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 141
stiffness. The tread is hardened or chilledby casting the metal against an iron band placed in the sand mouldto form the tread. The result is such a hard tread surface thatonly an emery grinder will cut it. The principal objections tochilled wheels are the difficulty of truing them and the… … Fig. 24. Steel-Tired Wheel 120 ELECTRIC RAILWAYS 25 The rolled-steel wheel and the steel-tired wheel are preferredfor high-speed service. Such wheels are free from the objectionsmentioned for chilled wheels and this is well worth the greater cost.As the rolled-steel wheels are inone piece like the…
Electrical engineering
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