Abstract: A thread tightener has a hollow body (49) in which is arranged a thread channel (4), as well as a tightening body (10) which may be pressed against the outlet part (49) of the thread channel (4). The hollow body (40) contains a first hollow section (41) and a second hollow section (42) which is rotatively mounted on the first hollow section (41). The thread tightener further has a device (9) for controlling the force with which the tightening body (10) is pressed against the outlet surface (47) of the hollow body (40). This control device (9) has a two-armed lever (11). One of the urns (12) of said lever carries the tightening body (10). The other level arm (13) is coupled by a spring (19) to a slide (30) for adjusting the compression force of the tightening body (10). This slide (30) is coupled by a gear to the rotary hollow insert (42 ). This thread tightener allows the braking force to be very finely adjusted and may have very small dimensions.

Abstract: Individual segments (38, 39) are slid over a divided yarn strip (22) with a dividing device (35) and connected together on both sides (63). By this means separate separating elements (23, 29) are formed.

Abstract: In a housing, two rollers having substantially parallel axes are freely rotatably journaled and bound between them a clamping bite. The thread to be braked is drawn through the clamping bite and thereby drives the rollers. A first of the two rollers is stationarily mounted in the housing. The second roller comprises a cover made of a rubber-elastic material. This second roller is journaled in a pivotable forked lever which is under the action of an angle lever. The second roller can be pressed against the stationary first roller with an adjustable operating bias by means of the angle lever and a force accumulator constituted by a tension spring. Spring means of a rapid braking device constitute a compression spring supported by a braking rod which is axially displaceable between two end positions. The compression spring acts upon a spring bush carrying a nose member. In one of the two end positions of the braking rod the nose member extends with play beneath an arm of the angle lever.

Abstract: A disc brake, formed from a lower disc and an upper disc, is fitted on a carrier which is fastened in position to a warp creel part by means of a single screw. The lower disc rests on a rotary cage which carries a gearwheel. This gearwheel meshes with a pinion on a drive shaft. This drive shaft runs at the point where the thread coming out of the warp creel is to be deflected towards a lapping machine and thereby forms, at the same time, a driven deflecting rod for deflecting the thread. Moreover, connected turnably to the drive shaft is a beveled part which forms, with its surface, part of a peripheral positioning of the upper disc and, at the same time, causes the upper disc to turn intermittently via the frictional connection with this upper disc. A pressure element, which is clamped releasably in a clamping piece, acts centrally on the upper disc.