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 190
the successiveoperating positions. At the right and in line with the workspindles are four tool supports which, while stationary in posi-tion, revolve about their individual centers if need be. A more ^ In some cases even this is reduced by dividing the longest single operationinto two, thereby… … Fig. 157.—Multiple spindle automatic turret lathe.
Machine-shop practice
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
