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 15
pressure on the journals. And finally, the difference between the lengths of the face and the flankwhich act together, and therefore the sliding, increases more and more rapidly as we recede from thepitch-circles. This latter fact is sufficient to show that the teeth of wheels ought always to be…
Mechanical engineering -- Dictionaries
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