A - Human Necessities – 43 – D
Patent
A - Human Necessities
43
D
12/55
A43D 8/00 (2006.01) A43D 27/00 (2006.01) A43D 37/00 (2006.01)
Patent
CA 1165955
Abstract Machine for performing a roughing operation progressively along marginal portions of shoe uppers 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.
379349
Reedman David C.
Tutt Kingsley J.
Busm Co. Limited
Swabey Ogilvy Renault
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