Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 81
and 3 respectively, and placed as shown (C)for balance. With C completed, if cut out along the full-lineoutline and folded together, it would give the object illustratedin Fig. 21. 79. Problem 5.—Projections of a Frustum of a Right Cone ofRevolution, and its Development.—Figs. 23 and 24. Let it… … This problem is solved by dividing the circle of the base ofthe cone into an equal number of equal arcs, and joining thesepoints of division with the apex of the cone, thus giving a numberof elements of the cone—working lines—which are projectedthrough the several drawings in the manner described…
Mechanical drawing
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