Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 130
P/NION18 Teeth 5P15° Involutey all over Fig. 208. Bevel Gear Drawing. 165. Worm Gearing.—A worm and wheel are shown in Fig. 209. Aworm is a screw having a section on a plane through its axis of the sameform as an involute rack tooth. The gear which is driven by the worm … Fig. 209. Worm and Wheel. 120 MACHINE DRAWING is called a worm wheel. The worm may have single, double, or multiplethreads as explained in Chapter II for screw threads. The velocityratio is found by dividing the number of teeth in the worm wheel by 1for a single thread worm, by 2 for a double…
Machinery
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