The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1188
ETH. 1139 center, but beyond PL. With the radius of the generating-circle, andwith centers successively placed on these radial lines, draw arcs of circlestangent to PL at 1, 2, 3, 6, 7, 8, etc. With the dividers set to one of theequal divisions, as 01, step off on the generating circle go the… … Fig. 172. The curves for the mating tooth on the other wheel may be found inlike manner by drawing arcs of the generating-circle tangent at equidistantpoints on the pitch-circle pi. The tooth curve of the face Oh is limited by the addendum-line r or rltand that of the flank OH by the root curve R…
Mechanical engineering
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