EP1684575A1 - Procede et dispositif de fixation et de rupture de noeuds sur les cordes d'un filet - Google Patents

Procede et dispositif de fixation et de rupture de noeuds sur les cordes d'un filet

Info

Publication number
EP1684575A1
EP1684575A1 EP04791874A EP04791874A EP1684575A1 EP 1684575 A1 EP1684575 A1 EP 1684575A1 EP 04791874 A EP04791874 A EP 04791874A EP 04791874 A EP04791874 A EP 04791874A EP 1684575 A1 EP1684575 A1 EP 1684575A1
Authority
EP
European Patent Office
Prior art keywords
rope
mounting
net
mesh
knots
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.)
Withdrawn
Application number
EP04791874A
Other languages
German (de)
English (en)
Inventor
Bjorn Halldorsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority claimed from PCT/IS2004/000017 external-priority patent/WO2005039283A1/fr
Publication of EP1684575A1 publication Critical patent/EP1684575A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure

Definitions

  • the present invention relates to devices for tightening mounting-line knots prior to discharging as well as releasing nets from net ropes and a method thereof.
  • the device makes it possible to determine how tightly the knot is fastened as the net is mounted onto net ropes using a mounting-line, ensuring that the net will not slide on the net ropes during discharging of the net.
  • a cutting means can be provided on or adjacent to the device to release the nets from the rope.
  • WO 03/061374 Al discloses nets for fishing, a discharge system and a method, which employs a mounting-line to mount nets equally onto net-ropes of fishing nets, in order to maintain the right mesh openings in the nets and to prevent the sliding of the knots in the water during fishing. This prevents the nets from sliding sideways on the ropes and thereby reducing their fishing capabilities.
  • the mounting-line ensures that the proper distance between the fastening means on the net will be constantly maintained, as the fastening mean is usually a self- tightening knot. The tightening of the knots around the net ropes in water is ensured due to the upward buoyancy of a floating rope against the downward pull of a sinking rope.
  • the mounting-line also ensures that the knots are pulled off the discharging device simultaneously to a net-rope, which is being pulled by mounting-line attached to the net-rope's front end. This secures a proper distance between the knots, which are constantly being tightened by forces acting in opposite directions in the water, whereas traditional net knots tend to become loose on the net-rope under similar circumstances.
  • the aim of the present invention is to remedy and eliminate the drawbacks of prior art methods of mounting nets onto ropes by implementing a device at the mounting site allowing tightening of mounting-line knots during mounting.
  • the device and the method of the invention also provide breaking and removing knots from a rope.
  • the invention in a first aspect relates to a device for securing pre-knitted knots of a net onto a rope, wherein said net has a plurality longitudinally arranged side mesh structures, and a rope arranged alongside said plurality of side mesh structures and further a mounting line repetitively forming a knotted loop around said rope and in-between each knot said mounting line entering through at least one side mesh structure of said net and thereby forming a mounting-mesh.
  • the mounting mesh has at least two mounting mesh bars, wherein said knot is secured to the rope by force pulling means applying pulling force onto said loop or mesh.
  • a method for securing pre-knitted knots of a net onto a rope, wherein the net has a plurality longitudinally arranged side mesh structures, and a rope arranged alongside said plurality of side mesh structures, and further a mounting line repetitively forming a knotted loop around said rope and in-between each knot said mounting line entering through at least one side mesh structure of said net and thereby forming a mounting-mesh.
  • the mounting mesh has at least two mounting mesh bars, wherein said knot is secured to the rope by means of applying pulling force onto said mounting loop or mesh.
  • the device of the present invention comprises a force pulling means, which is a device for tightening a knot around a rope or to break a knot from a rope.
  • the force pulling means is used in combination with a discharge device or a mounting device as nets are mounted onto ropes for tightening knots around the ropes.
  • the force pulling means may also be used for separating nets from ropes.
  • the force pulling means comprises a narrow first end in order to guide a loop or a mesh onto the device.
  • the structure of the force pulling means is generally a narrow end onto which the loop or mesh is guided and an outwardly extending structure thereafter, resulting in an increased diameter of the device. It is the increased diameter or circumference of the device, which applies pulling force onto the loop or mounting mesh.
  • the rope penetrates a hollow force pulling means.
  • the force pulling means may comprise a split and as the loop or the mesh is placed securely on the front end of the device the knot of the mounting mesh is guided towards a split, which is arranged along the length of the device.
  • the aft end of the device increases in diameter in order to put tension or force onto the mounting mesh.
  • the force pulling means of the invention may be referred to as a mesh stretcher.
  • knots of the invention are self-tightening knots, which are tied loosely around a mounting device and may be tightened or fastened around the rope prior to using the net.
  • breaking refers to breaking knots or mesh bars on ropes.
  • the breaking may refer to tearing, ripping, jagging, splitting, shredding, punctuating or rasping.
  • knot refers to traditional knots as well as self- tightening mounting knots that are knitted around the discharging device prior to mounting a net onto ropes.
  • the knot forms a "loop" as the mounting-line penetrates a side mesh bar and forms loop around the mounting device or the rope, as a self tightening knot such as a clove hitch is knitted around the mounting device or the rope, and after encircling the device or the rope it is knitted together closing the loop in a knot from there penetrating another of the side mesh bars of the net.
