. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . 15-Ton Unloaders and Ore Bridge Operated byG-E Electrically Operated Gantry Crane Handling Ore. i I Electric derrick hoists are ^ Derrick ^ particularly useful in the con- 1 . ,. I tracting and construction field I Applications j ^^^ excavation, quarrying and I „„„„ I concrete construction. G-E di-rect current, series wound, andalternating current hoist motors are widely used in thisservice. The) are applied for h
. Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry . 15-Ton Unloaders and Ore Bridge Operated byG-E Electrically Operated Gantry Crane Handling Ore. i I Electric derrick hoists are ^ Derrick ^ particularly useful in the con- 1 . ,. I tracting and construction field I Applications j ^^^ excavation, quarrying and I „„„„ I concrete construction. G-E di-rect current, series wound, andalternating current hoist motors are widely used in thisservice. The) are applied for handling three motions—boom lifting, swinging and raising of the load. Con-trol is centrally located so that the operator can handleall motions from one position. Electrically Operated Car Dumpers Electrical equipment used oncar dumpers is required to han-dle high peak loads, and to pro-vide for dynamic braking. Thecar dumper is used in discharg-ing the contents of open-topfreight cars by turning the whole car sidewise aboutits longitudinal axis, dumping its contents into boats,bins or storage yards. G-E mill type motors are usedalso for operating machinery of this class. These motorsare described briefly on pa
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjecthoistingmachinery
