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. Illustrated catalogue and general description of improved machine tools for working metal . 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 for handling long boilers over stationary riveter. Requires no.special operator. Wm. Sellers & Co., Incorporated. Philadelphia, Pa. 293 Plate No. 242.. 30-TON TRAVELI.ING CRANE. In East Erecting Shop, Wm. Se

. Illustrated catalogue and general description of improved machine tools for working metal . 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 for handling long boilers over stationary riveter. Requires no.special operator. Wm. Sellers & Co., Incorporated. Philadelphia, Pa. 293 Plate No. 242.. 30-TON TRAVELI.ING CRANE. In East Erecting Shop, Wm. Se Stock Photo
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. Illustrated catalogue and general description of improved machine tools for working metal . 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 for handling long boilers over stationary riveter. Requires no.special operator. Wm. Sellers & Co., Incorporated. Philadelphia, Pa. 293 Plate No. 242.. 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. Sellers & Co., Incorporated, Philadelphia, Pa. Plate No. 243.