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
  • A01K91/00—Lines
  • A01K91/18—Trotlines, longlines; Accessories therefor, e.g. baiting devices, lifters or setting reelers

Definitions

• the invention relates to a longline fishing device.
• the invention also relates to a pulley and a drive mechanism intended in particular to equip this fishing device.
• a longline is a device comprising a main line, to which are distributedly distributed, a certain number of individual lines each provided at their end with a hook.
• Traditional longline fishing consists of submerging such a line over a long length, then lifting it out of the water by collecting the caught fish.
• There is a known fishing device comprising a longline, the main line of which is closed on itself - or longline in a loop.
• the device further comprises a carriage rolling at the bottom of the sea substantially perpendicular to the fishing boat. This carriage carries uprights emerging on the surface of the sea and by which it is pushed by the boat.
• the longline loop is driven like a belt between the boat and the underwater cart. This device allows you to continuous longline fishing. However, it has many disadvantages.
• the trolley is a complex and heavy device subject to numerous damages. Fishing with this device can only be carried out in locations where the depths are reduced.
• the developed length of the longline is very small, so that the time of immersion of the hooks in each cycle is reduced, and, at a given time, the fishing is interested only a very short distance from the seabed .
• the advantages that are sought when fishing with longlines are to fish with a large number of hooks simultaneously and over a distance of up to several kilometers.
• the object of the invention is to remedy these drawbacks by producing a continuous longline fishing device which is simple, reliable, and which allows the prolonged, simultaneous immersion of a large number of hooks distributed over a distance. appreciable sea.
• the invention thus relates to a continuous longline fishing device, this longline comprising a main line to which are fixed in a distributed manner, hook-carrying lines, the device further comprising means carried by a boat intended to ensure the longline scroll.
• this device is characterized in that it further comprises an underwater vehicle intended to be towed by the boat via the longline, this vehicle comprising means for slowing its advance in the water .
• the device will also include at least one return pulley for the longline. So the developed length of the hoist Gre can be as large as you want and, thanks to the invention, the longline loop fishing offers the same advantages as traditional longline fishing in terms of the immersion time of the hooks and the number submerged hooks.
• the underwater vehicle being independent of the boat, fishing can be carried out in all the usual depths within the framework of longline fishing.
• the pulley for suspension conveyor intended in particular to guide and possibly drive a longline forming part of a device of the aforementioned kind, is characterized in that it comprises two half-pulleys separated by a gap perpendicular to the axis of this pulley, this gap being of thickness less than the diameter of the conveyor cable, and at least equal to the diameter of the suspension wires.
• the cable is supported by the groove defined by the two half-pulleys, while the suspension wires, such as the hook line in the case of a longline, pass between the two half-pulleys, so that the object hanging on the wires such as the fish that has bitten the hook passes under the pulley without being damaged by the latter.
• the drive device for a conveyor by suspension intended in particular to drive the longline of the above-mentioned fishing device, is characterized in that it comprises two drums with substantially parallel axes, these drums being fitted at least around their periphery with an elastomer tread, one of these drums being coupled to a motor, the two drums being intended to pinch the conveyor cable between their treads, and to drive the latter by the resulting grip.
• the drums pinch the cable and the part of the suspension wires adjacent to the cable.
• the free end of the suspension wires, to which the transported object such as the caught fish is hung passes below the drums.
• Figures 1 to 4 are schematic side elevational views of four embodiments of the invention.
• Figures 5 and 6 are schematic side elevational views showing two uses of the device of Figure 4 for tuna fishing;
• Figure 7 is a plan view of the device of Figure 6;
• Figure 8 is a plan view of another use of the device according to the invention.
• Figure 9 is a plan view of the device according to the invention, mounted on a catamaran type boat;
• Figure 10 is a perspective view of the guide means of the longline;
• Figure 11 is a front end view of a longline drive pulley;
• Figure 12 is a schematic front view of a boat fitted with another longline drive device
• Figure 13 is a view similar to Figure 12, but more detailed, the ta ⁇ bours being loose;
• Figure 14 is a side view of one of the drums.
• the fishing device 1 is in service on a fishing boat.
• the fishing device 1 comprises a longline formed by a main line 3 to which are fixed in a distributed manner, for example every six meters, hook-carrying lines 4 by one of their ends.
• the other end of the hook lines 4 carries a hook 6.
• several sizes of hooks 6 are distributed along the line 3.
• the longline thus formed is closed on itself so as to constitute a longline in loop.
