A new and original treatise on the geometrical development of round and oval cones, with easy examples of their application : for the use of beginners and practical sheet iron and tin plate workers (1904)
Fuller, John, b. 1833 · New York : D. Williams · leaf 52
w C D atright angles to it at the point E. Now divide A E in Fand E B in G, and with G B as radius and G and F as cen-ters describe the arcs H B I and K A J and let themeach contain two-sixths, or 120 degrees. From Ithrough G draw I G M, and from J through F drawJ F M, and with M I as radius from… … 48 The Geometrical Development A J I B H K is complete and is the pattern of the bottomof the bottle without edges for seam, and from the linesof this bottom we develop the top or oval cone, proceed-ing as follows: Extend the line M F J both ways to P andO, and M G I to Q and N, and with the radius…
Sheet-metal · Geometry, Descriptive
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