Renwick, James, 1790?-1863 · New York, G. & C. & H. Carvill · leaf 161
meters; to this are adapted by hinges, in such amanner as to open upwards, two shutters that fill up therest of the circular opening of the piston. These shutterstherefore rise and fall together like wings, whence theirname. The piston and its valves are usually called theBucket of the Air-pump.… … CONDENSING ENGINE. 155 92. On the side of the Air-Pump, and near its top, iscast a rectangular passage, which is closed by a valve v,similar in form and structure to the foot-valve, and whichis called the Delivering-door. 93. Upon the rise of the bucket of the Air-pump, thewater of condensation is…
Steam-engines
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