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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 122

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 122
421a. THE PULSOMETER STEAMPUMP.—Water is forced from each cham-ber alternately by the steam pressure,while the opposite chamber is filled by thevacuum caused by the condensation of thesteam in contact with the wet surface. Theball valve is very lightly balanced and isthrown over by the alternating… … 421b. THE EDWARDS AIR PUMP.—Has no suction valves. The ports in thecylinder are opened by passing the pistonto the bottom of the cylinder. The waterand air enter above the piston and is dis-charged above. The discharge valves aresealed by water held back by the dam.The piston rod is sealed by a…

Mechanical movements

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