Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 558
Fig. 108. Plan and Section of Track, Monte Carlo, Europe.General Electric Companys Surface Contact System, 1898. Surface Contact Switch. The automatic switches are constructed on the solenoid principle, thearmature or core of which is employed in closing the contacts as shown in … Fig. 109. Automatic Switch for Open Conduit, Surface Plate Contact System. 546 ELECTRIC STREET RAILWAYS. Fig. 109. The end of the armature core is provided with a pressed sheet-steel carbon-holder, for the purpose of supporting the carbon contacts whichare held in place by bronze clips and cotter…
Electrical engineering
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