EP0508923B1 - Anchor releasing device - Google Patents

Anchor releasing device Download PDF

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Publication number
EP0508923B1
EP0508923B1 EP92460009A EP92460009A EP0508923B1 EP 0508923 B1 EP0508923 B1 EP 0508923B1 EP 92460009 A EP92460009 A EP 92460009A EP 92460009 A EP92460009 A EP 92460009A EP 0508923 B1 EP0508923 B1 EP 0508923B1
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EP
European Patent Office
Prior art keywords
plate
anchor
edge
lateral edge
tube
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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
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EP92460009A
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German (de)
French (fr)
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EP0508923A1 (en
Inventor
Claude Piton
Jacqueline Piton
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/22—Handling or lashing of anchors

Definitions

  • the present invention relates to a sea anchor release device used to unhook an anchor hung on the bottom and allow it to be lifted.
  • a device of this type is connected, on one side, to the end of a main anchor chain moored to a boat and, on the other side, to a shackle provided at the free end of the rod of an anchor.
  • a rope also connects said device to the diamond of the anchor.
  • the main chain is connected, via said device, to the boat, which allows it to be kept in place.
  • These devices include a system which is controlled either by a cable or by a tube which can run along the main chain, and which makes it possible to secure the shackle of the device. The rope is then alone connected to the main chain and, by raising the anchor, the diamond is pulled from the anchor, which allows it to be easily released from the bottom and therefore to be raised.
  • the object of the invention is therefore to provide a device for detaching an anchor which is simple in structure, therefore inexpensive to manufacture, and which gives complete satisfaction as regards operation.
  • a release device consists of an elongated plate, one end of which is provided for receiving the last link of said main chain and the other end of which is provided with a through light and located in the axis of said plate, of a second plate superimposed on the first plate and intended to pivot relative to said first plate about an axis normal to said plates, said second plate comprising a finger which, in a first relative position of the two plates, covers an end portion of said lumen thus allowing the attachment of a shackle provided at the free end of the rod of the anchor and which, in a second relative position, uncovers said end allowing the unhooking of said shackle. It also comprises a return spring and a stop intended to keep said plates at rest in said first position.
  • Said second plate has, on the one hand, a first lateral edge which, in said first position, protrudes beyond the corresponding lateral edge of the first plate while being inclined relative to the longitudinal axis of said device, and which, in said second position is located above said first plate, and, on the other hand, the second lateral edge which is always above the first plate.
  • the first lateral edge of said second plate is brought closer to the opposite edge of said first plate by means of a tube launched from the boat and running freely on the main chain, said tube having its internal diameter substantially equal to the distance between the first edge of the second plate and the opposite edge of said first plate when said device is in said second position.
  • the tube By launching the tube on the device, it is fitted on the release device, which has the result of rotating the two plates relative to each other. The finger then releases the light and thus releases the anchor chain. The anchor can then be raised by means of the rope.
  • the manufacturing of the device of the invention is relatively simple since it is built around two easy-to-shape plates.
  • said first plate comprises, in its lower part where the lumen is located, two lateral wings whose upper edges form stops for the tube when the latter is fitted into said device.
  • the distance between the first lateral edge of the second plate and the corresponding edge of the first plate is greater, at the level of said stops, than the width of said lumen.
  • said device comprises a third plate behind the first plate and symmetrical with respect to the axis of the device.
  • a boat 1 which has dropped its anchor 2.
  • This one which can be of any type, is hung on the bottom by at least one of its arms 3.
  • From the boat leaves an anchor chain main 4 whose free end is connected to a first end of a release device 5.
  • the other end of the device 5 is connected to a shackle 6 provided at the free end of the rod 7 of the anchor 2.
  • a rope 8 connects the device 5 to the diamond 9 of the anchor 2.
  • the release device 5 shown in FIG. 1 is shown in detail in FIG. 2. It comprises a first elongated plate 10 of substantially triangular shape with a rounded top and an enlarged base to form a part with two wings 11 and 12 and in an arc. At the top of the triangle, a hole 13 is drilled for the passage of the last link of the main chain 4 (Fig. 1). On the wing 11 of the lower part of the plate 10, a hole 14 is drilled where the free end of the rope 8 is attached (Fig. 1). Significantly in the axis of the device 5 formed by the height at the base of the triangle of the first plate 10 and in its enlarged part, there is provided a light opening downwards.
