Abstract: A seam structure for a drying wire, produced by reducing the thickness of the end portion of the drying wire and folding the end portion double and stitching the double wire portion to hold it together; and a method for producing the seam structure. At least part of the stitch (6; 6a, 6b) is sewn in parallel with warp threads (2) in the direction of travel of the drying wire between the warp threads (2) so that it will be positioned below the contact surfaces of the warp threads, the stitch end close to the seam being sewn double over a distance and the stitch end remote from the seam is bonded to the wire side facing away from the web by silicone (7) or some other suitable glue-like material.

Abstract: An adjustable harness guide for the Jacquard machine of a seam-weaving machine in which the harness cords are drawn back by tension springs which are secured in a grille. The harness cords are guided through a harness board and the weaving shed is located between the grille and the harness board. The grille and the harness board are adjustable in their angle position relative to the course of the harness cords. The grille and the harness board are connected by a rod linkage system so that they move synchronously. The grille and the harness board are each formed of two halves connected to each other by a hinge with the axis of the hinge running parallel to the warp threads of the seam-weaving shed.

Abstract: An endless papermakers belt which is formed from a length of woven fabrics having its ends joined together to form the endless belt. The fabric has joining loops at each end of the fabric which are formed entirely from and are a linear continuation of the original woven fabric.

Abstract: A shedding device and a method for joining the ends of a fabric into an endless belt of fabric, or, alternatively, joining the ends of separate pieces of fabric into a single piece of fabric. The shedding device employs a plurality of heddles supported at only one end, allowing the heddles to be individually moved or adjusted. The heddles are connected to the top ends of piston rods of a plurality of pneumatic cylinders. The heddles move up and down to shift threads passing through the heddles, so as to form a shed. The shedding method employs an interweaving piece of fabric, with a portion of the interweaving piece having only weft threads. The weft thread of the interweaving piece interwoven with the warp threads of the ends of the fabric to be joined. Alternatively, the weft threads of the interweaving piece can be interwoven with the weft threads of the ends of the fabric to be joined.

Abstract: A draw-through gripper for the gripping and insertion of an auxiliary weft thread into a seam-weaving shed in a seam-weaving machine includes a movable gripper arm with a gripping collet for grasping the auxiliary weft thread. An apparatus for measuring the mechanical stress occurring inside the gripper arm is mounted on the gripper arm. The apparatus for measuring the mechanical stress occurring within the gripper arm can be a strain gauge.

Abstract: A shed formation apparatus having increased flexibility and speed. The shed formation apparatus is comprised of a plurality of movable heddles which are connected to a plurality of heddle selectors by a first plurality of control leads. The heddle selectors are movably connected to a plurality of heddle selector controllers which include stoppers to retard the movement of the heddle selectors. A second plurality of control leads are attached to the heddle selectors. A repeat pattern output apparatus determines the movement of the second plurality of control leads and the attached heddle selectors, and selectively activates the stoppers.

Abstract: A wire-link, such as a filament-link belt for process purposes, in particular one serving as a clothing for paper-making machines, with a plurality of juxtaposed, mutually engaging wire-coils comprising end-arcs enclosing plug-in wires and turn-legs connecting the arcs, is characterized in that the turn-legs of at least a part of the wire-coils alternate each time between two end-arcs at least once between the flat sides of the wire-link belt.

Abstract: A flat woven pin-seamed papermakers fabric wherein machine direction yarns define a series of orthogonal seaming loops on the opposing fabric ends. The fabric comprises a system of flat monofilament machine direction warp yarns (hereinafter MD yarns) which are woven in a selected weave construction. In a preferred embodiment, the system of MD yarns comprises upper and lower yarns which are vertically stacked. End segments of the lower MD yarns are removed and the upper MD yarn ends are looped back upon themselves and rewoven into the fabric end in the space vacated by the trimmed lower MD yarn end segments. Non-loop forming upper MD yarns are also preferably backwoven into the space vacated by trimming the respective lower MD yarns. Preferably, at least the upper MD yarns are woven contiguous with each other to lock in the machine direction alignment of the stacking pairs of MD yarns and the orthogonal orientation of the end loops.

