Abstract: An apparatus (10) to carry out a process, in particular for the electrically induced agglomeration of gas-borne particles, contains a closed flow duct (12) through which is directed an aerosol containing particles (14). For the purpose of the bipolar charging of the aerosol, at least one electrode pair (20, 22) is arranged in the flow duct (12), the electrode (20) being wired, so as to be ungrounded, to the negative pole of a current source, the strength of which is sufficient to produce a corona discharge between the electrodes (20 and 22). The electrodes (20 and 22) of each electrode pair are designed to be needle-shaped and are arranged to be insulated with respect to the flow duct walls, such that their tips (26) are disposed opposite each other.

Abstract: In a carding machine having cylinders, which are provided with a clothing of a saw-tooth wire helically wound thereon, carding elements are provided having saw-tooth wire sections, which are arranged at an acute angle to a plane that is transverse to the axis of rotation of the cylinders.

Abstract: The dirt separator for carding machines is located upstream of the doffer cylinder and comprises a knife blade (16) as well as a foot portion or base plate that is provided with a toothed wire clothing (19), which is arranged with a clearance of about 0.25 mm from the main drum of the carding machine. The knife blade (16) is preceeded by a gap (27), which is in fluid flow communication with a suction duct (24).

Abstract: In a web take-off roller assembly for carding machines, a plurality of cooperating rollers are provided and are mounted at each side in first and second lateral members or side plates. One of the rollers, the take-off roller, is mounted in the first lateral members, which is adapted to be fixed to the frame of the carding machine, whereas all the remaining rollers are mounted in the second lateral members, which members are adapted to be pivoted or rotated around an axis which coincides with the axis of the shaft of the take-off roller. By this, the relative position of the remaining rollers may be adjusted with respect to the take-off roller.

Abstract: A dirt separator which is arranged between adjacent carding plates of a carding device and which comprises a knife blade and a collecting rail. Each of these elements is radially adjustable with respect to the main cylinder of the carding device. The knife blade, the collecting rail and a cover form a vacuum chamber that is adapted to be connected to a vacuum source. A longitudinal gap or clearance between the knife blade and the collecting rail serves to extract the dirt or trash from the treated material.

Abstract: A carding plate comprising a base plate having a concave and cylindrically shaped supporting surface adapted to receive a thin metal plate, onto which a plurality of parallely arranged saw-tooth wire segments are fixed. The so formed sub-assembly is clampingly held on the supporting surface by clamping strips, which are designed to be screwed to the base plate such that they exert a pressure on opposite edges of the metal plate.