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 243
. In the foregoing discussion of radiotelephony it has been impos-sible to do more than very briefly present the subject. Many in-teresting questions of a theoretical nature and a description of severalother systems, it has been found necessary to omit. If, however, thepresent short survey awakens… … ELEVATORS PART IIIELECTRIC ELEVATORS Early Types. The first application of electricity as a motivepower for elevator service was made in the year 1889, and was doubt-less suggested by its successful use on street cars and in driving linesof shafting in industrial establishments. The installation…
Electrical engineering
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