Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 403
so small a pitch as half-inch are now veryseldom made with cast teeth, but such gears are usually cutfrom solid stock and the teeth are usually constructed accord-ing to the involute system and calculated according to dia-metral pitch. 3»4 GEAR TEETH Fig. i b shows a gear with internal teeth… … GEAR TEETH.. 385 When internal teeth are constructed according to this sys-tem, the difference between the number of teeth in the internalgear and its external pinion must never be less than 12; practicallyit is better to limit the difference to 15 or 20 teeth. As interchangeability is seldom…
Mechanical engineering
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