US3570440A - Marine anchor - Google Patents

Marine anchor Download PDF

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Publication number
US3570440A
US3570440A US801727A US3570440DA US3570440A US 3570440 A US3570440 A US 3570440A US 801727 A US801727 A US 801727A US 3570440D A US3570440D A US 3570440DA US 3570440 A US3570440 A US 3570440A
Authority
US
United States
Prior art keywords
fluke
anchor
leeboard
secured
flat
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
US801727A
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English (en)
Inventor
Hendrik Pot
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.)
IND NV
INDUSTRIEELE NV
Original Assignee
IND NV
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 IND NV filed Critical IND NV
Application granted granted Critical
Publication of US3570440A publication Critical patent/US3570440A/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
    • B63B21/30—Anchors rigid when in use
    • B63B21/34—Anchors rigid when in use with two or more flukes

Definitions

  • a marine anchor is in the form of a flat bod [541 MARINE ANCH9R having plow-shaped flukes extending from one or both fla t 6cla'mszmawmg sides of the anchor. The flukes dig into the soil to a depth [52] US. Cl. 114/206 limited by contact of'the flatbody with the soil. A leeboard is disposed on the same side of the body as the flukes.
  • the present invention relates to marine anchors, more particularly of the type having at least one fluke secured to the anchor body by means of an arm.
  • An object of the present invention is to provide an anchor having increased gripping force.
  • Another object of the present invention is the provision of an anchor the depth of whose penetration is limited.
  • Yet another object of the present invention is the provision of an anchor which will penetrate to, a controlled depth upon tension in the anchor chain or cable.
  • Still another object of the present invention is the provision of an anchor that will grip the marine soilin any position in which it falls.
  • the invention also comtemplates the provision of an anchor of reduced tendency to dig into the soil nose first.
  • an object of the present invention to provide an anchor which will be relatively simple and inexpensive to manufacture, easy to emplace in the soil and remove, and rugged and durable in use.
  • FIG. 1 is a somewhat schematic view of an anchor according to the present invention, showing the principal relationships of the parts and various positions of the anchor cable; and I FIG. 2 is a perspective view of an anchor fluke and arm therefor, for use with the anchor of FIG. 1.
  • a marine anchor comprising a flat anchor body 1 which is generally plate shaped.
  • Body 1 is of course not buoyant in water, so that it sinks, and may be of cast iron or other conventional materials for marine anchors.
  • Body 1 may be of any suitable shape and is shown in the drawing in the form of a trapezoil; but it .will be understood that it may take other shapes, for example triangular.
  • Body 1 may be an irnperforate plate, or may have perforations soas .to speed its fall through the water and also facilitate its dislodgement from marine soil. Body 1 may even be in the form of an open framework.
  • body 1 On its underside, body 1 is provided with two flukes 2 each of which is secured to a flat surface of body 1 by means of an arm 3.
  • flukes 2 there are two flukes disposed symmetrically on opposite sides of the center line 4 of body 1; but it will be understood that there may only be one fluke, which would then lie on centerline 4, or three or four or more flukes spaced apart about a side of body 1. It is also possible to provide flukes on oppositesides of body 1, so that the anchor will be effective regardless of which of its two sides is down when the anchor settles.
  • body 1 In its forward end, body 1 is provided with fastening means 5 to which is secured the anchor cable or anchor chain 6.
  • Fastening member 5 is preferably on the 1 same side as the flukes.
  • fastening means 7 On the oppositeside from the flukes, near the rear of body 1, fastening means 7 is provided to which is secured a cable 8 to heave the anchor out of themarine soil so as to raise the anchor.
  • the forward and rear edges of body 1 are parallel to each other and perpendicular to centerline 4.
  • the nose will ordinarily be relatively narrow.
  • the nose or forward edge of body 1 may be bent over in a direction facing away from the side which bears the flakes.
  • flukes are provided on both sides, the nose can have a thickened and rounded front edge.
  • leeboard 9 is of assistance in preventing the nose from digging into the marine soil if a Ieeboard 9 is provided near the nose on the fluke side of the body 1.
  • the leeboard has the form'of a flattened plate and is perpendicular to the plane of body 1 and parallel to or coincident with center line 4.
  • leeboar 9 also unexpecwith many of the same advantages that leeboard 9 affords.
  • the flukes 2 tend to dig into the marine soil to a depth limited by the body 1, which tends to rest flat in. contact with the soil when the anchor is fully set.
  • the flukes are plow shaped. In the illustrated embodiment, they consist of two plates 10 and l. l, as best seen in FIG. 2, each of which may if desired be triangular, preferably right triangular with the hypotenuses joined along a raised but downwardly forwardly inclined centerline. Plates 10 and 11 thus incline downwardly outwardly away from each other and are upwardly concave, like a plowshare; If desired,.the grip of the flukes can be improved by corrugating one or more portions of plates 10 and 1 l.
  • a marine anchor comprising a flat body, at least one fluke secured to and projecting transversely from at least one side of said flat body, and a leeboard secured to and extending perpendicularly from the same side of the body as the fluke and parallel to the direction in which the fluke extends, said body being narrower at its forward end than at its rearward end, said leeboard being disposed adjacent the forward end of the body and said fluke being disposed adjacent the rear end of the body.
  • An anchor as claimed in claim 10 there being a plurality of flukes on the same side of said body, said flukes being disposed on opposite sides of the longitudinal centerline of the body.
  • a marine anchor comprising a flat body, at least one fluke secured to and projecting forwardly and downwardly from said flat body, and a leeboard secured to and extending downwardly from the same side of the body as the fluke, said Ieeboard being disposed in a vertical plane parallel to the direction in which the fluke extends forwardly.
  • An anchor as claimed in claim 3 said body being elongated in said direction and said leeboard being disposed adjacent the forward end of the body and said fluke being disposed adjacent the rear end of the body.
  • a marine anchor comprising a flat body, and at least one fluke secured to and depending from the underside of said flat body, said fluke being plow-shaped and having a pair of upper surfaces that incline forwardly downwardly and that incline downwardly away from each other, said fluke surfaces being upwardly concave.
  • An anchor as claimed in claim 5 said body being elongated in a front to rear direction, said fluke extending downwardly away from said body and terminating in a forwardly directed point, and an anchoring cable attached to the forward end of said body.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
US801727A 1968-02-26 1969-02-24 Marine anchor Expired - Lifetime US3570440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6802686A NL6802686A (de) 1968-02-26 1968-02-26

