Shoe lasting machines
AssigneeUSM Corporation
InventorKarl V. Becker
Life of this patent
Estimating the term…
Abstract
A machine for lasting a shoe wherein specially contoured resilient side wipers coact with extensible heel seat wipers to last the sides and heel end simultaneously. Each side wiper is complementarily shaped to the respective contours of the shoe bottom and featherline. An arrangement of pincers pull the upper margin over a precemented insole, then the contoured side wipers floatingly locate and inwardly force the upper margin to the insole, and the extensible heel wipers last the upper margin of the heel, providing a continuity of wiping from the heel to the breastline of the shoe.
Claims13
A machine for lasting at least one side of a shoe, said machine comprising:
- a support for locating and holding a last with an upper assembled thereon;
- an arrangement of at least one gripper for tensioning the side margin of the upper heightwise of the bottom of said shoe;
- a wiper member for lasting at least one side of said shoe including a resilient member having a compound curvature on its face contoured to conform to the edge and bottom of the side of said shoe on which it is to operate;
- and
- means for bodily moving said wiper member inwardly at an angular disposition and widthwise of said shoe to press said tensioned upper first against the feather edge of the side of said shoe and thereafter to wrap the upper margin against the bottom of said shoe by a pivoting movement of said wiper member;
- said wiper member locating the complementary shape of said shoe by first floatingly engaging the featherline near the ball zone of the shoe bottom, whereupon the bias in said wiper member forces the complementarily contoured surfaces to register causing the upper and insole to adhere with one another.
A machine for providing a continuity of lasting to the margin of a shoe upper from the ball zone to around the heel comprising:
- a pre-contoured resilient wiper member for lasting a side portion of a particular range of sizes of a shoe, and
- a heel wiper comprising a pivoting heel wiper plate and including a yieldably extendable wiper arm registered therewith, said wiper arm biased outwardly and telescopingly extending to the heelward edge of said side wiper member.
Dependencies are inferred from the claim text.