Abstract: The subject matter of the invention is a device for regulating the tension of a thread unwound from a bobbin of a bobbin-holder for a leno selvedge apparatus, said device comprising a brake drum for receiving the bobbin-holder, said brake drum having a brake means and the device being provided with a guide arm for the thread of the bobbin, the brake means (4) comprising a pivotable brake lever (10) having a brake shoe (4) resting against the brake drum (1), with the brake lever (10) having a guide arm (20) provided with an eye (21) for passage of the thread (6) unwound from the bobbin (5).

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: Method for warping with a cone sectional warping machine, which winds threads in bands on a warping drum, wherein a support for a thread guide comb and the warping drum are displaced in relation to each other in correspondence with the increasing thickness of winding and predetermined warping data. The first band is monitored during a first measuring phase by a roll exerting contact pressure and the monitored displacement path is recorded as a function of the number of rotations of the warping drum. Roll pressure on the winding during the measuring phase is continuously monitored using measuring techniques. Displacement of the support is corrected if monitoring results differ from a predetermined setpoint. In order to even out the formation of the wind, the roll is arranged at a given distance from the warping drum when warping of the first band is started. The monitoring of the roll is automatically started with increasing thickness of the winding as soon as the winding causes the roll to rotate.

Abstract: An apparatus is disclosed for the formation of yarn turns on a warper support. The yarn is loaded onto a support intended for a samples weaving loom, in a warper utilizing a suitably programmed thread-by-thread warping system. The apparatus includes a support for thread turns and a thread holding member with a thread-guide driven into continuous motion for drawing a thread along and forming the thread turns on the support. A thread device for retaining and presenting and recovering thread from the thread holding member is provided which includes a plurality of members each of which handles thread coming from a creel. A release system for the release of thread from the thread-guide of the thread holding member is provided. The release system has a plurality of release devices associated in close proximity to the members of the thread device. Each of the release devices is selectively controlled to operate the release of at least one of the threads.

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: In a warping machine, once a temporary feed speed for a warping reed is set in synchronism with the speed of rotation of the warping drum, the winding thickness of the warp lap is detected several times and the feed speed is corrected depending on the number of revolutions of the warping drum and the winding thickness that results therefrom. The winding of the warp lap is then completed at the corrected feed speed. During a starting phase, a theoretically correct feed speed for at least the first revolution of the warping drum is derived from warp parameters, such as the total number of threads, the width of the warp and the yarn count. The winding thickness of the first warp section is continuously and contactlessly measured during a learning phase that follows the starting phase, or during the starting phase. For that purpose, a winding thickness measurement arrangement is held at a predetermined, substantially constant distance from the surface of the warp layer that has just been wound.

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: In a process for the production of short warps, especially pattern weaves, an individual thread (1) of different or the same color is wound up on a wind surface (9,11) sequentially with turns lying next to each other in an individual layer. This layer corresponds to the warp length. A thread guide (4) is movable around the circumferential contour of a wind-up arrangement (2) in the wind plane. A forwarding arrangement further moves the side-by-side wound thread warp at each circuit of the thread guide (4) by an amount equivalent to the thread thickness. The first individual threads (1) are wound on a support surface (11) displaceable orthogonal to the wind plane (10). Each further individual thread (1) is wound onto the previously wound thread warp (18), having been displaced rearwardly by an amount at least equivalent to one thread thickness.

Abstract: An arrangement can produce short warps, in particular for woven patterns in which threads (1) of different colors are wound onto a winding arrangement in single layers next to each other and sequentially with respect to each other. The arrangement has positioned at one end face (8) of the winding arrangement a thread laying device (4), which rotates around the circumferential contour of the winding arrangement (2). At least one thread (1) is pulled from a spool (14) in a spool magazine (12) and laid off onto a feed arrangement (16) located on the circumference of the winding arrangement (2) in a winding plane. This feed arrangement transports the wound up thread sheet perpendicular to the winding plane by an amount corresponding to the wind growth. The thread sheet, obtained as an endless sheet band in the direction transverse to the winding direction, can be cut open after completion of the thread warp.

Abstract: Threads are warped with an axially moveable slide onto a drum having a cone, into a plurality of successive warp bands. The threads are warped for a first band based on a predetermined advancement schedule for the slide. The warping of the first band, after a predetermined initial phase, is performed by: (a) measuring an aspect parameter, signifying the form of the winding of the first band, (b) correcting the predetermined advancement schedule of the slide based on a comparison of the aspect parameter and a targeted parametric value to compose a corrected advancement schedule, and (c) storing a successive plurality of descriptive parameters signifying the evolving form of the winding of the band, when successive revolutions of the drum meet a predetermined drum schedule.

Abstract: With the automatic shedding mechanism according to this invention, the warping conditions are inputted by using the program setting unit 151. When it arrives at the predetermined position, the warping drum stops rotating. The closed reed 38 is operated to from lease, into which the lease rods 88 enter so as to maintain the lease and move upward to keep the lease. Next, the lease tape driving mechanism 94 is operated to have its movable unit 98 advance, so that the lease tapes T will be let off onto the warping drum 12 to the predetermined amount. Then the lease tapes go between the lease to maintain them. The above operation will be repeated for every band for the number of times according to the total number of the warping yarns and warping width. Therefore the shedding procedure will be continuously performed without cutting the warping yarns for each band. After the warping procedure, the lease cords are passed through the holes on the heddle hooks at the leading ends of the lease tapes.

Abstract: Separate drive motors (30, 35) for the positioning of the warping carriage (25) in the X-, respectively the Y-direction, are provided on a cone section warping machine. In addition to that, separate servo signals for both the servo motors (30, 35) are generated, whereby not only the absolute value of the servo signals but also their relationship to one another is stored and is able to be corrected through correction values. For the correction, a program control device (62) and/or a regulator (67), respectively correction circuits (64, 66), are provided.

