A handbook on the teeth of gears, their curves, properties, and practical construction (1890)
Grant, George B. (George Barnard), 1849-1917 · Lexington, Mass., Lexington Gear Works · leaf 46
Holled segment Rolled curve The involute can be formed by rolling athe curvature of the pitch line 0 K, they are logarithmic spiral on the pitch line, but that the same for the same arc 0 K on all curves,and therefore all odontoids traced on thesame side of any number of different pitch-curves by… … Moiling feature is a mere curiosity without practicalvalue, while the circular segmental tooth ofFig. 23, a perfect and very simple odontoid,can be formed only by a roller that is acurious combination of polar spirals that canbe discussed only by the use of the highermathematics. The properties of…
Gearing
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