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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 242

An illustration from 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, leaf 242
open-coil type is merely a number of coils of iron orother high-resistance wire mounted on non-combustible supportssuch as porcelain knobs. The coils are placed in a well-ventilatediron case to protect them from mechanical injury and to preventcontact with the clothing of passengers. 208 ELECTRIC…

Electrical engineering

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