  • the device 5 also includes a second plate 16 superimposed on the first and of substantially triangular shape with a rounded apex and at the base in an arc.
  • a curved finger 17 which forms a recess 18 substantially perpendicular to the axis of the lumen 15 and of width substantially equal to the width of the latter.
  • the top of the second plate is pierced with a hole provided for receiving an axis 19 normal to the surface of the second plate 16.
  • the first plate 10 is also pierced with a hole which is provided for receiving the same axis 19. That -this, for example, consists of a bolt, a rivet, a pin or any other equivalent means. It may comprise, at each of its ends, two heads (not shown) forming axial stops for each of the plates 10 and 16. Each plate 10, 16 can thus pivot relative to each other about the axis 19.
  • the position of the holes receiving the axis 19 in each of the plates 10, 16 and the dimension of these plates 10 and 16 are such that, in a first relative position of the two plates 10 and 16, the end of the finger 17 can cover the end of the lumen 15 while being perpendicular to it (as shown in Fig. 1) and leaving a free passage for the attachment of the shackle 6 (Fig. 1) and, in a second relative position, so that the end of the finger 17 can discover the end of the lumen 15 (see Fig. 4) by allowing the release of the shackle 6.
  • a stop 20 for example, formed of a rod normally mounted on the surface of the first plate 10 and an oblong hole 21 in the second plate 16 provided for receiving said stop 20.
  • the finger 17 When the rod 20 is in abutment at a first end of the oblong hole 21, the finger 17 completely covers the end of the lumen 15 and, when it is abutted at the at the other end of the hole 21, the finger 17 completely uncovers the end of the lumen 15.
  • a return spring 22 is provided so that, at rest, the plates 10 and 16 are positioned relative to one another, in a first position, called closing, in which the finger 17 completely covers the end of the light 15.
  • the spring 22 is constituted, in the embodiment shown in FIG. 2, by a flexible rod, one ring end of which surrounds the axis 19 and is in abutment, on one of its sides, against the rod 20 of the first plate 10 and, on the other side, on a stop 23 provided on the second plate 16.
  • the lateral edge 24, finger side 17, of the second plate 16 is substantially parallel to the corresponding edge 25 of the first plate 10 and that it is inside the first plate 10.
  • the lateral edge 25 of the second plate 16 side opposite to the finger 17, it is located beyond the corresponding lateral edge 27 of the first plate 10. It then forms, at rest, a part 28 of the second plate 16 which is not on the first plate 10.
  • a tube 29 is launched from the boat 1 which runs freely on the main chain 4 (FIG. 3a). By its own weight, it is forcefully fitted into the release device 5 (Fig. 3b) which, by action, on the one hand, on the inclined edge 26 of the second plate 16 and on the lateral edge 25 opposite of the first plate 10, allows the pivoting of one plate 10 or 16 relative to the other 16 or 10.
  • the tube 29 has come into abutment against the upper edges 30 and 31 of the lower part of the first plate 10 (Fig. 4)
  • finger 17 no longer covers the end of the lumen 15, thereby releasing the anchor chain 6 (Fig. 3b).
  • the tube 29 can be seen fitted into the release device 5. It can be seen that the internal diameter of the tube 29 must, for correct operation of the device 5, have an internal diameter substantially equal to the distance between the two lateral edges 25 and 27 of the first plate 10 at the upper edges 30 and 31 of the wings 11 and 12, when the device 5 is in its open position.
  • the distance between the inclined edge 26 of the second plate 16 and the corresponding edge 27 of the first plate 10 at the upper surface of the stop 30 must be, in the closed position (FIG. 2) of the device, greater than the width of the lumen 15.
  • the tube 29 when it is fitted into the device 5 allows complete clearance, by the finger 17, of the lumen 15.
  • the tube 29 must be of sufficient mass so that the kinetic energy which it acquires by running along the main chain 4 can rotate the two plates one by compared to each other when stopped on the device.
  • This mass can be between 1 and 3 Kg.
  • Fig. 5 is an alternative embodiment in which the spring 22 ′ consists of a pin bypassing (by the right in FIG. 5) the axis 19 and pressing, on the one hand, against a stop 23 formed on the second plate 10 and, on the other hand, against the rod 19 secured to the first plate 10.
  • Fig. 6 shows a second alternative embodiment in which a third plate 16 ′ identical to the second plate 16 is placed symmetrically with respect to the main vertical axis of the device 5 and this behind the first plate 10.
  • a return spring 22 ′ is also provided to return the third plate 16 ′ to its rest position.
  • the operation of this alternative embodiment is the same as that which has been previously described in relation to the device 5 of FIG. 2. Its advantage over this lies in its greater resistance to opening during pulls on the main chain 4.
  • the elements of the third plate 16 ′ have the same reference as the same elements of the second plate 16, but they are assigned a premium.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Description

La présente invention concerne un dispositif de décrochage d'ancre marine utilisé pour décrocher une ancre accrochée sur le fond et permettre son relevage.The present invention relates to a sea anchor release device used to unhook an anchor hung on the bottom and allow it to be lifted.

