A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 49
econdary of an internal gear can inter-fere ^^ith the face secondary of its pinion asin Fig. 20, and serve to indicate the state ofthe ordinary interference between the gears. Where the lines separate, the teeth are clearof each other, h ; where the lines cross or coin-cide there will be double… … Intea^ferewce lines of contact will determine the maximumaddendum allowable on each gear face. When, as is always possible by choosingthe proper odontoids, the two secondariescoincide completely, or over any desired dis-tance, there will be double contact. In allsuch cases we have D C = a b, or the…
Gearing
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