Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 211
fundamentalcircle is set off from 1 on the generating circle in its first newposition; the distance 2 to a on the fundamental circle is set offfrom 2 on the generating circle in its second position, etc. Forthe rest, the construction is substantially the same as Figs. 25and 26. Note.—If the… … Involute. An involute is a curved line which may be assumed to begenerated in the following manner : Suppose a string be placedaround a cylinder from a to b, in the fig. 28 c, direction 01 the arrow (see Fig. 28), and having a pencil attached at b;keep the string tight and move thepencil toward c,…
Mechanical engineering
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