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 212
n of theshaft and of the doors or gates opening into it. That portion of the shaft enclosure at each floor should be carriedthe full height of the opening between flpor and ceiling in order to reducethe possibility of accident. When grill work is used for this portionof the enclosure, there should… … Fig. 4,129.—Semi-circular multi-shaft open iron work. With this grouping of the entrance tocars, the doors of all the cars can then readily be seen by a person entering the hall,and he can therefore ascertain at once which car to enter. This arrangement, however,should not be carried beyond the…
Electrical engineering
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