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 298
en at from about 5 to7 cents per pound of total crane weight and the cost of an electric traveling crane at from about10 to 13 cents per pound of total crane weight. 2,952 HAWKINS ELECTRICITY regulated over a fairly wide range by inserting resistance in itsfield circuit. By this means considerable… … Figs. 4,231 and 4,232.—Shaw half gantry wharf crane suitable for piers on which the shedsare set so far back that it is not practical to reach the ship from overhead tracks. _ Thiscrane has the same boom and operating machinery as the overhead type shown in fig.4,229, but travels on one elevated…
Electrical engineering
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