Abstract: While feeding an upholstery member, a sewing needle is reciprocated to form needle receiving holes, and an upper thread is passed through each needle receiving hole, caused to cross a lower thread, and pulled out of the needle receiving hole. The sewing cycle is repeatedly performed to form a stitch, so that stitches form a stitch line in a surface sheet. A direction of a force, which is generated by applying tension to the lower thread and which acts to rotate thread ends of a pair of adjacent stitches in each needle receiving hole about a crossing part of the upper thread and the lower thread, is defined as a rotation direction. The sewing needle is rotated in a direction opposite to the rotation direction to incline a diagonal line of the quadrangular shape forming the cross section relative to the feeding direction of the upholstery member.

Abstract: A method for preventing seam ravel of multi-thread chain stitches is provided. After normal sewing is terminated with a looper set in a forward movement state, a state in which a needle thread loop caught by the looper is subjected to position-holding at a position closer to a forward movement end of the looper than a descent position of a needle is maintained until the needle descends through the needle thread loop caught by the looper. Thereafter, the position-holding of the needle thread loop is released to permit a sewing action for at least one stitch, thereby allowing the needle thread loop to be self-looped with a needle thread held by the needle. This surely strongly prevents the seam ravel of multi-thread chain stitches formed by the single needle, irrespective of the dimension of tension applied to the needle thread and the looper thread.

Abstract: The invention provides a stitchbonded nonwoven fabric comprising a nonwoven web, stitches of a first yarn, and stitches of a second yarn wherein the first yarn comprises polyester bicomponent fibers exhibiting latent crimp and comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate). The invention further provides a process for making such stitch-bonded nonwoven fabric.

Abstract: To provide a seam of attractive appearance in which tightening force is increased and raveling are prevented drastically. A seam (1) is formed by two needles (11, 12) juxtaposed in the direction at substantially right angles to the sewing direction (T), and consists of a chain seam (10) formed by a needle thread (12) passed through one needle (11), and a lock seam (20) formed by a needle thread (22) passed through the other needle (21). The loop (13) of a needle thread forming the chain seam (10) is passed through the loop (23) of a needle thread forming the lock seam (20) before tightening of stitch is performed, and a loop of the needle thread forming the chain seam located on a downstream side in the sewing direction is passed through the loop of the needle thread forming the upstream chain seam.

Abstract: A sheet package body P has a first package body 1 and a second package body 2. The first package body 1 is disposed on the second package body 2 by overlapping in part, said overlapped portion L is set in a double chain stitch sewing machine and is sewn. A stitching D of chain stitch is formed said portion L. By pulling the sewing end portion 4a of the looper thread 4 forming the stitching D of chain stitch, the stitching D of chain stitch gradually unravels from the sewing end portion, and the both package bodies 1, 2 are separated from each other.

Abstract: Disclosed herein is a composite comprising at least one heat shrinkable adhesive layer stitch-bonded with yarns, which shrink less than the adhesive layer or do not shrink, when the adhesive layer is exposed to heat. The stitch-bonded yarns form loops upstanding from the shrunk adhesive layer and the loops create a textured surface on the composite, and the composite is substantially inelastic after the adhesive layer is shrunk. The composite may further comprise at least one fibrous layer stitch-bonded to the shrinkable adhesive layer, and the fibrous layer is less shrinkable than the adhesive layer or is substantially non-shrinkable.

Abstract: A method of forming a stitch and the stitch which includes three needle threads and cooperating looper threads for forming three parallel rows of stitches that are joined by a spreader thread that lies on the upper surface of the work piece. The spreader thread follows a serpentine pattern and is configured to lie both forward of and rearward of the penetrating points of the needle threads such that it connects and covers the three parallel rows of stitches.

Abstract: A stitchbonded nonwoven fabric which comprises a fibrous layer is reinforced in a first direction with bulkable thread and in a second direction with substantially inextensible thread, the reinforcing directions being at an angle of at least 50 degrees with each other, exhibits superior strength, resistance to splitting and repeated washability.

Abstract: An automatic thread supply device for a conventional overlocking sewing machine is disclosed. Each of a needle thread, an upper looper thread and a lower looper thread is supplied to a thread supply roller but the supply is stopped for an optimum period by a thread holder, whereby the supply length of each thread is adjusted. In forming a thread chain, the total supply length of the looper threads is not more than five times of the length of the needle thread, and the smallest length of the above threads is not more than half of the total length of the remaining threads. In this way, a highly expandable thread chain is formed having a good appearance.

Abstract: A single layer non-woven fabric suitable for use as a cotton bale covering that is a single layer batt formed of cross-lapped fiber, having a structure compacted by needle tacking, and being thermally bonded by thermally set low melt thermoplastic material intermixed throughout the batt, and stitch bonded throughout the batt. A process for producing this non-woven fabric that includes forming a webb of fiber, cross-lapping the web to form a batt, needle tacking and stitch bonding the batt, and providing low melt thermoplastic material that thermally bonds the fiber in the batt upon heating.

Abstract: A wiring harness is enshrouded in a tubular length of stretchable material. The shroud holds pigtails, takeouts, connectors, harness hold-downs and the like which otherwise extend from the harness against a trunk of the harness so that it can be inserted through an opening in a firewall or other structural member of a motor vehicle or other product for installation of the harness. Once inserted through the opening, the shroud is removed, preferably by means of a closure device which initially maintains the shroud as a tubular structure but can be removed to open at least a portion of the tubular structure to facilitate shroud removal. To facilitate installation of the shroud onto a wiring harness, the shroud is initially stretched over a tubular applicator to expand the shroud.

