| 摘要 |
To permit cultivation using tine-shaped working tools, the levelling tools which are provided for levelling out the troughs and ridges produced by the tines are designed as rotatably mounted concave discs. The concave discs are fastened, singly or in groups, to the frame behind the working tools. The arcuate surfaces are assigned to one another and the concave discs are fastened as such to the frame in an inclined manner in such a way that they throw the soil back into the troughs via their concave surfaces, thus levelling out the ridges in a reliable fashion. The concave discs respectively work above the cultivating level of the tines and are arranged offset relative to one another in the direction of travel, so that the movement of the concave discs cannot be disturbed by clods and similar lumps. <IMAGE>
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