A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 50
Moiling sptvals When the tracing point is any ordinarypoint on the roller, the curve traced will be atright angles to the pitch curve, but when it … Moiled segment The involute can be formed by rolling alogarithmic spiral on the pitch line, but thatfeature 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…
Gearing
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