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 163
ACHINE SHOP WORK for originating screws and from his time until the present dayimprovement in the accuracy of screws has been brought aboutchiefly by beginning with the best screw available as a leadscrew and cutting others from it by devices which corrected itserrors. Modern refined methods of… … Fig. 127.—Maudsleys original screw cutting lathe. has been small compared with that of his screws. Smallscrews are also still occasionally made by the use of handchasers and such screws have no, or, at most, a remote con-nection with Maudsleys, but they are small in size, numberand importance.…
Machine-shop practice
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