US2610601A

US2610601A - Anchor

Info

Publication number: US2610601A
Application number: US707556A
Authority: US
Inventors: Thomas R Gardiner
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-11-04
Filing date: 1946-11-04
Publication date: 1952-09-16
Anticipated expiration: 1969-09-16

Description

Sept? 1952 T. R. GARDINER 2,610,601

ANCHOR Filed Nov. 4, 1946 INVENTOQ. 7770/2705 ,8 fiordmer Patented Sept. 16, 1952 if j Tho'mas flie'ncnon a V R." Gardiner, Piedmont, Calif.

Artistes-mama, 4, 194s;sria1 No. 707,556

The present invention relatesto anchorsl'and more particularly to anchors efuthe'twin fluke type. The present invention is an improvement in part over my prior patent for Stop Device For I Anchor Shanks grantedAugust 30, 1949.

An objectof the invention is to'provide a twin fluke anchor of strongand sturdyconst'ruction having greater holding power for its'size."

A further object of the-invention is to provide a twin fluke anchorhaving an improved pivot for the shank of the anchor, so arranged as to increase the strength of the anchor and hold the twin flukes in proper spaced relation.

Another object of the invention resides in the provision of an improved crown for a twin fluke anchor which furnishes a" relatively long bearing stop for the shank and accurately determines the fluke angle between the plane of the fluke blades and the shank axis. r

Still a further object of the-invention is to provide a crown fora twin 'fiuke anchor which is so shaped and arranged with respect to the shank 'pivot and the'center of area of the fluke blades as to offer very little resistance to burial of the blades, and to produce an initial downward'and forward tilt of the blades on the bottom .or ground which will insure positive burial of'the' blades upon the exertion of v suflicient pulling ,Jforce on the shank.

, Several forms which the invention may assume are exemplified in the following description and illustrated by way of. example inthe accompanying drawings, inwhlch: y Fig. 1 is atop plan view of one form of twin fluke anchor embodying the invention.

Fig. 2 is a longitudinal section taken generally alongthe line 2-2 of Fig. l."

Fig. 3 is a partial cross-section taken generally snag, the line 3-3 of Fig. l.

r flanges or arms" 15 integral with blades ll, said armprojecting from the top and bottom faces ofthe blades. If desired, the-flanges or arms l5 may prcjectfrom only one face. Flanges or arms l5 are integrally joined to one another-by a U- 5 Claims. (01. 114-208) shaped member l6 whose arms" extend between the rear blade tabs l8 and 1-9, and whose base 20 holds the arms in spaced relation. 1

The arms I! of the U-shaped member l6 are generally parallel to one another but as shown the flanges l5 themselves diverge slightly in a forward direction beginning from the points of attachment [5a or integration of the flangeswith the blades themselves. The divergent flange portions [5 are bevelled, tapering towards the blade faces in a forward direction, with their front ends merging into the blades in the region of the rounded ends or corners 12.

A pivot pin 2| extends through aligned holes 22 in the parallel flange arms II, the ends of the pin being slotted to fit snugly over the rear tabs I8, [9 on the blades. It is to be noted that the inner edges 23 of the tabs are spaced from the arms I! to permit placing of the holes in the plane of the blades ll. One slot 24 of the pivot pin is substantially longer than the other slot 25, to permit its assembly in the manner to be described hereinafter. The pin 2| is suitably secured, as by welding, to the blade tabs l8, I'9. A shank 26 is mounted on the pivot pin 2| and has a hole 21, or some other suitable means, at its forward end for the attachment of a cable (not shown). This shank is swingable in a plane at right angles to the plane of the blades I I between predetermined limits. A stop for the shank is provided by a generally diamond-shaped crown 28. As shown in the drawings, the crown may be made of one piece, bent to fit over the-top and bottom faces-of the flukes ID with a rear fold 29 integrating the rear sides 30 of the crown. The

' forward sides 3| of the crownare bifurcated to flukes ID in any suitable manner, as by welding with either rear side 30 of the crown.= This angle 'may be accurately fixed since the shank makes a the shank 2E, and through the other arm i! blades l l.

relatively long bearing contact with each rearward side of the crown, as is evident from Fig. 2. It is to be noted that this angle is the same as the angle of inclination of the rear crown sides to the plane of the fiukes.

