US1695408A - Inner sole and method of making the same - Google Patents

Description

Dec. 18, 1928. v 1,695,408

H. A. BALLARD I NNER SOLE AND METHOD OF MAKING THE SAME Qriginal Filed March 17. 1921 Patented Dec. 18, 1928.

UNITED STATES HARRIE A. BALLARD, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENIS, TO INTERNATIONAL SHOE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORA- TION OF DELAWARE.

INNER SOLE-AND METHOD OF MAKING THE SAME.

Application filed March 17, 1921, Serial 110.452,!546. Renewed October 25, 1928.

This invention relates to a shoe inner sole for welt shoes, more particularly of that type wherein a reinforcing strip of fabric is employed, and relates specifically to the formation of a circumferential rib through the root of which the inseam passes. The inner sole is channeled in the opposite directions about the margin of the fore part and the shank of the sole blank, the lips bent into contact one over the other and compacted together to form a rib of the desired contour, and the reinforcement is then applied.

For a more complete understanding of this invention reference may be had to the ac- 1 companying drawings illustrating one embodiment thereof, in which-- Figure 1 is a plan view of an inner sole blank channeled in preparation for the for mation of the rib.

Figure 2 is a similar View showing the lips turned into overlapping contact and compacted. I

Figure 3 is a similar view showing the reinforcing fabric in position on the inner sole in preparation for the final rib reinforcing operations.

Figure a is a plan view of the finished inner sole, and

Figures 5, 6, 7 and 8 are part fragmentary sections through the margin of the sole and rib corresponding respectively to Figures 1 to 4, inclusive.

Referring to Figures 1 and 5 the inner sole A is channeled from both directions around the margin of the shank and fore part to form a pair of oppositely 'directedchannel lips 1 and 2, the inner channel li 2 being trimmed away at 3 where it is of su stantial thickness. Lip 2 is then turned upwardly at an acute angle and pressed outwardly, the lower face and free edge being molded into the same plane andforming the lower part of the inner. rib face. The lip 1 is turned back wardly down over lip 2 so that its edge forms a continuation of the lower inner face of the lip 2.

In Figure 6 is shown in dotted lines a pair of die members i and 5 shaped to form these lips as described, and by pressure to compact the same to a substantial rib. The reinforcing fabric 6, coated with an adhesive, is then placed in position, as shown in Figures 3 and c, engaging the face of the inner sole within the rib and projecting over the rib. The fabric is then shaped to conform closely to the rib surfaces and the surplus material trimmed away to form the completed inner sole shown in Figures4 and 8. It should be noted that this procedure forms a rib having a substantially fiat outwardly and downwardly inclined inner. face and a convex outer face. The inner face is thus formed to properly guide the channel-guide of the sewlng machine and insurethat the inseam is properly positioned, while thecurved outer face allows the presence of sufficient material to reinforce the rib to prevent anypossibility of its being bent or distorted in such a way as to affect the stitching mechanism. It should also be noted that this process produces a rib composed of a pair of channel lips which it is unnecessary to cement together prior to the reinforcing, thus eliminating the necessity of performing this additional operation. Moreover neither lip is bent back through an angle of more than 90 degrees at its root, so that it is not unduly stretched or strained and the betweensubstance is not torn. The strength of the parts, therefore, is not impaired by the forming operations, as might result if the lips were bent further.

Having thus described one embodiment of this invention, it should be evident that vari ous changes and modifications might be made therein without departing from its spirit or scope as defined by the appended claims.

I I claim: I i

1. The method of making an inner sole which comprises channeling a sole blank in opposite directions about its margin, compacting one of the channel lips so formed, and bending the other thereover to form a rib of the desired contour.

2. The method of making an inner sole which comprises channeling a sole blank in opposite directions about its margin, compacting the inner lip and bending the outer form an outer convex face and a downwardly and outwardly substantially flat inclined innor face. V

5. An inner sole having a rib composed of a pair of channel lips compacted together in overlapping relation into the desired contour, and a reinforcing material shaped to conform to the inner and outer faces thereof.

6. An inner sole having a rib of-material compacted to form a downwardly and outwardly directed substantially flat inner face and a convex outer face.

7. An inner sole having a rib formed of oppositely extending channel lips, the side and rections about its margin to form a pair of 20 oppositely directed channel lips, the inner of said lips being compacted and the outer of said lips being folded over said compacted inner lip.

In testimony whereof I have afiixed my 25 signature.

HARRIE A. BALLARD.

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