  • the bars of the loop connect in a knot of the mounting mesh.
  • a knot is formed around and on top of the rope or device before being knitted and closing the loop.
  • the knots or loops are placed around the rope as the rope is mounted off the discharge device and will be loose until tightened by a pulling force.
  • the self- tightening knots can be clove hitch, reversed clove hitch, a clove hitch with an extra noose or any other self-tightening knots.
  • the ropes may be net ropes for nets to be mounted on.
  • the term "net rope” refers to top ropes and bottom ropes wherein the top rope is a floating rope, being a rope that is equipped with floating devices inserted or attached to it.
  • the bottom rope is in the present context a sinking rope.
  • the sinking rope is made from lead, steal or any other heavy flexible material, but it could also be a rope with heavy objects attached to it.
  • mounting-line relates to a line that is fastened to a net's mounting mesh-bar.
  • the mounting line should, together with the knots, correspond to the length of the net rope, which the net is to be mounted on.
  • the mounting-line can be made from natural and/or synthetic material or any combination thereof, such as polypropylene, nylon, etc.
  • the mounting-line can be of a diameter corresponding to the diameter of the mesh bar of the net, preferably less than 10 mm, more preferred less than 5 mm in diameter and most preferred less than 1 mm in diameter.
  • the basic cell of a selected portion of a net system is a mesh cell.
  • the net system referred to herein are constructed by repeating the shape of the basic mesh cell.
  • a further definition of the net systems discussed herein is as follows:
  • a mesh is one of the openings between threads, ropes or cords of a net.
  • a mesh cell defines the sides of a mesh and includes at least three sides and associated knots or equivalent couplers oriented in space.
  • a quadratic mesh cell has four sides with four knots or couplers, and is usually arranged to form a parallelogram, which may be rectangular or square where a diamond- shaped net mesh is preferred.
  • the term mesh bar defines the sides of a mesh cell, i.e.
  • the term “mounting-mesh” relates to a mesh formed by a number of mesh bars, which are connected to a net rope by fastening means.
  • a mounting mesh can further be formed by a mounting line penetrating a row of net meshes, wherein the mounting line penetrates one of the net meshes and then encircles the mounting-device to form a loop around the mounting-device through a knot and thereafter penetrating an adjacent net mesh.
  • the term “mounting-mesh bar” relates to a mesh bar of a mounting-mesh, formed by a thread between two knots of a net mesh or the mounting-line.
  • the net-system to be secured to or broken from a rope may be attached to ropes by components such as, but not limited to knots, loops, meshes or mounting meshes.
  • the term "mounting-line,” relates to a line that is attached to a net's mounting mesh-bar.
  • the length of the mounting line should, together with the knots, correspond to the length of the net rope, which the net is to be mounted on.
  • the mounting line is pre-attached to the net's mesh-bar at certain distances, so the length of the mounting line and the distance between the fastening points of the mounting-line on the net, will in combination determine the opening of the net meshes during fishing.
  • the knots of the mounting line are at lest two, placed on opposite ends of the net rope, and preferably additional 3 or more knots placed between the two end knots and the distance between the knots.
  • the term "pulling force” relates to the force applied to a loop or a mounting mesh as it is guided along a force pulling means depending on the larger diameter of the force pulling means.
  • the nets are mounted onto ropes using a discharge system comprising a mounting device or a discharge device, adapted to carry net(s) and a mounting line.
  • the discharge device is designed in a way to receive a net rope and at the other end it allows the net, together with the top rope, to slide off the device.
  • the discharge device may be a hollow structure, such as, but not limited to a pipe, with a diameter allowing a rope to penetrate.
  • the device of the present invention may be used for securing as well as breaking knots from ropes.
  • the force pulling means of the present invention may comprise a partly conical structure, wherein the diameter of the larger end of the conical structure corresponds to the force to be pulled through the mounting mesh in order to tighten the knots securely to the rope.
  • the securing is performed via a guiding line, which penetrates all mounting meshes of a net.
  • the first end of the guiding line fastened at the aft end of a mounting device, and the second end of the guiding line is attached to the force pulling means wherein the section of the force pulling means comprising the larger diameter is directed in the discharging direction.
  • guiding line refers to a line, which penetrates the loops, meshes or mounting-meshes of the net, and directs them onto the force pulling means as the net is pulled of a mounting device.
  • the use of the force pulling means to break knots on ropes involves guiding loops or meshes over the force pulling means.
  • the knots or mesh bars are directed towards the split, which allows the loops or meshes knitted around the rope to slide along the device as the rope is being pulled through the device.
  • a cutting means may be located in or adjacent to the split, which cuts the mounting mesh bar or one bar of the loop close to the rope.
  • the knot can also be broken by tearing the mesh bar by setting the diameter of the force pulling means larger than the larger diameter of the mounting mesh or loop.
  • the method of the present invention is provided for securing pre-knitted knots of a net onto or breaking knitted knots from a rope.
  • the method discloses how knots may be tightened to a rope by pulling the rope through the force pulling means by means of a guiding line.
