Machine design; a manual of practical instruction in designing machinery for specific purposes, including specifications for belts, screws, pins, gears, etc., and many working hints as to operation and care of machines (1918)
Wallace, Ernest L · Chicago, American technical society · leaf 149
heshrouding. The strength of the shrouded gear is estimated to befrom 25 to 50 per cent above that of the plain-tooth type. The hook-tooth gear, Fig. 80, is applicable only to cases wherethe load on the tooth does not reverse. The working side of thetooth is made of the usual standard curve, while… … Fig. 80. Hook Teeth between this form and the standard may be made by drawing thetwo teeth for a given pitch, measuring their thickness just at top ofthe fillet, and finding the relation of the squares of these dimensions.The truth of this relation is readily seen from an inspection of theformula…
Machine design
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