Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 267
Fig. 502, that recommended by the Franklin Institute in 1864 (Fig. 503). The angle is60°, with straight sides and fiat surface at top and bottom, equal to one eighththe pitchy or distance from centre to centre of threads. In England, the standard thread for bolts and nuts is the Whitworth (Fig.504)… … Fig. 505. The square and rounded threads (Figs. 505 and 506) are only made to orderand used in presses and the like as parts of machines. MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 251 Figs. 507, 508, and 509 represent the proportions of the various parts ofEnglish nuts to the diameters of bolts,…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
