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 173
are able to hoist a loadof 5 tons. When the two barrels are coupled together, the pawl must be lifted out of theratchet-wheel of the small barrel. When a workman has to lift a small weight, he pulls the chain of the small barrel. If hefinds the load too heavy, he applies himself to the second… … Elecinc Traveling-Cranes.—Electrically driven traveling-cranes have come into extensiveuse during tlie past three or four years, tiie (•(tnvcniciice of transmitting ]K>wcr by a wire, ascompared with transmission by square slnifts, liciting, or njpes, being its eliief rcconimenda-tioii for tliis…
Mechanical engineering
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