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Alternating-current machinery: a practical treatise on alternating-current principles and systems, commercial types of alternators, synchronous motors, transformers, converters, induction motors, switchboard and station appliances, etc. (1912)

American School (Chicago, Ill.), Esty, William, 1868-1928 · Chicago, American School of Correspondence · leaf 462

An illustration from Alternating-current machinery: a practical treatise on alternating-current principles and systems, commercial types of alternators, synchronous motors, transformers, converters, induction motors, switchboard and station appliances, etc., 1912, leaf 462
Fig. 378. Quick Break Knife Switches s s, one on each side of the blade. When the handle is pulled forwardto open the switch, blade a leaves clip c, while the springs are putin tension more and more until the switch blade b is pulled from theclip c, with a snap, thus causing a sudden breaking of…

Electric machinery -- Alternating current

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