Abstract: A papermakers fabric having a stacked system of flat monofilament machine direction yarns (hereinafter MD yarns) which define the surface characteristics of the fabric. The system of MD yarns comprises upper and lower yarns which are vertically stacked. Preferably, the upper MD yarns define floats on the upper surface of the fabric and each upper MD yarn is paired in a vertically stacked orientation with a lower MD yarn. The upper MD yarns may be comprised of one type of material, such as nylon 6, 6 to define a hydrolysis resistance paper carrying surface with the lower MD yarns, which define the machine side surface, being made of a polyester (PET) yarns, which are lower in cost and are less hydrolysis resistant. Cross machine direction yarns (hereinafter CMD yarns) may be a third type of yarn, for example a relatively inert material such as Ryton.TM.. The CMD yarns are protected from abrasive wear by the upper and lower MD yarns.

Abstract: A needled press felt for dewatering of cellulose pulp in a paper making machine consists of a multi layer base fabric having longitudinal and transversal threads. In order to improve the dewatering capability of the press felt and making it easy to assemble, the dewatering side of the press felt consists of layer of coarse yarn (3), which has a weight per unit of length, which is at least twice as great as the one of the remaining parallel yarns (1, 2) of the base fabric. Further a seam which can be opened is arranged transversally to the running direction of the felt in the paper making machine.

Abstract: A papermaking fabric formed of warp and weft yarns woven endless in a multi-layer uneven weave pattern and heat set to produce set floats in the warp yarns of one length which appear on one surface of the fabric and floats of a different length which appear on a second surface of the fabric. A low profile seam for joining opposite ends of the fabric to form an endless papermaking fabric. The seam is formed by turning warp yarns back and reweaving them lengthwisse into each of the ends with weft yarns in such a manner as to present appropriate ones of the floats on appropriate fabric surfaces. At the same time, loops are formed along the ends in spaced manner. The weft adjacent the end comprise undersized yarns which are woven with the warp yarns to provide longitudinal space along the warp yarns and between the undersized weft yarns. This allows the formation of small loops at the ends by crowding the small weft yarns.

Abstract: A shed formation apparatus which has increased flexibility and speed and finds particular application in automated reweaving of the ends of a fabric. The apparatus is generally comprised of a plurality of heddles which will control yarn movement during the shed formation. Each of the heddles has a yarn mail and at least one control lead. Each control lead is under the influence of a controller - stopper mechanism which controls heddle movement and position. The actuation of the stopping mechanism is controlled by a shed formation repeat pattern output device which determines the position of the heddle and the selection of the stopping mechanism in accordance with the repeat pattern.

Abstract: A papermaking machine belt comprising a flexible belt-layer impermeable to liquids which is partly integrated with a support track with cavities.

Abstract: The present invention provides a belt for papermaking machines, said belt comprising a flexible belt layer impermeable to liquids and is smooth on its backside while its front side integrates, but only partly, a support-track having cavities and it contains longitudinal threads extending in the direction of advance and located between the support track and the backside of the belt.

Abstract: A seam for a papermakers wet press felt having a flat woven base fabric with the crimped yarns oriented in a lengthwise or machine direction. Orientation of the crimp in the machine direction lends itself to an analysis of the crimps per square inch based upon the crimp length and warp end count. Utilizing the crimps per square inch figure, it is possible to establish the approximate minimum length of the join in the machine direction. The machine direction length, in inches, of the join area is approximated by the equation: approximate joined length equals 500 divided by the crimps per square inch in the repeat pattern of the woven base fabric.

Abstract: A woven pin-seamed papermakers faric wherein machine direction yarns define a series of orthogonal seaming loops on the opposing fabric ends. The fabric comprises a system of flat monofilament machine direction yarns (hereinafter MD yarns) which are woven in a selected weave construction. In a preferred embodiment, the system of MD yarns comprises upper and lower yarns which are vertically stacked. End segments of the lower MD yarns are removed and the upper MD yarn ends are looped back upon themselves and rewoven into the fabric end in the space vacated by the trimmed lower MD yarn end segments. Non-looping forming upper MD yarns are also preferably backwoven into the space vacated by trimming the respective lower MD yarns. Preferably, at least the upper MD yarns are woven contiguous with each other to lock in the machine direction alignment of the stacking pairs of MD yarns and the orthogonal orientation of the end loops.

