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 266
AR CUTTING 255 has now been adapted to the production of spur and spiralgears and the principle is best described in connection withspur gears. At the top in Fig. 257 is a gear of metal whilebelow it is a blank of some plastic material. If the two shaftsbe connected by gears having their speed…
Machine-shop practice
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
