A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 304
Fig. 104 (Fig. 105) enveloped by a spiral projection called thethread B, which is nothing more than an inclined planewound around a solid barrel. … Fig. 105 It is not clearly determined how far the mechanicalpowers were known to the ancients. Without doubt they 292 A HAND BOOK FOR MECHANICS had a knowledge of the lever, the wheel and the axle, andthe pulley, and it would seem because of the great en-gineering feats of construction and building…
Mechanics · Arithmetic · Measurement
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
