A handbook on the teeth of gears, their curves, properties, and practical construction (1890)
Grant, George B. (George Barnard), 1849-1917 · Lexington, Mass., Lexington Gear Works · leaf 42
practi-cable. When a cusp, 0 a n, ov 0 a b cis foiiaed,the action is mathematically perfect at allpoints, but practically is limited to the firstbranch from 0 to a. The contact changes, atthe cusp, from one side of the line to theother, and is therefore impracticable withreal teeth. The cusp always… … The con jug at or THE CONJUGATOR. We have seen, Fig. 3, that any odontoidwill form or develop, an enveloping curve, THE NORMAIi THEORY OF THE GEAR TOOTH CURVE. that is also an odontoid and coDJugate to it.The same process provides a simple and exactmethod for forming templets and cutter-shapers, in…
Gearing
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