Notes on practical mechanical drawing, written for the use of the students in general engineering drawing in the University of Illinois (1907)
Wilson, Victor Tyson, 1864- [from old catalog] · State College, Pa., The author · leaf 93
out, see Fig. 12: Through T, the point of the desiredtangent, draw random secants through points on the curveas 1, 2, 3, 4, 5, etc. With T as a center, and any radius, 84 Notes on Practical Mechanical Drawing describe an arc to cut the secants prolonged. On eachsecant lay off, from its intersection… … these points. Where this curve cuts the auxiliary circle, isa point in the tangent. For the tangent the chord lengthwill be its minimum value. To inscribe a circle in any triangle: Bisect any two ofthe interior angles. The intersection of these bisecters willbe the center, and its perpendicular…
Mechanical drawing
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