Abstract: A container or hopper with a flexible weigh container as an inner member, in which the weigh container is supported through at least one weigh cell on a frame. In order to weigh-in a material to be proportioned, a throttling device is provided at the bottom end of the weigh container. To avoid complicated distributing arrangements and assure precise dosing, the flexible weigh container extends further downwardly like a hose through the throttling device and its bottom is attached to a movable spout which in turn is displaceable in such a manner that the flexible, hose-like extension of the weigh container is carried along with it so as to selectively discharge through different outlets of the container or hopper.

Abstract: A closure device for the discharge outlet of a bulk material conveying unit which operates under vacuum. The outlet has a circular cross-section, and the outlet opening of the conveying unit is closed by means of a freely movable closure element, particularly a ball. The closing effect is achieved by means of a vacuum in the conveying unit. In the open position, i.e. after the vacuum is switched off, the ball moves downward and rests on a supporting device and thereby forms an annular discharge outlet cross-section which is interrupted only by the struts of the supporting device.

Abstract: A multi-way distributor having at least two mutually parallel and displaceable disks provided with at least two through-holes or connection pieces. At least two flexible tubes are fastened to at least two of these displaceable disks, and by the relative movements of the disks with respect to one another, different connections can be achieved which the distribution of the material flows takes place.