Publications (1)

Publication Number Publication Date
US3570440A true US3570440A (en) 1971-03-16

Family

ID=19802874

Family Applications (1)

Application Number Title Priority Date Filing Date
US801727A Expired - Lifetime US3570440A (en) 1968-02-26 1969-02-24 Marine anchor

Country Status (6)

Country Link
US (1) US3570440A (de)
BE (1) BE728358A (de)
DE (1) DE1910615A1 (de)
FR (1) FR2002618A1 (de)
GB (1) GB1219745A (de)
NL (1) NL6802686A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346663A (en) * 1978-05-02 1982-08-31 Institut Francais Du Petrole Anchoring system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156756B (en) * 1984-04-03 1987-05-20 William Frank Spanner Improvements in anchors
GB8808373D0 (en) * 1988-04-09 1988-05-11 Simpson-Lawrence Ltd Marine anchor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735394A (en) * 1956-02-21 walpole
US2764116A (en) * 1955-04-26 1956-09-25 Nicholas L Brewer Boat anchor and retrieving means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735394A (en) * 1956-02-21 walpole
US2764116A (en) * 1955-04-26 1956-09-25 Nicholas L Brewer Boat anchor and retrieving means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346663A (en) * 1978-05-02 1982-08-31 Institut Francais Du Petrole Anchoring system

Also Published As

Publication number Publication date
DE1910615A1 (de) 1969-09-18
FR2002618A1 (de) 1969-10-31
GB1219745A (en) 1971-01-20
BE728358A (de) 1969-07-16
NL6802686A (de) 1969-08-28

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