  • the guiding line penetrates the mounting meshes of the net and is attached to the force pulling means by a connector.
  • the guiding line guides the mounting meshes onto the front section of the force pulling means and guides the rope further along the front section and through the middle and aft section of the device.
  • the mounting mesh or loop is directed towards and along the device as the rope is pulled through the device with an increasing outer diameter. As the mounting meshes are pulled over the aft section of the device, the outwardly extending section of the force pulling means stretches the mounting mesh applying force on the knots and they are tightened around the rope.
  • the method breaking the knots from a rope includes pulling the rope through a hollow force pulling means.
  • the net meshes or loops are guided onto the front section of the force pulling means, and the rope is guided along the front section and through the hollow middle and aft section of the device.
  • the rope is pulled through the device as the loops or mounting meshes are directed towards and along the split.
  • the outwardly extending section of the force pulling means stretches the mounting mesh applying force on the loops or mesh bars, and they are stretched until they punctuate from the force placed on them or they are cut by cutting means in or adjacent to the split of the force pulling means.
  • the cutting means of the present invention may be a knife or a blade implemented in the split or adjacent to the force pulling means so that when the loop or mounting mesh is guided along the device, it will be cut.
  • the cutting means will be placed in a position where a certain stretching of the loop or mesh has been reached.
  • Figure 1 shows a net with a plurality of net meshes (5) being un-mounted of a pipe (1).
  • the rope (2) penetrates the pipe and as the front end of the mounting line (3) is attached to the front end of the rope of the mounting line, the mounting line pulls the net and the loops (11) of the mounting line of the pipe.
  • the guiding line (7) penetrates the loops (11), above the mounting mesh knot. As the mounting mesh (6) and the loop pass the force pulling means (8) the self- tightening knot (4) is tightened around the rope.
  • FIG. 2 shows in detail the construction of the mounting mesh (6).
  • the first row of side net mesh bars (9) forms a mounting mesh (6) as the mounting line (3) penetrates a side net mesh (5) and through a mounting mesh knot forms a loop (11) with a self tightening knot (4) around the rope.
  • Figure 3 shows knot tightening using a force pulling means (8) having a longitudinal member and two outwardly extending members forming an extension equal to the force to be pulled through said mounting mesh.
  • the guiding line (7) is connected to the front end (longitudinal member) of the device, the guiding line penetrating all the loops (11) of the mounting line (3).
  • the outwardly extending shape of the force pulling means (8) applies pressure on the self-tightening knots (4) and the self-tightening knots (4) will be tightened around the rope.
  • the figure further discloses a pre-setter (12), which pre-tightens the knot to the rope as it is mounted off the discharging device.
  • the arrow above the figure shows the mounting directions.
  • Figure 4 shows two variants of a force pulling means (8).
  • a funnel shaped force- pulling means (8) is shown in fig. 4a comprising a front end with a gutter shaped structure.
  • the middle and aft sections of the device are hollow comprising a straight split extending along the middle and aft sections of the device directly in the mounting direction opening out at the end of the device.
  • the force pulling means (8) of fig 4b is conical, also comprising a front end with a gutter shaped structure.
  • the split of the device in fig 4b is divided and extends in a spiral along the device until it opens out at the end of the device.
  • the force pulling device has a conical shape.
  • the width of the broader end can be regulated according to how much a knot should be tightened.
  • force pulling means has at least partly a conical shape, comprising an outer diameter equal to the force to be pulled through said loops or meshes via a guiding line.
  • the guiding line is of approximately the same length as a mounting-device and the force pulling means is attached to the guiding-line by a connector.
  • the connector may comprise a hook, a loop or a lock of any kind.
  • the conically shaped part of the device is adjustable, by altering the length or the angle of the conically shaped part.
  • the force pulling means has the shape of a funnel.
  • the force pulling means comprises two longitudinal members or pins, which are connected to the guiding line on one end.
  • the two members extend in the mounting direction, and a pulling device such as a wheel is placed between the wheels applying pulling force onto the loop or mesh.
  • the force pulling means comprises a longitudinal member or a pin, which is connected to the guiding line on one end and has at least two outwardly extending members forming an extension equal to the force to be pulled through said loops or mounting meshes.
  • the outwardly extending members can be two, thereby the device has the shape of the letter "Y".
  • the angle between the at least two outwardly extending members and the length of said members determines the pulling force applied to the loops or meshes.
  • Such a device is adjustable by regulating the angle of the outwardly extending members or by adjusting the length of the outwardly extending members. Both measures will result in an increase of the larger diameter of the device and therefore increase the pulling force applied to the mesh or loop.
  • the pulling force is supplied by at least partly conically shaped device, being pulled through said mounting mesh via a guiding line.
  • a method to discharge pre- mounted and knitted nets comprises the following steps: Net(s) are mounted and webbed onto mounting devices, allowing the net ropes to penetrate the said mounting device.
