| 摘要 |
Said seed drill comprises means on either side of the unwinding frame for eliminating the traces of the tractor, film-cutting and film-burying means 9 mounted vertically adjustably above the width of the film, so as to be capable of executing a semicircular movement towards the front or towards the rear, depending on whether the cutting of the film and the simultaneous burying take place at the start or at the end of a row, for each sowing sprocket wheel 13 a double two-part frame formed from two bars 14-15, of which the first coupling bar 14 has its end articulated on a rear crossmember 16 of the unwinding frame 2 and of which the other end is articulated on the central part of a bar 15 forming the second part of the double frame, between the sprocket wheel 13 and the corresponding driving wheel 17 mounted at the rear of this second bar, and means combined with the driving wheel, for controlling and correcting the direction of the seed drill on sloping land. This seed drill affords uniform sowing on any land; its operation, production and maintenance are relatively simple, thus bringing about savings in terms of time and money. <IMAGE>
|
