| 摘要 |
An oscillating harrow having a pair of harrow rings which can be raised and folded easily for transport. Each ring includes a pair of opposed, central segments which are disposed below a ground-travelling frame, and a pair of opposed side segments which are mounted on the central segments for swinging between positions extending laterally and upwardly with respect to the frame. A pair of wing members attached to opposed sides of the frame, adjacent opposed side segments, are shiftable between operative and transport positions. The wing members are coupled to associated side segments through cables which are slack when the members are in their operative positions. As the wing members are swung from their operative to their transport positions, slack in the cables is taken up, causing the side segments to be drawn toward the associated wing members. The side segments are shifted thereby from their lowered, laterally extending positions toward raised, upwardly extending positions, and the two central segments are shifted upwardly away from the ground and toward the lower surface of the frame.
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