Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 297
enfloating light at high tide or river stage. A capacity of 6,000 pounds is considered suitablefor most terminals, but this, as well as other details, can be varied to suit local conditions. ELECTRIC CRANES 2,951 energy being absorbed by the controller resistance. The speedof lowering is regulated… … Fig. 4,230.—Shaw gantry wharf cranes as installed for the Panama R. R. Co., Laboca (nowBalboa) Panama. These cranes have sloping booms^ the upper ends of which are broughtover the holds of vessels and the lower ends of which are then within the sheds. - Thisconstruction permits freight being…
Electrical engineering
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