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 139
SECTION B-B Li IS.. … 6ECT/ON A-AFig. 21. American Electric Railway Engineering Association Standard Brake Shoe a manner as to permit them to be replaced readily. They are,therefore, carried in supports called brake-heads to which theyare attached by single keys. The heads, in turn, are hung by meansof some kind of a…
Electrical engineering
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