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 127
Fig. 202. The for-mulas for Figs. 200 and 202 are:— D2 N2^ Ai R2 A^i 161. Gear Teeth.—Some of the terms used in gear work and thenames of parts of gear teeth are illustrated and named in Fig. 203. Thepitch circles are circles having diameters of rolling cylinders which wouldhave the same velocity… … AddendumOrcu/ar Pitcfr^ Dedendum IVhoJe depth I^iG. 203. Gear Terms. The diametral pitch is the number of teeth per inch of pitch diameter. The other terms can be understood from the illustration. 162. Spur Gears.—The gear wheels just described are called spurgears. The tooth outline for gears may…
Machinery
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