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 17
the United States several decades in advance of its general * Consolidated with the works of Sir W. G. Armstrong. 6 MKTHODS OF MACHINE SHOP WORK acceptance in England. Similarly, while gear-cutting machinesoriginated in England, their development into automatic ma-chines and the reduction of gear… … Fig. I.—Whitworth lathe of iS4g. was introduced into general practice by the Brown and Sharpe]\Ianufacturing Company through their production of diametralpitch cutters as an article of manufacture. This adoption of the diametral pitch system was both a caseand an illustration of the manufacturing…
Machine-shop practice
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