Heel support device for supporting a last without movement thereof
AssigneeSchon & Cie. GmbH
InventorsTilo Loffler, Willi Hartmann
Life of this patent
Estimating the term…
Abstract
A heel support device for use in a shoe making machine for forming the toe and sides of a shoe upper tensioned over a last seated on a last support include a guide fixed with respect to the machine. A heel support member is mounted for movement guided by the guide by a drive to a supporting position whereat the heel support member bears against and supports a heel portion of the last or heel portion of the upper tensioned therearound. A switch is operatively connected to the drive and is actuated by the heel support member reaching the supporting position to stop operation of the drive upon movement of the heel support member to the supporting position. As a result, the heel support member cannot move the last from a predetermined position.
Claims22
In a heel support device for use in a shoe making machine for forming the toe and sides of a shoe upper tensioned over a last seated on a last support, said heel support device including a guide fixed with respect to the machine, a base plate, a heel support member mounted on said base plate for movement toward and away therefrom, said base plate and said heel support member being mounted for movement guided by said guide toward and away from the last, drive means for moving said base plate and said heel support member along aid guide in a direction toward the last to a supporting position whereat said heel support member bears against and supports a heel portion of the last or a heel portion of the upper tensioned therearound, the improvement of means for preventing said heel support member from displacing the last upon movement to said supporting position, said last displacement preventing means comprising:
- switch means, operatively connected to said drive means and actuated by said heel support member reaching said supporting position, for stopping operation of said drive means upon movement of said heel support member to said supporting position, and thereby for preventing further movement of said heel support member in said direction;
- and
- means for actuating said switch means to stop operation of said drive means as soon as said heel support member abuts the heel portion of the last or the upper.
The improvement claimed in claim 13, wherein said clamping means comprises a pair of levers having respective clamping ends, means for pivotally mounting said levers for movement between a clamping position, whereat said ends are moved toward each other, and an unclamping position, whereat said ends are moved away from each other, means for pivoting said levers to said clamping position, and means for moving said levers to said unclamping position, at least said clamping position moving means being operated by said switch means.
Dependencies are inferred from the claim text.