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 706
Fig. 5.—Bradleys harrow. The Acme harrow (Fig. 4.) includes the functions of clod-crushing and pulverizingplowed ground. The front cutters are deflected to one side, and the rear cutters to the other. … Fig. 6.—Gales harrow. to neutralize tendency to ridge the soil. The angle of the cutters is adjustable, and they arereversible, doubling their service. Bradleys steel lever-harrow (Fig. 5) will serve to illus-trate the improvement by which the entire harrow-frame, connected throughout by a series…
Mechanical engineering
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