US3747552A - Anchor means - Google Patents

Anchor means Download PDF

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Publication number
US3747552A
US3747552A US00110847A US3747552DA US3747552A US 3747552 A US3747552 A US 3747552A US 00110847 A US00110847 A US 00110847A US 3747552D A US3747552D A US 3747552DA US 3747552 A US3747552 A US 3747552A
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US
United States
Prior art keywords
anchor
blade
block
attached
anchor according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00110847A
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English (en)
Inventor
P Rhodes
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US3747552A publication Critical patent/US3747552A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B63B21/24—Anchors
    • B63B21/26—Anchors securing to bed

Definitions

  • a self-embedding anchor comprises a block of non buoyant material to which is attached a pivotable blade and an actuator to cause the blade to swing into engagement with the surface on which the anchor rests.
  • the anchor also includes at least one blade slidably mounted on the block for movement by another actuator.
  • This invention relates to anchoring means and in particular to means wherein the anchor can be precisely located on the sea bed.
  • an anchoring means comprising a block of non-buoyant material, at least one blade slideably mounted on the block so as to be capable of movement in a downward direction and a pivoted blade attached to the underside of the block with actuating means linked thereto to cause it to move in a downward direction.
  • the main bulk of an anchoring means according to this invention comprises the block of non-buoyant material which may be for example iron or concrete but this is only of sufficient size to sink rapidly to the sea bed and is thus not cumbersome or difficult to handle.
  • a pivoted blade is arranged to be actuated in a downward direction after an anchoring means has come to rest on the sea bottom and thus by the downward movement of the blade it is driven intothe sea bed at the point of coming to rest so precisely locating an anchor at this point.
  • a blade may take various forms but it is preferred that it should be of a form such that it is readily driven into the sea bed during the pivoting motion but is difficulty moved or removed once embedded.
  • One such form of blade comprises a first flat blade attachedat its upper end to the pivot and arranged so as to present its edge to the sea bed when pivoted; at the lower end of this blade is attached at right angles a second blade which is bent to a radius of curvature substantially equal to the length of the first blade. In this way as the combined blade is turned down about the pivot the only resistanceto embedding is the small resistance of the edges of the first and secondblades. Once embedded the combined blade will resist withdrawal or movement by forces acting in a multiplicity of directions.
  • One method of causing a pivoted blade to move in a downward direction is by means of a rod attached at one end to the blade, the other end being slideably carried in a tube wherein a spring or explosive actuating means is also carried. At the appropriate time the spring or explosive is actuated to move the rod and blade down and to effect the embedding. Actuation of an explosive or spring means may be effected by remote control from the surface or manually. be a diver. It is also possible andit is preferred to holdthe spring or firing means under tension by. for example a water soluble or water-weakened pin which after an interval no longer retains the spring or pin and then allows the embeddingsequence to commence.
  • actuating methods which may be used are, for example, those which are initiated by the hydrostatic pressure or the pressure developed by chemical reaction with water when an anchor is sunk in water. Suitable stops may be provided to limit the swivelling movement of a blade in one or both directions.
  • a pivoted blade anchoring means may comprise a blade or blades slideably mounted on the block and designed to be driven into the sea bed either by mechanical or explosive means as hereinbefore described or by drag on the anchor cable. It is preferred that such slideably mounted blade (or blades) is: attached to the anchor cable, when embedding of the blade. may take place without displacement of the anchor from its original position.
  • FIG. 1 is a general view of an anchoring means according to this invention showing a pivoted blade in its lowered position and FIG. 2 is an enlarged cross section of an explosive actuating means.
  • a block of concrete 1 carries in a recess in its underside a pivoted.
  • blade 2 comprising a vertical blade 3 connected to a pivot (not shown) mounted so that a narrow edge leads when the blade moves about the pivot and a horizontal curved blade 4 attached to the lower extremity of blade 3 the curvature being of a radius equal to the distance from the pivot to the blade 4.
  • actuating rod 5 the upper end of which slides within a tube 6 mountedin block 1 and fittedat its upper end, which extends above the block 1, with explosive actuating means the firing mechanism 7 of which is shown in detail in FIG. 2 and is described below.
  • twotubes 8 in which two parallel rods 9 are slideably and telescopically mounted.
  • a U-shaped bar 10 To the protruding ends of rods 9 is attached a U-shaped bar 10 the limbs of which are flattened into triangular blades 11 with the apices pointing downwards and towards the end of the block in the direction in which the blade 2 moves when actuated.
  • FIG. 1 two anchor cables 12 are shown and these are attached to the bar 10 and pass through loops 13 affixed to the upper surface of the block 1.
  • eyebolts are fixed inthe block 1 and two of these 14 are shown in FIG. I fixed at the lower front face of block 1..
  • a tube 6 has at its end a breech 15 into which a blank cartridge 16 may be inserted and a firing pin 17.
  • a bracket To the side of tube 6 is attached a bracket, only one limb l8of which is shown in FIG. 2, carrying a springl9 loaded firing hammer 20 shown in the cockedposition in which it is maintained by a trigger mechanism consisting of a trigger rod 21 which pivots about a fixed pin 22 and a retaining pin 23.
  • an anchor according to this invention may be accurately fixed in position without relying upon drag across the sea bed to secure it in position as in conventional anchors.
  • leading edge of blade 4 may be modified so as to present a sharper edge for initial penetration of the sea-bed.
  • leading ends of blades 11 may be made blunter and the blades broader for better retention after embedding.
  • blades 2 and 11 move in the same direction for embedding, they may equally well be arranged to move in opposite directions which may produce a more stable anchorage in some circumstances.
  • An anchor comprising a block of non-buoyant material, a blade attached to the underside of the block for pivotable movement about a fixed point in a plane per- I pendicular to the underside of the block and actuating means linked to the blade to cause the blade to swing in a downward direction so as to be capable of driving into the surface on which the anchor rests.
  • An anchor according to claim 1 including at least one blade slideably mounted on the block for downward movement by other actuating means so as to be capable of penetrating the surface on which the anchor rests.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Earth Drilling (AREA)
US00110847A 1970-02-18 1971-01-29 Anchor means Expired - Lifetime US3747552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779170 1970-02-18

