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 131
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… … i. ^) ^i^ WORM GEAR 48 Teeth GP. 5ing/e R. H. WORM S/ng/e R.H. Fig. 210. Worm and Wheel Drawing. 166. Cams.—A cam is a plate having a curved outline or groove, or acylinder having a groove, and is used to change rotary motion to re-
Machinery
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