Abstract: A ribbon needle weaving loom including an electromechanic actuator for driving the weft thread insertion needle. A control device is provided and the actuator is configured—in co-operation with the control unit—in such manner as to allow preselection of the end position of the weft thread insertion needle at weft-insertion and of the position with retracted weft-insertion needle, and/or the starting time point of the motion of the weft-insertion needle and/or—the instantaneous speed of the motion of the weft-insertion needle, at least within a certain range. The electromechanic actuator is configured as rotary actuator or a linear actuator.

Abstract: A method of weaving a spiral-shaped textile includes inserting in the vicinity of the fell of the textile a finger adjacent to a first intermediate warp fiber between a first edge and a second edge; forming a loop around the finger with the weft fiber; wrapping weft fiber around the first intermediate warp fiber between the first edge and the second edge of the textile to secure the weft fiber in a radial direction between the first edge and the second edge of the textile; extending the weft fiber to the first edge of the textile; securing the weft fiber using a knitting system on the first edge of the textile; and removing the finger from the textile.

Abstract: A method of weaving a spiral-shaped textile includes inserting in the vicinity of the fell of the textile a finger adjacent to a first intermediate warp fiber between a first edge and a second edge; forming a loop around the finger with the weft fiber; wrapping weft fiber around the first intermediate warp fiber between the first edge and the second edge of the textile to secure the weft fiber in a radial direction between the first edge and the second edge of the textile; extending the weft fiber to the first edge of the textile; securing the weft fiber using a knitting system on the first edge of the textile; and removing the finger from the textile.

Abstract: A seat belt webbing has a plurality of warp threads (1, 3), a weft thread (2) which runs from one edge of the seat belt webbing to the other edge, periodically reversing the direction in reversal points and is interwoven with the warp threads (1, 3).The weft thread (2) in the reversal points in an edge portion (B) is folded back forming a loop, and a catch thread (5) which is fed through the loops of the weft thread (2).The catch thread (5) is placed between the warp threads (1, 3) and is covered by the weft thread (2) and/or by the warp threads (1, 3) towards the surface of the seat belt webbing.

Abstract: A single-web loom for loop velvet fabric comprises means for inserting weft yarns (2) in a shed (F1) formed by warp yarns. It further comprises individually controlled electric actuators (6), each suitable for bringing at least one warp yarn guide heddle into one of at least four positions (N1, N2, N3, N4) defining at least three warp yarn sheds (F1, F2, F3), and means for simultaneously inserting into each of the sheds (F2, F3) other than the shed (F1) into which the weft yarns are inserted, respective warp yarn guide rods (31, 32) for forming loops or pile.

Abstract: A woven ribbon, preferably a vehicle safety belt strap, is produced on a needle weaving loom. The weft yarns alternately picked from right and left are crocheted with the respective preceding weft already picked.

Abstract: Belts and methods of their manufacturing are provided. In one aspect, belts are manufactured by the steps of weaving the belt from a plurality of warp yarns and at least one weft yarn, the belt having a central region and two opposed edges. The warp yarns in the central region have a predetermined shrinkage characteristic. The belts also have at least one edge region between the central region and an edge of the belt has a predetermined number of warp yarns, each having a lesser shrinkage characteristic than the warp yarns of the central region. The method further includes the steps of passing the weft yarn across the warp yarns to effect a weaving in the central region of the belt. Further in the edge region, looping the weft yarn, on each pass, around a selected warp yarn, so that on a plurality of successive passes the weft yarn is looped around each of the warp yarns in the edge region. Subsequently, the yarns in the belt are shrunk.

Abstract: The invention relates to a narrow fabric needle loom, comprising a shedding device forming a shed, and a weft insertion needle (12) for at least one weft loop (14). A knitting needle (26) is provided on the discharge end (20) of the shed facing away from the feed end (18) of the weft insertion needle (12) and secures the weft loops (14) by meshing (22). A second knitting needle (36) that meshes (30) the loops is provided on the feed end (18) of the weft insertion needle (12). The knitting needles for the feed end (18) and the discharge end (20) are mounted so that they can be swiveled about the same rotational axis (47).

