| 摘要 |
PROBLEM TO BE SOLVED: To provide a weeder designed to shave off weeds not only at the bottom of furrows but also on ridge slopes and also cut off weeds fallen from the upper parts of ridges onto furrows to prevent the weeds from clinging to the shaft through solving such a problem involved in conventional weeders intended mainly for weeding the bottom of furrows that weeds often cling to the shafts, resulting in suspending weeding operation sometimes. SOLUTION: The weeder has the following construction: Drive shafts (2) and (2) projected left and right at the underside of a transmission case (1) housed with a transmission mechanism are set respectively with boards (4) and (5) with larger inner side and smaller outer side, and both of the boards (4) and (5) are spanned with a blade (3) having a main blade part (6a) with its edge point concentrically rotatable about the rotating center, wherein the outer end of the blade (3) is provided with an inclined blade part (6b) with the outer side of its edge point being closer to the rotating center side. COPYRIGHT: (C)2007,JPO&INPIT
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