EP0102464B1 - Dispositif pour le renflouage rapide et aisé d'ancres étant immobilisés dans le sol marin - Google Patents

Dispositif pour le renflouage rapide et aisé d'ancres étant immobilisés dans le sol marin Download PDF

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Publication number
EP0102464B1
EP0102464B1 EP83105984A EP83105984A EP0102464B1 EP 0102464 B1 EP0102464 B1 EP 0102464B1 EP 83105984 A EP83105984 A EP 83105984A EP 83105984 A EP83105984 A EP 83105984A EP 0102464 B1 EP0102464 B1 EP 0102464B1
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EP
European Patent Office
Prior art keywords
anchor
chain
rope
integral
shank
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
Application number
EP83105984A
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German (de)
English (en)
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EP0102464A1 (fr
Inventor
Carlo Pedruzzi
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0102464A1 publication Critical patent/EP0102464A1/fr
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Classifications

    • 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

  • This invention relates to a device enabling an easy quick refloating of heavy means fouled in the sea-bottom, such as for example anchors, or enabling the hauling in of the anchoring rope or chain from any object or body located at a predetermined position even, for example after having performed a specific operation.
  • an anchor comprises a shank having two arms normally secured or hinged to one end thereof, said arms terminating with triangular ends or flukes.
  • the connecting end between said arms and shank is referred to as crown.
  • said anchoring rope or chain is engaged at the other end of the shank.
  • An anchor is fouled when it is entrapped in some thing in the sea-bottom, such as a chain, rope, net or heavy body, so that the two arms of the anchor, when the latter drags the bottom for seizing purposes, insert under the obstacle and take such an attitude that the anchor can be brought afloat only by retraction. To do this, a tensile force has to be exerted on the rear portion, that is on the crown.
  • Another device at present used provides the use of an anchor with two ropes or chains, of which one for standard use and the other of which for disengaging a disconnecting device arranged between said shank and arms.
  • a disconnecting device arranged between said shank and arms.
  • Such means are referred to as "Maria Maria”.
  • the disadvantage of this device is bonded to the provision of said two ropes or chains which have to be always present and unitedly operated. As apparent, this involves the possible mutual entanglement thereof or knotting thereof both outside and inside the water.
  • said "Maria Maria” might also be dangerous because, should the disconnecting device between the arms and shank unfortunately or by misfunction be operated at a time of risk, for example when the anchor is dropped in water to slow down the boat in case of collisions, the anchor with free arms would be uncapable of gripping.
  • the disconnecting device of the "Maria Maria" anchor once operated, that is once the arms have been released from the shank, would make the anchor useless until the anchor is hauled in and brought to standard operating position, that is with the arms integral or fast with the shanks.
  • the disconnecting device is effective on the anchor structure rendering the anchor useless during hauling in thereof.
  • this latter device there are high disproportions between the shank and arms strength at the disconnecting device, which considerably restricts the gripping capability of the anchor.
  • US-A-2 490 460 describes a device for easy quick refloating of an anchor, comprising a shank having a plurality of arms engaged to one end thereof and made integral by the crown, wherein the operating rope or chain is connected to one end of said shank at the anchor ring, the operating rope or chain is connected to the anchor also at the crown, whereas the connection of said operating rope or chain with the anchor ring occurs through engaging means.
  • a disengaging action of the operating rope from the engaging means is operable from the boat by a sharp pull and quick release effected on the operating rope.
  • No separate engaging means is provided for exerting a force in the same direction along which the chain extends.
  • FIGs. 1, 2 and 3 show a small section of connecting rope or chain 1, in this case a chain, secured to the rear portion 2a of crown 2 of anchor 3 by means of spring catches or rings 4.
