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 67
(c) Curtate (b) Curtate 1 ^^ curSe Cumte *°^ E^ilpttcllTrochoid. ;j Epitrochoid. Perltrochold. |j HypotiSJhold. Hypotrochoid. Hypot^ochiid. CurtateCyclo-orthoid. 177. From the above we see that the prefix qn (over or upon) denotes the curves resultingfrom external contact; %j50 (under) those of… … 178. The construction of these curves is in closest analogy to that of the cycloid. If, forexample, we desire a rtiajor hypocydoid we first draw two circles, mVP. m x L, (Fig. 103), tangent internally, of which the rolling circle has itsdiameter greater than the radius of the fixedcircle. Then, as…
Mechanical drawing · Lettering
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