Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 337
1338. REVOLVING TOOL HEAD,for a Monitor lathe. … 1339. COLLAPSING TAP.—Thehook cutters C, C, slide in the tapershank B, and are drawn up to their full j£) diameter for cutting by turning the shankhandle in the inclined slot in the shell,and the reverse motion of the handlefor collapsing the tap. 1340. Longitudinal section.
Mechanical movements
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