Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 307
Fig. 649. Fig. 650. its weight will supply a portion of the adhesion which diminishes with the in-clination of the belt till it becomes vertical, when the friction of the stretch isthe only factor of the adhesion of the belt to the lower pulley; and, as the beltlengthens by use, the value of this…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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