Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 947
and allowed to flow from oppositesides of the pair of diaphragms, so that both diaphragms are made to traverse alternately backwardand forward as the chambers are alternately filled with a measured quantity of water, which will beaccurately indicated by the index and dial of the registering… … WATER-METERS. 913 uous revolving diaphragm or abutment between the inlet and outlet ports, in the same manner as thepiston in a steam- or water-cylinder forms a complete dam or dividing abutment between the portsof the inlet- and exhaust-valve. The moving parts acting both as valves and pistons, no…
Mechanical engineering -- Dictionaries
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