Abstract: Feathered edges of fiberglass fabrics woven on a shuttleless or airjet loom are secured and prevented from ravelling by a glass yarn coated with a hot melt composition. The coated yarn is woven along the longitudinal edges of the fabric, typically in a leno weave, then heated to thermobond the adjacent glass fibers with the hot melt composition at their crossover points. A procedure for applying a hot melt to a yarn through a heated die is used.

Abstract: Device for forming a selvedge or selvedges on woven cloth, consisting essentially of two arms (1, 2) whose ends move to-and-fro in opposite directions, where the first arm (1) has at its end (3) a rotatable thread guide block (5) for the crossing thread or threads, and where the second arm (2) has at least one needle-shaped thread guide (6, 6A, 6B) for the needle thread or threads (27, 27A, 27B) so that the needle thread or threads can be moved up and down in front of the rotatable thread guide block (5) as a result of the motion of the arms (1, 2).

Abstract: The gauze or leno harness comprises a frame-like carrier (2) for a crossing yarn (16) and a guide (4) for a standing yarn (7). A U-shaped guide or deflecting element (20) reciprocates the crossing yarn (16) between the two lanes (13 and 14) of the carrier (2), the crossing yarn (16) crossing the standing yarn (7) in its movements. The element (20) is borne with freedom of movement on the base of the passage (15) between the two lanes (13) and (14). Since the element (20) is freely movable, it cannot become sluggish as a result of becoming dirty.

Abstract: A weaving machine including a device for forming a leno edge is provided wherein the machine has reciprocally moving shafts in which at least one warp thread holder is supported by means of a frame and is arranged on a first one of the shafts for guiding at least one warp thread. A thread guiding device is arranged on a second one of the shafts being guided by the machine frame and having a slanted slot with a support catch at one end thereof for guiding the leno yarn.

Abstract: Leno device for weaving machines, preferably double rapier weaving machines for plain velvet or carpets, designed to obtain non-fraying edges, characterized by the leno device concerned being fitted with one or more parallelograms of bars with vertical sides, the front of which is fitted with thread guides and the back of which is held in the vertical position while the adjacent bars are free to pivot around pivot points at the corner points of the parallelogram, so that the thread guides can move up- and downwards.

Abstract: A device for producing a fabric edge provided with a binding comprising alternately movable harnesses, each carrying a plurality of warp thread holders for one group of warp threads. The holders have ends in one end position of the harnesses which are spaced at a distance apart in the direction of lift in order to form a shed. A guide mechanism moves the warp threads associated with one group laterally away and a binding thread holder for a binding thread binds the warped threads together. The binding thread holder has an end which is movable transversely in the shed. The guide mechanism is in the form of guide bars arranged parallel to each other between two frame rails fastened to the associated harness.

Abstract: The leno attachment is provided with a leno yarn carrier which defines a pair of parallel yarn lanes, a standing yarn needle which may be integral with the carrier or separately spaced from the carrier and a deflecting lever for guiding a leno yarn from one yarn lane to the other in synchronism with a shed change. During deflection from one yarn lane to the other, the leno yarn is able to cross over the standing yarn from left to right and from right to left.In other embodiments, the lever may be replaced by a pin wheel or a pivotally mounted spring.The leno attachment may be used on different types of weaving machines include a jacquard weaving machine.

Abstract: The invention relates to the textile industry and, more particularly, to weaving machines.The device comprises: a support (1) to be fixed on the weaving machine; a first lever (2) oscillating on the said support and provided with at least one tongue (3) which has at its end an eye (27) for guiding an additional warp thread; a second lever (6) also oscillating on the support (1) and provided with two bars (7) which are mounted in sliding fashion against each other in a direction parallel with the fell and which each have at least one eye for guiding a crossing thread; means (15, 16, 34, 35) for actuating pivoting of the two oscillating levers (2, 6); and means (49, 55, 65) for actuating sliding of the bars (7) for guiding the crossing threads, arranged so that each crossing thread passes alternately on either side of the corresponding additional warp thread.The invention is applicable to shuttleless weaving machines.

Abstract: Apparatus for producing a selvage provided with a crossweave, comprising two reciprocally movable weaving shafts on one of which is a needle holder and on the other of which is a main rail with a diagonal slit. A header rail is movably supported adjacent the main rail for limited travel, the header rail having a diagonal slit which overlaps the diagonal slit in the main rail. The main rail is connected to the other weaving shaft by an elastic connection in the form of elastic bands or cords.

Abstract: The invention relates to the fastening of a leno device in shuttleless weaving machines. Leno devices generally are composed of two parts one behind the other, designed in the manner of rails and being mutually displaceable in the longitudinal direction for the purpose of shed-formation and are fastened to two consecutive heddle frames or the heddle slide bars thereof. To facilitate the fastening of the tightly arranged parts, only the upper fastening means on the forward part, that is the leno body supporting the standard thread needles is designed as an immobile fastener, whereas the remaining fastening points of the leno device are designed as quick-fit devices allowing a limited displacement along the heddle slide bars. The most diverse types of quick-fit means such as plug-in or spring-clip connectors, spring-hooks, clamping or snap-in connectors can be used.

