Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 68
ond director—which it also encloses. In the first case the resulting curve is a prolate epi-trochoid; in the second a curtate pjeritrochoid. Proceeding in the usual way, a semi-circle is drawnthrough P from each rolling centre, R and p. Dividing these semi-circles into the same number ofequal… … therefore be at Pj, at a distance R P from R^ and on the dotted arc through 1. Similarly inrelation to p. Each position of P is joined with each of the centres from which it could beobtained. 62 THEORETICAL AND PRACTICAL GRAPHICS.
Mechanical drawing · Lettering
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