MISCHWERK FUER DUENGEMITTEL

摘要

A flowable fertilizer is loaded into the upper mouth of a mixing drum, of the concrete-mixer type, rotatable on a chassis about an axis inclined to the horizontal. This drum is then rotated about its axis to mix the fertilizer and form a blend of a composition specific to the region of application. When the region is reached, the direction of rotation is reversed to bring the mixture up and out the mouth through a door covering its mouth using worm or conveyor elevator formations normally present in a concrete-mixer drum. Below this door is a hopper emptying into two side-by-side spreaders each provided with a feed auger operated by a respective hydraulic motor in turn driven by a respective positive-displacement hydraulic motor rotated by the respective wheel of the chassis or otherwise hydraulically coupled therewith. Thus each spreader distributes the fertilizer at a rate dependent on the rotation speed of the respective wheel for even distribution uniform on curves or U-turns.