A handbook on the teeth of gears, their curves, properties and practical construction (1885)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 22
CONSTRUCTION. 18 … FIO. 18. THE OLD RULE. the value for the common twelve to rack interchangeable set, and if we usefifteen as the smallest number of teeth in the set, we have an angle of action of 78°. PRACTICAL CONSTRUCTION. When the involute is to be brought into use, we meet with the same diflS-culties as with…
Gearing
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