Abstract: A cushioning material for mattresses is formed by needling a pile of crimped fibers to form a flat board, and then continuously and alternately bending the flat board to form a corrugated web. The corrugated web thus formed has a number of side-by-side contact portions and a number of bent portions connecting the side-by-side contact portions. The bent portions thus form a relatively soft surface portion of the cushioning material, and the side-by-side contact portions provide a moderately rigid portion of the cushioning material. The corrugated web may be held together by sewing, bonding or welding.

Abstract: A composite sheet material which is particularly useful as a backing material for carpet underlay is a stitched crepe paper sheet 5 with rows of apparent projections 13 formed therein between parallel rows of stitches 10 by deforming the crepe paper sheet without puncturing the paper. The stitches 10 substantially restrict the extensibility of the crepe paper sheet 5 and the apparent projections 13 are formed at a position in the crepe paper sheet 5 directly in line with the ends 11 of the stitches 10. According to the preferred method, each apparent projection 13 is in reality a depression between two projections formed in the opposite surface of the crepe paper sheet without puncturing the paper. In an alternative embodiment there is a pair of apparent projections 13 formed in the crepe paper sheet 5 between adjacent rows of stitches 10.

Abstract: An elastic quilted composite fabric is provided. The quilted fabric has at least one gathered fibrous layer and at least one elastic fabric layer. The elastic fabric layer preferably includes 1/2 to 10% by weight of spandex fibers and is a stitch-bonded fabric whose elastic characteristics are not activated until after the various layers of the composite fabric have been quilted together.

Abstract: In an overedge stitch type consisting of two needle threads, one looper thread and a workpiece carrying these threads, loops of the needle threads are arranged at different spacings parallel to the edge of the workpiece within the latter. In addition, these loops of the needle threads may also exhibit different spacing from the workpiece edge.

Abstract: A nonwoven fabric is provided which comprises a layer of nonbonded, polyethylene, plexifilamentary film-fibril strands, which layer is multi-needle stitched with a stitching thread that forms spaced-apart, parallel rows of stitches in the fabric. Stitching thread of spandex yarn which causes the fabric to contract to 35 to 70% of its original area is preferred. The nonwoven fabric is particularly suited for use as a wipe-cloth.

Abstract: Multiple hem stitches are produced for joining a plurality of superimposed fabric materials along their edges by employing a sewing machine having a pair of vertically reciprocating needles each carrying a needle thread and a pair of loopers each carrying a looper thread. The first and second needle threads extend along the fabric edge and in parallel with each other on the upper face of the fabrics and penetrate through the fabrics to form a first and second needle thread loops on the underside of the fabrics. The first needle thread loop is distended laterally to the fabric edge by the first looper. The first looper thread encompasses the first needle thread at each penetration point and extends laterally on the upper face of the fabrics to form a first looper thread loop which is caught by the descending first needle to be interlocked with the first needle thread loop along the fabric edge.

Abstract: This relates to a seam between two edge portions of fabric wherein one fabric edge portion is reversely folded beneath itself and the two edge portions are then disposed in overlapped relation with the two free edges of the fabric being generally aligned. Adjacent the folded edge there is a first line of stitching which extends through all three layers. There is also provided a second line of stitching which includes two needle threads and a single looper thread with one of the needle threads extending through all three thicknesses of the fabric and the second needle thread extending only through the one layer of fabric beyond the overlapped fabric portions. The second line of stitching includes a looper thread which not only extends between the loops of the two needle threads, but also transversely of the line of stitching between the adjacent needle thread loops wherein the looper thread serves to hold down and prevent unraveling of the free edges of the fabric.

Abstract: Three-dimensional thick fabrics are made from a laminate of fabric plies by first inserting pointed rods through the laminate to form rows of holes after which needles are reciprocated through the different holes to pull loops of various yarns through the holes. The loops of yarns in adjacent holes are interlocked to hold the plies together. A guide releasably clamped to each yarn controls tension in the yarn while a doffing point is employed to insure that the needle passes through a loop just formed when penetrating the next hole to insure interlock of the loops. Hollow circular objects are formed by winding a length of fabric a selected number of times around a form, following which the pointed rods are used to form holes in the resulting laminate with the needles and yarns being used to form the interlocking loops through the thickness of the laminate.

Abstract: The invention concerns a stitch formation and method of making it which consists of alternate chain and lock stitches formed from a single continuous thread. On the first penetration of the needle, the thread is divided into two portions, one on each side of the work piece and then subsequent penetration of the needle forms the alternate chain and lock stitches with the drawn off thread portion passing through the alternate loops to form the lock stitch.

Abstract: The invention relates to a protective cover of fibre material such as non-woven material, intended to be applied as a cover on a substructure such as those intended for sitting or lying, for example as an antimacassar for seats, there being at least one row of stitching running across the cover and made as double chain stitching with such thread structures that it forms an attachment for the hooks of a burr strip attached to the substructure. The upper thread of the double chain stitching consists of a relatively highly elastic thread of multifilament type having crimped filaments, the upper thread forming consecutive loops on the lower side of the cover in a known way, while the lower thread of the double chain stitching consists of a cotton or cotton-synthetic thread which is relatively unelastic in relation to the upper thread.

Abstract: Apparatus for producing stitch bonded fabric and having needles which penetrate a fleece and receives threads which are controlled by thread guides and also including wires which enter but do not completely penetrate the fleece whereby a loop of fibers are formed around a hook of the needle and retained thereby. The threads lock the interengaged stitch loops and means are provided to permit a thread to be passed over the hook formation of the needle to form a .[.tricot-.]. stitch seam to the fleece. .Iadd.