Protective sole assembly

Abstract From the Canadian patent

A sole construction for protective shoes comprises a protective mid-sole and an integrally insole and heel plug, the plug portion including a top surface, a recessed bed in the top surface spaced-apart anchoring projections in the recessed bed and a slot extending through the insole laterally thereof adjacent the plug and communicating with the recessed bed. The mid-sole being coextensive with the insole and including a rearward extension adapted to pass through the slot in the insole and be received in the recessed bed. The rearward extension of the mid-sole includes complementary anchoring seats adapted to be selectively engaged by at least one of the anchoring projections in the bed.