Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 246
y given line crosses the meridian section, as n and o, can bedetermined exactly by noting on plan the intersection of themeridian plane, M, and the grain cylinder under consideration,No. 5. The point of tangency between the surface circle Aand the grain cylinder 6, as seen on plan at m*, indicates… … Fig. 209 a portion of a cylinder. The bottom is a right helicoid, gen-erated by an horizontal line connecting two helixes of differentdiameters. The slope of the inner helix is much steeper than that of theouter one. Light packages descend along the steep inner edge,while heavier ones, under the…
Geometry, Descriptive
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