It is also to be noted that the top and bottom pivot points 34, where the forward and rear sides 30, 3| of the crown merge, and which may rest on the ground, are forward of the pivot pin 2!,

and between the pivot pin and the center of area of the flukes Hi. This arrangement insures an initial forward and downward tilt of the fluke blades H against the ground, in order that the pull taken on the shank 26 will increase the...

angle of tilt of the blades to the ground and cause them to dig in and bury themselves to overboard; Moreover, the relatively large width with respect to the length provides a large fluke area to give the anchor greater holding power.

.It may also be pointed out that the increase of the width with respect to the length of the blades brings the center of the fluke blade area closer to the maximum extent. Thusthe, diamondshape of the crown not only provides such initial forward tilt, but also provides a stop for the shank 26. The fact that the merging point or line 34 between the forward and rearward sides 30, 31 of the crown is relatively narrow insures that the initial pivoting or tilt of theblades will, occur and also insures the maximum burial of the blades since the crown offers very little resistance to such burial.

It has been pointed out above that one of the pin slots 25 is substantially longer than the other pinslot 2 3 to facilitate assembly of the device.

Whensuch assembly tai-ies place, one of the rear tabs l 8 of the fluke blades is bentfrom its normal plane to permit insertion of the pin 21 through the hole 22 in one arm ill of the flange, through of the flange, placing the long slot 25 over the opposing tab Is on the other fluke blade.v The extended length of this slot i9 permits the pin to be moved inwardly until the other short slotted end of the pin'isfreeof the plane of movement of the inner edge'23 of the tab 53. Ihe tab ifs may then be bent back to its initial position coincident with the plane of the fluke blade, where- V the point of pivoting of the shank on the pin 2| or Zia, making the anchor much stronger since upon the pin 2 i may be slidback to positionthe short slot 24 over the repositioned tab 18. Thereafter, the pin may be secured, as by welding, to both tabs, offering support for the tabs and also insuring the appropriate spacing of the fluke The pin 2! assists in resisting any tendency for the flukes ill to alter the angle of divergence between the flanges i5.

, In the embodiment of invention disclosed in Fig. 4,, the fluke blades l i are separate from one another, in view of the omission of the U-shaped rearward. flange portion i6 shown in 1.. The blades are held in proper divergentposition and V in proper spaced relation by the pin Eta itself,

whose slots may be of equal length, since it can be assembled in place without difficulty. Following its insertion through the flange arms lid and shank 28, and with the proper position of its slotted ends over the rear tabs '58, is of the blades, 'the-pin Zia. be securely welded to the tabs. In'addition, the blades i may be held against movement with respect to one another by the welding of the crown fold 2d to the tabs.

In the form of invention illustrated in Fig. 5, the rear sides Sta of the crown merge smoothly into the back 29a of the crown, which is disposed over the base Elia of the flange. The pivot 2i and the rear end of the shank 2e are disposed adjacent the base zoo in order that an extended surface contact may still be obtained between the top and bottom of the shank and the rear sides 36a of the crown. This design and disposition of the crown 28, shank 26' and pin 21 obviate the :fiukes lying generally in a common plane and there is less tendency for the blades H to bend as they are pulled into the ground by the pulling force exerted on the shank 28. 7

It is, therefore, apparent that a strong and sturdy anchor of relatively great holding power for its size has been'providedi The crown arrangement not, only provides for the initial tilt of the blades into the ground, but also predetermines thefluke angle between the shank 2S and the blades H by engagement of the shank with one side 35 of the crown 23.

