A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 50
THE NOEMAL THEORY OP THE GEAR TOOTH CURVE. line ure consecutive, the rolled curve is a true is the pole of a spiral it may cross at an odontoid. As the length of the normal P K, angle. Fig. 22. the normal angle P K S, and the normal arc Although rolled curves and odontoids are P K= 0 K, are in no… … Moiled curve the curvature of the pitch line 0 K, they arethe 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 the same point on the same rollerare similar odontoids.
Gearing
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