EP0236601B2 - Machine automatique pour la jonction de deux extrémités de bande - Google Patents

Machine automatique pour la jonction de deux extrémités de bande Download PDF

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Publication number
EP0236601B2
EP0236601B2 EP86301286A EP86301286A EP0236601B2 EP 0236601 B2 EP0236601 B2 EP 0236601B2 EP 86301286 A EP86301286 A EP 86301286A EP 86301286 A EP86301286 A EP 86301286A EP 0236601 B2 EP0236601 B2 EP 0236601B2
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EP
European Patent Office
Prior art keywords
warp thread
arm
seam
interlace
supported
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86301286A
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German (de)
English (en)
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EP0236601A1 (fr
EP0236601B1 (fr
Inventor
Malcolm Oldroyd
Dominique G. Rateau
Merlin A. Lübke
Larry D. Anderson
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Asten Inc
Original Assignee
Asten Inc
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8195899&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0236601(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to US06/770,352 priority Critical patent/US4581794A/en
Application filed by Asten Inc filed Critical Asten Inc
Priority to DE8686301286T priority patent/DE3674192D1/de
Priority to EP86301286A priority patent/EP0236601B2/fr
Priority to AT86301286T priority patent/ATE56490T1/de
Publication of EP0236601A1 publication Critical patent/EP0236601A1/fr
Application granted granted Critical
Publication of EP0236601B1 publication Critical patent/EP0236601B1/fr
Publication of EP0236601B2 publication Critical patent/EP0236601B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0054—Seams thereof

Definitions

  • the present invention relates to apparatus for use is making a woven seam in woven fabric belts, and more particularly to apparatus for forming woven seams in long fabric belts of the type employed in the paper industry in the Fourdrinier section of paper machines.
  • seam weaver It is difficult for the seam weaver to grasp the individual filaments in the proper sequence, yet it is imperative that the seam weaver produce a perfect and continuous woven product. If the filaments are not woven together in the proper order, the fabric is worthless. The seam weaver must also take great care to be sure that the woven filaments are not twisted and such that each knuckle of the seam filaments is properly oriented with respect to the other theads of the fabric.
  • EP-A-0043441 discloses apparatus for use with means for supporting a strip of weft threads in parallel relation and for supporting the opposite ends of the fabric in closely spaced relation on opposite sides of the strip of weft threads, the opposite ends of the fabric each including a fringe of warp threads which are supported such that they can be interweaved with the weft threads supported between the opposite ends to thereby form a woven seam, the apparatus comprising Jacquard means for causing the weft threads to form successive shed openings, first separating means for separating successive ones of the warp threads from one fringe, a first interlace arm for pulling a separated warp thread through a shed opening, a first transfer arm for receiving a separated warp thread from the first separating means and delivering it to the first interlace arm, said first interlace arm comprising means at its end for selectively gripping a warp thread and said interlace arm being
  • DE-U-8122451 discloses another example of an automatic seam weaving apparatus, in which the corresponding end threads of the fringes supported at opposite sides of the seam are separated from the fringes and inserted one after the other through a shed opening by respective thread separators, transfers members which grip the thread from the separator and deliver it to a position close to the shed opening, and members which receive the thread from the transfer member and insert it into the shed opening, each thread being extracted from the shed opening at a selected position across the shed by means of a plunger tool which is moved from above downwards into the shed to grip the thread and back upwards to extract the thread. After each pair of end threads have been inserted and extracted, the shed opening is changed and the plunger tool is moved to a different position across the shed for the next pair of end threads.
  • DE-U-8122450 discloses a separator device for singling out threads one at a time from the end of a row of threads, the device being movable towards the end of the row to engage and grip the end thread so that the thread is separated from the row when the device is moved away.
  • the present invention provides apparatus for forming a seam as defined in claim 1.
  • the present invention provides an improved apparatus for forming a woven seam joining together the opposite ends of woven fabrics such as fabrics employed on the Fourdrinier section of paper machines.
  • the apparatus of the invention provides a means for mechanically forming a seam and greatly reduces the amount of hand labor otherwise required in the seaming operation.
  • Jacquard machine facilitates control of the shed opening to produce any desired combination and the position of the pins produced can have any selected combination and the seam width can be varied substantially depending upon the fabric being seamed.
  • the heddles provided by the present invention are constructed such that they cas be placed around the weft threads and to engage the weft threads, and it is not necessary to thread the weft threads through the heddles.
  • the heddles are also constructed such that once they surround a weft thread, the weft thread is freely slidable in the heddle in the direction of the weft thread and this prevents stretching of the weft threads.
  • the beating of the warp thread against the seam face propagates across the seam face. This has the effect of causing the knuckles of the warp threads to be properly positioned with respect to the knuckles of the weft threads and tends to prevent undesirable twisting of the warp threads.
  • One of the advantages of the apparatus embodying the invention is that it is capable of making any seam style required and is not limited to producing just one type of seam style. This feature is provided by the employment of the Jacquard heddling apparatus in combination with the other apparatus to be described below.
  • the joint locations can be programmed and located as required.
  • Another advantage of the apparatus embodying the invention is that the controlled sequence of operation can be reversed. In the event that the apparatus produces a flaw in the woven seam thereby causing the machine to stop, the operator can reverse the heddling sequence to permit the seam to be unwoven and corrected.
  • Figure 1 is a schematic perspective view of the apparatus embodying the invention and for use in separating the warp threads from the fringe and for feeding them through a shed opening formed in the weft threads.
  • Figure 2 is a view similar to Figure 1 and showing a thread separator having separated a warp thread from the fringe of one end of the fabric.
  • Figure 3 is a view similar to Figures 1 and 2 and showing a transfer arm transferring the separated thread to an interlace arm which extends through the shed opening.
  • Figure 4 is a view similar to Figures 1-3 and further showing the interlace arm pulling the selected warp thread through the shed opening.
  • Figure 5 is a side elevation view of apparatus embodying the invention.
  • Figure 6 is an enlarged side elevation view of the portion of the apparatus illustrated in Figure 5.
  • Figure 7 is an enlarged side elevation view of a portion of the apparatus illustrated in Figure 5 and illustrating the lay and reed mechanism and the heddles forming the shed opening.
  • Figure 8 is a view taken along line 8-8 in Figure 6.
  • Figure 9 is a view taken generally along line 9-9
  • Figure 10 is a view taken along line 10-10 in Figure 9.
