Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 298
20-TON TRAVEIvUNG CRANE.—for Riveter Tower. 30 ft. span. 40 ft. lift. Hoist, trolley and bridge travel by separate motors.Hook carried by six parts of steel wire rope. Movements operated by controllerssituated at riveter. No operator on crane itself. Automatic mechanical and elec-tric brakes. Used… … 30-TON TRAVELI.ING CRANE. In East Erecting Shop, Wm. Sellers & Co., Incorporated. 56 feet span. Operated by .single electric motor through our improvedclutch machinery. Power transmitted to trolley by square shafts within thebridge. Bridge driven and kept in line by racks or runways. 294 Wm.…
Machine-tools · Machinery
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