• the boat 2 carries means 7 such as a driving pulley for guiding and driving the longline in a movement similar to that of a belt; Such means will be described in detail later.
• the device 1 further comprises an underwater vehicle 8 rotatably carrying a pulley 9 for returning the longline. In service, it is therefore mounted in the manner of a belt on the means 7 and the return pulley 9.
• the machine 8 is intended to be pulled by boat 2 via longline.
• the underwater vehicle 8 comprises means 11 for braking its advance in the water 12.
• the vehicle 8 is a sled which rests on the bottom 13 of the sea, and the means for braking its advances in the water residing in its bottom It which rubs against the bottom 13 of the sea when the boat 2 pulls it.
• the direction of rotation of the longline around the pulleys 7 and 9 represented by the arrows F is such that the part of the loop which descends from the boat 2 towards the bottom 13 is the anterior part thereof, c 'is to say that which is closest to the front of the boat 2.
• the pulley 9 is associated with braking means which allow its rotation only with the production of a certain effort to overcome their passive resistance.
• the rising part of the longline loop is taut, between the pulleys 9 and 7.
• the descending part of the loop is loose and rests partly on the bottom of the water 13.
• the speed provided by the pulley 7 for running the longline is such that the part of the longline resting at the bottom of the water is immobile on this bottom.
• each hook line 4 is composed of several sections attached to each other to vary its length.
• Luminous or sound lures can be fixed to the lines 3,4 or to the hooks to attract fish and other animals.
• the device which has just been described operates as follows:
• the device described above is particularly advantageous since each part of the longline targets different categories of marine animals.
• An almost fixed hook fishing is thus carried out simultaneously when the hooks are lowered, bottom fishing with a view to catching molluscs and bottom fish, and trolling in the phase of raising the hooks.
• the staff of boat 2 can assess which are the predominant species in a given area, and call by radio boats specially equipped for fishing for these species.
• the device can be easily adapted to a common type boat, even a small one.
• FIG. 2 is similar to that of FIG. 1, but attempts have been made to avoid the use of a machine rubbing against the bottom of the sea.
• the sled 8 is replaced by a machine 28 carrying like the sled. 8 a return pulley 9, but intended to float between two waters.
• the machine 28 comprises a frame 29 for the pulley 9.
• the frame 29 is substantially horizontal and directed opposite the boat 2 and carries a deflector 31. intended to slow down the advance of the machine 28 in the water.
• the deflector 31, which is conical, is fixed to the frame 29 by its top. Braking means of the pulley
• the machine 28 is connected by a cable 32 to a surface float 33 on which is mounted a winch 35 for the cable 32.
• the float further carries an antenna 34 for radio control of the winch 35, and which cooperates with an antenna 36 installed on the boat 2 for transmission to the antenna 34.
• the machine 28 also carries means for adjusting the lateral orientation of the deflector 31, so as to possibly allow a certain drift of the machine 28 , in other words allow it to move away from the wake of the boat 2.
• These deflector orientation means 31 can equal ment be controlled by radio.
• the operation of the device is analogous to that of FIG. 1 as regards the running of the longline.
• the winch 35 can be controlled by radio so that the part of the longline going from the gear 28 to the boat 2 evolves to the most fishy depth.
• the fishing then involves a wide strip of sea instead of being limited to a narrow strip in the wake of the ship.
• Figure 3 is similar to that of Figure 2, except that the machine 28 carries two pulleys. 9, mounted in series.
• the distance of the return pulleys 9 is adjustable, the adjustment means possibly comprising a radio-controlled motor.
• the deflector 31 is produced in the form of a dihedron whose generators are, in service, substantially vertical. This deflector 31 can also be orientable laterally.
• the float 33 is connected by a cable 37 to the top of a mast 38 carried by the boat 2.
• the cable 37 carries signal balls 39 from time to time.
• the device of FIG. 3 makes it possible to fish very close to the surface by means of the part of the longline returning towards the boat 2 without the part of the longline which must rest on the bottom 13 lifting too early at arrival of the machine 28.
• the device of FIG. 4 comprises guide means for the longline when it leaves the boat 2.
• These guide means which comprise two pulleys 41 of parallel axes and having a common mount 42, sounds suspended from the boat 2 by means of 'a rope 43. This is engaged on a pulley 44 rotatably mounted at the end of a bowsprit 46.
• the length of the rope 43 between the pulley 44 and the pulleys 41 is adjustable from the boat 2 by acting on the end of the rope 43 which is brought there.
• the longline is trapped between the two pulleys 41 and the frame 42 which exert on the longline, due to their weight, a tension force directed obliquely downward and towards the front of the boat 2, according to arrow G (FIG. 4 ).
• the braking means of the pulley 9 are mechanical.
• the machine 28 carries a ballast 81 fixed to the end of a keel 82 directed towards the bottom 13 and slightly towards the rear.
• the ballast 81 can carry a proximity detector ensuring the servo control of the winch 35 to maintain the machine 28 at constant distance from the bottom 13.