  • Figure 11 is a view taken along line 11-11 of Figure 9.
  • Figure 12 is an enlarged view of the end of transfer arm of the apparatus shown in Fig. 9 and with portions shown in cross section.
  • Figure 13 is a perspective view of a heddle illustrated in Fig. 7.
  • Figure 14 is an enlarged view of a portion of the spring box of the apparatus illustrated in Figure 5.
  • FIG. 1 Illustrated in Figure 1 is an apparatus embodying the invention and for forming a woven seam 10 joining the opposite ends 12 and 14 of a woven fabric belt
  • the opposite ends 12 and 14 of the woven fabric belt are illustrated as being supported in spacedapart relation.
  • a strip 16 of woven material having been cut from one of the opposite ends 12 and 14 of the belt, is supported between the opposite ends of the belt This strip is clamped at one end and weights are attached to the opposite end of this strip so that it is pulled taut.
  • the warp threads are removed from the strip of material 16 located between the opposite ends of the belt leaving only the weft threads 18.
  • the opposite ends 12 and 14 of the fabric can be supported in a conventional manner, with one end 12 of the fabric supported over a long metal tube and the other end 14 similarly draped over a long metal tube.
  • the metal tubes are supported at their opposite ends in a conventional manner as is used in a manual seam weaving process and with the metal tubes in spaced apart parallel relation.
  • the metal tubes are spaced apart by a dimension sufficient to house the seam therebetween, and the seam weaving machine embodying the present invention is positioned between the metal tubes and is supported for linear movement in the direction of the longitudinal axis of elongated metal tubes.
  • the opposite ends 12 and 14 of the belt each include a fringe 20 formed by removing a majority of the weft threads.
  • a few weft threads are left at the edge of the fringe 20 to form a relatively narrow ribbon 22 functioning to maintain the warp threads 24 of the fringe 20 in the proper position and to maintain proper relative alignment of the warp threads 24 with respect to one another.
  • the opposite ends of the ribbon 22 are supported such that the warp threads 24 forming the fringe 20 extend vertically upwardly from the peripheral edges of the strip 16 and in spaced apart facing relation on opposite sides of the strip.
  • the woven seam 10 is formed by separating a first one of the warp threads or strands 24 of the fringe 20 and weaving it into the weft threads 18 of the strip. Then a warp thread or strand 24 of the fringe at the opposite end of the strip is separated, and this strand is woven into the weft threads 18 of the strip. This cycle is repeated until a seam has been woven along the entire width of the belt being seamed.
  • Figs. 1 and 2 illustrate schematically the means provided by the apparatus embodying the invention for separating successive ones of the warp threads 24 of the fringe 20 such that they can then be woven into the weft threads 18 of the strip 16. While this means for separating will be described in greater detail hereinafter, in the construction shown in Figs. 1 and 2, it includes a reciprocably moveable thread separator 28, the thread separator 28 being moveable from a retracted position shown in solid lines in Figs. 1 and 2 to a second or forward position wherein the thread separator 28 can engage or grip the next successive warp thread 24 of the fringe 20. The thread separator 28 then moves to its retracted position pulling the gripped thread 24 away from the remainder of the fringe 20. One such thread separator 28 is positioned adjacent each fringe 20.
  • the apparatus embodying the invention further includes a pair of transfer arms 30 positioned on opposite sides of the seam 10.
  • Each transfer arm 30 is supported for pivotal movement about a horizontal axis parallel to the warp threads in the woven seam 10.
  • the free end 32 of each transfer arm 30 includes means for gripping a warp thread 24 held by the thread separator 28 when the thread separator 28 is in the retracted position as shown in Figure 2.
  • the free end 32 of the transfer arm 30 is positionable so that it can grip the selected warp thread 24 when the thread separator 28 moves to the retracted position.
  • the transfer arm 30 is then pivotable from the thread gripping position shown in Figs. 1 and 2 to a position shown in Fig. 3 wherein the free end of the warp thread 24 is moved generally forwardly and downwardly as seen in Figs. 1 through 4 to the position shown in Fig. 3 wherein the free end of the warp thread 24 is moved to the plane of the seam 10.
  • the apparatus embodying the invention further includes means for causing the weft threads 18 of the strip 16 to form a shed opening 36 as illustrated in Figs. 3 and 4. While this apparatus will be described in greater detail hereinafter, it generally includes a Jacquard device of the type conventionally used to form a shed opening in weaving apparatus.
  • the apparatus embodying the invention further includes a pair of interlace arms 40 supported for movement between a position as shown in Fig. 3 wherein the free end 42 of the interlace arm 40 extends through the shed opening 36 to grip the warp thread 24 held by the free end 32 of the transfer arm 30, and a retracted position shown in Fig. 4. The free end of the warp thread 24 is pulled by the interlace arm 40 through the shed opening 36 to an opposite side of the seam 10.
  • the apparatus embodying the invention further includes a pair of extractor arms 44 positioned on opposite sides of the seam 10, the extractor arms 44 being positioned closely adjacent the longitudinal edges of the seam 10 to be formed.
  • Each extractor arm 44 is adapted to move between an extended position as shown in Fig. 4 and wherein the free end of the extractor arm 44 is in a position to grip a warp thread 24 held by the free end of the interlace arm 40.
  • the extractor arm 44 can thus grip the end of the warp thread 24 which has been pulled through the shed opening 36 by the interlace arm 40 as shown in Fig. 4, and the extractor arm 44 can then be moved rearwardly to the retracted position shown in phantom in Fig. 4 wherein the gripped warp thread 24 is pulled against the seam face 46.
  • a selected warp thread 24 of the fringe 20 is separated from the remaining warp threads of the fringe, and fed by the transfer arm 30 and the interlace arm 40 through the shed opening 36.
  • the warp thread 24 is then pulled against the seam face 46 by the extractor arm 44.
  • a lay and reed mechanism to be described hereinafter move forward and the reed rolls to beat in the warp thread, and the reed then moves back to the neutral position.
  • the shed opening 36 is then changed or reversed by operation of the Jacquard machine referred to above, and a warp thread 24 from the fringe 20 on the opposite side of the seam 10 is then selected and separated from that fringe.
  • This warp thread 24 is then gripped by a transfer arm 30 and conveyed to a position where it can be gripped by the free end of an interlace arm 40 extending through the shed opening 36.
