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
labor; but a converse difficulty of equal if net greater magnitude is encountered if we reverse theprocess: for if the meridian section of the screw be assumed, we have to determine the form of awheel-tooth which shall work with an oblique section of the thread as a rack-tooth; and this alsowill…
Mechanical engineering -- Dictionaries
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