Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 129
courses; theyare used by engineers where A ^ great strength is required, suchas the construction of bridges ;and they form the contour ofmouldings, etc. Those subtle wcurves that we admire in theoutline of Japanesehandscreensand vases are often parabolas. Fig. 231 is an illustrationshowing how… … Fig. 231, ceed in the same manner with the other curve** ii6 GEOMETRICAL DRAWING AND DESIGN. Cycloidal Curves. If a circle is rolled along a line in the same plane, a point inthe circle will describe a curve of a class called cycloidal. The line along which the circle rolls is called a director,…
Geometrical drawing · Design · Drawing
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