  • the extractor arm 40 can then engage the warp thread 24 so as to pull it against the seam face 46.
  • the lay and reed mechanism come forward and the reed rolls to beat in the warp thread, and the reed moves back to the neutral position. This process is repeated continually until each warp thread of the fringes 20 is woven into the weft threads 18 of the strip 16 to thereby form a woven seam joining the opposite ends 12 and 14 of the woven belt
  • FIG. 5 illustrates more particularly a preferred form of the apparatus embodying the invention and adapted to accomplish the seam weaving process described above.
  • the apparatus shown in Figure 5 includes a frame structure 50 adapted to support the seam weaving apparatus described above and supported for movement by a plurality of wheels 52.
  • the frame 50 is supported for movement such that the seam weaving apparatus supported by the frame 50 can move linearly along the length of the seam 10 as the seam weaving process proceeds.
  • the machine frame 50 includes a vertically positioned column 54 supporting a horizontal cantilevered frame 56.
  • the cantilevered frame in turn supports the thread separating and weaving apparatus described above.
  • the vertical column 54 also supports a control box 58 adapted to house conventional pneumatic controls used to control the operation of the thread separating apparatus and the weaving apparatus.
  • the frame 50 further includes means providing a horizontal flat surface for supporting the woven seam 10 joining the opposite ends 12 and 14 of the woven fabric belt.
  • this flat surface is formed by a sheet metal housing 51 supported by the frame 50 and including a planar horizontal upper surface.
  • the frame 50 also supports a conventional Jacquard machine 60.
  • the Jacquard machine being adapted to control the shed opening formed by the weft threads 18 of the strip 16.
  • the Jacquard machine can be a Jacquard device produced by Samuel Dracup & Sons, Ltd., Lane Close Mills, Great Horton, Bradford West Yorkshire, England.
  • This conventional and commercially available Jacquard machine 60 is supported by the frame 50 such that the needles of the Jacquard machine project upwardly and are adapted to move vertically in response to operation of the Jacquard machine.
  • the frame also supports a heddling assembly 62 and a conventional spring box 64 mounted vertically above the Jacquard machine 60.
  • the spring box 64 includes a large number of vertically mounted coil springs, at least one spring being provided for each of the weft threads 18 of the strip 16.
  • a plurality of heddles 66 are mounted between the springs of the spring box 64 and the vertically reciprocal needles of the Jacquard machine 60.
  • An individual heddle 66 surrounds each one of the weft threads 18, and the heddles 66 are connected to respective ones of the vertically oriented springs of the spring box 64 and to respective ones of the needles of the Jacquard machine 60.
  • the Jacquard machine 60 operates to cause selected ones of the needles to be moved vertically thereby causing a consequent vertical movement of the heddle 66 connected to that needle. Such movement of the heddles 66 results in movement of the weft threads 18 and formation of a shed opening. It will be understood by those skilled in the art that by the use of the Jacquard heddling device, the shed opening 36 formed by the weft threads 18 can be varied in any desired pattem and the width of the shed opening 36 can be varied depending upon the seam style desired.
  • each heddle is comprised of a pair of thin metal blades 67 and 69 of substantially the same length. These blades 67 and 69 are positioned in parallel facing relation and a thin circular metal disc 71 is positioned between the ends of the blades so as to support these ends of adjacent parallel blades in spaced parallel facing relation.
  • the circular metal disc has a thickness slightly greater than the thickness of the weft threads.
  • the blades 67 and 69 are fixedly joined to the metal disc 71. While the means for joining the blades 67 and 69 to the metal disc could have various constructions, in one preferred form of the invention, the blades 67 and 69 are laser welded to the metal disc 71.
  • the heddle 66 also includes a second metal disc 73 positioned between the blades 67 and 69 adjacent the first metal disc 71 but spaced therefrom.
  • the second metal disc 73 is fixed to one of the blades 67 and includes a planar side adapted to contact the other metal blade 69.
  • the blades 67 and 69 are flexible, and since the blades are joined together at only one end, they can be spread apart as shown in Fig. 13.
  • heddles 66 are placed over individual weft threads 18.
  • the free ends of the blades 67 and 69 of the heddles 66 are separated and slipped over weft threads 18.
  • the blades 67 and 69 are sufficiently flexible that the blade 67 can be pulled away from the second disc 73 suffidently that the weft thread 18 can be passed between the blade 67 and the second disc so as to be positioned between the discs 71 and 73 and the blades 67 and 69.
  • the weft thread is thus securely held in the heddle 66.
  • the means for separating the warp threads is illustrated more particularly in Figs. 6 and 8-11.
  • the apparatus on one side of the woven seam 10 for separating warp threads 24 and for feeding them into the weft threads 18 so as to form the woven seam is a mirror image of the apparatus provided on the opposite side of the seam. Accordingly, only the apparatus on one side of the seam will be described in detail.
  • a pair of depending arms 70 extend downwardly from the free end of the cantilevered frame 56, each of the arms 70 having an upper end fixed to the free end of the cantilevered frame 56.
  • the downwardly depending arms 70 are substantially the same in construction and accordingly, only one will be described in detail.
  • the downwardly depending arms 70 each support a horizontally extending support arm 72 (Figs. 6, 8 and 9) and a slide track or slide body 74.
  • the means for separating successive warp threads 24 from the fringe 20 includes a separator body 28 adapted to be horizontally moveable from a retracted position shown in phantom in Fig. 9 to an extended position wherein the separator body 28 can engage and grip the next successive one of the warp threads 24 of the fringe 20.
  • the separator body 28 is also provided for supporting the separator body 28 for such reciprocal movement. While the separator body 28 could be supported in various ways, in the illustrated construction, and as shown in Fig. 11, the lower surface 76 of the slide track 74 includes an elongated, T-shaped groove 78 extending along the length of the slide track 74, and a T-shaped slide member 80 is housed in the groove 78 and is reciprocably moveable therein in the direction of the longitudinal axis of the slide track 74.
  • the separator body 28 is fixed to the slide member 80 so as to be reciprocably moveable with the slide member 80.
  • Means are also provided for causing reciprocable linear movement of the separator body 28 between the extended position and the retracted position.
  • this means for causing such movement includes a pneumatic cylinder 82 and piston 84.
  • the cylinder 82 includes a forward end fixedly joined to the slide track 74, and the free end of the piston 84 is connected to the slide member 80.
