Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 344
Projections of a Triangular-threaded Screw and Nut (Fig. 706).—Draw theground line A B, and the centre lines C c of the figures, from 0 as a centre,with a radius equal to that of the exterior cylinders, describe the semicircle … t-B « 3 6 ; and with the radius of the interior cylinder the semicircle Ice. Drawthe perpendiculars a a and 6 6, J) h and e e\ to represent the vertical projec-tions of the exterior and interior cylinders; divide the semicircle a 3 6 into any 328 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. number…
Mechanical drawing
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