International Library of Technology · Scranton, International Textbook Co. · leaf 208
it iscomplete with the exception of the base N, Fig. 1, with whichit must be provided in order that it may be readily attachedto the socket. These bases are usually made of brass andporcelain, the lamp being held in them by a setting ofplaster of Paris or cement. In Fig. 5, the lower part of the… … the leads from the filament, these terminals being arrangedso that when the lamp is placed in the socket, contact willbe made with two corresponding terminals. There arethree different bases commonly used in America; these are § 16 ELECTRIC LIGHTING. 11 the Edison ; the Thomson-Houston^ or T. H, as…
Electrical engineering
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