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 385
es, and sometimes it is simply put around the ties. The increasing cost of wooden ties, the difficulty of obtaininggood ones, and the comparatively short life of these ties, haveresulted in the development of substitutes. Wooden ties, however,possess many advantages. They are cheap; they produce a… … Fig. 232. steel Tie and Tie-Rod Construction are zinc chloride, creosote, and crude oil In order to properlyapply the preservative it is necessary to first remove the sapand air from the wood, which is accomplished by means ofheat. On cooling, the wood tends to absorb the preservative.This matter…
Electrical engineering
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