Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 174
s of the trolley(28) are made of cast iron, securedto each other by distance boltsand bars (28, 29). The drum (23)is made of cast iron, and has aright and left luinded groove forthe chains. By this arrangementthe load always hangs in the cen-ter, between the girders. A driv-ing-sheave (7) is fitted… … Fig. 7.—Rope-driven crane. power is transmitted from two of these pulleys (one being smaller than the other), throughbelts, to a siiuare shaft extending the full length of the bridge (1), with two sets of tight andloose pulleys. The power is transmitted from this square shaft to the trolley-wheel…
Mechanical engineering
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