Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 56
ers BC and DFmay b^ obtained by intefsecting these diameterswith the pefpendiculafs CL, LM, MN, etc. Again,having points C and D, bisect DAC and determinea mean proportional between AC and AD. This may be done by laying off AF equal to AC anddetermining the mean proportional AK as before.Then lay… … Fig. 126—The Ellipse—1. from this point to two fixed points shall be con-stant. Fig. 126, if EKF be a cord fastened at itsextremities, E and F, and held taut by a pencil-point at K, it may be seen that as motion is givento the point it will be constrained to move in afixed path dependent on the…
Mechanical drawing · Machine design
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