| 摘要 |
<p>A spreader suitable for distributing fertilizer, for example, has fastening members (38, 39) by which the spreader is hitched to a tractor. The fastening members (38, 39) are displaceable, but are retained in their normal positions, in which the spreader is horizontal, by spring-loaded detents (61, 85). To tilt the spreader to achieve a narrower spreading width on one side, the speader is lowered to the ground to relieve the fastening members (38, 39) of the weight of the spreader, the appropriate detent (61, 85) is moved out of engagement with its fastening member (38, 39), and the spreader is raised. The released fastening member (38, 39) can pivot upwardly until it meets a stop (82, 88), with the result that the spreader is lifted in a tilted disposition. To return to the normal horizontal position, the spreader is lowered again, which causes a control member (81) to engage the lifting arm (40, 41) connected to the released fastening member (38, 39). The control member (81) causes the fastening member (38, 39) to be returned to its original position, where it is automatically engaged by the detent (61, 85).</p> |