  • the pneumatic cylinder 82 could comprise any suitable commercially available cylinder assembly, in one preferred form of the invention, the piston and cylinder can be commercially available products manufactured by Kuhnke Pneumatic, Malente/Holstein, West Germany.
  • the separator 28 in the illustrated construction, it comprises a very small L-shaped plate, the plate being positioned such that it defines a generally horizontal plane and the leg of the "L" 86 extends forwardly toward the fringe.
  • the separator body 28 also includes a groove 88 formed at the juncture of the leg 86 of the separator and the body portion, this groove 88 being adapted to house a plurality of warp threads 24 of the fringe 20.
  • the separator 28 also includes a selection needle 90 housed in a narrow generally planar and horizontally oriented slot 91 bisecting a portion of the separator body 28.
  • the selection needle 90 is supported there for horizontal reciprocal movement in the narrow planar slot 91 in a direction perpendicular to the vertical plane defined by the fringe 20 of warp threads 24.
  • the selection needle 90 includes a very small hook 92 adapted to engage a single warp thread 24 of the fringe 20 and to clampingly force that warp thread 24 against the surface 94 of the leg portion 86 of the separator body.
  • this means comprises a small pneumatic cylinder 96 fixed to the separator body 28 and a piston 98 being connected to the selection needle 90.
  • the cylinder 96 is connected to a source of air pressure by a flexible hose 100.
  • Means are also provided for resiliently supporting the selection needle 90 such that as the separator body 28 moves from the retracted position to the extended position wherein the selection needle 90 engages the leading warp thread 24, the selection needle 90 will yield to the force applied on the selection needle 90 by the warp thread 24 thereby preventing the separator apparatus from causing the warp threads 24 to bunch up when the warp threads are engaged by the selection needle 90.
  • the horizontal narrow slot 91 in the separator body supports the selection needle 90 such that it is moveable in the slot 91 in a generally horizontal plane and toward and away from the warp threads 24.
  • a very light leaf spring 102 is mounted in the slot 91 and yieldably resiliently supports the selection needle 90. The leaf spring 102 is particularly selected to support the selection needle but to permit sufficient movement of the selection needle when it engages the lead warp thread 24 and so as to prevent bunching of the warp threads.
  • the separator body 28 is supported such that it is positioned between weft threads 22 of the ribbon supporting the free edge of the warp threads 24.
  • the separator body 28 is adapted to be slideable reciprocable in the direction of the weft threads 22 and between the weft threads. The weft threads 22 will thus ensure alignment or proper positioning of the ends of the warp threads 24 with respect to the separator body 28.
  • means are also provided for gripping the warp thread 24 pulled away from the fringe by the separator 28 and for moving the free end of the warp thread 24 to a position adjacent the shed opening 36 and to one side of the shed opening 26 whereby the warp thread 24 may be gripped by an interlace arm 40.
  • This means includes the transfer arm 30 best illustrated in Figures 6 and 8-11.
  • the transfer arm 30 is generally L-shaped and induces one end 32 adapted to grip the warp thread 24 and an opposite end 104 supported by the frame. More particularly, the frame or support structure includes a rearwardly and horizontally extending rigid arm 106 adapted to support the opposite end 104 of the transfer arm 30.
  • the free end of the transfer arm i.e.
  • end 32 of the transfer arm 30 adapted to be positioned adjacent the separator assembly includes means for gripping the selected separated warp thread 24. While the means for gripping could have other construction, as best shown in Figs. 9 and 12, a notch or opening 108 is cut in the free end 32 of the transfer arm 30, and the free end of the transfer arm is hollow and functions as a cylinder 109.
  • the cylinder houses a pneumatically operated piston 110, the piston 110 being supported for movement between a first position where in the notch 108 is open and a second position wherein the piston 110 moves toward the free end of the transfer arm 30 to clamp the selected warp thread 24 against the end of the notch 108 to thereby clampingly engage the warp thread 24 as shown in Fig. 12.
  • this means comprises a pneumatic rotary cylinder 112 fixed to the support arm 106, and the piston 114 of the rotary cylinder 112 also defines a cylinder of a pneumatic linearly extensible cylinder assembly.
  • a reciprocable piston 116 is fixed to the end 104 of the transfer arm 30. While the rotary piston 114 and cylinder 112 could comprise any conventional rotary pneumatic piston and cylinder, in one embodiment of the invention, they can comprise a commercially available rotary piston and cylinder manufactured by Microtechnik, Grenchen/Switzerland.
  • the transfer arm 30 In operation of the transfer arm 30, it is initially positioned as shown in Figure 6 with the piston 110 (Fig. 12) housed in the free end 32 of the transfer arm 30 in a retracted position.
  • the separator 28 functions to grip a warp thread 24 and pull it away from the remaining warp threads of the fringe 20, and when the separator body 28 moves rearwardly, the warp thread 24 is pulled into the notch 108 in the free end 32 of the transfer arm 30.
  • the piston 110 in the free end 32 of the transfer arm 30 is then actuated so as to damp the warp thread 24 against the end wall 111 of the notch 108.
  • the linear piston 116 and cylinder 114 are then actuated to cause inward movement of the transfer arm 30, i.e.
  • this means includes the interlace arm 40 supported for pivotal movement about a generally vertical axis.
  • the interlace arm 40 is generally L-shaped and includes one end 120 pivotally supported for pivotal movement about a vertical axis and an opposite or free end 122 supported for movement in a generally horizontal path from one side of the seam 10 through the shed opening 36 to an opposite side of the seam.
  • the free end 122 of the interlace arm 40 is similar in construction to the free end 32 of the transfer arm 30 in that it also includes means for gripping a warp thread as illustrated in Fig. 12.
  • the free end 122 of the interlace arm 40 includes a notch 124 adapted to house the end of the warp thread, and the free end 122 of the interlace arm 40 is tubular so as to define a cylinder housing a piston moveable from a retracted position to a warp thread damping position.
  • the interlace arm 40 In operation of the interlace arm 40, prior to downward pivotal movement of the transfer arm 30, the interlace arm 40 will swing from a retracted position (Fig. 2) through the shed opening 36 to the position illustrated in Fig. 3 wherein the free end 122 of the interlace arm 40 is adjacent the edge of the seam 10.
