Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 408
364 MECHANISM. Tlieso are the involute and tlie epicycloidal curves. V\ir. 00shows a pair of gears witli epicycloidal teeth and Fig. f»l showsparts of two gears with involute teeth. The construction for get-ting the tooth outlines is shown in the figures, but as this properlycomes under the subject… … Annular Gears. An annular gear is a ring with teeth on itsinside edge. Fig. 62 shows such a gear with center at A, mesh-ing with a small spur gear called the pinion. Rack and Pinion. A rack is a gear whose pitch line is astraight line instead of a circle. Fig. 63 shows an epicycloidalrack in gear…
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