Method of manufacturing a rubber shoe sole

Abstract

This invention reveals a method of manufacturing a rubber shoe sole having a decorative metal piece incorporated therein comprising molding a metal slug to comply to the shape of a fenced area in a shoe mold while simultaneously shaping and vulcanizing a rubber slug in the shape of said shoe mold at a temperature sufficient to vulcanize said rubber slug with the provision that said temperature be from about 0.degree. C. to about 80.degree. C. less than the melting point of said metal slug. This invention more specifically discloses a method for the manufacture of a rubber shoe sole having a decorative metal piece incorporated therein comprising: (a) placing a metal slug in a fenced area of a shoe mold; (b) placing an uncured rubber slug on top of the metal slug in said shoe mold; (c) closing said shoe mold; and (d) applying a sufficient amount of heat and pressure to said mold so as to simultaneously shape said metal slug and to shape and vulcanize said rubber slug, said metal slug having a melting temperature from about 0.degree. C. to 80.degree. C. greater than the temperature used to vulcanize said rubber slug.

Dependencies are inferred from the claim text.