Abstract: Increased resistance to unraveling is imparted to a fringe selvage of the type formed by weaving on a fluid weft insertion loom by means of a special selvage construction produced along the opposite side edges of the fabric which combines a pair of twisted binder threads and a juxtaposed leno chain stitch. The binder threads extending along the edges of the warp are opened or separated for the insertion of each weft thread therebetween and then closed and separated in the opposite direction to entwine around the corresponding end of each inserted weft thread while being simultaneously twisted about their own axis and preferably the timing of the closing of the binder threads during the weaving cycle is slightly in advance of the closing of the warp shed itself.

Abstract: A selvage apparatus including a photo-cell type device for detecting abnormal conditions of selvage threads is disclosed. In the detecting device comprising a microprocessor, the number of light interruptions by the selvage threads is counted and compared with a reference number, whereby abnormal conditions are detected on the basis of whether or not the number of light interruptions is less than the reference number.

Abstract: The crossing thread supply system has four bobbin pairs which are disposed on rotatable disk-shaped elements. Each bobbin pair is guided downwardly through a tube which rotates with a respective rotatable element in non-rotatable relative relation. The tube extends obliquely so that all of the tubes deliver the respective thread pairs to twisting disks located in a relatively narrow lane.

Abstract: The crossing thread supply system for the weaving machine employs a rotatable bobbin carrier and a thread tensioning means for controlling a thread pay-out from a bobbin on the carrier as a function of thread tension. The tensioning means employs a control lever which is pivotable under the influence of the paid-out thread and a pivoting lever which engages via a pawl with a ratchet wheel connected to the bobbin carrier. The control lever serves to pivot the pivoting lever when moved to an innermost position. This disengages the pawl from the ratchet wheel to permit indexing of the ratchet wheel and bobbin carrier.

Abstract: A loom comprises: a machine frame; heald frames for supporting ground heddles of warps; and a device for forming a selvedge. The device for forming a selvedge includes: a rotatable member which is rotated by a power transmitting mechanism; and a pair of selvedge yarn guides which are attached to said rotatable member and which are utilized to withdraw the selvedge yarns. The device for forming a selvedge is disposed at the side of the machine frame and behind the heald frames. The selvedge yarns are open and closed in synchronism with the shedding motion of the warps and are formed into a selvedge by twisting the selvedge yarns at every weaving. The device for forming a selvedge is adjustable in a lengthwise and vertical direction of the machine frame.

Abstract: A selvage forming device is provided with cooperating thread distributing elements which perform relative vertical movements to each other over prescribed distances while utilizing shedding motion of harnesses for plain weave only in order to distribute at least one leno warp for one course of leno weave alternately onto different lateral sides of each ground warp controlled by a guide needle once in every pick by means of sliding contact of their slat edges with the leno warp, thereby forming stout leno selvages for woven cloths with simplified construction and movements of the related mechanical elements.

Abstract: A selvage forming system of a shuttleless loom, comprising two binding devices for respectively binding both sides of a fabric to form selvage structures, the two binding devices being located to cause all of the binding yarns to twist in the same direction during weaving operation, thereby preventing either one of selvage structures from being easily broken.

Abstract: An apparatus for forming leno selvedges in weaving machines, comprising a stationary sun wheel and two diametrically arranged planet wheels connected therewith and rotatable about their own axis in an opposite direction to their direction of rotation about the axis of the sun wheel. The transmission ratio between the sun wheel and the planet wheels amounts to 2:1. There are provided bobbin holders for thread bobbins. Thread guide eyelets are arranged on the planet wheels eccentrically with respect to the axes of the planet wheels. These thread guide eyelets, when at their greatest spacing from one another, are situated in a plane extending through the central axis of the planet wheels. The bobbin holders are fixedly arranged on a part which supports the planet wheels.

Abstract: A method and apparatus for producing a fabric selvedge in which two pairs of selvedge threads are looped into one another.

Abstract: The present invention provides a selvage-forming device for use in a weaving apparatus, which selvage-forming device is of a relatively simple construction and yet effectively forms the selvage. The device comprises a rotatable plate upon which is mounted first and second supplies of thread. The thread from each supply of the same is preferably fed to a pre-guide member, through a guide means at the extremity of a tensioning arm, and through an aperture in the rotatable plate. The rotatable motion of the plate will cause the selvage threads to form the desired selvage.

Abstract: In a weaving loom including a selvage yarn feeding device usually including a pair of yarn feeding units mounted on and driven by a planetary gear mechanism and each having a yarn guide area in which a selvage yarn being passed therethrough is scraped against various edge portions and thus tend to produce fibrous flues, an apparatus for removing such flues from the yarn guide area of each yarn feeding unit, comprising air-flow inducing means such as flue blow-off means or flue collecting means or a combination of both and valve means which is actuated in cycles synchronized with weaving cycles of the loom so that compressed air is discharged from the flue blow-off means into the yarn guide area and/or suction is developed in the yarn guide area by the flue collecting means whereby the flues deposited in the yarn guide area are splashed therefrom and, if the flue collecting means.