De tels dispositifs sont connus et on citera, à titre d'exemple, ceux qui sont décrits dans les documents FR-A-2 592 624, EP-A-254 033 et EP-A-398 740. Un dispositif de ce type est relié, d'un côté, à l'extrémité d'une chaîne d'ancre principale amarrée à un bateau et, de l'autre côté, à une manille prévue à l'extrémité libre de la verge d'une ancre. Un filin relie également ledit dispositif au diamant de l'ancre. Lorsque l'ancre est accrochée sur le fond, la chaîne principale est reliée, via ledit dispositif, au bateau, ce qui lui permet de se maintenir en place. Ces dispositifs comportent un système qui est commandé, soit par un câble, soit par un tube pouvant courir le long de la chaîne principale, et qui permet de solidariser la manille du dispositif. Le filin est alors seul relié à la chaîne principale et, en remontant l'ancre, on tire sur le diamant de l'ancre, ce qui lui permet de se dégager facilement du fond et donc d'être remontée.Such devices are known and mention will be made, by way of example, of those described in documents FR-A-2,592,624, EP-A-254,033 and EP-A-398,740. A device of this type is connected, on one side, to the end of a main anchor chain moored to a boat and, on the other side, to a shackle provided at the free end of the rod of an anchor. A rope also connects said device to the diamond of the anchor. When the anchor is hung on the bottom, the main chain is connected, via said device, to the boat, which allows it to be kept in place. These devices include a system which is controlled either by a cable or by a tube which can run along the main chain, and which makes it possible to secure the shackle of the device. The rope is then alone connected to the main chain and, by raising the anchor, the diamond is pulled from the anchor, which allows it to be easily released from the bottom and therefore to be raised.

Les dispositifs décrits dans les documents mentionnés ci-dessus comportent de nombreuses pièces agencées de manière complexe. Ils sont donc coûteux à la fabrication et cher à la commercialisation.The devices described in the documents mentioned above comprise numerous parts arranged in a complex manner. They are therefore expensive to manufacture and expensive to market.

Le but de l'invention est donc de prévoir un dispositif de décrochage d'ancre marine qui soit de structure simple, donc peu coûteux à la fabrication, et qui donne entière satisfaction quant au fonctionnement.The object of the invention is therefore to provide a device for detaching an anchor which is simple in structure, therefore inexpensive to manufacture, and which gives complete satisfaction as regards operation.

A cet effet, un dispositif de décrochage selon l'invention est constitué d'une plaque allongée dont une extrémité est prévue pour recevoir le dernier maillon de ladite chaîne principale et dont l'autre extrémité est pourvue d'une lumière débouchant et se trouvant dans l'axe de ladite plaque, d'une seconde plaque superposée à la première plaque et prévue pour pivoter par rapport à ladite première plaque autour d'un axe normal auxdites plaques, ladite seconde plaque comportant un doigt qui, dans une première position relative des deux plaques, recouvre une partie d'extrémité de ladite lumière permettant ainsi l'accrochage d'une manille prévue à l'extrémité libre de la verge de l'ancre et qui, dans une seconde position relative, découvre ladite extrémité permettant le décrochage de ladite manille. Il comprend encore un ressort de rappel et une butée prévus pour maintenir lesdites plaques au repos dans ladite première position.To this end, a release device according to the invention consists of an elongated plate, one end of which is provided for receiving the last link of said main chain and the other end of which is provided with a through light and located in the axis of said plate, of a second plate superimposed on the first plate and intended to pivot relative to said first plate about an axis normal to said plates, said second plate comprising a finger which, in a first relative position of the two plates, covers an end portion of said lumen thus allowing the attachment of a shackle provided at the free end of the rod of the anchor and which, in a second relative position, uncovers said end allowing the unhooking of said shackle. It also comprises a return spring and a stop intended to keep said plates at rest in said first position.

Ladite seconde plaque a, d'une part, un premier bord latéral qui, dans ladite première position, dépasse au delà du bord latéral correspondant de la première plaque tout en étant incliné par rapport à l'axe longitudinal dudit dispositif, et qui, dans ladite seconde position, se trouve au dessus de ladite première plaque, et, d'autre part, le second bord latéral qui est toujours au dessus de la première plaque. Le premier bord latéral de ladite seconde plaque est rapproché du bord opposé de ladite première plaque au moyen d'un tube lancé du bateau et courant librement sur la chaîne principale, ledit tube ayant son diamètre interne sensiblement égal à la distance entre le premier bord de la seconde plaque et le bord opposé de ladite première plaque lorsque ledit dispositif est dans ladite seconde position.Said second plate has, on the one hand, a first lateral edge which, in said first position, protrudes beyond the corresponding lateral edge of the first plate while being inclined relative to the longitudinal axis of said device, and which, in said second position is located above said first plate, and, on the other hand, the second lateral edge which is always above the first plate. The first lateral edge of said second plate is brought closer to the opposite edge of said first plate by means of a tube launched from the boat and running freely on the main chain, said tube having its internal diameter substantially equal to the distance between the first edge of the second plate and the opposite edge of said first plate when said device is in said second position.