  • the transfer arm 30 is then caused to pivot downwardly, the free end 32 of the transfer arm 30 will move downwardly over the free end 122 of the interlace arm 40 thereby draping the warp thread 24 over the free end 122 of the interlace arm 40 such that the warp thread 24 can be received in the notch 124 provided in the interlace arm 40.
  • the piston in the free end of the interlace arm is caused to extend such that it will clampingly engage the warp thread 24, and the piston clamping means of the transfer arm 30 will release the warp thread.
  • the transfer arm 30 will be pivoted to its original position, and the interlace arm 40 will also be returned to its retracted position (Fig. 4) with the free end 122 of the interlace arm 40 pulling the warp thread 24 through the shed opening.
  • the interlace arm 40 could have other configurations, and other means could be provided for causing translational movement of the free end 122 of the interface arm 40 for movement from the retracted position to a position wherein the free end of the interlace arm extends through the shed opening 36 to a position wherein the free end 122 of the interlace arm 40 extends through the shed opening 32 to a position where it can grip a warp thread 24 held by the transfer arm.
  • the interlace arm could be linear and a relatively long stroke piston and cylinder could be provided for causing linear movement of an end of such an interlace means.
  • Means are also provided for gripping the end of the warp thread 24 supported by the free end 122 of the interlace arm 40 after the interface arm has pulled the end of the warp thread 24 through the shed opening 36 and for pulling this free end of the warp thread rearwardly and upwardly out of the shed area and for causing the warp thread to engage the seam face 46.
  • This means also provides means for keeping tension on the warp thread while reed dents can engage the warp thread and force the warp thread against the seam face 46.
  • This means for gripping the end of the warp thread 24 includes an extractor gripper 44 which comprises a generally vertically extending arm.
  • the lower end 130 (Fig. 6) of the extractor gripper arm 44 includes means for gripping the free end of the warp thread 24 held by interlace arm 40.
  • this means for gripping is similar to that provided on a free end of the transfer arm 30 and the free end 32 of the interlace arm 40 and comprises a piston and cylinder arrangement.
  • the lower end 130 of the extractor gripper arm is tubular and functions as a cylinder housing a piston.
  • the lower end 130 of the extractor arm 44 includes a notch 132 adapted to house the end of the warp thread 24, and a piston 131 housed in the lower end 130 is reciprocably moveable so as to clampingly engage the warp thread 24.
  • Means are also provided for causing translational horizontal movement of the extractor arm 44 from a retracted position shown in Fig.
  • FIG. 4 illustrates one of the extractor arms 44 having been moved forwardly from the retracted position shown in phantom in Fig. 4 to a forward position wherein it can engage a warp thread 24. While the means for causing horizontal reciprocal movement of the extractor arm 44 could have various constructions, in the illustrated arrangement, the extractor arm 44 is supported for movement by a linear bearing 136 supported by an upper end of the support arm 70 which is in tum fixed to the free end of the cantilevered frame 56.
  • the linear bearing 136 includes a horizontally extending rod 138, and the extractor arm 44 is supported by a slide member 140 supported on the rod 138 for linear reciprocable movement. Means are also provided for causing selected translational movement of the slide member 140 along the support rod 138. While this means could include a conventional pneumatic piston and cylinder, in the illustrated arrangement, the means for causing movement of the slide member 140 includes a commercially available pneumatic cable cylinder 142 manufactured by Martonair, Twickenhaun, England.
  • the cable cylinder 142 generally includes a cable 144 reeved over a pair of pulleys 146.
  • the slide member 140 is fixed to the cable 144.
  • the cable cylinder 142 also includes a cylinder 146, and a piston 148 is housed in the cylinder 146.
  • the cable 144 is connected to the piston 148.
  • the piston 148 causes movement of the cable 144 and translational movement of the slide member 140 on the support rod 138.
  • the extractor gripper assembly also includes means for causing selected vertical movement of the lower end 130 of the extractor arm 44.
  • this means comprises a pair of pneumatic cylinders 150 and 152 mounted in vertically slacked relation. More particularly, this means includes a first pneumatic cylinder 150 fixed to the slide member 140 and mounted vertically.
  • This cylinder 150 includes a piston 154 and the second cylinder 152 is fixedly attached to the lower end of this piston 154.
  • the second cylinder 152 houses a piston 156 also supported for vertcial reciprocal movement. The lower end of the piston 156 supports the extractor arm 44.
  • the cable cylinder 142 is actuated to cause the extractor gripper 44 to move forwardly from the position shown in Figure 6 to a forward position wherein the lower end 130 of the extractor gripper 44 is adjacent the shed opening 36.
  • the cylinders 150 and 152 are then actuated to cause downward movement of the extractor gripper 44 to a position wherein the notch 132 can receive the warp thread 24 as the interlace arm 40 pulls the warp thread 24 through the shed opening.
  • the warp thread 24 is then clampingly engaged in the notch 132 by the piston 131.
  • the cylinder 152 is then actuated to cause upward movement of the extractor gripper arm 44 to a position where in the warp thread 24 held by the free end 130 of the extractor gripper 44 will be positioned slightly above the plane of the seam.
  • the cable cylinder 142 is then actuated again to cause rearward translational movement of the extractor arm 44 thereby pulling the warp thread 24 rearwardly such that it is pulled against the seam face 46 and the free end of the warp thread 24 is pulled under the ski 154.
  • the second cylinder 150 is then actuated to cause upward movement of the extractor arm 44 to the position which is shown in Fig. 6.
  • Means are also provided for beating the warp thread 24 against the seam face 46 in a manner which provides for alignment of the knuckles of the fabric.
  • the means for beating the warp threads 24 against the seam face 46 is best shown in Fig. 7 and generally comprises a lay and reed mechanism 160 supported by the frame 50 and positioned below the woven seam 10 being formed.
  • the lay and reed mechanism 160 includes a plurality of reed dents 162, the reed dents 162 being conventional and generally comprising thin elongated metal strips positioned in side by side stacked relation, the reed dents defining a plurality of closely spaced vertical paralled planes, and with one of the strips or reed dents 162 being positioned between each pair of weft threads 18.
  • the lay and reed mechanism 160 also includes means for supporting the plurality of reed dents 162 such that they are moveable from the position shown in Fig. 7 in solid lines to the dotted line or phantom position.
  • the means for supporting the reed dents 162 includes a support arm 164 which is pivotably joined at its lower end to the machine frame 50 for pivotal movement between the solid line position or retracted position shown in Fig. 7 and the phantom position wherein the reed dents 162 can beat the warp thread 24 into the seam face 46.
