Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 149
. Tables adjustable vertically 12. Vertical travel of tool slide,TiA- Adjustable feed motion carried on travelling head. Rapid traverse byrack and pinion. Very stiff and powerful machine. Two speed countershaftswith 20 pulleys, making 140 revolutions per minute, and 12 pulleys making570 revolutions… … CENTRE-HEADS AND BAR FOR SHAPING MACHINES. These are of different capacities to suit different sizes of shapers. One headis provided with worm rotating gear, and adjustable centre and a carefully madedividing plate with five or six rows of holes and screw stop ; there is also a springstop, fitting…
Machine-tools · Machinery
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