A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 271
be raised by the engine. The air above thepiston will obviously be condensed, and forcingopen the hanging valves in the neck G, will rushthrough them into the pipe L, and thence intothe receiver O P. While the piston thus risesand condenses the air above it, there is a vacuumbelow the piston, and… … /->;/. /.
Encyclopedias and dictionaries · Aeronautics
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