  • Means are also provided for causing such reciprocal or pivotal movement of the support arm 164.
  • this means includes a pneumatic piston 166 pivotably connected by a pin 168 to the machine frame 50 and including a piston 170 pivotably connected to the support arm 164 by a pin 172 at a point intermediate the opposite ends of the support arm 164.
  • the upper end of the support arm 164 includes a pivot shaft 174.
  • the planar thin metal strips forming the reed dents 162 are mounted in side by side stacked relationship on this pivot shaft 174, and the reed dents 162 are supported on pivot shaft 174 to be freely pivotable about the axis of this pivot shaft 174 and are freely and independently moveable with respect to each other.
  • One of the features of the invention is the provision of means, when the support arm is in the phantom position shown in Fig. 7, for causing engagement of successive ones of the reed dents 162 against the warp thread 24 to beat the warp thread against the seam face 46. This means provides for a wave action of the reed dents 162.
  • This means for causing the reed dents 162 to move from the dotted line position to the broken line position in Fig. 7 includes a reed roller 180 adapted to engage the lower ends 182 of the reed dents 162 as shown in Fig. 7.
  • the reed roller 180 is supported for translational movement in the direction of the axis of the horizontal pivot shaft 174 of the reed dents 162 such that the roller 180 can move from one end of the pivot shaft 174 to the opposite end and contact successive ones of the reed dents 162 as it moves reciprocably in this manner.
  • Means are also provided for causing such translational movement of the reed roller 180 along the length of the horizontal pivot shaft 174.
  • the reed roller 180 is supported for rotation about the axis of a generally vertically extending shaft 186, the reed roller 180 being freely rotatable about this shaft.
  • the lower end of the shaft 186 is supported by a slide member 188 supported for slideable reciprocable movement on a pair of support rods 190.
  • the lower end of the slide member 188 is fixed to a cable 192 of a cable cylinder 194 having the same structure as the cable cylinder 142 supporting the extractor gripper arm 44.
  • Operation of the cable cylinder 194 is functional to cause translational reciprocal movement of the slide member 188 and the reed roller 180 along the support shafts 190 and in the direction of the longitudinal axis of the pivot shaft 174 of the reed dents. While the slide member 188 has been described as being driven by a cable cylinder 194, it will be readily understood that in other embodiments of the invention, an elongated pneumatic piston and cylinder arrangement could be provided to cause such translational movement. Similarly, a screwdrive arrangement or other similar conventional device could also be employed.
  • the frame 50 also includes an electric motor 51 operably drivingly connected to at least one wheel 52 supporting the frame 50 such that the seaming machine is mechanically driven along the length of the seam as the seam weaving process continues.
  • Means are also provided for sending a signal to the electric motor 51 to cause operation of the electric motor 51 and movement of the frame 50 as the seam weaving process continues and the seam face builds up.
  • the lay and reed mechanism 160 includes means for sending a signal to the electric drive motor 51 for causing the motor to cause a slight advance of the machine when the seam face 46 builds up.
  • this means for sending a signal to the motor includes an electrical switch 196 fixed to the support arm 164.
  • the reed dents 162 and the structure for causing pivotal movement of the reed dents about the horizontal pivot shaft 174 are all supported by a frame 198, the frame 198 being pivotably joined by a pivot pin 200 to the upper end of the support arm 164.
  • the frame 198 is supported for limited pivotal movement with respect to the upper end of the support arm 164.
  • the frame structure 198, the reed mechanism and the means for causing respective pivotal movement of the reed dents 162 are weighted such that when the support arm is in the position shown in phantom in Fig.
  • the weight of this structure tends to cause the reed dent supporting mechanism to pivot about the shaft in a clockwise direction as seen in Fig. 7.
  • the seam face 46 will restrict the movement of the reed dents.
  • the frame 198 will pivot in a counterclockwise direction and will engage the switch 196 thereby sending a signal to the electric motor 51 to advance the seaming machine incrementally forwardly away from the seam face 46.
  • Means are also provided for controlling the operation of the pneumatic piston and cylinder assemblies described above and for supplying air pressure to these piston and cylinder assemblies so as to cause operation of the pneumatic cylinder assemblies in a controlled sequence.
  • the control means can be housed in the control housing 58 and can comprise a commercially available Martonaire Bi-Selector ModeV660H manufactured by Martonaire, Ltd., Twickenham, England.
  • this control apparatus can be operably connected by air lines to each of the pneumatically operated piston and cylinders through a series of control valves.
  • the pneumatic sequencer operates to supply air to the pneumatic piston and cylinders in sequence to thereby provide for a step by step controlled and sequential operation of the various components.
  • each gripper includes a piston and cylinder arrangement.
  • the end of each such cylinder is provided with an electrical contact 210 (Fig. 12) and the piston also includes an electrical contact 212.
  • the thread 24 will be positioned between the piston contact 212 and cylinder contact 210 thereby preventing electrical contact between the piston contact 212 and cylinder contact 210. If, on the other hand, the thread is not properly gripped, the end of the piston will make electrical contact with the cylinder contact 210 and the machine will be shut off.
  • the electrical apparatus for shutting off the machine can also cause an alarm to be sounded.
  • One of the features of the invention is that in the event the machine is shut off due to failure by one of the grippers to properly grip the warp thread 24, the operator can then cause the heddling sequence to reverse to a point where any flaw that has been created can be corrected.
  • the seam width can be adjustable from, for example, approximately 2 inches to approximately 6 inches depending on the type of fabric being seamed and the width of the seam desired.
  • the downwardly extending support arms 70 are connected to the cantilevered frame 56 in a manner which permits adjustable movement of the arms toward and away from each other so as to permit adjustment of the positioning of the selector mechanisms and the warp thread transfer and weaving means. Accordingly, the width of the fabric strip positioned between the ends of the woven fabric can be of any desired width and the resulting seam can have any selected width.

