Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 260
time for the metal to flow betweenthe dies ; the head is made to move at the rate of an inch a minute under pres-sure, and three feet a minute toward and from its work. As the movement underpressure is very short, the operation of coining is rapid and applicable to a varietyof work, such as… … HYDRAULIC MEDAL PRESS.—2,000,000 Pounds Pressure. 2.S6 Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Hoisting flachines. WE make three sizes of worm hoisting machines for freight elevators, allof the same general type ; they are strong, simple, and efficient. Theworm-wheels and worms are…
Machine-tools · Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
