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 184
. Spencer, who made his first machine 1 Frequently called automatic screw machine. TURNING AND BORING 173 about 1875. A prior patent by Francis Curtis issued in 1871and another by L. W. Langdon issued in 1864 anticipate somefeatures of Mr. Spencers work. For several years the machinewas not offered… … Fig. 153.—Automatic turret lathe. machine, a simple example has been chosen in order to moreclearly illustrate the principle. So far as the mounting andaction of the cutting tools are concerned, this machine is sub-stantially identical with the hand-operated machine, but thereciprocation and…
Machine-shop practice
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