Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 203
M^tKSI and in some cases with a gap-piece. This gap allows muchlarger work to be accommodated than is possible with astraight bed. As an instance, a 4|-inch centre lathe with agap-bed can take work 18 inches in diameter, provided thelength of the work allows it to run clear in the gap. This isa… … In the plain lathe it should be observed that change ofspeed is effected by means of the cone pulley, but a distinctfeature of the headstock of the screw-cutting lathe shown inFig. 171 is the back-gear. This gives the mandril a much LATHES AND LATHE WORK 187 lower speed, and consequently greater…
Metal-work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