  • Said connecting means constituted by chain 1 is suitable to restrain the operating chain 5 at the last ring 6 to allow for sliding and accordingly free rotation of shank 7 relative to arms 8, hinged or pivoted to crown 2 at location 9, and fouled in an obstacle 10.
  • Chain 5 is connected to the boat, the head of which (not to scale) is quite schematically shown in the figures of the drawings.
  • the engaging means 40 is shown with reference to Figs. 5 and 6.
  • Such means comprise a fork 11, secured to said shank 7 by means of the anchor ring 12, completed with an inner U-bolt 13 which, by engaging the link 14 of the operating chain 5, restrains the latter soas to assure load transmission of anchor 3.
  • the small section of bell-shaped tube 15 constitutes a blockinvg mans. It is fitted on fork 11 and retained in position by means of two pins 17 inserted within two holes 18 in said fork 11 and kept in engagement in groove 19 through the action of a leaf spring 20.
  • Said groove 19 provides a lead-in surface 19a for insertion or connection and a surface 19b of relative sealing.
  • the surface 32 constitutes a guide for the positioning of chain 5.
  • the device can be mounted with some slight adjusting operation on most of commercially existing anchors. Thus, only a small change to the anchor is sufficient, by providing an attachment location of the operating chain also to the extreme rear portion of crown 2.
  • Figs. 1 and 2 show chain 5 connected to the crown and running along the shank 7.
  • This chain is restrained to the anchor head by the small section of bell-shaped tube 15, making it integral with fork 11 which, in turn, is integral with anchor ring 12.
  • the anchor will suffice to slip off said small section of bell-shaped tube 15 so as the chain disengages from fork 11 on which it is inserted, is released and thus results connected only to the crown 2.
  • This allows for anchor bringing afloat owing to the force exerted on the crown, so as to pull the anchor in direction opposite to that in which it is fouled.
  • a disengaging means should be used for exerting a force in the same direction along which the chain extends, engaging the small section of bell-shaped tube 15 and extracting it from the collar 21 integral with the head of shank 7.
  • This means is particularly shown in Figs. 2, 3 and 4. It comprises a bell 22 made of heavy material and internally provided with release pawls 23 movable between two extreme positions owing to the provision of per se known stop means (not shown). Said bell 22 is divided into two interhinged valves and completed by a small section of rope 24 connected to the head by means of two rings or catches 25, to which the auxiliary rope 26 is coupled by a catch 27.
  • the disengaging means or member is used as follows.
  • valves of bell 22 When anchor 3 has to be brought afloat, valves of bell 22 will be opened onboard, such valves being preferably made of very heavy material, such as cast iron, and the latter will be fitted on the operating rope or chain 5, then closing again and clamping said valves by means of suitable - per se known hooks, not shown on the drawings. It is thus apparent that it is not necessary to disengage the chain from the winch or hawsehole.
  • the bell 22 is lowered as secured to the auxiliary rope or chain 26. Owing to its own weight said bell will exert a force for connection to the end of said small section of tube 15, overcoming the reaction of the springs of said release pawls 23. Confirmation for the user will be given in that said auxiliary rope will be released of the load due to the weight of bell 22.
  • said pawls are inwardly movable, while stop means are provided for end positions.
  • auxiliary rope or chain 26 By exerting a pull on auxiliary rope or chain 26, said small section of bell-shaped tube 15 is released from fork 11 and accordingly said operating chain 5 is disengaged from fork 11.
  • said chain is no longer restrained to the anchor ring of the anchor head, but only to said crown 2.
  • the last ring 6 By pulling said operating chain 5, the last ring 6 will slide to the end of small section of chain 1 and shank 7, with said fork 11 in abutted condition by means of anchor ring 12, will downward rotate (see Fig. 4).
  • the anchor 3 will be fouled as said shank 7 will continue in downward rotation and arms 8 will upward rotate, whereas the rear plate of crown 2 will take a nearly aligned position with operating chain 5.
  • said bell can be recovered by exerting a pull on rope 26.
  • the small secitn of bell-shaped tube is particularly designed in order to avoid any displacement from its normal position in case of hurried operation, or operation carried out under conditions of rough sea.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Earth Drilling (AREA)

