Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 110
.—Two discs fixed to ashaft have on their face aseries of circular grooves andtongues, meshed with a pairof fixed discs with grooves andtongues, as shown in small sec-tion 367. The tongues onthe revolving discs are cut across at short distances in a slanting direc-tion. The tongues on the…
Mechanical movements
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