Abstract: The invention relates to a yarn-tensioning device for producing a specific thread pull on a thread (5) that is unwound from a winding point (7) of a creel (2) and is guided to a warping machine arrangement (1). Said yarn-tensioning device comprises a rotating body (18) which is at least partially wound round by threads and an electric motor (19) which is connected to the rotation body. Said motor (19) is equipped with at least one brake transistor (20) for discharging excess energy produced when the generator of the motor is operated, said brake transistor being able to convert generator energy, arising when the generator is operated, into heat.

Abstract: The invention relates to a yarn-tensioning device for producing a specific thread pull on a thread (5) that is unwound from a winding point (7) of a creel (2) and is guided to a warping machine arrangement (1). Said yarn-tensioning device comprises a rotating body (18) which is at least partially wound round by threads and an electric motor (19) which is connected to the rotation body. Said motor (19) is equipped with at least one brake transistor (20) for discharging excess energy produced when the generator of the motor is operated, said brake transistor being able to convert generator energy, arising when the generator is operated, into heat.

Abstract: The invention concerns a creel (2) comprising a plurality of winding heads (7) from which several yarns of the same type or of different types are drawn simultaneously by means of a winding machine (3). Said creel comprises at least one dynamic yarn tension device (6) which is associated with each winding head and at which a variable braking force is applied to the yarn to produce a predetermined yarn tension. Each yarn tension device (6) can be activated by means of an associated drive motor (20). Said creel (2) comprises a control device for controlling the yarn tension based on the angular speed or the yarn speed during a start-up and/or an interruption of the winding machine (3), as well as a regulator (25) for regulating the yarn tension during the normal stationary phase of the winding machine (3). The control device and the regulator (25) are designed such that the yarn tension or the output tension of each yarn can be maintained at a substantially constant level relative to a setpoint value.

Abstract: The invention relates to a method for winding a strip (17) consisting of a plurality of parallel threads (18) onto a rotating warping drum (2), wherein the winding position of each individual thread is determined with the aid of a thread guide (21) which is associated with a thread selection device (8) and which is allocated to said thread. The thread guides (21) are displaced in the direction of the axis of rotation (6) of the warping drum (2) from a rest position into a working position and the individual threads (18) are seized successively by an internal thread carrier (30) associated with the warping drum (2).

Abstract: The invention relates to a method for thread distribution in a warping frame (1) which comprises a yarn package (2) for coiling a coil consisting of a plurality of threads (18). According to said method, a warp for producing a thread crossing or thread separation is produced, while the yarn package rotates, at the start and/or the end of a coil in a circumferential area of the yarn package (2) using warp shedding combs (40, 40a, 40b) disposed in the circumferential area of the coil (2). A partial element, especially a partial thread (49) or an auxiliary crossing rod (34, 56) is introduced into the open warp (51) while the yarn package rotates.

Abstract: The invention relates to a method for thread distribution in a warping frame (1) which comprises a yarn package (2) for coiling a coil consisting of a plurality of threads (18). According to said method, a warp for producing a thread crossing or thread separation is produced, while the yarn package rotates, at the start and/or the end of a coil in a circumferential area of the yarn package (2) using warp shedding combs (40, 40a, 40b) disposed in the circumferential area of the coil (2). A partial element, especially a partial thread (49) or an auxiliary crossing rod (34, 56) is introduced into the open warp (51) while the yarn package rotates.

Abstract: The invention relates to a method for winding a ribbon (17), which is comprised of a number of parallel threads (18), onto a rotating warping drum (2), during which a ribbon lap (66) is moved in a forward direction (e) with the aid of conveyor belts (70), which are placed on the peripheral area of the winding body (2), after the ribbon lap (66) has been constructed. The winding position of each individual thread on the warping drum (2) is established during the winding process with a thread guide (21) assigned to this thread.

Abstract: During the relative displacement between a warping stand with a warping drum and a beaming stand with a warp beam for rewinding a thread group, mutual support takes place at a supporting bearing. In this way, very high warp tensions can be adopted, without the risk that the warping stand will tilt and without the latter having to be loaded with additional weights.

Abstract: When winding individual warp strip sections, the ends of the warp strips are fixed onto the surface of the same section at least at two adjacent warp strip sections. At each second warp strip section, a base element is attached to the warp strip, onto which the ends of the warp strip, by means of connecting elements mounted thereon, can be adhered. The time required for attaching the base elements is thus reduced.

Abstract: At least one thread tension sensor for each thread is provided on a winding machine. The actual value of thread tension is measured for each thread. The actual value is compared with a specified value in a comparator device and, in the event of a deviation being determined between the actual value and the specified value, a drive motor is actuated to adjust the thread brake of the thread concerned. This arrangement allows for the maintaining of a constant thread tension by a control circuit. The thread tension sensor can be used not only to control the thread tension, but also to monitor the specified thread tension range, and as a thread break monitor.