• the device of FIG. 4 is used after having released the rotational braking of the pulley 9.
• the machine 28 is placed at such a distance from the boat 2 that all the parts of the longline are tensioned simultaneously respectively, between the boat 2 and the pulleys 41, between the pulleys 41 and the machine 28, and between the machine 28 and the boat. No part of the longline lies at the bottom.
• a longline of the kind of that of FIGS. 2 or 3 is mounted on each of the edges of the boat 2.
• the deflectors 31 are given inclined orientations relative to the wake of the boat so that the two longlines deviate from each other, each on its side from the wake of the boat 2. This use is very suitable for trawlers operating above bottom 13 prohibiting the use of the trawl.
• the device is suitable for a boat 2 of the catamaran type.
• the entry and the departure of the longline is carried out by the back of the boat.
• the longline arrives on one of the hulls 2a of the catamaran 2 and departs from the other hull 2b.
• the guide device 51 comprises a jumper 53, the central part of which carries a rotary roller 54, below which the line 3 rests.
• a pulley 56 is mounted in free rotation between the arms of the jumper 51 and supports the longline 3.
• the pulley 56 is of a type suitable for guiding the longline, but also, more generally, for guiding any cable used for conveying objects suspended from wires attached to this cable.
• this pulley 56 comprises two half-pulleys 57 separated by a plane gap 58 perpendicular to the axis of this pulley 56.
• This gap 58 is of thickness less than the diameter of the main line 3 (which constitutes the cable conveyor), but higher than that of the hook-hook lines 6 (which constitute the suspension wires).
• This pulley 56 supports the line
• the hook lines 4 pass between the two half-pulleys 57 through the gap 58, so that the hooks and any fish caught pass under the pulley 56.
• FIG. 11 shows a longline drive device, this device using a pulley 56 similar to that described above.
• the pulley 56 is carried by a jumper 61 directed substantially upwards from the axis 62 of the pulley 56.
• the axis 62 is of course produced in two half-axes 63 separated by the gap 58.
• One 64 of the jumper's arms 61 is articulated at 66 so that it can be moved away from the other jumper's arm and allow the establishment of line 3 between the half-pulleys 57 and the jumper 61.
• the half-pulleys 57 cooperate to define the groove of the pulley 56. To this end they each have a frustoconical peripheral face 67, of conicity such that in service line 3 gets sufficiently wedged between these faces 67 so that the drive of line 3 by pulley 56 can take place.
• the half-pulleys 57 each have a gear teeth 68 on their edge of larger diameter.
• a pinion 69 with a fixed axis mounted in rotation relative to the rider 61 about an axis parallel to the axis 62 of the pulley, meshes simultaneously with the two teeth 67 above line 3.
• the pinion 69 is coupled to a motor 71 intended to ensure via the pinion 69 the drive of the line 3.
• the pinion 69 is mounted idly in the jumper 61, and the motor 71 is associated with one of the half-shafts 63. In this case, the pinion 69 is used to transmit the motor movement from one of the half-pulleys 57 to the other.
• the drive device 52 of FIG. 9 is also applicable to any type of suspension conveyor, and it is shown in more detail in FIGS. 12 to 14.
• the drums 71a, 71b are made of elastomer.
• One of these drums 71a is coupled to a motor 73.
• the other drum 71b is movable between a drive position (figure 12) in which its tread is applied against that of the first drum 71a, and a position in which it is moved away from the first drum 71a, (figure 13) to allow the engagement of line 3 between the two treads.
• the profile of the rolling band of each drum 71a or 71b is curved concave and symmetrical with respect to the median plane perpendicular to the axis of these drums.
• the motor 73 is started and the latter drives the line 3 by adhesion of the latter against the drums 71a, 71b. If a hook line 4 is present, its upper part is pinched between the drums 71a, 71b, but the hook 6 passes below these drums and remains intact, as well as the fish which it has possibly allowed to catch. .
• the contact surface between the two drums 71a, 71b is that shown at 76 in FIG. 14. This shape of the treads means that line 3 remains substantially in the middle of the drums and does not tend to escape from it, especially downwards.
• the loop can alternatively be formed between two boats, or between a central boat and two boats moving parallel to it, which can be piloted, radio controlled with speed control.
• the area swept by the lines is much larger.
• the return pulley can be designed as subject to a fixed point (bar) around which the boat will turn.
• the longline will no longer be shaped in a loop but according to a cable operating back and forth respectively on one side and the other of the boat, around a deflection pulley disposed on the boat.
• the two free ends of the cable are provided with a means of braking the advance in the water such as (11,31).
• a means of braking the advance in the water such as (11,31).
• the free ends of the longline can be raised, by means of a lifting device secured to a float, by winding up to practically ' sea level. This winding can be automated.
• the latter will be provided with a notched disc at its periphery, which will allow the branchlines and their spacing relative to the inclined axis of the pulley.
• the branchlines will be brought to this disc by ramps which may be single or double.

