 | Ellis A. Davidson - 1870 - 238 pages
...following, repeated from " Linear Drawing," will remind the student of the nature of this curve : — " If a flexible line is supposed to be wound round any curve,...being in reality the opening out, or unrolling of the circumference of the first curved surface. " Thus, if a circular piece of wood, having a string equal... | |
 | Technical educator - 1871 - 858 pages
...The next „ 4 „ 4 F. Tho process is then continued from tho inner squares. THE INVOLUTE (Fig. 61). If a perfectly flexible line is supposed to be wound...gradually unwound, the end of, or any point in the lino will describe or trace another curve, called the involute of tho curve — being in reality the... | |
 | Technical educator - 1880 - 850 pages
...The next „ 4 „ 4 r. The process is then continued from the inner squares. THE INVOLUTE (Fig. 61). If a perfectly flexible line is supposed to be wound...the curve — being in reality the opening out, or tmrolKnff, of the periphery of the first curved surface. Thus, if a circular piece of wood were fastened... | |
 | Henry John Spooner - Geometrical drawing - 1911 - 196 pages
...by 360°. 153. The Involute of the Circle. — If a perfectly flexible line or inextensible thread be wound round any curve so as to coincide with it, and be kept taut as it is unwound again, a point in the line will trace another curve called the involute... | |
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The process is then continued from the inner squares. THE INVOLUTE (Fig. 61). If a perfectly flexible line is supposed to be wound round any curve, so as to coincide with it, and kept stretched as it is gradually unwound, the end of, or any point in the... 