Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 113
to be reproduced in great numbers, the modern tendencySy is to have a special machine which turnsout the desired articleonly; and in design-ing such a machine,the three requisitesmentioned above haveto be kept in mind.The machine may befairly simple or verycomplex, according toits requirements.… … Fig. 103. SIMPLE MACHINES AND MACHINE TOOLS, ETC. 103 a slow speed when cutting or tapping the screw; (2) to allow themachine to run at a quicker speed in the opposite direction whenthe nut is being released; and (3) to make the withdrawal of tlietool and the change of speed take place…
Machinery, Kinematics of
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