Ainsi, en lançant le tube sur le dispositif, il s'emmanche sur le dispositif de décrochage, ce qui a pour résultat de faire pivoter les deux plaques l'une par rapport à l'autre. Le doigt dégage alors la lumière et libère ainsi la chaîne d'ancre. L'ancre peut alors être relevée au moyen du filin.Thus, by launching the tube on the device, it is fitted on the release device, which has the result of rotating the two plates relative to each other. The finger then releases the light and thus releases the anchor chain. The anchor can then be raised by means of the rope.

La fabrication du dispositif de l'invention est relativement simple puisqu'il est bâti autour de deux plaques faciles à mettre en forme.The manufacturing of the device of the invention is relatively simple since it is built around two easy-to-shape plates.

Selon une autre caractéristique de l'invention, ladite première plaque comporte, dans sa partie inférieure où se trouve la lumière, deux ailes latérales dont les arêtes supérieures forment des butées pour le tube lorsque celui-ci s'emmanche dans ledit dispositif.According to another characteristic of the invention, said first plate comprises, in its lower part where the lumen is located, two lateral wings whose upper edges form stops for the tube when the latter is fitted into said device.

Selon une autre caractéristique de l'invention, la distance entre le premier bord latéral de la seconde plaque et le bord correspondant de la première plaque est supérieure, au niveau desdites butées, à la largeur de ladite lumière.According to another characteristic of the invention, the distance between the first lateral edge of the second plate and the corresponding edge of the first plate is greater, at the level of said stops, than the width of said lumen.

Selon une autre caractéristique de l'invention, ledit dispositif comprend une troisième plaque derrière la première plaque et symétrique, par rapport à l'axe du dispositif.According to another characteristic of the invention, said device comprises a third plate behind the first plate and symmetrical with respect to the axis of the device.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels:

  • la Fig. 1 montre essentiellement un bateau, une ancre et un dispositif de décrochage selon l'invention,
  • la Fig. 2 est une vue de face d'un dispositif selon la présente invention,
  • les Figs. 3a et 3b sont des vues qui reprennent celles de la Fig. 1 et qui permettent d'illustrer le fonctionnement de la présente invention,
  • la Fig. 4 montre un tube emmanché dans un dispositif selon l'invention,
  • la Fig. 5 montre une première variante de réalisation comportant un ressort de rappel en épingle,
  • la Fig. 6 est une vue d'une seconde variante de réalisation d'un dispositif selon l'invention.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:
  • Fig. 1 essentially shows a boat, an anchor and a release device according to the invention,
  • Fig. 2 is a front view of a device according to the present invention,
  • Figs. 3a and 3b are views which repeat those of FIG. 1 and which make it possible to illustrate the operation of the present invention,
  • Fig. 4 shows a tube fitted into a device according to the invention,
  • Fig. 5 shows a first alternative embodiment comprising a pin return spring,
  • Fig. 6 is a view of a second alternative embodiment of a device according to the invention.

A la Fig. 1, on voit un bateau 1 qui a jeté son ancre 2. Celle-ci, qui peut être d'un type quelconque, est accrochée sur le fond par au moins un de ses bras 3. Du bateau, part une chaîne d'ancre principale 4 dont l'exrémité libre est reliée à une première extrémité d'un dispositif de décrochage 5. L'autre extrémité du dispositif 5 est reliée à une manille 6 prévue à l'extrémité libre de la verge 7 de l'ancre 2. Un filin 8 relie le dispositif 5 au diamant 9 de l'ancre 2.In Fig. 1, we see a boat 1 which has dropped its anchor 2. This one, which can be of any type, is hung on the bottom by at least one of its arms 3. From the boat, leaves an anchor chain main 4 whose free end is connected to a first end of a release device 5. The other end of the device 5 is connected to a shackle 6 provided at the free end of the rod 7 of the anchor 2. A rope 8 connects the device 5 to the diamond 9 of the anchor 2.

