US 5,421,050 A · Shoe construction method

Abstract

A novel method of footwear construction. A specially designed outer sole with a lip is used. It insures accurate positioning between upper and shoe linings. After the upper is complete, a sock lining is attached to a leather lining by stitching the edges of the linings to the edge of the insole. The insole is made of soft leather or soft flexible fabric. The next step is uniting the linings with the upper. Then, the upper of the shoe is assembled onto the last by inserting the last into the upper which now is completely closed by the linings only. Only the lower edge of the upper (about 1 inch) is floating loose. The fourth step is to cement the sock lining, which is attached to the upper via the vamp and quarter linings, to the specially designed sole. With the last in place, the fifth step is to cement the lower edge of the upper that was left free to the recessed lip of the sole. After this attachment has been completed, the shoe assembly is dropped into a pressure device to further set the cement bonds. After the shoe has been removed from pressure, the last is removed. As an optional final step, the cement bond attaching the previous free edge of the upper to the sole can be side-wall stitched, adding strength to the fastening. The resulting shoe is extremely lightweight, flexible, yet possesses the uniformity of shape and comfortable fit of a lasted shoe.

Claims4

Dependent claims

A method of constructing a shoe using a last, said shoe having an upper with a lower edge, vamp and quarter linings, an outer sole with a recessed lip having an inner and outer surface and a sock lining, the method comprising the steps of:

cutting said upper and linings to fit the last;
joining the vamp and quarter linings to the sock lining to form an inner lining;
uniting said inner lining with said upper using cement between said upper and said inner lining wherein said inner lining is positioned with respect to said upper;
forcing the last into said united upper and inner lining, wherein said upper is free from said inner lining at the lower edge of said upper;
fastening said inner lining to said outer sole at least along the inner surface of the recessed lip of said outer sole to form a bond between said inner lining and said outer sole;
cementing the lower edge of said upper to the outer surface of the recessed lip of said outer sole to form a bond between said lower edge of said upper and the outer surface of the recessed lip of said outer sole, thereby forming said shoe;
exposing said shoe to external pressure, such that the bonds are completely set;
removing the last from the completed shoe.

5 more elements

Dependencies are inferred from the claim text.

Shoe construction method

Life of this patent

Shoe construction method

Life of this patent

Abstract

Claims4