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Ro′ta-ry Har′row.


Husbandry.) One having the tines set in a frame which rotates on a vertical axis as the harrow is drawn along the surface of the ground. In the example, the bent rim and the spokes have teeth, and their axial pin is journaled in bearing sleeves attached to the draft-bars. The cranks of the rotary harrows are connected by a transverse bar.

Double rotary harrow.

The circular tine-frames are so hung to the frame as to rotate on their axes when dragged upon the ground. This motion is sometimes produced by hanging them eccentrically, so as to have a greater resistance on one side than the other.

Rotary harrow.

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