Leather manufactures – Machines – Roughing
Patent
1981-06-05
1983-06-14
Lawson, Patrick D.
Leather manufactures
Machines
Roughing
C14B 144
Patent
active
043875815
ABSTRACT:
Machine for performing a progressive roughing operation on shoe bottoms has a three-axis computer controlled stepping motor arrangement for moving two rotary radial roughing tools along a pre-determined path in relation to the shoe bottom being operated upon. The tools are also mounted on a common sub-frame for pivotal movement about a transverse axis which extends tangential to the shoe bottom engaging portion of the operating surface of the tools, again by computer-controlled stepping motor. Grinding stones are provided for grinding the tools, and a further stepping motor operates to move the tools relative to the sub-frame to maintain the shoe bottom engaging region of the operating surface of each tool in the datum plane in which said transverse axis lies.
REFERENCES:
patent: 4090378 (1978-05-01), Sommer
patent: 4126020 (1978-11-01), Tutt et al.
Reedman David C.
Tutt Kingsley J.
Halgren Donald N.
Lawson Patrick D.
USM Corporation
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