Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 155
the involutes 0-1-2-3, etc-> anc^o-2~3, etc., to the m-n and p-p base circles, respectively; these,curves form the face and part of the flank—that part betweenthe pitch-circle and the base circle—of the teeth of the respective-gears, the remainder of the flanks being drawn as radial lines. 136… … Fig. 62. The construction of the exact tooth curve is both laboriousand time-consuming; in fact so much so that there has beena number of methods evolved for approximating the curve. Ofthe various methods in use, that of approximating the toothcurve with circular arcs is the most widely used. The…
Mechanical drawing
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