Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 324
r wheel; when the generating circlerolls on the exterior and interior of both pitch-circles, it will in the formercase generate the faces of the teeth as shown at A 0 and A C, and in the latter machin:e design and mechanical constructions. 307 case their flanks A B and A B. In other respects the… … Fig. 681. the staves of the trundle have no sensible thickness ; that the distance of theircentres apart, that is theiv pitch, and also their distance from the centre of thetrundle, that is their pitch-circle, are known. The pitch-circles of the trundleand wheel being then drawn from their…
Mechanical drawing
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