Abstract: In a mechanical loom, a weft insertion needle (28) feeds a loop of weft thread (30) into a shed (26). On the opposite side of the shed is a knitting needle (32) which ties the loop of weft thread (30). The weft insertion needle (28) and the knitting needle (32) are disposed such that the side (56) of the loop of weft thread (56) to be caught by the knitting needle (32) lies below or, at the highest, at the same level as the head (62) of the knitting needle (32). The head (62) of the knitting needle (32) is associated, in the position in which it catches the thread, with a guide plate (52) with a guide cam (54, 72) such that the side (56) of the loop of weft thread to be caught is passed over the head (62) of the knitting needle and into the hook (64) of the knitting needle when the weft insertion needle (28) is run out of the shed. In order to improve the weaving operation and the woven product, the guide plate (52) is located on the side of the knitting needle (32) facing away from (26).

Abstract: A process for producing a safety belt for use in a motor vehicle comprises the insertion of two yarns into a least one shed. Two weft yarns are inserted over the entire width of the fabric, with one inserted on one side of the fabric and the other on the other side of the fabric at the same time. In addition, a third weft yarn binds over a part of the fabric with warp yarns.

Abstract: An elongate webbing has opposed longitudinal edges formed from warp and fill yarns interwoven together, and a catch cord for interconnecting the fill yarns adjacent one of the longitudinal edges. The catch cord is fabricated from a yarn having a component with a melting point lower than the warp and fill yarns for bonding of the catch cord with the warp and fill yarns when being subjected to a melting temperature sufficient to melt the catch cord but not the warp and fill yarns. More specifically, the catch cord is fabricated from a bicomponent yarn having a plurality of individual filaments, each filament having a core and an outer sheath. The melting point of the sheath of each filament is lower than that of its core. The core of each filament is preferably fabricated from polyester having a melting point at about 489.degree. F.

Abstract: In a loom, a carrier drive shaft supporting the carrier at one end horizontally, is vertically mounted on the loom frame, and the carrier drive shaft and a reed drive shaft are linked by a link via a pivotal member. With this arrangement, the carrier drive shaft will not undergo at least vertical vibration so that influence due to vibration of the reed during the inserting of the weft yarn can be reduced to a minimum, thus sharply minimizing chances that the latch needle fails to catch the weft yarn.

Abstract: Weaving belt material on a needle belt material loom with oppositely operating weft needles by insertion into a common shed. The heads of the oppositely inserted weft loops are secured by two rows of stitches arranged at the outer border of the belt material.

Abstract: A hollow fiber bundle in which the hollow fibers are in the form of warp threads of woven hollow fiber tapes. The plurality of hollow fibers are held together by a low density, double weft thread. The hollow fiber bundles may form an angle with the lengthwise axis of the bundle such that adjacent woven hollow fiber tapes form an angle of intersection with one another or alternatively, the hollow fiber tapes may be made into partial bundles and the partial bundles assembled together so that the hollow fibers are arranged essentially parallel to one another and the lengthwise axis of the bundle. In both cases, the presence of weft threads ensures that the hollow fibers will not slide into the spaces between adjacent hollow fibers.

Abstract: A weft sensing system for a weaving machine such as an air jet loom or a water jet loom includes an image sensor camera for scanning at least a line passing through a weft insertion path to detect an abnormal weft insertion. The image sensor camera is set to perform one or more scans in each pick, and connected with an image processor which monitors the size or position of an image of a weft yarn. Preferably, the image sensor camera is positioned on the front side of the reed.

Abstract: A method and device for producing woven hollow fiber tape, for use in exchange devices such as blood oxygenators and heat exchangers, having weft threads and hollow fibers as warp threads, formed as a double weft tape. The device feeding a plurality of parallel hollow fibers as warp threads in a first direction, dividing alternating adjacent hollow fibers to create two sets of hollow fibers, separating one set of the hollow fibers from the second set to create a gap therebetween, inserting a double weft thread into the gap and knitting the double weft thread at a side of the plurality of parallel hollow fibers away from that side where the double weft thread is initially inserted. The hollow fibers are separated into the two sets by a reciprocating shedding device thereby creating the gap for insertion of the weft threads.

