and level, but usually engages the pavement at an angle and scufis the edges 7 of the heel before the bottom of the'heelfinally 'fully rests on the pavement, thereby prematurely wearing theheel. In the case of thejpresent invention, however, the edge of the heel engages the pavement at a more obtuse angle due to the convexity of the heel bottom, and settles more the materials employed, but the top plate II and heel body 6 remain in the described situation for severalhours or until a satisfactory union between themis achieved.

The combination is then removed from the press, trimmed and polishedandpainted as may be desired. I

The heels are then laid aside for three or four days, during which time the Celluloid top plate I l dries andshrinks and both the top plate and the heelbodyas a result take on the desired uniform concave-convex contour shownas d'escribed.

The above mentioned cement is preferably made by dissolving about 1 pound of Celluloid film in 3 gallons of acetone, and after about three days mixing with the resultant about 1 gallons of wood alcohol and /2 gallon of menthyline chloride.

Although I have describedand set forth herein preferred embodiments of my invention, it is to r be understood that I do not wish to'limit'the application of theinvention thereto, except as wee? may be required by the scope of the subjoined claim,

v Having described the invention, what is claimed as new is: I

A method 01 making a cushion heel, said method consisting inproviding a Celluloid top plate and a rubber heel body of substantially the same plan shape, softening the top plate with Celluloid solvent, securing the top plate to the upper surface of the-heel body with cement, pressing the top 'plate and heel body. together to complete the union therebetween, removing the pressure from the united top plate and heel body and allowing the same to stand until the Celluloid top plate dries and warps into a permanent concavo-convex form with which the heel body conforms.

V JULIUS SUSSKIND.

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