Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 89
ution of the drillspindle, the drill advances by an amount— From the American Machinist^ March 16. 1901. 78 MECHANISM. V ri--.-V and this can be made as small as we please by giving the fourwheels suitable numbers of teeth. The mechanism may te madea two-speed mechanism by making P a broad-faced… … Fig. 83. by a toothspace in K coming into contact with the fixed pLu X.In that case P becomes locked, and therefore acts as a fixed nut,with the result that for each revolution of the drill spindle, thedrill advances a distance equal to the pitch. The point of thedrill can thus be brought quickly…
Machinery, Kinematics of
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