Publications (1)

Publication Number Publication Date
US3747552A true US3747552A (en) 1973-07-24

Family

ID=9839809

Family Applications (1)

Application Number Title Priority Date Filing Date
US00110847A Expired - Lifetime US3747552A (en) 1970-02-18 1971-01-29 Anchor means

Country Status (4)

Country Link
US (1) US3747552A (enrdf_load_stackoverflow)
FR (1) FR2078727A5 (enrdf_load_stackoverflow)
GB (1) GB1304621A (enrdf_load_stackoverflow)
NL (1) NL7101743A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437128A (en) * 1993-01-25 1995-08-01 Patrick N. Gremillion Ground anchor
US20070289811A1 (en) * 2006-06-16 2007-12-20 Brent Smith Apparatus and method of arresting a fall
US20110174575A1 (en) * 2010-01-15 2011-07-21 Sidla James G Tank Lifeline System
US8584798B2 (en) 2010-06-10 2013-11-19 Garlock Safety Systems Inc. Safety apparatus for arresting a fall of a worker
US20220339065A1 (en) * 2020-01-10 2022-10-27 Ann CARRINGTON Crystal, spiritual, energy healing method and float vessel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408560A (en) * 1944-01-07 1946-10-01 Warner L Keehn Plate clamp
US3078931A (en) * 1960-12-08 1963-02-26 David G Moore Free corer
US3187858A (en) * 1962-12-11 1965-06-08 Atlantic Res Corp Anchoring device
GB1040155A (en) * 1962-02-27 1966-08-24 Alexander Carmichael Dunsmore Improvements in and relating to anchors and mooring tackle
US3577949A (en) * 1968-06-19 1971-05-11 Us Navy Explosively propelled underwater embedment anchor assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408560A (en) * 1944-01-07 1946-10-01 Warner L Keehn Plate clamp
US3078931A (en) * 1960-12-08 1963-02-26 David G Moore Free corer
GB1040155A (en) * 1962-02-27 1966-08-24 Alexander Carmichael Dunsmore Improvements in and relating to anchors and mooring tackle
US3187858A (en) * 1962-12-11 1965-06-08 Atlantic Res Corp Anchoring device
US3577949A (en) * 1968-06-19 1971-05-11 Us Navy Explosively propelled underwater embedment anchor assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437128A (en) * 1993-01-25 1995-08-01 Patrick N. Gremillion Ground anchor
US20070289811A1 (en) * 2006-06-16 2007-12-20 Brent Smith Apparatus and method of arresting a fall
US8240431B2 (en) * 2006-06-16 2012-08-14 Brent Smith Apparatus for arresting a fall
US20110174575A1 (en) * 2010-01-15 2011-07-21 Sidla James G Tank Lifeline System
US8627923B2 (en) 2010-01-15 2014-01-14 Garlock Safety Systems Inc. Tank lifeline system
US8584798B2 (en) 2010-06-10 2013-11-19 Garlock Safety Systems Inc. Safety apparatus for arresting a fall of a worker
US20220339065A1 (en) * 2020-01-10 2022-10-27 Ann CARRINGTON Crystal, spiritual, energy healing method and float vessel

Also Published As

Publication number Publication date
FR2078727A5 (enrdf_load_stackoverflow) 1971-11-05
NL7101743A (enrdf_load_stackoverflow) 1971-08-20
GB1304621A (enrdf_load_stackoverflow) 1973-01-24

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