Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 188
\l k\ : WMToe svppiLr 658. DIRECT AIR PRESSUREPUMP.—Two chambers for alternatingthe pumping action are placed near thewater surface in a well or other watersupply. The chambers have suction andforce valves. A four-way switch cocknear the air pump alternates the flow ofcompressed air to and from the… … *An_..
Mechanical movements
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