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• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Animal Husbandry (AREA)
• Biodiversity & Conservation Biology (AREA)
• Mechanical Means For Catching Fish (AREA)
• Processing Of Meat And Fish (AREA)
• Magnetic Resonance Imaging Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9255655

Family Applications (1)

Country Status (16)

Cited By (1)

Families Citing this family (3)

Citations (7)

• 1981
  • 1981-02-26 FR FR8103838A patent/FR2509132B1/fr not_active Expired
• 1982
  • 1982-02-06 OA OA57618A patent/OA07022A/xx unknown
  • 1982-02-17 IN IN129/DEL/82A patent/IN157601B/en unknown
  • 1982-02-22 GR GR67370A patent/GR74780B/el unknown
  • 1982-02-24 ZA ZA821199A patent/ZA821199B/xx unknown
  • 1982-02-25 NO NO820593A patent/NO820593L/no unknown
  • 1982-02-25 WO PCT/FR1982/000032 patent/WO1982002817A1/en unknown
  • 1982-02-25 DK DK82882A patent/DK82882A/da not_active Application Discontinuation
  • 1982-02-25 AU AU80907/82A patent/AU8090782A/en not_active Abandoned
  • 1982-02-25 MA MA19596A patent/MA19391A1/fr unknown
  • 1982-02-25 EP EP82440007A patent/EP0059677A1/fr not_active Withdrawn
  • 1982-02-25 NZ NZ199839A patent/NZ199839A/en unknown
  • 1982-02-26 BR BR8201020A patent/BR8201020A/pt unknown
  • 1982-02-26 ES ES509965A patent/ES8303021A1/es not_active Expired
  • 1982-02-26 JP JP57030468A patent/JPS57208935A/ja active Pending
  • 1982-02-26 PT PT74501A patent/PT74501B/pt unknown

Patent Citations (7)

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