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 615
A very excellent method of arrangingresents an ordinary countershaft, having … therefore only as an arbitrary one, finding its justification in an apparent necessity for some distin-guishing title for a class of apparatus specialized in its construction with reference to the magnitudeand nature of the dutv to be performed. Early Pumping Engines.—From about 1758 up to the time…
Mechanical engineering -- Dictionaries
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