International Library of Technology · Scranton, International Textbook Co. · leaf 441
around with the upper member. In Fig. 11 {b), a spring smay be seen on the main casting c. There is a projectionon one side of the main casting, and this projection goes intoone end of the spring; an iron dog (^ that moves around thesame center as the rocker casting R has a slight projectionthat…
Electrical engineering
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