Abstract: An improved papermakers' press felt and a method to make such an improved press felt, for use in papermaking, cellulose and similar machines, including a base fabric assembly joined without seaming. In one embodiment, the ends of the base fabric are joined to create an endless fabric by a needling operation that also entangles the batt into the base fabric. The ends to be joined to the flat-woven base fabric are preferably cut on a diagonal. To produce this fabric, a flat-woven base fabric is cut to the proper dimensions for a press felt and rolled into two continuous loops, one inside the other, to form the base fabric assembly. Alternatively, two flat-woven base fabrics of the appropriate size for a press felt are used. Each fabric is rolled once to form a loop and the two loops are assembled, one within the other, to form the base fabric assembly.

Abstract: A woven pin-seamed papermakers fabric wherein machine direction yarns define a series of orthogonal seaming loops on the opposing fabric ends. The fabric comprises a system of flat monofilament machine direction yarns (hereinafter MD yarns) which are woven in a selected weave construction. In a preferred embodiment, the system of MD yarns comprises upper and lower yarns which are vertically stacked. End segments of the lower MD yarns are removed and the upper MD yarn ends are looped back upon themselves and rewoven into the fabric end in the space vacated by the trimmed lower MD yarn end segments. Non-loop forming upper MD yarns are also preferably backwoven into the space vacated by trimming the respective lower MD yarns. Preferably, at least the upper MD yarns are woven contiguous with each other to lock in the machine direction alignment of the stacking pairs of MD yarns and the orthogonal orientation of the end loops.

Abstract: A dewatering fabric for the press section of a paper machine having improved dewatering capabilities. The fabric is constructed to provide long exposed floats of flattened monofilaments on the paper side of the fabric, at a high fill factor. The fabric may be used alone, with a paper side batt, or with a batt on each side.

Abstract: A pin-seamable papermaker's fabric, designed for use on the press section of a papermachine, is woven from systems of yarns which align in the machine and cross-machine directions of the papermachine when the fabric is operating thereon. The machine-direction yarns have a composite structure, including braided monofilament strands as the load-bearing components of the fabric. The fabric is produced in open-ended form, and has loops at each end formed by the machine-direction yarns. It is made endless during installation on the papermachine by bringing the two ends together, by interdigitating the loops of the two ends, and by directing a pin, or pintle, through the passage formed by the interdigitated loops. The loops themselves, being formed by the machine-direction yarns, likewise include braided monofilament strands.

Abstract: The invention is directed to a method of manufacturing an insertion-type seam for making a cloth belt, especially a wire cloth, endless, in which the warp ends of each cloth side are interwoven with an auxiliary warp strip, and to a seaming machine for carrying out the method.

Abstract: A dress fabric comprising a plurality of layers of machine direction and cross-machine direction yarns, respectively, the yarns for each layer oriented in parallel with respect to each other and perpendicular with respect to the yarns of immediately adjacent layers, the yarns of one layer not binding the yarns of adjacent layers, and separate binder yarns for binding said layers. The fabric defines two machine direction oriented edges and two cross-machine direction oriented edges, whereby at each cross-machine direction oriented edge certain machine direction yarns extend from one layer a distance sufficient to form a loop and then return to the same cross-machine direction oriented edge into another layer of machine direction yarns.

Abstract: A pin seam construction in which cross direction yarns in the area proximal the seam have a cross sectional size greater than the size of the cross direction yarns appearing in the body of the fabric to provide a weave portion of greater thickness proximal the pin seam to protect the seam in use.

Abstract: A pin-seam type of wet papermaker's felt of the kind in which the seam includes a series of interfitted and transversely aligned pin-receiving loops, and in which alternate loops are associated with either one or the other of the felt ends. At least one of the series of loops is provided with a surface impression in the form of a distinctive color, which color is distinguished or different from the color of the loops associated with the other end of the felt so that when the loops are properly aligned, an alternating visual pattern is presented to indicate such proper alignment and to facilitate the threading of the pin therethrough.

Abstract: Forming fabrics are made in multilayer construction, with a hydrophobic top layer and a hydrophilic base layer or layers. The fabric is advantageous in a forming wire, obviating rewet in a forming paper sheet.

Abstract: A seam for joining the ends of a fabric to form an endless belt which can be used for papermaking, is created by attaching a continuous coil to each fabric end, the loops of the coils being preformed so that when the loops are intermeshed each loop of one coil engages or creates an interference fit, with two loops of the opposite coil. To strengthen the seam, a pin is inserted in the tube formed by the intermeshed loops.The loops are joined by using a tool which has two channels through which the ends are brought together. The channels are formed between two plates attached to the ends of scissor arms.