Le dispositif de décrochage 5 montré à la Fig. 1 est représenté en détail à la Fig. 2. Il comprend une première plaque 10 allongée de forme sensiblement triangulaire au sommet arrondi et à la base élargie pour former une partie à deux ailes 11 et 12 et en arc de cercle. Au sommet du triangle, est percé un trou 13 pour le passage du dernier maillon de la chaîne principale 4 (Fig. 1). Sur l'aile 11 de la partie inférieure de la plaque 10, est percé un trou 14 où est attaché l'extrémité libre du filin 8 (Fig. 1). Sensiblement dans l'axe du dispositif 5 formé par la hauteur à la base du triangle de la première plaque 10 et dans sa partie élargie, est prévue une lumière débouchant vers le bas.The release device 5 shown in FIG. 1 is shown in detail in FIG. 2. It comprises a first elongated plate 10 of substantially triangular shape with a rounded top and an enlarged base to form a part with two wings 11 and 12 and in an arc. At the top of the triangle, a hole 13 is drilled for the passage of the last link of the main chain 4 (Fig. 1). On the wing 11 of the lower part of the plate 10, a hole 14 is drilled where the free end of the rope 8 is attached (Fig. 1). Significantly in the axis of the device 5 formed by the height at the base of the triangle of the first plate 10 and in its enlarged part, there is provided a light opening downwards.

Le dispositif 5 comprend également une seconde plaque 16 superposée à la première et de forme sensiblement triangulaire au sommet arrondi et à la base en arc de cercle. Un côté adjacent à la base du triangle de la seconde plaque 16 est prolongé par un doigt recourbé 17 qui forme un évidement 18 sensiblement perpendiculaire à l'axe de la lumière 15 et de largeur sensiblement égale à la largeur de celle-ci.The device 5 also includes a second plate 16 superimposed on the first and of substantially triangular shape with a rounded apex and at the base in an arc. One side adjacent to the base of the triangle of the second plate 16 is extended by a curved finger 17 which forms a recess 18 substantially perpendicular to the axis of the lumen 15 and of width substantially equal to the width of the latter.

Le sommet de la seconde plaque est percé d'un trou prévu pour recevoir un axe 19 normal à la surface de la seconde plaque 16. La première plaque 10 est également percée d'un trou qui est prévu pour recevoir le même axe 19. Celui-ci est, par exemple, constitué d'un boulon, d'un rivet, d'une goupille ou tout autre moyen équivalent. Il peut comporter, à chacune de ses extrémités, deux têtes (non représentées) formant des butées axiales pour chacune des plaques 10 et 16. Chaque plaque 10, 16 peut ainsi pivoter l'une par rapport à l'autre autour de l'axe 19. La position des trous recevant l'axe 19 dans chacune des plaques 10, 16 et la dimension de ces plaques 10 et 16 sont telles que, dans une première position relative des deux plaques 10 et 16, l'extrémité du doigt 17 puisse recouvrir l'extrémité de la lumière 15 tout en étant perpendiculaire à elle (tel que cela est représenté à la Fig. 1) et en laissant libre un passage pour l'accrochage de la manille 6 (Fig. 1) et, dans une seconde position relative, pour que l'extrémité du doigt 17 puisse découvrir l'extrémité de la lumière 15 (voir Fig. 4) en permettant le décrochage de la manille 6.The top of the second plate is pierced with a hole provided for receiving an axis 19 normal to the surface of the second plate 16. The first plate 10 is also pierced with a hole which is provided for receiving the same axis 19. That -this, for example, consists of a bolt, a rivet, a pin or any other equivalent means. It may comprise, at each of its ends, two heads (not shown) forming axial stops for each of the plates 10 and 16. Each plate 10, 16 can thus pivot relative to each other about the axis 19. The position of the holes receiving the axis 19 in each of the plates 10, 16 and the dimension of these plates 10 and 16 are such that, in a first relative position of the two plates 10 and 16, the end of the finger 17 can cover the end of the lumen 15 while being perpendicular to it (as shown in Fig. 1) and leaving a free passage for the attachment of the shackle 6 (Fig. 1) and, in a second relative position, so that the end of the finger 17 can discover the end of the lumen 15 (see Fig. 4) by allowing the release of the shackle 6.

Pour limiter le mouvement angulaire des plaques 10 et 16 l'une par rapport à l'autre, on a prévu une butée 20, par exemple, formée d'une pige montée normalement à la surface de la première plaque 10 et un trou oblong 21 dans la seconde plaque 16 prévu pour recevoir ladite butée 20. Lorsque la pige 20 est en butée à une première extrémité du trou oblong 21, le doigt 17 recouvre complètement l'extrémité de la lumière 15 et, lorsqu'elle est en butée à l'autre extrémité du trou 21, le doigt 17 découvre complètement l'extrémité de la lumière 15.To limit the angular movement of the plates 10 and 16 relative to each other, there is provided a stop 20, for example, formed of a rod normally mounted on the surface of the first plate 10 and an oblong hole 21 in the second plate 16 provided for receiving said stop 20. When the rod 20 is in abutment at a first end of the oblong hole 21, the finger 17 completely covers the end of the lumen 15 and, when it is abutted at the at the other end of the hole 21, the finger 17 completely uncovers the end of the lumen 15.

