A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 55
efore its substituteshould be the curve that is nearest like it, andmost nearly has its properties. Evidently, the nearest possible approach tothe involute, is the segment that has the sameangle of obliquity, and the longest radiusthat will admit the required addendum onthe required smallest… … pitchline Action ofSegmental Tooth a, and its rapidity gradually increases to thefinish at n. The corrected involute action,Fig. 29, is uniform from a to m, and finisheswith a sudden jerk from m to n. THE NORMAL THEORY OF THE GEAR TOOTH CURVE. If the correction should be curved enoughto cause any…
Gearing
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