Notes in engineering, 3a, Harvard university (1904)
Kennedy, F[rank] L[owell] [from old catalog], Norton, Arthur Edwin, [from old catalog] joint author · Cambridge, Mass. · leaf 40
drawn, respectively, outside and inside a circle known as Pitch.Circle. The -Pitch of the teeth is the distance betweenthe centres of successive teeth, measured along the Pitch Circle(arc ab in diagram). * Cycloid — kvk\os = Circle. Epicycloid — ^iri = upon + nixXos. Hypocycloid — inrd = under +…
Mechanical drawing
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