Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 265
Fig. 177.—Gas meter. Fig. 178.—Gas meter show-ing internal mechanism. meter. The movement of the valve in opening the port whichadmits gas to the diaphragm closes the port to the chamberwhich has filled. The gas entering the diaphragm expands itlike a bellows and forces the gas out of the chamber,…
Heating · Lighting · Plumbing
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