While ihave shown preferred forms of my invention, it is to be understood that various changes may be made in their construction by those skilled in the art without departing from the spirit of tl' e invention as defined in the appended Claimed V Having thus described my invention, what I claim anddesire to secure by Letters Patent is: 1 An anchor comprising a pair of fluke blades lying generally in a common plane, a pair of arms at the rear of saidblad'es integral with each other and with said blades, a pin extending through. saidarms and having slotted ends fitting over said blades andsecured' thereto, the slot in one pin endbeing substantially longer than the slot in the other end, and a shank pivotally mounted on said pin between said arms and blades;

2; In an. anchor of the type comprising spaced flukes lying generally in a common plane and a shank pivotally mounted therebetween adjacent the rear edges ofthe flukes'for movement in a plane perpendicular to the plane of the flukes, the improvement which comprises a crown constituting a separate element from the ilukes and shank but fixed to the fiukes, said crown being of generally diamond shape, having a base portion embracing the rear edges of the flukes and having legs extending forwardly from the base portion on opposite sides of the flukes and in symmetrical relation thereto, said legs constituting a combinedstop member for the shank and a brace or reinforcement member for the fiukes, and comprising, rear portions diverging forwardly from the base portion to provide said stop member and front portions converging forwardly from the rear portions and terminating at their forward ends adjacent the nukes saidfront portions being bifurcated to allow passage of the shank.

In: an anchor of the type comprising spaced a shank pivotally mounted therebetween adjacent the rear edges of theflukes for movement in a plane perpendicular to the plane of the nukes-the improvement which comprises a con- 5 tinuous, U-shaped flange fixed to and disposed along adjacent edges of the flukes and having a base at the rear edges of said fiukes, and a crown constituting a separate element from the flukes and shank but fixed to the fiukes, said crown being of generally diamond shape, having a base portion which embraces the rear edges of the fiukes and is bifurcated to allow passage of the base of said flange and having legs extending forwardly from the base portion on opposite sides of the flukes and in symmetrical relation thereto, said legs constituting a combined stop member for the shank and a brace or reinforcement member for the flukes, and comprising rear portions diverging forwardly from the base portion to provide said stop member and front portions convergingforwardly from the rear portions and terminating at their forward ends adjacent the flukes, said front portions being bifurcated to allow passage of the shank.

4. In an anchor of the type comprising spaced fiukes lying generally in a common plane and a shank pivotally mounted therebetween adjacent the rear edges of the flukes for movement in a plane perpendicular to the plane of I the fiukes, the improvement which comprises flange members fixed to and lying along adjacent edges of the flukes, a pivot pin passing through said flanges at the rear end thereof and mounting said shank, and a crown constituting a separateelement from the fiukes and shankbut fixed to the flukes, said crown being of generally diamond shape, having a base portion embracing the rear edges of the flukes and having legs extending forwardly from the base portion on opposite sides of the flukes and in symmetrical relation thereto; said legs constituting a combined stop member for the shank and a brace or reinforcement member for the flukes, and comprising rear portions diverging forwardly from. the base portion to provide said stop member and front portions converging forwardly from the rear portions and terminatingat their forward ends adjacent the flukes, said front portions being bifurcated to allow passage of the shank.

5. An anchor comprising: a pair of fluke blades lying generally in a common plane and, being laterally spaced from each other; spaced arms secured to the inner edges of said blades and being joined to one another at one pair of ends; a pin extending through said arms adjacent the juncture thereof; the ends of said pin being slotted and receiving and being secured to the ends of the blades adjacent the juncture of the arms; and a shank pivotally mounted on said pin between-said arms and blades.

THOMAS R. GARDINER.

REFERENCES CITED The following references are of record in the file of this patent: Y

UNITED STATES PATENTS Number Name Date 669,016 Shaw Feb. 26, 1901 2,249,546 Danforth July 15, 19 41 2,279,302 Craig Apr. 14, 1942 FOREIGN PATENTS Number Country Date 8,387 -Great Britain May 15, 1891 14,922 Great Britain Aug. 21, 1900 610,779 Germany Mar. 22, 1935