Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 827
ness, and thereby render the wheel too weak for the work it has to perform. Moreover,/there is the additional advantage in giving more breadth than is indicated above, that the surfaces oicontact being longer, vibration is to some extent diminished; the centres are accordingly better pre-served,… … As it is convenient to express all the dimensions in terms of the same unit, and the pitch being anappropriate quantity, is nearly universally adopted as the term of comparison. These proportions differ, though slightly, in different works and in different localities; but they arethe most commonly…
Mechanical engineering
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