Abstract: In a weaving machine an arrangement for producing selvages in woven fabrics. The arrangement includes a frame which is mounted between the healds and the woven fabric. A plurality of guide needles are pivotally mounted in the frame and are controlled by electromagnets mounted on the frame. The guide needles have eyes through which selvage threads fed from spools are passed. Each guide needle is adapted to independently guide a selvage thread during the weaving process.

Abstract: An improved arrangement of leno discs on axially opposite sides of the main fabric beat-up discs of a rotary reed is described. Three leno discs are provided in each set, with the channel between the innermost and intermediate ones of the discs in each leno set being established by an adjustable spacer to form the required warp-free zone between spaced bundles of the leno warp threads guided by the leno discs. The innermost disc of each set is identical in construction with the outermost disc, with the intermediate one of the discs differing from the other two only by exhibiting a peripheral warp-confining chamfer which is complementary to that of the other two discs. The chamfer of the intermediate disc is disposed on the reed shaft in axially opposed relation to the chamfer of the innermost disc.

Abstract: A loom having harnesses carrying an array of warp yarns defining a warp direction and displaceable in a shed direction transverse to this warp direction to form a main shed adapted to receive a weft passed through the shed in a weft direction transverse to the warp and shed directions has a leno selvage device. This device comprises at least one ground heddle at an edge of the array of warp yarns which carries a ground warp yarn. There is also provided a doup heddle at this edge which carries a doup warp yarn. One of these heddles is displaced synchronously toward the other heddle with the harnesses of the loom to form an edge shed in line with the main shed. A support is provided which defines a rocking axis nondisplaceable in the weft direction and a rocker is pivotal on the support about this axis between a pair of end positions. The doup heddle is operatively engageable with this rocker and can be deflected thereby in the weft direction to either side of the ground heddle.

Abstract: The selvage forming device comprises a frame adapted to be connected to a heald of a loom and to guide at least one warp thread. Two superimposed members are rockably mounted in the frame, and an actuating arm is secured to one member for rocking said member, the members being hinged together so that rocking of one member causes the other member to rock in the opposite sense. Each member carries one of a cooperating pair of needles for guiding binding threads, the rocking motion of the members being such as to cause scissors motion of the pair of needles in a plane transverse to the wrap threads. The frame is provided with a plurality of vertical wires under tension for guiding the warp threads.

Abstract: Device for compensating the length of binding threads in a rotary entangling device used for reinforcing the fabric selvedge by twisted leno, particularly for an entangling device of the type in which the bobbins with the binding threads are spaced apart from the twisting disc and which serve only for forming a shed of binding threads. The rotation of the twisting disc is synchronized with that of the device on which said bobbins are mounted. The twisting disc has two guiding channels therein in the form of slots arranged symmetrically to the axis of rotation of the twisting disc and situated in the circumference of a circle the diameter of which substantially corresponds to the magnitude of the warp thread shed at a given distance of the twisting disc from the binding point.

Abstract: A crossing warp mechanism is actuated by a cam shaft of a loom through a pulley and belt arrangement. A rod carrying a plurality of needles for forming the center selvedge in a fabric is subject both to reciprocating movement by the pivoting of a grooved plate which is pivoted in response to a rotating shaft, and to oscillating movement by engagement of a tooth on a sleeve surrounding the rod with a helically-grooved member rotated by the same shaft via a pinion gear.

Abstract: An apparatus for forming a leno selvage along the edge of fabric being woven on a loom having a pair of rod members carried in and for movement with adjacent harnesses. A pair of support blocks are mounted in spaced relation and for sliding movement on the rod members with one having a selvage thread guide fixed thereto and the other having a selvage thread guide mounted for pivotal movement. Movement of the harnesses effects sliding movement of the support blocks with the selvage thread guides carried thereby forming shed openings for receiving weft yarn. The combination of a fixed and pivotable selvage thread guide alternately cross lays their selvage threads so as to lock each pick of weft between the crossed selvage threads.

Abstract: A leno selvage device and method of forming a leno selvage for a loom wherein a pair of leno threads extend from supply packages through a pair of thread guides to the selvage. The thread guides are rotated around a horizontal axis which lies substantially between and intermediate the guides so that the guides will alternately occupy upper and lower shed positions and are caused to dwell in the upper and lower shed positions. The device includes a stationary cam surface which curcumscribes said axis and a lever for each guide which is attached to the guide at one end and to a cam follower at its other end for engagement with the cam surface.

Abstract: The means for forming a fabric border is constructed with a cover to cover over the opening in the housing through which the operating element projects. The cover is formed by flange projections on the drive means for moving the operating element or by a separate sleeve-like part having a flanged appendage on the operating element. The cover is intended to prevent dust and lint from entering the housing.