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 220
Fig. 193.—Method of driving multiple spindle drill heads. … 14 Fig. 194.—An example of highly organized multiple spindle drilling. 210 METHODS OF MACHINE SHOP WORK A highly organized piece of multiple-spindle drilling fromthe works of the Westinghouse Electric and ManufacturingCompany is shown in Fig. 194. The work in progress is thedrilling of one side of…
Machine-shop practice
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