Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 203
by which both work and tools are bolteddown. Large floor areas are fitted with these plates, a sectionof such a floor at the General Electric Companys Schenectadyworks being shown in Fig. 172. The machine tools themselvesare of considerable variety, several being shown in Figs. 173-176, from which… … Fig. 173.—Portable floor plate drilling machine. FLOOR-PLATE WORK 193
Machine-shop practice
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