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 877
d up to the tanksthat supply the clarifiers. By this means the vacuum in the third pan is not impaired, and hencethe whole apparatus is kept in continuous operation. Each pan is connected with the exhaust-steampiie D through the valves EEEt which are attached to the vapor-pipes from the overflows.… … 4072. 4073.
Mechanical engineering -- Dictionaries
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