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 39
n relation to the axis, and in consequence the meridian outline of the screw-thread will not besymmetrical, nor will it be bounded by right lines. Nevertheless, since its acting sections possess theproperty, before mentioned, of admitting a change in the distance between the axes without…
Mechanical engineering -- Dictionaries
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