Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 215
1700 LB. HAND AND SELF-ACTING HAMMER. 13 cylinder, 23 stroke, with separate bed plate. Balanced piston-valvewith steel packing rings. Choke valve to regulate force of blow without dimin-ishing velocity. vSteel dies and steel false top to anvil block. Quick throttlevalve. Wm. Sellers & Co.,… … 1200-LB. HAND-ACTING HAMMER. 11^ cylinder, 30 stroke. Special dies for forging locomotive frames.Balanced piston valve with packed piston. Collin exhaust. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Plate No. 175.
Machine-tools · Machinery
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