Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 197
d draw a faircurve, which will be the involute required. The tangent and normal at any point T are obtained thus.Draw the line TP tangential to the circle A, and produce it toW. This is the normal; the tangent ES is at right angles to it. Problem 200. To construct a continuous curve, Tjy a… … Fis. 311. Bisect the line CD (Prob. 1), and produce the bisecting per-pendicular till it meets CK produced in L. Join DL. Bisectthe line DE, and produce the bisecting perpendicular till it meetsDL produced in M. Find the remaining points N, 0, and Pin the same manner. The points Iv, L, M, N, 0, and…
Geometrical drawing
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