  • a mounting-line is attached to at least two net mesh-cells or mounting mesh-cells at certain distances forming mounting meshes and said mounting-line corresponds to the length of the net ropes.
  • the front ends of each mounting-line and net rope are attached together after the front ends of the net ropes have penetrated through the pipes.
  • the mounting-line is attached to the pipe with reversed cfove hitches.
  • a guiding line is attached to the support of the mounting device and penetrating all the mounting mesh bars and is thereafter connected to a force pulling means having the shape of the letter "Y".
  • the pre-mounted and knitted net(s) are mounted of a mounting device by pulling the net-ropes and therefore the mounting-lines as well.
  • the reversed clove hitches are pulled off the discharge device and onto the rope and it is during the un-mounting, by means of the force pulling means that the knots are pre-tightened around the rope and further tightened during towing the net(s) through water.
  • the aft end of the mounting-line is finally attached to the aft end of the net rope when the whole net rope has penetrated the pipe.
  • the discharge device of the present invention may be a pipe or a pipe shaped object. It may be a hollow, but not the enclosed pipe having the cross section of the sign omega ( ⁇ ).
  • the knots, that are knitted around the net rope are self-tightening knots, which will be tightened around the net ropes by forces of the upwards buoyancy of the top rope and the downwards pulling of the bottom rope.
  • the self-tightening knot knitted on top of the rope is a reversed clove hitch with an extra noose, which will be tightened during un-mounting of the net(s).
  • the knot is tightened in the water as the knot around the floating rope is pulled by the weight of the net and the sinking rope as well as the buoyancy in the water.
  • the knots of the invention are knitted around the ropes are self-tightening knots, which will be tightened around the net ropes by forces of the upwards buoyancy of the top rope and the downwards pulling of the bottom rope.
  • the self-tightening knot may be knitted on top of the rope is a reversed clove hitch with an extra noose, which will be tightened during unmounting of the net(s).
  • the knot is tightened in the water as the knot around the floating rope is pulled by the weight of the net and the sinking rope as well as the buoyancy in the water.
  • the front section of said force pulling means comprising a gutter shaped structure, which may comprise a pointed end to facilitate threading of mounting meshes onto the device.
  • the middle section comprises a hollow pipe structure, having an equal diameter (pipe shaped) or outwardly extending.
  • the aft section comprises an outwardly extending section, further comprising a split extending through the middle section and along the outwardly extending section of the device.
  • the outer diameter of the outwardly extending section of the force pulling means may be adjustable in order to regulate the stretching of the mounting meshes.
  • the force pulling means comprises a split along the length of the device, from the end of the end gutter shaped front section and along the middle and aft section of the device.
  • the split of the device may be straight as shown in figure 4a or is divided and extends in a spiral along the device until it opens out at the end of the device as shown in fig 4b.
  • the force pulling means may be attached to the guiding-line by a connector.
  • the connector may be any means for attaching a line to such as a ring.
  • the device is a combination of a small wheel adjacent to a larger wheel forming a brace, which holds the net in a steady position.
  • the rope is guided to an upwardly extending edge of the larger wheel, pulling the net rope from the net and thereby tightening the knot.
  • the pulling force is through the mounting mesh or the loop of the self-tightening knot.
  • the device may also be used for breaking the knot bay placing a cutting means adjacent to the wheels, cutting the mesh or the loop prior to guiding the rope to the upwardly extending edge of the larger wheel. As the rope is pulled away from the net, and one bar of the knot or mesh is cut, the knot will roll off the rope.
  • a method for tightening knots to a rope by pulling the loops or meshes through a force pulling means.
  • the force pulling means may be placed in front of the mounting device so that the narrow end of the force pulling means is facing the mounting device.
  • a guiding line penetrates all the loops or mounting meshes of the net and guides the loops or meshes onto the front section and through the middle and aft section.
  • the knots or mounting mesh bars are thereafter directed towards and along the split of the device and the loops or meshes are pulled over the aft section.
  • the outwardly extending section of the force pulling means stretches the loop or meshes applying force on the knots.
  • a method for breaking knots from a rope by pulling the loops or meshes through the force pulling means.
  • the force pulling means may be placed in front of the mounting device so that the narrow end of the force pulling means is facing the mounting device.
  • a funnel shaped device comprising a gutter shaped front end receives the rope through the frond end so the rope is guided into the funnel and the loops or meshes are guided onto the front section.
  • the rope is guided through the middle and aft section and as the knot or mounting mesh bars are pulled towards the middle section they are guided towards and along the split pulling the loops or meshes along the aft section.
  • the outwardly extending section of the force pulling means stretches the loops or meshes and the knots are broken.
  • the knots are broken by force applied on the mounting loops or meshes, until the loop or mesh bars are punctuated.
  • the knots may also be broken by a cutting means in or adjacent to the split of the force pulling means.
  • the pulling force may be supplied by at least partly conically shaped device, being pulled through said mounting mesh or loops via a guiding line.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)