Abstract: At least one thread tension sensor for each thread is provided on a winding machine. The actual value of thread tension is measured for each thread. The actual value is compared with a specified value in a comparator device and, in the event of a deviation being determined between the actual value and the specified value, a drive motor is actuated to adjust the thread brake of the thread concerned. This arrangement allows for the maintaining of a constant thread tension by a control circuit. The thread tension sensor can be used not only to control the thread tension, but also to monitor the specified thread tension range, and as a thread break monitor.

Abstract: For inserting a dividing cord loop into the opened shed warp on a sectional warping machine, a dividing device has at its disposal an introduction element (28) with a first, preferably movable guide arm (26) and a second, preferably stationary guide arm (27). The free ends (29, 31) of the two guide arms may preferably be led together in a pincer-like movement. The guide arms are preferably designed as tubes which in the led-together condition form a flow channel. With the help of an air conveyor (35), from a bobbin chamber (28) a dividing cord may be drawn off and as a loop be layed around a divided shed warp lying between the two guide arms and by way of a knotting means be connected to a cord loop. The connected cord loop is thereafter by way of a suction device or a blower device positioned and tensioned in a manner such that the cord loop bears at least on one side on the divided shed warp or on the warp web.

Abstract: For inserting a dividing cord loop into the opened shed warp on a sectional warping machine, a dividing device has at its disposal an introduction element (28) with a first, preferably movable guide arm (26) and a second, preferably stationary guide arm (27). The free ends (29, 31) of the two guide arms may preferably be led together in a pincer-like movement. The guide arms are preferably designed as tubes which in the led-together condition form a flow channel. With the help of an air conveyor (35), from a bobbin chamber (28) a dividing cord may be drawn off and as a loop be layed around a divided shed warp lying between the two guide arms and by way of a knotting means be connected to a cord loop. The connected cord loop is thereafter by way of a suction device or a blower device positioned and tensioned in a manner such that the cord loop bears at least on one side on the divided shed warp or on the warp web.

Abstract: The yarn sheet (1) of a finished yarn winding (2) for example on a warping machine is with the help of a transfer means (8) transferred onto a winding beam (3) for example of a beaming machine. The transfer means with this has a suspension rod (9) which preferably can be displaced on a transport chain pair (10) along an advance path from the region of the yarn winding (2) to the region of the winding beam (3).

Abstract: In a process for the application of a vat dye, preferably indigo, to a thread bundle (1), before thread bundle (1) enters a dye liquor (3) it is run through a steam lock (5). Steam lock (5) is separated from a chamber (20) through which thread bundle (1) is run after leaving dye liquor (3) via a holding section (21) in an essentially oxygen-free atmosphere.

Abstract: On a sectional warping machine, the dividing-shed formation for introducing a dividing element is controlled in such a way that at least one yarn sensor (18, 18') is introduced transversely to the running direction of the shed warp (11, 12) into the opened dividing shed (15). The yarn sensor generates a control signal on detecting an incorrectly arranged yarn (34) in the feed area. The yarn sensor is preferably introduced into the dividing shed (15) together with a motor-driven element transporter (13), wherein the drive of the element transporter can be switched off and/or reversed by the control signal.

Abstract: A manipulator (16) is provided in the case of a method and device for winding of warp strips (19) in at least two adjacently arranged sections onto the drum (9) of a sectional warping plant. On completion of the winding sequence for a section, the yarns of the warping strip (19) are separated, and not only the strip-start (29) oriented towards the yarn feed arrangement (10, 11) but also the strip-end oriented towards the drum (9) is joined by at least one flat body (18, 18a), transverse to the run of the yarns, and are thus fixed.

Abstract: After yarn breakage, yarn loops are formed in an accumulator device (3) by rollers (13, 13') that are able to be displaced in relation to each other. The beam is rotated in reverse at a specific reverse speed (c) which is less than the accumulation speed of the accumulator rollers (13, 13'). The length difference arising from the difference between both the speeds is compensated by further withdrawal of yarns (a) from the creel (1) while the yarns are subjected to a defined braking tension of the individual yarn tensioners (7). Complex controls and speed synchronization are thus avoided.

Abstract: An impact element (12, 17), which is connected with a spring device (15), is tensioned through the feed movement of the package carrier rods (5) and, when a trigger position (23) is reached, will be released in such a way that a force impulse (I) is delivered in the direction of the nearest adjacent spindle (6), respectively a remnant package (2) or empty bobbin (3) mounted on said spindle. With that, the impact element transmits a force impulse, first of all onto a lossely mounted impact disc (19) which can be utilised with various bobbin formats and which protects the remnant packages.

Abstract: During sizing division, a rod grid (19) comprising lease rods (7a to 7e) is used for the formation of a shed, the rod grid being able to be raised with the aid of a lifting device (22) from a middle position into an upper operating position (O). A lower operating position (U) is limited by a mechanical stop (21), the individual lease rods being sequentially permitted to fall from the upper operating position into the lower operating position by a locking device. At the same time, a yarn shed is opened for each respective cross cord (12) insertion, the yarn shed lying in the same position for each yarn group. The opening angle .beta. of the yarn shed can, in addition, be altered within specific limits. Automation of cross cord insertion is facilitated by this type of shed formation.