The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 97
s D, a. b, H, H are found,from which the arcs are described toform the ellipse. This process works well for nearlyall proportions of ellipses. It is usedin striking out vaults and stonebridges. Uh Method (by F. R. Honey,Figs. 53 and 54). — Threeradii are employed. Withthe shortest radius… … GEOMETRICAL PROBLEMS. 49 A simple method of determining the radii of curvature is illustrated inFig. 53. Draw the straight lines a f and a c, forming any angle at a. Witha as a centre, and with radii a b and a c, respectively, equal to the semi-minor and semi-major axes, draw the arcs b e and c d.…
Mechanical engineering
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