Abstract

La présente invention porte sur un procédé et sur des dispositifs de serrage de noeuds de lignes de montage avant leur déchargement, et sur le dégagement des cordes. Le dispositif permet de déterminer la manière dont le noeud est solidement serré lorsque le filet est monté sur les cordes à l'aide d'une ligne de montage, et de s'assurer que le filet ne glissera pas sur les cordes pendant son déchargement. Un cutter peut être ménagé sur ou à côté du dispositif pour dégager les filets de la corde.
EP04791874A 2003-10-28 2004-10-28 Procede et dispositif de fixation et de rupture de noeuds sur les cordes d'un filet Withdrawn EP1684575A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IS700203 2003-10-28
PCT/IS2004/000017 WO2005039283A1 (fr) 2003-10-28 2004-10-28 Procede et dispositif de fixation et de rupture de noeuds sur les cordes d'un filet

Publications (1)

Publication Number Publication Date
EP1684575A1 true EP1684575A1 (fr) 2006-08-02

Family

ID=34509347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04791874A Withdrawn EP1684575A1 (fr) 2003-10-28 2004-10-28 Procede et dispositif de fixation et de rupture de noeuds sur les cordes d'un filet

Country Status (1)

Country Link
EP (1) EP1684575A1 (fr)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005039283A1 *

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