A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 57
lobe Od f at THE NORMAL THEORY OF THE GEAR TOOTH CURVE. right angles at 0 with the pitch line, andmeeting it again at/, where Oe f=Oef. The face cycloid ODF forms a flank,OD F\ on the pinion, that is at right angleswith the pitch line at 0, meets it again at F,where OD F=ODF, and which takes… … When the radius 00 is equal to the heightFD, as in Fig. 33, the flank will be a straightdiameter OF,
Gearing
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