Abstract: The invention relates to an electromotively operating device (1) for forming a leno selvedge, comprising a rotor (10) having two thread-guide eyelets (14) arranged diagonally opposite each other in the rotor (10) for the leno threads, and a stator (30) accommodating the rotor (10). The rotor (10) has a magnetic disk (16), wherein the magnetic disk (16) has a plurality of alternately positive and negative magnetized segments (17), which are oriented in an axial direction of the rotor (10).

Abstract: The invention relates to an electromotively operating device (1) for forming a leno selvedge, comprising a rotor (10) having two thread-guide eyelets (14) arranged diagonally opposite each other in the rotor (10) for the leno threads, and a stator (30) accommodating the rotor (10). The rotor (10) has a magnetic disk (16), wherein the magnetic disk (16) has a plurality of alternately positive and negative magnetized segments (17), which are oriented in an axial direction of the rotor (10).

Abstract: An apparatus for forming a leno selvage, in particular for a loom, includes a fixed-position housing, a support having the shape of a circular ring or of a circular disk and rotatably supported in the housing by a bearing and having two diagonally oppositely disposed thread eyelets for guiding leno threads in the region of the inner race of the bearing. At least two ring gears of magnetizable material extending in parallel with one another are arranged on the outer periphery of the support. A plurality of magnets are arranged on the outer periphery of the support in the region of the ring gears. A stator sheet package of circular ring shape having a plurality of coils arranged thereat has segments each having a toothed arrangement associated with the toothed arrangement of the ring gears in the region of the coils.

Abstract: An apparatus for forming a leno selvage, in particular for a loom, includes a fixed-position housing, a support having the shape of a circular ring or of a circular disk and rotatably supported in the housing by a bearing and having two diagonally oppositely disposed thread eyelets for guiding leno threads in the region of the inner race of the bearing. At least two ring gears of magnetizable material extending in parallel with one another are arranged on the outer periphery of the support. A plurality of magnets are arranged on the outer periphery of the support in the region of the ring gears. A stator sheet package of circular ring shape having a plurality of coils arranged thereat has segments each having a toothed arrangement associated with the toothed arrangement of the ring gears in the region of the coils.

Abstract: A device for manufacturing a fabric has a plurality of automatically working apparatus arranged next to one another on at least one carrier for manufacturing a leno weave (a leno weave apparatus). Two leno threads are fed to each leno weave apparatus. The device has at least one weft thread picking device; wherein the weft thread is introduced into the shed of leno threads raised by a plurality of leno weave apparatus. The weft thread is bound using at least two leno threads at a plurality of points behind the weft thread over the width of the fabric. At least one of the leno weave apparatus arranged in the end region of the fabric carries out a higher number of interlacings for achieving a homogenized warp tension distribution over the width of the fabric; and/or the lowering of the shed is carried out by the leno weave apparatus over the width of the fabric at different times for achieving a homogenized warp tension distribution.

Abstract: The subject of the invention is a device for manufacturing a fabric comprising a plurality of automatically working apparatus arranged next to one another on at least one carrier for manufacturing a leno weave (a leno weave apparatus), wherein two leno threads are fed to each leno weave apparatus; wherein the device for manufacturing the fabric has at least one weft thread picking device; wherein the weft thread is introduced into the shed of leno threads raised by a plurality of leno weave apparatus; wherein the weft thread is bound using at least two leno threads at a plurality of points behind the weft thread over the width of the fabric; wherein at least one of the leno weave apparatus arranged in the end region of the fabric carries out a higher number of interlacings for achieving a homogenized warp tension distribution over the width of the fabric than at least one leno weave apparatus arranged in the central region of the fabric; and/or wherein the lowering of the shed is carried out by the leno weave

Abstract: A device for the formation of a leno selvedge includes a frame for installation on the heddle shafts of a loom. The frame has at least one needle pair for two leno threads. The needle pair is mounted in the frame so that it can pivot around the longitudinal axis of the frame, and the device includes a pivot drive for pivoting the needle pair.

Abstract: A device for the formation of a leno selvedge includes a frame for installation on the heddle shafts of a loom. The frame has at least one needle pair for two leno threads. The needle pair is mounted in the frame so that it can pivot around the longitudinal axis of the frame, and the device includes a pivot drive for pivoting the needle pair.

Abstract: The subject matter of the invention is a heddle (1), more specifically a lifting heddle as part of a leno selvedge device, the heddle comprising a head portion and a base portion with a closed or an open eyelet for mounting to a heddle frame or to a heddle ridge bar (13), the head portion and/or base portion (2, 3) being adapted to be secured stationarily to the heddle frame or the heddle ridge bar (13), with the head portion (2) and/or the base portion (3) being adapted to be interlockingly and non-slidably fixed to the heddle frame or to the heddle ridge bar (13) by means of a detent system (11, 12, 13a).

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: The subject matter of the invention is a heald (1), more specifically a lifting heald as a part of a leno selvedge device, said heald comprising a head portion and a base portion with a closed or an open eyelet for mounting to a heald frame or to a heald ridge bar (13), said head portion and/or base portion (2, 3) being adapted to be secured stationarily to the heald frame or the heald ridge bar (13), with the head portion (2) and/or the base portion (3) being adapted to be interlockingly fixed to the heald frame or to the heald ridge bar (13) by means of a detent system (11, 12, 13a).

