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 21
g = 90<^ — -—- in which s is the number of teeth in the smallest gear in the pair. If theangle is greater than this the motion will not be continuous, as each piniontooth will pass out of action before the next one is in position to act. INTERCHANGEABLE SETS. Any number of involute gears from… … :ONSTRUCTICN. 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 actionof 78°. PRACTICAL CONSTRUCTION. When the involute is to be brought into use, we meet with the same diffi-culties as with the…
Gearing
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