Abstract: A woven hollow tape, for use in exchange devices such as blood oxygenators and heat exchangers, having weft threads and hollow fibers as warp threads, formed as a double weft tape, in which one tape edge is formed as a knitted edge and the weft density is much less than that found in normal woven textile tapes, each weft being spaced apart from the adjacent wefts. The tape is produced by a weft insertion that takes place in a manner similar to that of a shuttleless ribbon loom, especially a needle ribbon loom, preferably using freshly spun hollow fibers. The resultant tape may have hollow fibers along both edges and may be used to form the appropriate products either with or without the weft threads which are easily removed as a result of the tape structure.

Abstract: A knitted selvage is formed along an otherwise woven ribbon by tying off loops of filling thread inserted into successive sheds of warp threads. A primary selvage thread is drawn through each loop of filling thread along with only one of two auxiliary selvage threads, the auxiliary selvage threads being drawn alternately through successive loops with the primary selvage thread.

Abstract: The invention concerns woven straps having transverse contractions, as well as a method and apparatus for their manufacture. Contractions are formed along straps having a continuous unchanging weave and continuous selvedge by altering spacing of warp yarns during weaving. The warp yarns are spaced by a V or fan shaped support which is vertically movable to cause corresponding width variations in the straps.

Abstract: An automatic narrow-fabric needle loom weaving system employing a hook secured to the mounting plate of the loom on the side thereof into which the needle enters the shed and around which the weft thread is wound in order to form a straight edge without contraction of the warp threads during beat-up on the side of the woven material opposite the knitted selvage edge produced by a latching needle pick. An improved weft thread feed is provided with a simple, relatively inexpensive mechanical drive disk that can be easily adjusted to vary the amount of weft thread fed during each pick. A weft thread support spring structure provides tensioning support for the weft thread and reduces wear on the leaf spring members. An improved header frame assembly prevents undesired twisting of the header elements and makes it easier for a technician to change the machine over from one weaving pattern to the next. Eccentrically mounted drive disks are provided for the respective sets of oppositely reciprocated header frames.

Abstract: A shuttleless loom for weaving a fabric comprises a weft inserting device for inserting a pair of successive loops of weft yarns simultaneously through respective superimposed warp sheds from one side thereof, and a selvedge-forming device arranged along the other side of the warp sheds for forming a knitting selvedge at one edge of the fabric being woven. The weft inserting device reciprocates along a first arcuate path in a first plane extending substantially parallel to the fabric. The selvedge-forming device reciprocates along a second arcuate path in a second plane extending substantially perpendicularly to the first plane so as to pass through a single loop of one of the weft yarns and catch the other weft yarn projecting out of the warp sheds.

Abstract: A selvage-knitting needle for use in a shuttleless loom is attached at an angle to a support bar which is angularly movable by rocker means to enable an intersection of the axes of the needle and support bar to substantially follow an arc of a circle. A pivot means allows the support bar to move longitudinally substantially through a point on the circle while the support bar is being angularly moved, so that the selvage-knitting needle can reciprocate through a fixed point adjacent to the fell of a tape being woven for knitting a tight selvage.

Abstract: A ribbon loom has a reed drive, a weft-needle drive, an operating needle drive and a shed-forming drive. A main drive shaft carries discs and/or cam discs to which the first-mentioned three drives are directly and articulately coupled. An auxiliary drive shaft extends transverse to the main drive shaft and is connected to the shed-forming drive; it is coupled to the main shaft via a worm transmission the transmission ratio of which can be varied by replacing the worm wheel with a differently dimensioned one.

Abstract: Disclosed herein are a method for weaving webs, such as tapes of slide fasteners and a loom used for achieving the method. The method comprises a process of urging a woven web so as to shift the path of the web to a place close to a latch needle of a loom so that loops of a filling formed between the latch needle and the adjacent edge of the web are small. The loom includes a ramp on a table on which a woven web is fed. The direction of the inclination of the ramp is perpendicular to the feeding direction of the web and it descends as it goes toward the latch needle.

Abstract: A mechanism for driving a beat-up reed and a selvedged forming needle in timed relation in a needle loom is disclosed. The mechanism comprises a pair of parallel spaced first and second rock shafts to which a reed carrier arm and a selvedge forming needle carrier arm are respectively attached. Only one of the first and second rock shafts is driven by a drive means to oscillate through a predetermined angle. There is a linkage connecting the first and second rock shafts for transmitting such oscillatory motion of one of the first and second rock shafts to the other. The linkage includes a pair of levers angularly adjustably connected to the first and second rock shafts, respectively, and a link connected at opposite ends to respective free ends of the levers.

