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 462
FiG. 8.—Sling-pulley. … Fig. 9.—Loading or unloading haj-. w< HAY-LOADERS. ward when loaded and downward when empty. The sweep rides on two side-wheels and arear caster, the latter supporting the weight of the driver, who controls the dip of the sweep-
Mechanical engineering
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