Un ressort de rappel 22 est prévu pour qu'au repos, les plaques 10 et 16 soient positionnées l'une par rapport à l'autre, dans une première position, dite de fermeture, dans laquelle le doigt 17 recouvre complètement l'extrémité de la lumière 15. Le ressort 22 est constitué, dans l'exemple de réalisation montré à la Fig. 2, par une tige flexible dont une extrémité en anneau entoure l'axe 19 et est en appui, par un de ses côtés, contre la pige 20 de la première plaque 10 et, par l'autre côté, sur une butée 23 prévue sur la seconde plaque 16.A return spring 22 is provided so that, at rest, the plates 10 and 16 are positioned relative to one another, in a first position, called closing, in which the finger 17 completely covers the end of the light 15. The spring 22 is constituted, in the embodiment shown in FIG. 2, by a flexible rod, one ring end of which surrounds the axis 19 and is in abutment, on one of its sides, against the rod 20 of the first plate 10 and, on the other side, on a stop 23 provided on the second plate 16.

On remarquera, que dans cette position de repos, le bord latéral 24, côté doigt 17, de la seconde plaque 16 est sensiblement parallèle au bord 25 correspondant de la première plaque 10 et qu'il se trouve à l'intérieur de la première plaque 10. Quant au bord latéral 25 de la seconde plaque 16, côté opposé au doigt 17, il est situé au-delà du bord latéral 27 correspondant de la première plaque 10. Il se forme alors, au repos, une partie 28 de la seconde plaque 16 qui ne se trouve pas sur la première plaque 10.It will be noted that, in this rest position, the lateral edge 24, finger side 17, of the second plate 16 is substantially parallel to the corresponding edge 25 of the first plate 10 and that it is inside the first plate 10. As for the lateral edge 25 of the second plate 16, side opposite to the finger 17, it is located beyond the corresponding lateral edge 27 of the first plate 10. It then forms, at rest, a part 28 of the second plate 16 which is not on the first plate 10.

Le fonctionnement du dispositif 5 est le suivant et est illustré par les Figs. 3a et 3b et la Fig. 4. Lorsqu'on désire relever l'ancre 2, il est nécessaire de la décrocher du fond. Pour ce faire, on lance, du bateau 1, un tube 29 qui court librement sur la chaîne principale 4 (Fig. 3a). Par son propre poids, celui-ci s'emmanche avec force dans le dispositif de décrochage 5 (Fig. 3b) qui, par action, d'une part, sur le bord incliné 26 de la seconde plaque 16 et sur le bord latéral 25 opposé de la première plaque 10, permet le pivotement d'une plaque 10 ou 16 par rapport à l'autre 16 ou 10. Lorsque le tube 29 est arrivé en butée contre les bords supérieurs 30 et 31 de la partie inférieure de la première plaque 10 (Fig. 4), le doigt 17 ne recouvre plus l'extrémité de la lumière 15, libérant ainsi la chaîne d'ancre 6 (Fig. 3b).The operation of the device 5 is as follows and is illustrated by Figs. 3a and 3b and FIG. 4. When you wish to raise the anchor 2, it is necessary to unhook it from the bottom. To do this, a tube 29 is launched from the boat 1 which runs freely on the main chain 4 (FIG. 3a). By its own weight, it is forcefully fitted into the release device 5 (Fig. 3b) which, by action, on the one hand, on the inclined edge 26 of the second plate 16 and on the lateral edge 25 opposite of the first plate 10, allows the pivoting of one plate 10 or 16 relative to the other 16 or 10. When the tube 29 has come into abutment against the upper edges 30 and 31 of the lower part of the first plate 10 (Fig. 4), finger 17 no longer covers the end of the lumen 15, thereby releasing the anchor chain 6 (Fig. 3b).

Sur la Fig. 4, on voit le tube 29 emmanché dans le dispositif de décrochage 5. On constate que le diamètre intérieur du tube 29 doit être, pour un fonctionnement correct du dispositif 5, d'un diamètre interne sensiblement égal à la distance entre les deux bords latéraux 25 et 27 de la première plaque 10 au niveau des bords supérieurs 30 et 31 des ailes 11 et 12, lorsque le dispositif 5 est dans sa position d'ouverture.In Fig. 4, the tube 29 can be seen fitted into the release device 5. It can be seen that the internal diameter of the tube 29 must, for correct operation of the device 5, have an internal diameter substantially equal to the distance between the two lateral edges 25 and 27 of the first plate 10 at the upper edges 30 and 31 of the wings 11 and 12, when the device 5 is in its open position.

