Abstract: A sealing device of a sliding door with a displaceably mounted door leaf has a lowering seal with a sealing strip and with an actuating mechanism for automatically lowering and raising the sealing strip. The sealing device has an activating unit for activating the lowering seal, wherein the activating unit has a first contact surface, a pivotably designed contact element and a pivotably designed force transmission element. Upon closing of the door leaf, the contact element contacts the first contact surface and moves, during the closing movement of the door leaf, with pivoting of the contact element, along the first contact surface. A pivoting movement of the contact element results in a pivoting movement of the force transmission element, with the result that the latter actuates the lowering seal.

Abstract: A hose cartridge for a peristaltic pump comprises a cartridge housing provided with a lateral recess. The recess is delimited at least partially by an element having essentially the shape of a segment of a circle. A roller wheel of the peristaltic pump can engage that recess once the cartridge is attached to the peristaltic pump. The cartridge housing is provided with two support arms, and a groove extends from one of the support arm along three outer side faces of the cartridge housing to the other support arm. The ends of the support arms are provided each with a hose take-up member for retaining stoppers attached to a hose section. Such a hose cartridge is of very compact design ensures an easy handling.

Abstract: An elbowed yarn exit tube placed at the delivery end of a high-speed hollow rotor contains one or a number of false-twist ribs against which the spun yarn is applied in frictional contact. The ribs form part of a detachable member which is fitted against the periphery of a recess formed in the elbowed portion of the exit tube in the zone nearest the generator-line which has the shortest radius of curvature, the detachable member being locked in position by means of a slidable retaining sleeve.

Abstract: The needles or teeth are rigidly fixed on longitudinal bars mounted on the cylinder body in such a manner as to be capable of pivotal displacement on the cylinder body about axes parallel to the axis of the cylinder. Locking means carried by the cylinder body cooperate with corresponding angular positioning means carried by each needle bar in order to lock all the bars in any predetermined common angular position, thereby setting the needles or teeth at the required angle of inclination.