Claims (8)

  1. Appareil pour former une jonction (10) dans une certaine longueur d'une toile tissée présentant des extrémités opposées (12, 14), pour relier ensemble les extrémités opposées de la toile grâce à une jonction tissée et pour former ainsi une courroie en toile tissée sans fin, cet appareil étant destiné à être utilisé avec des moyens supportant une bande de fils de trame (18) en relation parallèle et supportant des extrémités opposées (12, 14) de la toile en relation espacée de part et d'autre de la bande de fils de trame, les extrémités opposées de la toile comprenant chacune une frange (20) de fils de chaîne (24) qui sont supportés de manière à pouvoir être entrelacés avec les fils de trame (18) supportés entre les extrémités opposées pour former ainsi une jonction tissée, l'appareil comprenant une machine Jacquard (60, 62, 64) pour amener les fils de trame (18) à former des ouvertures de foule successives (36), des premiers moyens (28) de séparation pour séparer des fils successifs parmi les fils de chaîne (24) au départ d'une frange (20), un premier bras d'entrelacement (40) destiné à tirer un fil de chaîne séparé à travers l'ouverture de foule (36), un premier bras de transfert (30) destiné à recevoir un fil de chaîne séparé venant des premiers moyens de séparation (28) et pour l'envoyer au premier bras d'entrelacement (40), ledit premier bras d'entrelacement (40) comprenant des moyens (124) à son extrémité (122) pour saisir sélectivement un fil de chaîne et ledit bras (40) étant supporté pour se déplacer depuis une première position dans laquelle l'extrémité (122) du bras d'entrelacement s'étend à travers l'ouverture de foule (36) pour saisir un fil de chaîne débité par le premier bras de transfert (30) et une seconde position dans laquelle l'extrémité (122) du bras d'entrelacement est rétractée depuis l'ouverture de foule pour tirer le fil de chaîne à travers l'ouverture de foule, et ledit premier bras de transfert (30) présentant des moyens (108, 110) destinés à saisir un fil de chaîne, le premier bras de transfert (30) étant supporté pour son déplacement entre une première position dans laquelle le bras de transfert est capable de saisir un fil de chaîne des premiers moyens de séparation (28) et une seconde position dans laquelle le premier bras de transfert porte le fil de chaîne vers une position dans laquelle le fil de chaîne peut être saisi par l'extrémité (122) du premier bras d'entrelacement (40) lorsque l'extrémité du bras d'entrelacement s'étend à travers l'ouverture de foule (36), l'appareil comprenant également des deuxièmes moyens de séparation (28), un deuxième bras de transfert (30) et un deuxième bras d'entrelacement (40), similaires auxdits premiers moyens de séparation, audit premier bras de transfert et audit premier bras d'entrelacement, et agencés à fonctionner d'une façon similaire durant la prochaine ouverture de foule (36) pour séparer le prochain fil de chaîne (24) de l'autre frange (20) et l'alimenter à travers ladite prochaine ouverture de foule, caractérisé en ce que les premiers et deuxièmes moyens de séparation comprennent chacun un séparateur (28) qui est mobile en va-et-vient entre une position rétractée et une position avancée de contact avec le fil de chaîne, et qui comprend des moyens (90, 92) destinés à saisir un fil de chaîne individuel (24) de la frange respective (20) lorsque le séparateur est dans la position avancée, de sorte que le fil de chaîne choisi est tiré à l'écart de la frange lorsque le séparateur est rétracté, en ce que les moyens de saisie (108, 110) de chaque bras de transfert (30) est pourvue à une extrémité (32) du bras de transfert et est capable de saisir sélectivement un fil de chaîne, et l'extrémité (32) de chaque bras de transfert (30) est adjacente au séparateur respectif (28) pour saisir le fil de chaîne sélectionné à partir de celle-ci lorsque le bras de transfert est dans sa première position et le séparateur est dans la position rétractée, et en ce que l'appareil comprend en plus des premier et second bras extracteur (44) positionnés de façon adjacente aux bords longitudinaux de la jonction (10) étant formée, chaque bras extracteur (44) étant agencé à se déplacer entre une position d'extension dans laquelle l'extrémité libre du bras extracteur (44) peut saisir l'extrémité d'un fil de chaîne (24) qui a été tiré à travers l'ouverture de foule (36) par le bras d'entrelacement (40) respectif et une position rétractée vers l'arrière dans laquelle le fil de chaîne saisi est tiré contre la face (46) de la jonction.
  2. Appareil suivant la revendication 1, caractérisé en ce que cette machine Jacquard (60) comprend une série d'aiguilles disposées en dessous des fils de trame (18) et supportées en vue d'un déplacement vertical de va-et-vient, une boîte à ressorts (64) disposée au-dessus des fils de trame, cette boîte à ressorts comprenant une série de ressorts, et une série de lisses (66) localisées entre les aiguilles susdites et la boîte à ressorts, ces lisses étant reliées aux aiguilles et aux ressorts de la boîte à ressorts, les lisses susdites étant destinées à coopérer avec les fils de trame et à provoquer un déplacement vertical de ces fils de trame pour former l'ouverture de foule (36) en réponse au mouvement des aiguilles susdites.
  3. Appareil suivant la revendication 2, caractérisé en ce que les lisses (66) peuvent être introduites de manière coulissante sur les fils de trame (18) pour que ceux-ci soient logés dans les lisses.
  4. Appareil suivant l'une quelconque des revendications précédentes, dans lequel chaque frange (20) est supportée d'une manière générale verticalement et comprend une série de fils de chaîne (24) disposés côte à côte en relation parallèle, les fils de chaîne étant supportés par au moins un fil de trame (22) à la périphérie de la frange, cet appareil étant en outre caractérisé en ce que le séparateur (28) est mobile en va-et-vient entre sa position avancée et sa position rétractée dans une direction parallèle au fil de trame (22).
  5. Appareil suivant la revendication 4, caractérisé en ce que les moyens de saisie (90, 92) du séparateur (28) sont supportés de manière élastique par ce séparateur et sont agencés pour saisir le premier fil de chaîne rencontré lorsque ce séparateur (28) se déplace depuis la position rétractée vers la position avancée.
  6. Appareil suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre des moyens (16) pour pousser de force le fil de chaîne (24) tiré à travers l'ouverture de foule (36) susdite, contre la face (46) de la jonction, ces moyens pour pousser de force le fil de chaîne comprenant une série de dents de peigne (162) supportées en relation étroitement espacée et disposées entre les fils de trame (18) pour séparer ces fils.