Par ailleurs, la distance entre le bord incliné 26 de seconde plaque 16 et le bord correspondant 27 de la première plaque 10 au niveau de la surface supérieure de la butée 30 doit être, dans la position de fermeture (Fig. 2) du dispositif, supérieure à la largeur de la lumière 15. Ainsi, le tube 29 lorsqu'il est emmanché dans le dispositif 5 permet le dégagement complet, par le doigt 17, de la lumière 15.Furthermore, the distance between the inclined edge 26 of the second plate 16 and the corresponding edge 27 of the first plate 10 at the upper surface of the stop 30 must be, in the closed position (FIG. 2) of the device, greater than the width of the lumen 15. Thus, the tube 29 when it is fitted into the device 5 allows complete clearance, by the finger 17, of the lumen 15.

On remarque enfin, Fig. 4, que les bords latéraux 24 et 26 de la seconde plaque 16 sont, dans la position d'ouverture, à l'intérieur de la première plaque 10.Finally, we notice, Fig. 4, that the lateral edges 24 and 26 of the second plate 16 are, in the open position, inside the first plate 10.

Pour un fonctionnement correct du dispositif de l'invention, le tube 29 doit être d'une masse suffisante pour que l'énergie cinétique qu'il acquiert en courant le long de la chaîne principale 4 puisse faire pivoter les deux plaques l'une par rapport à l'autre lorsqu'il est stoppé sur le dispositif. Cette masse peut être comprise entre 1 et 3 Kg.For a correct operation of the device of the invention, the tube 29 must be of sufficient mass so that the kinetic energy which it acquires by running along the main chain 4 can rotate the two plates one by compared to each other when stopped on the device. This mass can be between 1 and 3 Kg.

Une fois la chaîne d'ancre 6 libérée du dispositif de décrochage 5 (Fig. 3b), c'est au moyen du filin 8 et de la chaîne principale 4, par l'intermédiaire du dispositif 5, que l'on tire, du bateau 1, le diamant 9 de l'ancre 2. Celle-ci se décroche alors du fond et il est possible de la remonter.Once the anchor chain 6 has been released from the release device 5 (FIG. 3b), it is by means of the rope 8 and the main chain 4, via the device 5, that the boat 1, the diamond 9 of the anchor 2. The latter then unhooks from the bottom and it is possible to raise it.

La Fig. 5 est une variante de réalisation dans laquelle le ressort 22′ est constitué d'une épingle contournant (par la droite sur la Fig. 5) l'axe 19 et s'appuyant, d'une part, contre une butée 23 formée sur la seconde plaque 10 et, d'autre part, contre la pige 19 solidaire de la première plaque 10.Fig. 5 is an alternative embodiment in which the spring 22 ′ consists of a pin bypassing (by the right in FIG. 5) the axis 19 and pressing, on the one hand, against a stop 23 formed on the second plate 10 and, on the other hand, against the rod 19 secured to the first plate 10.

La Fig. 6 montre une seconde variante de réalisation dans laquelle une troisième plaque 16′ identique à la seconde plaque 16 est placée symétriquement par rapport à l'axe vertical principal du dispositif 5 et ce derrière la première plaque 10. Un ressort de rappel 22′ est également prévu pour rappeler la troisième plaque 16′ dans sa position de repos. Le fonctionnement de cette variante de réalisation est le même que celui qui a été précédemment décrit en relation avec le dispositif 5 de la Fig. 2. Son avantage sur celui-ci réside dans sa plus grande résistance à l'ouverture lors des tractions sur la chaîne principale 4.Fig. 6 shows a second alternative embodiment in which a third plate 16 ′ identical to the second plate 16 is placed symmetrically with respect to the main vertical axis of the device 5 and this behind the first plate 10. A return spring 22 ′ is also provided to return the third plate 16 ′ to its rest position. The operation of this alternative embodiment is the same as that which has been previously described in relation to the device 5 of FIG. 2. Its advantage over this lies in its greater resistance to opening during pulls on the main chain 4.

On remarquera sur la Fig. 6 que les éléments de la troisième plaque 16′ portent la même référence que les mêmes éléments de la seconde plaque 16, mais elles sont affectées d'un prime.It will be noted in FIG. 6 that the elements of the third plate 16 ′ have the same reference as the same elements of the second plate 16, but they are assigned a premium.

