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 571
ticallines. For example, concave and convex planes, called hollows and rounds, include generally the fifthor sixth sometimes about the third of the circle; and it is principally in the part between the thirdand the semicircle that the dragging is found to exist; and therefore, when a large part of…
Mechanical engineering -- Dictionaries
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