Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn is conveyed into a crimping device in two steps. In the first step, the yarn is taken in by a conveying fluid stream of a first feed nozzle at a yarn intake speed. In the second step the yarn is advanced by a conveying fluid stream of a second feed nozzle at a second yarn conveying speed into the crimping device. In this process, the second yarn conveying speed is at least the same as or greater than the intake speed.

Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn is conveyed into a crimping device in two steps. In the first step, the yarn is taken in by a conveying fluid stream of a first feed nozzle at a yarn intake speed. In the second step the yarn is advanced by a conveying fluid stream of a second feed nozzle at a second yarn conveying speed into the crimping device. In this process, the second yarn conveying speed is at least the same as or greater than the intake speed.

Abstract: The yarn crossing device of a sectional warping machine has a height adjustable cross reed (16), two guide rods (28, 29) which are able to slide in opposition to each other, as well as a horizontally displaceable leasing device (34, 35). Drive motors (22, 33), which are independent from one another and separately controllable, are allocated at least to the cross reed (16) and to the guide rods (28, 29). Preferably a separate drive motor (38) for the leasing device and a cross-wound motor (17) for the oscillating motion of the cross reed (16) is also provided. The independent drive motors make possible automation and programming of the different operational sequences which are necessary for the formation of yarn crossings or the rectification of breakages.

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 order to make the loading operation on a bobbin creel simpler, a fitting pattern is stored for each kind of bobbin in a control means (21). The individual fitting patterns can be sequentially called up as output signals. Those output signals either activate signal elements which are associated with each mounting device (14) at the bobbin creel (3) or they serve directly for controlling an automatic loading apparatus.

Abstract: The protective apparatus for a winding machine is formed by a support construction comprising pillars and a transverse support member. The support construction is arranged in a portal-like fashion over the winding machine, wall portions in the form of swing doors and an anti-draft plate filling the intermediate space. The wall portions are secured to the support construction and can preferably be actuated automatically by drive means.

Abstract: Creel, including a stationary supporting frame, at least one yarn tension holding element and at least one thread guiding element supported by the stationary supporting frame, bobbin holding assemblies disposed in vicinity of the stationary supporting frame, a plurality of bobbin holding elements carried on each of the bobbin holding assemblies, drive rollers connected to the bobbin holder assemblies for supporting the assemblies on a floor, a separate hood-shaped sliding frame connected to each of the assemblies, and a separate upper cover plate disposed on each of the sliding frames covering the drive rollers and part of the floor for preventing accidents and dust accumulation.

Abstract: Thread braking device including a rotatably driven lower dish and upper dish, a device for applying a load to the upper dish, a guidance housing surrounding and guiding the upper dish, and rotary drive means for rotating the guidance housing.

Abstract: Thread brake including a rotatably driven lower and upper dish, a device for applying a load with adjustable pressure to the upper dish, the device including a chamber, an elastic container of variable volume received in the chamber, and a central compressed-gas supply connected to the elastic container, the elastic container being of such size in non-pressurized condition thereof that, upon being pressurized, the elastic wall thereof is not stretched, and plunger means for transmitting the pressure from the elastic container to the upper dish, the plunger means extending through an opening formed in a wall of the chamber and having a contact surface of predetermined size directed against the elastic container.

Abstract: Assembly includes a closed pneumatic device for applying a load to a thread brake for braking a thread traveling therethrough, the load-applying device including means for storing pressure at a variable volume, and means operatively connected to the closed pneumatic load-applying device for determining and signaling a detrimental pneumatic leakage loss in the load-applying device.

Abstract: A multistage stretching process for producing low shrinkage film bands of a thermoplastic polymer, especially polypropylene, wherein the stretching temperature is increased from one stage to the next under prescribed conditions for each stage and the stretched bands are then heat stabilized with shrinkage in a relaxed condition at a temperature of about 20.degree. C. to 30.degree. C. below the crystalline melting point of the polymer. The resulting film bands are especially useful in carpet backings.

Abstract: An apparatus for the manufacture of an extruded thermoplastic tube in which the freshly extruded tube is cooled and sized or calibrated in a liquid cooling medium by passage through a series of draw plates in which the cooling liquid is fed and directed in a spiral flow path emerging along the circumference of the tube as it passes through the central calibrating opening of each draw plate. The draw plates are preferably immersed in water as the cooling liquid partially filling a tank maintained under a vacuum.