  7. Appareil suivant la revendication 6, caractérisé en ce que les moyens susdits (160) destiné à pousser de force le fil de chaîne contre la face (46) de la jonction comprennent des moyens (164) destinés à supporter les dents de peigne (162) en vue de leur mouvement depuis une première position espacée de la face de la jonction vers une seconde position adjacente à cette face de la jonction mais étroitement espacée de celle-ci, et des moyens (180) pour amener des dents successives parmi les dents de peigne à se déplacer depuis la seconde position vers une position dans laquelle le fil de chaîne est poussé de force contre la face de la jonction.
  8. Appareil suivant la revendication 7, caractérisé en ce que les dents de peigne (162) sont supportées en vue d'un déplacement pivotant limité autour d'un axe (174) parallèle à la face de la jonction et en vue d'un déplacement indépendant autour de cet axe les unes par rapport aux autres, et dans lequel les moyens prévus pour amener les dents successives parmi les dents de peigne à coopérer avec le fil de chaîne comprennent un rouleau (180) supporté en vue de son déplacement au long de la face de la jonction et pour coopérer avec les dents de peigne au fur et à mesure que ce rouleau se déplace au long de la face de la jonction et pour amener les dents de peigne à pousser de force le fil de chaîne contre la face de la jonction au fur et à mesure que le rouleau se déplace au long de la face de cette jonction.
EP86301286A 1984-03-07 1986-02-22 Machine automatique pour la jonction de deux extrémités de bande Expired - Lifetime EP0236601B2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US06/770,352 US4581794A (en) 1984-03-07 1985-08-27 Automatic seaming machine for fabric belts
DE8686301286T DE3674192D1 (de) 1986-02-22 1986-02-22 Automatische maschine zum verbinden zweier enden eines bandes.
EP86301286A EP0236601B2 (fr) 1986-02-22 1986-02-22 Machine automatique pour la jonction de deux extrémités de bande
AT86301286T ATE56490T1 (de) 1986-02-22 1986-02-22 Automatische maschine zum verbinden zweier enden eines bandes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86301286A EP0236601B2 (fr) 1986-02-22 1986-02-22 Machine automatique pour la jonction de deux extrémités de bande

Publications (3)

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EP0236601A1 EP0236601A1 (fr) 1987-09-16
EP0236601B1 EP0236601B1 (fr) 1990-09-12
EP0236601B2 true EP0236601B2 (fr) 1996-09-04

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EP86301286A Expired - Lifetime EP0236601B2 (fr) 1984-03-07 1986-02-22 Machine automatique pour la jonction de deux extrémités de bande

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AT (1) ATE56490T1 (fr)
DE (1) DE3674192D1 (fr)

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DE3823715A1 (de) * 1988-07-13 1990-01-18 Oberdorfer Fa F Verfahren zur herstellung einer stecknaht zum endlosmachen eines gewebebandes und nahtungsmaschine
DE4133374A1 (de) * 1991-10-05 1993-04-08 Wetec Webmaschinentechnik Gmbh Fadenvereinzeler, der aus einem gewebe gezielt einzelne oder mehrere faeden entnehmen kann
DE4215971C2 (de) * 1992-05-14 2000-08-17 Wis Engineering Gmbh Timelkam Verfahren zum Herstellen einer Naht zum Endlosmachen eines Gewebebandes, insbesondere eines Papiermaschinensiebes
DE9211353U1 (de) * 1992-08-24 1994-01-05 Novatech Siebe & Tech Halterung für das Webblatt einer Nahtwebmaschine
DE9215427U1 (de) * 1992-11-12 1994-04-07 Novatech Siebe & Tech Nahtwebmaschine zum Endlosmachen eines Kunststoffgewebes mit einer unterhalb des Webfaches angeordneten Jacquardmaschine
DE9215440U1 (de) * 1992-11-12 1994-04-07 Novatech Siebe & Tech Verstellbare Harnischführung für die Jacquardmaschine einer Nahtwebmaschine
DE9215498U1 (de) * 1992-11-13 1994-03-17 Novatech Siebe & Tech Durchziehgreifer zum Eintragen eines Hilfsschußfadens in das Nahtwebfach bei einer Nahtwebmaschine
DE9301722U1 (de) * 1993-02-08 1994-06-09 Novatech Siebe & Tech Nahtwebmaschine mit Fransenfänger
US6014797A (en) * 1997-06-16 2000-01-18 Jwi Ltd. Method and apparatus for unravelling threads
SE512569C2 (sv) * 1998-08-31 2000-04-03 Texo Ab Vävmaskinsarrangemang med metod, anordning och användning samt rundvävd produkt framställd med arrangemanget
SE512568C2 (sv) * 1998-08-31 2000-04-03 Texo Ab Skaftramsvävmaskin med varptrådsuppsättningar i två skikt samt två varptrådsuppsättningar i vändvecksskikt
SE512567C2 (sv) * 1998-08-31 2000-04-03 Texo Ab Styrarrangemang vid skaftramsvävmaskin eller vävmaskinsarrangemang innefattande sådan maskin
DE20105091U1 (de) 2001-03-23 2002-09-05 Wangner Finckh Gmbh & Co Kg Spannzange für Nahtwebmaschinen
DE10330958A1 (de) * 2003-07-08 2005-02-03 Wangner Finckh Gmbh & Co. Kg Vorrichtung und Verfahren zum Entfernen einer Mehrzahl parallel verlaufender Fäden aus einem Gewebe
DE202004004490U1 (de) * 2004-03-19 2004-05-27 Wangner Gmbh & Co. Kg Platine für den Separator einer Nahtwebmaschine
DE202005018856U1 (de) * 2005-12-01 2007-04-12 Wangner Gmbh & Co Kg Halterung für das Webblatt einer Nahtwebmaschine, um den Nahtschussfaden wahlweise mittels Schrägstellung der Riete oder verfahrbarer Rolle einzuwälzen
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FR952973A (fr) * 1947-08-25 1949-11-28 Procédé d'obtention d'une courroie sans fin, tissée
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DE3025909C2 (de) * 1980-07-09 1983-07-14 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Verfahren und Vorrichtung zum Herstellen einer Webnaht zwischen zwei Gewebeenden
US4557025A (en) * 1982-08-20 1985-12-10 Scapa-Porritt Limited Automatic seaming machine

Also Published As

Publication number Publication date
ATE56490T1 (de) 1990-09-15
EP0236601A1 (fr) 1987-09-16
DE3674192D1 (de) 1990-10-18
EP0236601B1 (fr) 1990-09-12

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