Higbee, F. G · New York, John Wiley & Sons · leaf 136
ipse whose plane CONICAL SURFACES 125 is shown as the joint in the elbow, MN. Since the cone and thecylinder are each tangent to a common sphere they will haVe onecurve of intersection in conomon. Construction. To apply this principle to the drawing of theventilator cowl made up of conical… … Fig. 103. the increase in size in the sections of the cowl is fairly uniform.Tangent to these spheres are drawn the limiting elements of thecones and where these pairs of limiting elements intersect wiU bethe Joints. The opening at E is usually given so that the limitingelements of the last section…
Geometry, Descriptive
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