Abstract: A device (1) for forming a leno selvedge, said device having two lifting healds (10, 20) and one half heald (30), the lifting healds (10, 20) having a securing element (13, 23; 14, 24) provided respectively at the upper and lower end thereof, said lifting healds (10,20) having, in the region of the lower end, at least one magnet for the foot (31a, 32a) of the half heald (30), each lifting heald (10, 20) having at least one magnet (18, 28) in the region of its upper end, the magnets (18, 28) of the two lifting healds (10, 20) of a leno selvedge device being polarized such that the healds attract each other.

Abstract: The device for detecting breakage of leno threads in leno selvedge devices on looms, the leno selvedge forming device being provided with at least two arms for guiding at least two leno threads, the leno threads being twistable together by virtue of the rotation of the arms, the device (12, 13, 14, 14a) for detecting thread breakage being provided with a facility (13, 14) for determining the natural oscillations of the arms (12) and a loom, more specifically with heald frames, with at least one leno device which is reversible in its direction of rotation and with a facility for detecting breakage of the leno threads, the device for detecting thread breakage being arranged in the front shed (V), more specifically between the leno device (10) and the heald frames (20).

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: A device (1) for forming a leno selvedge, said device having two lifting healds (10, 20) and one half heald (30), the lifting healds (10, 20) having a securing element (13, 23; 14, 24) provided respectively at the upper and lower end thereof, said lifting healds (10,20) having, in the region of the lower end, at least one magnet for the foot (31a, 32a) of the half heald (30), each lifting heald (10, 20) having at least one magnet (18, 28) in the region of its upper end, the magnets (18, 28) of the two lifting healds (10, 20) of a leno selvedge device being polarized such that the healds attract each other.

Abstract: The subject matter of the invention is a device for detecting breakage of leno threads in leno selvedge devices on looms, the leno selvedge forming device being provided with at least two arms for guiding at least two leno threads, the leno threads being twistable together by virtue of the rotation of the arms, the device (12, 13, 14, 14a) for detecting thread breakage being provided with a facility (13, 14) for determining the natural oscillations of the arms (12) and a loom, more specifically with heald frames, with at least one leno device which is reversible in its direction of rotation and with a facility for detecting breakage of the leno threads, the device for detecting thread breakage being arranged in the front shed (V), more specifically between the leno device (10) and the heald frames (20).

Abstract: A device for producing a leno selvedge for a loom receives a weft thread and comprises: heald frames which form a shed. The device comprises an electric motor with a rotor having two guide elements for doup ends, and a control system. The electric motor is driven by the control system. In one embodiment, the control system of the electric motor is given a pilot pulse generated from the opening or closing of the shed at the very moment when the loom is starting to open or to close the shed. In another embodiment, the control system of the electric motor is given a pilot pulse, generated by the insertion of or completion of the insertion of, the weft thread, at the very moment when the insertion of the weft thread is starting or when the weft insertion has been accomplished.

Abstract: In a leno selvedge device, an apparatus for adjusting thread tension of the doup ends and of the stationary threads that are guided through the leno selvedge forming device includes a holding structure accommodated directly in front of the leno selvedge device which keeps the stationary thread and/or the doup end under resilient tension. The holding structure includes at least one eyelet, through which thread is threaded. The eyelet is kept under tension by a spring and disposes the thread in a downward direction.

Abstract: Device for forming a leno selvedge with an electric motor comprising a rotor (1; 200) and a stator casing (10) accommodating the rotor, whereas the rotor is provided with at least two guiding apertures (3; 216, 216b) for the doup ends and whereas the rotor (1, 200) is provided with several magnetic poles oriented in axial direction, the rotor (1; 200) being provided with two spaced magnetic rings (210, 220) arranged in radial direction, the magnetic rings (210, 220) being provided with several magnet segments (2; 211, 212; 221, 222) each, the magnet segments (2; 211, 212) of the one magnetic ring (2; 210) being locally offset relative to those of the other magnetic ring (2; 210, 220), whereas the rotor (1; 100) is received on both sides in axial direction by the stator casing (10; 225), whereas the stator casing (10; 225) is provided with iron cores (11; 230, 240) with appropriate windings (12; 250), the ends of which being oriented toward the magnetic poles of the rotor.

Abstract: Half heald of a leno selvedge with lifting healds, whereas the half heald has two arms that may be joined together on their upper end so as to form a head and that are provided on their lower end with a foot, whereas the foot is magnetically co-operating with the at least one magnet of the lifting heald, and whereas the foot (70, 80) of the half heald (50) is given a shape that allows the magnetic force exerted onto the foot of the half heald in the stroke direction (arrow 100) of the lifting healds (2, 3) to be smaller than in the reverse direction, whereas the foot (70, 80) is provided with an upper end being designed as a border (71, 81) so that the half heald (59) is alternately magnetically brakable by the lifting healds (2, 3).