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
  • B63B21/29—Anchors securing to bed by weight, e.g. flukeless weight anchors

Definitions

• This invention relates to a system for permanent moorings of buoyant objects for instance floating-bridges..pontoons, buoys and boats and consists of broadly speaking l.one joint- length trough the water between 2.one special anchor and 3. the connection to the moored buoyant object.
• the mooring forms a marine anchoring.
• the external premisses for marine anchorings for bridges,boats and so on are different for every place.
• the sea-bottom plain or sloping,can consist of everything from soft slime to bedrock.
• the position in the water may be a sheltered creek or directly on a navigable passage.
• Marine anchored floating objects are affected by winds,water-streams,waves and the reflections of the waves.Different big floating objects demand of course differently dimensioned anchorings.
• One type is used for a bridge fixed to several anchorings,another kind is demanded for a simple swinging buoy.Different needs,especially to be
• Fig.1 Survey.Two permanent anchorings of a floating-bridge according to the invention seen from the bottom.One of them to a bridge-hold as a lashing-winsch.The other one with a course chain as a connection.
• Fig.2.Detail The special anchor here even with a smaller anchor connected as an extra jerk-moderator.
• Fig.3.IIlustration How the big fastening-loop and the other rubber loop connected into it bringsout the mooring- goods from the frettingpoints of the anchor-stone.
• the first one of the three principal parts is the joint-length between the anchor and the anchoring- object on the surface.
• the cordage of synthetic material replaces now.We get tug-tenable goods when the yarn in the strands of the rope is built up by long fibres.As the long natural fibres (hemp, manilla and so on) are of course limited,the synthetic fibres can be made as long as one likes,in the type of silk.
• the cor ⁇ dages in synthetics becomes more than twice as strong and can be chosen with weight and dimensions correspondingly smaller
• the intake of humidity is unchanged in the water.An extra water dismissal can easily be obtained by water-proofing methods Whereas the hempropes have to be tarred,the synthetic fibre remains inaffected of water.Living organisms do not attack.We do not get any rot nor mould.As for a comparision with
• belt of the same tug-tenacity as a chain of a half inch need not be broader than 50 mm.
• the belts are sewn according to the formula:the number of stitches/cm x x the length of the seam x the number of seams x the tenacity of the thread x 0,85 (the loss factor) with the seams always at an angle towards the warp threads in a plain or double sling.
• the double sling makes it possible for control and an eventually exchange of the belt from the level of the surface, too by pulling this around all as.
• the belts are protected from wear and tear on their most exposed places at the passages up and down with cast plastic material,fagstockings which are sewn on or something of the like.
• the second one of the three principal parts consists of the anchor.In the standard version this is composed by a concrete stone(Fig.2) .In this there is a skeleton of a tyre,for instance a quite usual car-tyre,but no longer fit fortxaffre.,.and moulded by one half in order to function as a big anchor-loop here.
• the two edge-yarn-rings of the tyre turns into two even wire- loops,carefully fixed into the concrete.
• the collec ⁇ tion to the moored floating object is composed of one 1-2 metres long chain-cable from the bridge-hold,the buoy etc.Herewith it is meant to spare the belt from possible icefrettings which we have here in winter-time and from other wear and tear,too, which may occur around the bridge-deck.
• the chain-stump is chosen of a much courser dimension than that the tug-tenacity of itself demands,in spite of the corrosion graduation downwards this can receive a time of validity of the 15 years which the anchorings are indeed at least of all expected to hold.As the belts are lacking self-weight in the water,this metre length chain works as a weighing-adj stment of the buoy in the water.Independent of the depth of the water an identical size of the buoy-float can be kept.In mooring performance with chains all the way down a still bigger buoy has to be used at increasing water-depth.Especially in buoy-anchorings where the light buoy heels and swing

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Revetment (AREA)
• Tires In General (AREA)
• Piles And Underground Anchors (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=20375420

Family Applications (1)

Country Status (6)

Families Citing this family (5)

• 1989
  • 1989-03-22 SE SE8901011A patent/SE469068B/sv unknown
• 1990
  • 1990-03-22 EP EP90905712A patent/EP0464126A1/en not_active Ceased
  • 1990-03-22 WO PCT/SE1990/000189 patent/WO1990011220A1/en not_active Application Discontinuation
  • 1990-03-22 AU AU53475/90A patent/AU5347590A/en not_active Abandoned
• 1991
  • 1991-09-23 NO NO913729A patent/NO180075C/no unknown
  • 1991-09-23 FI FI914446A patent/FI914446A0/fi not_active Application Discontinuation

Non-Patent Citations (1)

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