Abstract: An air-filter device has folded filters which form a plurality of filter regions. The device possesses at least one cleaning device for a filter region. On the crude-air side, the cleaning device has a mechanism which generates a transport flow, parallel to the folded filters and directed transversely to the air flow in the filter mode, and a disposal outlet for the material conveyed by the transport flow. On the clean-air side, the air-filter device possesses a comb nozzle which is movable along the filter region and which has a plurality of nozzles arranged in one plane and directed to the folded filter.

Abstract: A device and process for mass transfer between liquid and gaseous media. Obstacles in the form of orifice plates or discs are installed in a flow channel bearing a gaseous medium, of the device. The obstacles define between them cavities which act as resonance cavities which result in flow forms and pulsations which lead to improved mass transfer with the liquid medium sprayed in through a high-pressure nozzle.

Abstract: A combing cylinder for a combing machine having a combing segment with a wing-shaped profile. This segment is fastenend on the body of the cylinder. An air duct is arranged between the inside surface of the combing segment and the outer cylindrical surface of the cylinder body. Because of the cooperation between the wing-shaped profile of the combing segment and the air duct, the air flow produced by the rotation of the cylinder causes a suction effect which pulls the fibers towards the advancing comb. This suction assures early engagement of the fiber fringe to be combed by the teeth of the combing segment.

Abstract: In order to remove broken threads and debris from textile drawing equipment having a drawing cylinder, a suction pipe connected to an air pressure sink is provided with a triangular suction opening at the drawing cylinder for removing the broken threads and debris. For substantially improved performance at essentially the same air throughput, the suction pipe, in continuation of its triangular suction opening, is provided with a triangular cross-section being congruent with the triangular suction opening and extending along a major portion of the length of the suction pipe, such as to the vicinity of its connection to the air pressure sink.

Abstract: A blade structure for wiping cylinders of textile machines has a wiping blade including a mounting base along a length thereof, and a mounting bar having a longitudinal slot shaped for receiving the mounting base in interlocking engagement over its length. The longitudinal slot may have an enlargement extending inside the mounting bar along its length, and the mounting base of the wiping blade may conform in cross-section to that enlargement. When the wiping blade has a projecting free wiping lip, the mounting bar may have a leg projecting to that free wiping lip along the length of and in contact with the wiping blade.