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 637
3525. 3526. … the revolving disk floats, sustaining the entire weightof the revolving machinery and most of that of thecolumn of water lifted by the pump. Any surpluswater forced between thedisks tends to lift the re-volving disk higher than a given point, and raise the annular piston off the stationary disk,…
Mechanical engineering -- Dictionaries
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