Image of a Westinghouse circuit breaker. Around the time of the publication of the book (1901), large numbers were in use and gave very good service. a and b are the main contacts. c is the crosspiece that a and b are connected to. The current flows from a to c to b, which trips the coil d and exits out l. m is an auxiliary carbon contact, n is a carbon wiper, and w is an adjustable weight attached to the armature.
KeywordsWestinghouse circuit breaker, Westinghouse, diagram of circuit breaker, 1901 era appliances, old fashioned circuit breaker, what did an old fashioned circuit breaker look like
International Correspondence Schools A Textbook on Electric Lighting and Railways (Scranton, PA: International Textbook Company, 1901)