| 摘要 |
Seed-spacing drill having a plurality of seed-spacing sowing units which are articulated on a supporting frame and the separating members of which are driven by an impeller via a control gear having a plurality of chain wheels, a transmission device being arranged between the output shaft of the impeller and the drive shaft of the control gear. In order to afford the possibility of a simple and convenient change-over of a chain-wheel gear, provision is made for the drive shaft (14) of the control gear (10) to be arranged movably in the radial direction and so as to be lockable (Figure 2). <IMAGE>
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