Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 200
^ « Ci C-U3 2O l »r Si C5 fi, S flu «j S 6 171 76 ELECTRIC RAILWAYS in Figs. 77 and 78. This is a coil and plunger mounted in the con-troller case. When excessive current is drawn the plunger is attractedinto the coil and pushes a bronze plug under the star-wheel of thecontroller, where it engages…
Electrical engineering
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