Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 408
ofvarious outlines of the section of the worm-thread. The outline of FORM OF TEETH OF WORM AND WORM-TEETH. 397 the worm-thread, in moving from the position qqq^ to ppi^p, sweepsout the profile wwww, which represents a boundary within whichit cannot enter, but every part of which it is forced at… … Fio. 436. planes, such as AA, or CC, parallel to BB, yield unsymmetricalprofiles, and the conjugate worm-wheel profiles are also un-symmetrical. Thus in Fig. 436, rrrr represents a section of the worm-thread bythe plane AA (Fig. 434), in one of its proper positions relatively tothe worm-wheel whose…
Machinery, Kinematics of
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