Method of stiffening an insole during the cement lasting of footwear
AssigneeWingspread Corporation
InventorPaul Jones, Jr.
Life of this patent
Estimating the term…
Abstract
A shoe is provided having a soft, and compliant insole and a cushioned outsole. In manufacturing the shoe, the insole is temporarily stiffened by a relatively firm member to which it is bonded by means of a wax. This enables the insole to withstand the normal lasting procedure. The outsole is provided with a cavity for receiving a cushion therein. The shoe upper is attached to the outsole such that the insole overlies the cushion. Once the shoe is completed, the wax bond between the insole and its stiffener is heated to allow the separation and removal of the latter.
Claims7
A method of manufacturing a cemented construction of footwear comprising the steps of:
- providing an insole composed of a thin, soft and compliant material of insufficient stiffness to withstand a lasting operation;
- temporarily bonding said insole by means of a softenable wax to a substantially stiff supporting member of sufficient stiffness to withstand a lasting operation;
- securing said bonded insole and supporting member to a last, said supporting member being positioned adjacent said last;
- applying an upper member to said last;
- securing said upper member to said insole thereby forming a complete upper;
- providing an outsole having a cushion therein of generally the same configuration as at least part of said insole;
- cementing said completed upper to said outsole such that said insole overlies said cushion;
- removing said last from the thus formed footwear;
- removing said substantially stiff supporting member;
- and,
- burnishing any residual traces of said softenable wax on the then exposed face of said insole into the body of said insole.
Dependencies are inferred from the claim text.