Claims (4)

  1. Device for unhooking a main chain (4) from the free end of the shank (7) of an anchor (2) permitting of disengaging the said anchor (2) by pulling it by means of a rope (8) connected, on the one hand, to its corwn (9) and on the other hand, to the said device, characterised in that it is consituted by an elongated plate (10) one end of which is provided for receiving the last link of the said main chain (4) and the other end of which is provided with an opening (15) leading and being located in the axis of the said plate (10), by a second plate (16) superposed on the first plate (10) and provided for pivoting relative to the said first plate (10) around an axle (19) perpendicular to the said plates (10,16) the said second plate (16) comprising a finger (17), which, in its first relative position of the two plates (10,16) covers an end part of the said opening (15) thus permitting the hooking on of a shackle (6) provided at the free end of the shank (7) of the anchor (2) and which, in a second relative position, uncovers the said end permitting the unhooking of the said shackle (6), a return-spring (22) and a stop (20) provided to keep the said plates (10 and 16) at rest in the said first position, the said second plate (16) having a first lateral edge (26), which, in the said first position goes beyond the corresponding lateral edge (27) of the first plate (10) whilst being inclined relative to the longitudinal axis of the said device and which, in the said second position is located above the said first plate (10) and the second lateral edge (24) which is always above the first plate (10), the first lateral edge (26) of the said second plate (16) being brought near to the opposite edge (25) of the said first plate (10) by means of a tube (29) cast from the boat and running freely on the main chain (4), the said tube (29) having its inner diameter equal to the distance between the first edge (26) of the second plate (16) and the opposite edge (25) of the said first plate (10) when the said device is in the said second open position.
  2. Device according to claim 1, characterised in that the said first plate (10) comprises, in its lower part where the opening (15) is located, two lateral wings (11 and 12) the upper edges (30 and 31) of which form stops for the tube (29) when the latter fits into the said device.
  3. Device according to claim 1 or 2, characterised in that the distance between the first lateral edge (26) of the second plate (16) and the corresponding edge (27) of the first plate (10) is greater, at the level of the said stops (30 and 31) than the width of the said opening (15).
  4. Device according to one of the preceding claims, characterised in that it comprises a third plate (16') behind the first plate (10) and symmetrical in relation to the axis of the device.
EP92460009A 1991-04-08 1992-04-01 Anchor releasing device Expired - Lifetime EP0508923B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104396A FR2674814B1 (en) 1991-04-08 1991-04-08 ANCHOR LOCKING DEVICE.
FR9104396 1991-04-08

Publications (2)

Publication Number Publication Date
EP0508923A1 EP0508923A1 (en) 1992-10-14
EP0508923B1 true EP0508923B1 (en) 1995-01-25

Family

ID=9411699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92460009A Expired - Lifetime EP0508923B1 (en) 1991-04-08 1992-04-01 Anchor releasing device

Country Status (5)

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US (1) US5207775A (en)
EP (1) EP0508923B1 (en)
AU (1) AU649127B2 (en)
ES (1) ES2068018T3 (en)
FR (1) FR2674814B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784981A (en) * 1996-09-17 1998-07-28 Graham, Sr.; Leonard R. V-shaped retrievable anchor
GB2343667B (en) * 1998-09-03 2002-06-19 John Stephen Baross Rigging systems and devices enabling suction anchors to be recovered after use
AUPP639898A0 (en) 1998-10-08 1998-10-29 Powell, Peter Geoffrey An improved anchor connection
US20100326344A1 (en) * 2009-06-26 2010-12-30 Peter Michael Weinstein Anchor retrieval device, system and method
US8485117B2 (en) * 2008-07-29 2013-07-16 Peter Michael Weinstein Anchor retrieval device, system and method
US7886681B2 (en) * 2008-07-29 2011-02-15 Peter Michael Weinstein Anchor retrieval device, system and method
ES2378105B1 (en) * 2009-12-01 2013-03-19 Snipmac Innova, S.L. ANCHOR RECOVERY DEVICE.
NO346817B1 (en) * 2021-11-02 2023-01-16 Bakkemyra Robotics As A magnet activatable release apparatus, an assembly comprising the apparatus, and a method of using the assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995577A (en) * 1976-01-16 1976-12-07 Gentry Hermond G Marine device retrieving apparatus
JPS61275085A (en) * 1985-05-30 1986-12-05 Satoru Kobayashi Ship anchor
FR2592624A1 (en) * 1986-01-08 1987-07-10 Abbadie Jacques Device for disengaging anchors caught on the bottom
JPS63315394A (en) * 1987-06-19 1988-12-23 Satoru Kobayashi Ship anchor
JPS63315395A (en) * 1987-06-19 1988-12-23 Satoru Kobayashi Release device caught anchor
JP2914696B2 (en) * 1990-02-10 1999-07-05 悟 小林 Anchor anchor release device

Also Published As

Publication number Publication date
FR2674814B1 (en) 1994-04-08
AU649127B2 (en) 1994-05-12
FR2674814A1 (en) 1992-10-09
US5207775A (en) 1993-05-04
ES2068018T3 (en) 1995-04-01
AU1405192A (en) 1993-03-25
EP0508923A1 (en) 1992-10-14

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