Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 319
usefulwhen iron gears can not be easily obtained or repaired. Fundamental principle.—In order that two circles A and B (Fig. 673) maybe made to revolve bv the contact of the surfaces of the curves m m and n n of 302 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. their teeth precisely as they would by…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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