Claims (7)

1. Dispositif pour le renflouage rapide et aisé d'une ancre, ladite ancre comprenant un tige (7) ayant deux bras (8) engagés à une extrémité de celui-ci et rendus solidaires par un diamant (2), où le câble ou chaîne de manoeuvre (5) est joint à l'autre extrémité dudit tige (7) en correspondance d'une cigale (12), le câble ou chaîne de manoeuvre (5) étant joint à l'ancre aussi en correspondance du diamant (2), tandis que la jonction dudit câble ou chaîne de manoeuvre (5) avec la cigale (12) s'effectue à travers un moyen d'engagement (40), caractérisé par le fait que ledit moyen d'engagement (40) comprend une portion (11, 13, 20, 21) solidaire avec l'autre extrémité dudit tige (7) et est munie intérieurement au moins d'un membre ou moyen (13) apte à retenir du moins une portion ou anneau (14) du câble ou chaîne (5), pour assurer la transmission du chargement à ladite ancre, et comprenant en outre un moyen de blocage (15) à clenche apte à s'engager avec la portion solidaire (11, 13, 20, 21) du moyen d'engagement et pourvu d'une surface de prise (15a) pour coopérer avec un moyen de désengagement (41), ledit moyen de désengagement (41) comprenant un élément tubulaire (22) muni d'une ouverture passante pour le glissement intérieur dudit câble ou chaîne (5) et comprenant en outre moyens d'accrochage (23) pour la surface de prise (15a) sur le moyen de blocage (15) pour saisir ledit moyen de blocage (15).
2. Dispositif selon la revendication 1, caractérisé par le fait que ledit membre ou moyen de blocage (15) est muni d'une ouverture passante pour le glissement à l'intérieur dudit câble ou chaîne (5).
3. Dispositif selon la revendication 1, caractérisé par le fait que ladite portion (11,13, 20, 21) solidaire avec la cigale (12) comprend du moins un élément élastique (20), dont les extrémités à pivot (17) s'engagent avec une rainure (19) annulaire prévue dans ce moyen de blocage (15).
4. Dispositif selon la revendication 1, caractérisé par le fait que ces moyens d'accrochage (23) pour les surfaces de prise (15a) comprennent cliquets à clenche dont les positions extrêmes sont fixées par des moyens d'arrêt.
5. Dispositif selon la revendication 1, carac- térisé par le fait que lesdits moyens de désengagement (41) sont subdivisés en du moins deux valves engagées entre elles pour faciliter l'insertion dudit câble ou chaîne (5) quand on désire opérer avec lesdits moyens de désengagement (41).
6. Dispositif selon la revendication 1, caractérisé par le fait que ledit câble ou chaîne (5) s'engage avec un moyen de jonction (1) assuré à la portion postérieure extrême du diamant (2) qui n'est pas influencé par aucune position de prise de l'ancre, de façon à permettre le déplacement du point d'application de la force exercée à travers ledit câble ou chaîne (5) d'une extrémité à l'autre de l'ancre (3).
7. Dispositif selon la revendication 1, caractérisé par le fait que ladite portion solidaire avec le moyen d'engagement (40) comprend un collier (21) ayant bords évasés (21a) et une surface d'aboutement (31) pour l'aboutement et la protection dudit moyen de blocage (15).
EP83105984A 1982-06-28 1983-06-18 Dispositif pour le renflouage rapide et aisé d'ancres étant immobilisés dans le sol marin Expired EP0102464B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2209382 1982-06-28
IT22093/82A IT1195800B (it) 1982-06-28 1982-06-28 Dispositivo per un semplice e rapido disincaglio di strumenti pesanti incattivati nel fondale marino,quali ad esempio ancore

Publications (2)

Publication Number Publication Date
EP0102464A1 EP0102464A1 (fr) 1984-03-14
EP0102464B1 true EP0102464B1 (fr) 1986-12-30

Family

ID=11191392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105984A Expired EP0102464B1 (fr) 1982-06-28 1983-06-18 Dispositif pour le renflouage rapide et aisé d'ancres étant immobilisés dans le sol marin

Country Status (3)

Country Link
EP (1) EP0102464B1 (fr)
DE (1) DE3368568D1 (fr)
IT (1) IT1195800B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846093A (en) * 1986-06-25 1989-07-11 Garcia Norena Alfonso System for releasing an anchor moored to the bottom of the sea
CN110526411A (zh) * 2019-09-10 2019-12-03 上海建科建筑设计院有限公司 一种沉水悬浮净水装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568006A (en) * 1948-04-17 1951-09-18 Illsche Arthur Means for releasing fouled boat anchors
US2490460A (en) * 1948-07-09 1949-12-06 Theodore E Mcavoy Retrievable anchor means
US3150629A (en) * 1963-05-01 1964-09-29 Fields John Hardy Breakaway anchor
FR2172603A5 (fr) * 1972-02-16 1973-09-28 Martinez Georges
US3905190A (en) * 1974-10-30 1975-09-16 Michael D Pearlman Release mechanism for large chain
US3995577A (en) * 1976-01-16 1976-12-07 Gentry Hermond G Marine device retrieving apparatus

Also Published As

Publication number Publication date
IT1195800B (it) 1988-10-27
IT8222093A0 (it) 1982-06-28
EP0102464A1 (fr) 1984-03-14
DE3368568D1 (en) 1987-02-05

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