Richey's guide and assistant for carpenters and mechanics : a work of practical information, giving almost every geometrical and practical problem likely to arise in the work of the carpenter, and quick and easy methods for their solution : the use of the steel square, etc., tables showing strength and weight of materials, methods of framing, useful recipes, etc., etc. (1894)
Richey, H. G. (Harry Grant), b. 1868 · New York : W.T. Comstock · leaf 69
ing the curve. 79—When the Two Axes are Given, to Draw aCurve Approximating an Ellipse.—With ^ ^^ as themajor axis and a g the minor axis, Fig 84, draw lines con-necting a d and a c; then, with b as centre and <5 ^ asradius, draw the semi-circle, finding points e and f, fromwhich points draw… … 80—To Draw an Ellipse with the Trammel.— Take and tack a frame to the floor or drawing board, asshown by i, 2, 3, Fig. 85, leaiving a space between thestrips of three-eighths of an inch ; then, on the trammel,make d e equal to the semi-minor axis and d f ^.o^dX to thesemi-major axis; then put a…
Carpentry
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