Abstract: An oloid-shaped body is placed on, and driven by, a conveyor belt. Two embodiments of the oloid shaped body are a hollow body with a closable opening, and a skeleton body for attachment of vessels. A shaft is attached to the oloid-shaped body and has the position and direction of the longitudinal axis of the oloid-shaped body. A hollow shaft allows access to the oloid-shaped body during movement. A frame is positioned on either side of the conveyor belt, with a plurality of spring attachments connecting an oval guiding rail to each of the frames. A carriage runs around each of the guiding rails and guides an end of the shaft in an oval path. In this manner the oloid-shaped body tumbles in a stationary location on the conveyor belt. An alternative to using the combination of frames, guiding rails, and carriages, is the use of a mechanism which causes the two ends of the shaft to rotate in the same rotational path but in opposite directions.

Abstract: A tumbler body with an oloid hollow body (7) is positioned on two free-moving, endless conveyor belts (8). A strip (10) runs around and is attached to the hollow body (7) limited by two profiles (9). The strip (10) maintains a positive connection to a driving element in form of an endless belt. The profiles (9) sink into the area of the guiding and driving system (11) in between the conveyor belts (8). The system contains and combines a guide for guiding the profiles (9) and a drive for driving the driving elements. The conveyor belts (8) glide on the low-friction tables (12) supported by a frame (14) which is also the attachment point for the guiding and driving system. The frame (14) is supported by a base (15).

Abstract: A spiral filtering device disposed within a frame consisting of two draw bars and two end pieces. The spiral filter consists of at least one spiral plate and at least two support plates with attached filter plates inserted between two end plates. On each of their plane machined surfaces, the spiral plates have a spiral groove of approximately semicircular cross-section. In addition, each surface of the spiral plate has a round depression with a boss in the shape of the bottom of a bottle. The groove is surrounded by a circular channel which is also recessed. The helicity of both grooves on the surfaces of the spiral plates is the same. The outer ends of the grooves are interconnected by a drilled channel at a shallow angle to the surface of the spiral plate. The inner ends of the grooves are connected to their respective recesses by a drilled channel running substantially parallel to the surface of the spiral plate.