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 192
. It forms a rounded bottom to the ditch, suitablefor the reception of either of the ordinary sizes of farm drain-tile. The dirt is all dischargedat one side of the ditch, convenient for refilling. As the wheels are 10 in. broad, the machineworks on soft gnnind as well as hai-d, even where horses… … required depth. The cuttin<r-wheel cuts down the sules of the ditch, and a scoop just behindthe lowest part of the wheel pares oflf a layer of dirt, and causes it to pass upward under thecontrol of an endless apron, which retains the earth in the grooved periphery of the wheeluntil the dirt is…
Mechanical engineering
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