| 摘要 |
Tool for working the ground of the circular spike harrow type, that is to say comprising at least one rotor 1, equipped with a plurality of teeth 2. The rotor 1 is in a plane which is inclined with respect to the horizontal so that the teeth 2 leave the ground on a portion of their travel; the said rotor being combined with a disc 3 pierced with orifices each traversed by a tooth 2, this disc 3 being coupled to the rotor 1 by means 4 allowing it to make, with the plane containing the ends of the teeth, an angle such that, during their rotary movement, the teeth 2 are imparted with a relative motion with respect to the disc 3 during which they penetrate the orifices and come back out of the orifices, which has the effect of ridding them of the plant waste which is attached to them. <IMAGE>
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