Ships – Anchor – Fluke type
Patent
1988-07-05
1990-03-13
Peters, Jr., Joseph F.
Ships
Anchor
Fluke type
114301, B63B 2144
Patent
active
049075233
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a drag anchor, the shank of which is pivotally attached to its part which forms the fluke.
The principal object of the invention is to make available a drag anchor of the kind indicated above which is simple in construction and can be given a comparatively low weight, and yet provides effective attachment to the sea bed.
This object is achieved with a drag anchor executed in accordance with the invention, which is characterized essentially in that the part which forms the fluke consists of a hollow body open at its front and rear end in the direction in which the shank is towed, i.e. in the direction of movement of the drag anchor, which body forms a mantle enclosing the rear part of the shank with an extension in the direction of movement of the drag anchor, and in that the shank is articulated in one plane and is attached to the mantle via a bearing device spanning its internal cavity centrally, taken in a transverse section relative to the direction of movement of the drag anchor, which bearing device consists of a wall dividing the internal space of the hollow body and extending in the direction of movement of the drag anchor and is so arranged as to provide lateral support for the shank .
A number of illustrative embodiments of the invention are described below with reference to the accompanying drawings, in which:
FIG. 1 shows in perspective view a first illustrative embodiment of a drag anchor executed in accordance with the invention;
FIG. 2 shows a second illustrative embodiment of a drag anchor executed in accordance with the invention;
FIG. 3 is a perspective view of a component part of the drag anchor in accordance with FIG. 2;
FIGS. 4-6 illustrate in section various sequences during the use of a drag anchor executed in accordance with FIGS. 2 and 3;
FIGS. 7-13 show a third illustrative embodiment of a drag anchor executed in accordance with the invention, illustrated schematically and in perspective view, in the broken position and during use.
In FIG. 1 the designation 1 is used in respect of the shank of the drag anchor in accordance with a first illustrative embodiment, whilst the whole of the part of the drag anchor which forms the fluke is designated by 2. The part 2 which forms the fluke is executed in the illustrative embodiment shown here as a plate bent into the form of a rhomboid, the four sides of which are designated by 3, 4, 5 and 6. Integral with one edge of the side 4 is a bent-over end flap 7, which extends for a certain distance inwards over the adjacent edge part of the side 5 and is attached to the side 5 by means of a number of rivets 8 or other suitable fasteners. A further plate 11 extends between the opposing corners 9 and 10 of the rhombus which are separated from one another by the shortest distance, which plate is secured with z-shaped, bent-over edge parts 12 and 13 to the part of the side 3 closest to the corner 10 and to the part of the side 5 closest to the corner 9, in such a way that the plate 11 forms a diagonal plane extending between the edges 9 and 10, thereby forming an internal partition wall inside the hollow body open at both its ends which is formed by the side walls 3-6. The rear end part of the shank 1 indicated by broken lines is pivotally attached to the partition wall plate 11 by means of a pivot pin 14. For the purpose of guiding the shank laterally, the shank extends along the partition wall plate 11 in the form of a fork to either side of the plate, so that the shank guided by the plate 11 is able to pivot only in a plane which coincides with the plate 11. The edge of the plate 11 situated towards the front will be seen from the drawing to be recessed slightly behind the edges of the sides 3-6 of the hollow body which face towards the front. In the illustrative embodiment shown here the shank is constructed of a number of pieces of strip material, preferably sheet steel, joined together with rivetted connections 15. The forward-facing edge of the mantle of the hollow body formed from the side components 3-6 is con
REFERENCES:
patent: 710167 (1902-09-01), Pettes
patent: 1081163 (1913-12-01), Smith
patent: 2245807 (1941-06-01), Oehrle
patent: 3180304 (1965-04-01), Brady
patent: 3757727 (1973-09-01), Hungerford
Bartz Clifford T.
Peters Jr. Joseph F.
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