Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 265
4 face. Should make 250 revolutions per minute, to hoist at a rate of 62 feet. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Plate No. 215. … SPUR-GEARED HOISTING CRAB.Special Design for Use with Overhead Hoist for Riveting Machines. 24 by 4>^ pulleys. Should make 300 revolutions per minute. Drum,18 diameter. Load sustained by patent frictional retaining device. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. 261 Plate No. 216.
Machine-tools · Machinery
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