Pneumatic Devices

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An air pump, which removes air from an enclosed space. R is the receiver and space that it encloses is what it removes the air from. This particular model is a bell jar receiver. C is a pump cylinder, t is a bent tube connecting the two together, V and V’ are valves.


International Correspondence Schools A Textbook on Mechanical and Electrical Engineering (Scranton, PA: International Textbook Company, 1897)


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