The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion; forming a complete course of mechanical, engineering, and architectural drawing (1871)
Armengaud, Charles A., 1813-1893, Armengaud, Charles, 1813-1893, [from old catalog] joint author, Amouroux, Jules, [from old catalog] joint author, Johnson, William, 1823-1864. [from old catalog] · Philadelphia, H. C. Baird · leaf 28
and bisect it in k,and at k erect a perpendicular, cutting c d, or c d produced, at M;then make g e equal to g m ; j, e, i, m, wiU be the centres of thefour circles required. Through the points, j and i, draw m n, m oE p, E Q, each equal to m c ; then M n and e p will be the radii ofthe greater… … Several instruments have been invented for drawing ellipses,many of them very ingeniously contrived. The best known oftlii.se contrivances, are those of Farey, WUson, and Hick—^^thel;ist of which we present in the annexed engraving. It is shown as in working order,with a pen for drawingellipses in…
Mechanical drawing
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