Abstract: Anchor comprising a fluke and a shank which at a first end is attached to the fluke and a second end that is situated opposite to the first end, is provided with means for attachments of the anchor to a penetration line or anchor line, in which the shank comprises two shank legs, which at the second end are connected to each other using a pin, in which the portion of the pin situated within the shank legs also serves as connection means for an end link or end shackle of the penetration line or anchor line.

Abstract: Provided is a Danforth type anchor by which anchor effect is obtained rapidly and reliably, and can be lifted up certainly. The anchor comprises a base unit; a pair of flat plate flukes projecting horizontally outward from the base unit; a shank joined at its base end portion to the base unit; and an orientation control rod provided in the base unit, the base unit including (A) flat plate-like support base plates each of which is formed of (i) a front portion extending at right angle to the reference plane in which the flukes extend and having upper and lower edges inclined outward toward the rear end thereof, and (ii) a rear end portion formed integrally with the front portion and having upper and lower edges inclined outward; and (B) a pair of secondary guide plates fixed to the inclined upper and lower edges of the rear end portions of the support base plates, the secondary guide plates having at their respective rear end sections bent rear end portions being bent to incline inward.

Abstract: An improved anchor assembly of the Danforth type. The crown is formed from a single piece of rectangular tubing by a pressing operation to form a crown having two parallel inwardly disposed sidewalls and, at generally right angles thereto, two sidewalls which extend towards each other in a forward direction. Right-hand and left-hand flukes are each formed from a single piece of metal plate material and have a triangular plate portion and flange portion which extends to either side of the plate portion at right angles thereto. Extensions of the flange are welded to the parallel sidewalls of the crown box. The rear end of a shank, which is formed from square bar stock, is disposed within the crown box with an aperture in the shank being in alignment with corresponding apertures in the flange extensions of the flukes and the parallel sidewalls of the crown box. A stock is inserted through the apertures so that the shank can pivot about an intermediate portion of the stock.

Abstract: A twin-fluke anchor has a shank, a stock, fluke elements mounted upon the stock to pivot as a unit at the inner end of the shank, each element including a fluke surface in a first plane and a rib generally perpendicular to the first plane, the shank disposed between ribs, and a crown including a pair of flat plates having opposed inner surfaces, each plate supported centrally of the flukes and spaced from the flukes plane and sloping upwardly and rearwardly away from the plane to permit bottom material to flow freely between the inner surfaces of the plates and the flukes. The shank inner end has opposite end surfaces to engage upon respective opposed inner surfaces of the crown plates to limit the range of pivoting movement of flukes, at least one end surface of the shank engaging an opposed inner surface of a crown plate along a line of contact whereby holding load is transferred from the shank to the flukes by a long coupled reaction.

Abstract: A gliding anchor for mooring a vessel includes a central shank having a weighted forward end and a blade hinged to said shank. The blade is hinged to the shank by means of a pantographic linkage, the rear link being longer than the forward link to provide downward inclination of the blade when in its open position. The blade is provided with a pair of upswept wings extending on either side of the shank which serve to cause the anchor to glide when the blade is deployed in a first position wherein its longitudinal axis lies parallel to that of the shank. These wings are deployed as bottom engaging flukes when the blade is rotated downwards about the hinge to a second open position by a force being applied to the anchor line attached to the rear of the shank.

Abstract: An improved marine anchor that may be quickly assembled or disassembled from its component parts without the use of tools. The compactness of these parts allows for more convenient storage of the anchor components than is available with other anchors. When assembled, the anchor provides great strength and holding ability. Because this anchor is quickly and easily assembled without tools, it is ideal for emergency situations. Since the flukes are removeable, the user can interchange flukes selecting them for their appropriateness to the sea-bed conditions in which he is anchoring.

Abstract: A mooring anchor including a pair of spaced part flukes, an integrally cast tripping palm structure integral with said flukes at the rearward end thereof and including a pair of planar, sloping walls diverting rearwardly from the flukes and first and second pairs of transverse reinforcing walls extending transversely between the sloping walls, an elongated solid stock rotatably received through aligned openings in the reinforcing walls and through the rearward end of a rigid elongated shank having a clevis receiving apertured lug portion at its forward end. The sloping walls of the tripping palm have apertures extending therethrough at positions rearwardly of each surface of each fluke and between the adjacent associated reinforcing walls.

Abstract: An improved marine anchor is disclosed for anchoring a marine vessel with an anchor rode. The anchor comprises a first and a second fluke connected to an anchor stock. An anchor shank has a pivot aperture disposed between a head portion and a tail portion of the anchor shank. The tail portion of the anchor shank may be provided with either an aperture or a slip ring for connecting to the anchor rode. The pivot aperture pivots the anchor shank on the anchor stock in a space between the first and second flukes. The improvement comprises a novel anchor crown secured to the anchor stock to limit the pivotal movement of the anchor shank upon contact of the head portion of the anchor shank with the anchor crown.

Abstract: A double fluke anchor having a pair of flukes lying in a common plane is welded to a crossbar. An elongated stock projecting forwardly of the flukes at right angles to the crossbar and lying in the plane of the flukes is journaled on the crossbar for limited relative rotation. The forward end of the stock is fixed to the forward end of a hairpin shank having its widest dimension at an intermediate point, approximately in the plane of the pivot of the cross bar and converging toward both ends to form a closed loop. A sliding ring connects the anchor line and the hairpin shank and is freely slidable to both ends of the hairpin shank. With this construction, the anchor may be weighed with the flukes lying adjacent the axis of the hairpin shank with the tips of the flukes pointed downwardly.

Abstract: In an anchor the stabilization arms transversely extending in the plane of the flukes are constructed as bars of quadrilateral cross-section having forwardly directed faces forming an acute angle with each other instead of rod-shaped. These bars are so formed that with a considerably smaller length of the stabilization arms the same stabilizing effect is obtained.

Abstract: An improved high efficiency mooring anchor is light-weight and when opera in tandem provides holding capacity equal to or greater than twice the holding capacity of a single anchor. The shank is designed to hold at least 21/2 times the anchor capacity. Hollow streamline flukes are used and stoppers are mounted on the palms at a maximum distance from the trunion located at the apex of the anchor crown.