US 4,134,278 AGranted

Machine for performing an operation along a non-rectilinear workpiece periphery

AssigneeInternational Shoe Machine Corporation

InventorMichael M. Becka

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Abstract

A machine for roughing the margin of a shoe upper a desired distance inwardly of the non-rectilinear margin periphery during the rectilinear movement of a shoe assembly, comprising the upper mounted on a last, past a roughing tool. A sensing member, movable towards and away from the shoe assembly in unison with the roughing tool, is caused to bear against the side of the shoe assembly during the shoe assembly movement and the roughing tool is so spaced from the sensing member as to be engageable with the margin. The sensing member is laterally offsettable during the shoe assembly movement to insure that the roughing tool engages the upper margin inwardly of the margin periphery during the movement of upper margin peripheral portions that are inclined with respect to the direct of rectilinear movement of the shoe assembly.

Claims6

Dependent claims

A machine for performing an operation along a non-rectilinear periphery of a workpiece surface comprising:

a support for supporting the workpiece;
a sensing member, located rearwardly of the support, adapted to engage a non-rectilinear side of the workpiece corresponding to said non-rectilinear periphery;
a tool, having an operating portion located forwardly of the sensing member in forward-rearward alignment with the sensing member, adapted to perform said operation;
means for so moving the support as to move said workpiece side past the sensing member and as to move the corresponding portion of said workpiece past the tool;
and means for causing the sensing member and the tool to so move forwardly-rearwardly in unison during said support movement as to enable the sensing member to be in engagement with said workpiece side and as to enable the tool to perform said operation along said workpiece periphery;
the machine characterized in having the improvement comprising:
means mounting the sensing member for lateral movement between a central position, in which the tool is in said forward-rearward alignment with the sensing member, and laterally offset positions on opposite sides of said central position;
and powered means, effective during said support movement, for effecting lateral movements of the sensing member from each of said positions to a selected other of said positions.

5 more elements

Dependencies are inferred from the claim text.