Abstract: A slide-fastener stringer is formed by weaving a weft in a warp and simultaneously forming a continuous coupling element along each of the confronting edges of a pair of tapes simultaneously produced by the weaving operation. The synthetic-resin monofilament forming the coupling element is passed around a mandrel between the warp stretches so that the heads of the two coupling elements are produced in interdigitated form. The ground weft yarn is carried from the coupling element side of each set of warps through the shed to the opposite edge of the tape where it is locked into other loops of previous passes of weft by knitting.

Abstract: A method and apparatus for weaving a continuous fabric having parallel selvedges, including a doubleheaded needle being passed from one side of the shed to the other transversely, forming a weft double pick alternately from one side and the other. The apparatus includes an oscillating shaft moving a pair of arms supporting gripper means adapted to grip the needle on either side of the shed as the needle is being passed through the shed.

Abstract: A shuttleless weaving machine, especially a ribbon loom, comprising at least one filling thread-insertion element and at least one to-and-fro driven knitting needle moving along the selvage or cloth edge which is situated opposite the filling thread-insertion element for the formation of a knitted edge by tying the inserted filling threads and/or auxiliary threads. There is further provided a deflection element operatively associated with the knitting needle for the introduction of filling threads or auxiliary threads, respectively, into the knitting region or zone of a hook of the knitting needle. The deflection element is driven so as to move back-and-forth and by means of an actuation element driven in cycle with the machine can be brought, transversely to its direction of movement, from a rest position into a knitting position where the deflection element deflects filling thread or auxiliary thread, respectively, to the knitting region of the knitting needle hook.

Abstract: A Shuttleless Narrow Fabric Loom is provided with a weft inserting means, to insert filling in the warp sheds, there being two weft threads for each insertion. In order to retain the inserted weft threads in the shed and to form a proper selvage, a knitting needle is provided on the opposite side from the inserting means to engage the inserting member to acquire the weft as the inserting member is withdrawn. The needle which has caught the weft retracts in the direction of the warp flow until it casts off the weft previously acquired. During the knitting cycle, the weft is engaged next to the selvage adjacent the knitting needle to draw a measured loop of weft.

Abstract: A needle loom for producing a decorative selvedge at the knitted edge of a fabric during weaving comprising a weft inserter for inserting loops of weft into a warp shed from one side, a knitting needle for securing the weft loops and movable weft loop engaging means for engaging selected weft loops and causing said selected weft loops to extend beyond the knitted edge of the fabric and forming a decorative edge.The invention also includes a method producing a decorative selvedge on the aforesaid loom.

Abstract: A driving mechanism for selvage forming knitting needles in shuttleless looms is a linkage comprising a pair of upper and lower horizontal links and a pair of front and rear vertical links, these links being pivotally joined togehter to provide a substantially parallelogramatic construction. A first link extension extends from the lower link and is pivotally coupled to a machine frame. A second link extension extends from the upper link and has mounted thereon a knitting needle which is provided with a hook and a shank and is located alongside of the fabric. A disk crank has a crank pin rotatably connected to the rear link and is coupled with a drive shaft of the shuttleless loom.

Abstract: A selvedge-forming device in shuttleless weaving looms, wherein two selvedge-forming needles are mounted for radial movement about a needle-carrying pivot arranged transversally to the warp threads and rotatably mounted in a selvedge-forming head that is slidably guided by the side of the warp threads, and is so reciprocated as to be driven forward, in the direction of the weft inserters path, and backwards, synchronously with the movement of the two weft inserters, means being provided positively controlled by the weft thread inserting needles which allow the selvedge needles to pivot back to their original position at the end of the forward run of the selvedge forming head.

Abstract: Means are provided for entraining the free ends of weft threads extending from a formed fabric in movable suction hoses at each side of the loom. The hoses manipulate the weft thread ends into a position adjacent the sheds where hooked needles engage and fold the ends into the shed prior to beating. The weft threads on the side of the fabric which are attached to bobbins are folded into the sheds according to the pick repeat of the loom and the threads on the opposite side are folded into the next shed.