Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 83
the cleaning chamber on its way tothe pump, it is strained through the cloth bag. It is therebyfreed from the dirt, which is retained in the bag. This is opera-tion number three. 68 PHYSICS OF THE HOUSEHOLD The air pump. — The air pump shown in Fig. 49 is what isknown as a double-acting diaphragm… … JjVbzzZe Diaphragm Futin Atmosfihere fo-rces Air in here.. Fig, 4g. — Showing how the vacuum cleaner works. There are two valves in each chamber, i and 3 in one, 2 and 4 inthe other. All of these valves open upward. When the piston is moved to the right, as in the figure, thesize of the left-hand…
Physics · Home Economics
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