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 124
consists essen-tially of a hollow globe, supported by one end of a lever and counterbalanced by a weight at theother. The topmost pipe is connected with the steam-space of the boiler, and is opened and closedto the globe by the automatic weighted valve seen on the top of the same. The larger pipe…
Mechanical engineering -- Dictionaries
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