Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 162
162. Internal Gears. Exact Cycloidal.—Fig. 68. To drawthe teeth, draw the two pitch-circles tangent at the common pitch-point, P; draw the addendum- and root-circles of the usual pro- GEARING. J43 portions, and the describing-circles as shown. Rolling thedescribing-circle on the outside of the… … for the annular wheel; rolling the same describing-circle on theoutside of the pitch-circle of the pinion generates the epicycloidP-F, which defines the face curve for the teeth for the pinion.
Mechanical drawing
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