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: On the warping machine (12) the width (11) of the yarn strip (10) is continuously monitored by means of a line camera (25). The measured strip width is compared in a processor (32) to a stored reference value, with deviations forming a control signal for activating a control motor (35) at the warping reed (9). That ensures continuous strip width regulation, at full winding speed.

Abstract: A method for manufacturing loom beams for woven fabrics comprising the step of preparing a dividable warper beam which has the form of dividing a conventional single large warper beam into a plurality of divisional warper beams each having a uniform or non-uniform width and the step of using properly these beams together with the single large warper beams to utilize the maximum content of creel at a sizing or warping machine so that the generation of residual yarns can be minimized.

Abstract: An apparatus for producing pattern warps on a cone warping machine comprises a drum, a support, a warping reed and lease rods, means for displacing the lease rods, and a driving means for rotating the drum. There is provided a tong-type gripper (60) for shifting the lease rods (61) axially and in height. The warping reed (25) is displaceably supported as a sliding reed from one central position to both sides, and it may be adjusted vertically with respect to drum (2).

Abstract: A winding drum particularly adapted for the production of short warps, such as cloth designs in multicolor weaving, which includes a winding drum having an exterior peripheral surface upon which thread is wound, the winding drum including an axis of rotation about which the winding drum is rotated, a plurality of lease rods carried by the rotatable with a winding member, a plurality of bobbins each having a cord wound thereupon, the bobbins being carried by and rotatable with the winding member, each cord being connected to an associated lease rod, and the lease rods being mounted for parallel and transverse movement relative to the winding drum whereby any cord can be selectively adapted to define a demarcation zone between yarn wound in successive groups upon the winding drum peripheral surface.

Abstract: During warping, the threads removed from the bobbins of a warp creel are supplied by means of a respective adjustable and settable thread brake to a reed located on the warping carriage of the warping machine and from that location the threads are ordered or arranged in a warp section prior to winding onto the warping drum. During operation of the warping machine, all of the thread brakes can be simultaneously adjusted by a central brake adjusting device controlled by control signals of a processor which, prior to the start of warping, stores by means of an input station, the warp section tension to be kept constant during operation, apart from other data. In the processor, the set or reference value of the warp section is constantly compared with actual value signals fed into the processor by a tension measuring device. If there exists a set value-actual value difference, the central brake adjusting device is controlled in the sense of correcting the thread tension by means of the thread brakes.

Abstract: In apparatus for the production of short warps, yarns of different color are consecutively wound up while traversing yarn crossing means. A drum having a conically ascending initial portion is provided as a winding body, while lease rods and an overrun rod are displaceably fitted along the drum axis. A support (18) displaceable along the drum axis includes a thread guide means and a heald frame (24) for shedding. In addition to the lease rods (4,5) serving for the formation of yarn crossings, the warping drum comprises further lease rods (5) for the preparation of yarn divisions (86). As for the heald frame (24), it comprises in addition to the two shafts for the yarn crossing formation, further shafts (27a,b,c . . . ) of a number of corresponding to the yarn divisions of the yarn package.

Abstract: Apparatus for the production of short warps, particularly cloth designs in multicolor weaving in which differently colored yarns are wound one after the other and are crossed while being wound, including a drum of generally conical configuration upon which yarn is wound, the drum being rotated during a winding operation, a carriage adjacent the drum, guideways supporting the carriage for sliding movement generally parallel to the axis of the drum, the carrier having detachably secured thereto a carrier section, a slide bar carried by the carrier section for separating selected yarn from remaining yarn, the slide bar being movable generally parallel to and transversely of the drum axis to separate selected yarn, at least one lease rod and one overrun rod carried by the carrier section for movement parallel to the drum axis, and a cam for moving the lease rod generally transversely of the drum axis and the overrun rod generally parallel to the drum axis.

Abstract: A weaving loom. A mid-beam subassembly includes a pair of horizontal supports, one secured to each of a spaced-apart pair of uprights, and supporting between them a cloth beam and a sectional warp beam. Both beams have, at one end, a handle and a ratchet wheel engageable by a pawl pivotally mounted to a support. The warp beam has a series of rails carrying section-defining dowels. A top-beam subassembly comprises a pair of horizontal supports, one secured to each pair of uprights, each having a forward portion longer than its back portion. A stationary cylindrical breast beam joins the forward portions, and a stationary cylindrical back beam joins the back portions. A pair of upright stanchions have three vertically spaced apart notches apiece. A server rail joins the lower ends of the stanchions, and an accessory bar joins the stanchions near their upper ends.

Abstract: An apparatus for controlling the movements of a reed carriage of a warping machine during warping a package composed of successive adjacent warp sections wound onto the warping drum of the warping machine, wherein the displacement of the carriage for producing the shifted deposition of the warp section-layers during winding is accomplished by a reed carriage-displacement spindle which is driven by means of a pre-adjustable change-speed gearing as a function of the rotation of the warping drum.

Abstract: An apparatus for controlling the application of warp sections during warping, wherein a winding of predetermined length of warp threads and application height should be exposed to a warping operation wherein successive threads withdrawn from the bobbins of a bobbin creel and each delivered by means of a stop motion, thread brake to a warping reed and at that location formed into a warp section upon the winding drum of a winding machine. According to the invention there are provided means for calculating at any point in time a theoretical, momentary reference-application of the wound-up warp sections on the basis of fixed data inherent to the material undergoing warping and the number of revolutions of the winding drum.