Babendreier, Arthur O. [from old catalog], Maryland institute for the promotion of mechanic arts and design, Baltimore. [from old catalog] · Baltimore, Md., The Maryland institute for the promotion of mechanic arts and design · leaf 56
d is the pitch. Therefore with a single thread worm (Fig. 21c) thepitch equals the lead and one revolution of the wormadvances the worm wheelone tooth. With a doublethread worm (Fig. 21b) thepitch equals one-half thelead and for each revolution the worm wheel is advancedtwo teeth. With a treble… … FIG.2IA
Mechanics
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