US2797658A - Antifouling anchor - Google Patents

Description

July 2, 1957 o, DQTY, JR 2,797,658

ANTIFOULING ANCHOR Filed Aug. 51, 1954 Y 2 Sheets-Sheet 1 Oscar A. Dory, Jr

INVENTOR.

July 2, 1957 o. A. DOTY, JR 2,797,658

I ANTIFOULING ANCHOR Filed Aug. 51, 1954 2 Sheets-Sheet 2 Oscar/1. Dory, Jr

INVENTOR.

United States Patent ANTIFOULING ANCHOR Oscar A. Doty, In, Crowley, La., assignor of one-fourth to Oscar A. Doty, Sr., Crowley, La.

Application August 31, 1954, Serial No. 453,218

2 Claims. (Cl. 114-208) The present invention relates to new and useful improvements in antifouling anchors to free the anchor from sunken logs or other obstructions which prevent hoisting the anchor.

An important object of the invention is to provide an anchor for small boats embodying a shaft or shank to which the flukes are pivoted and locked by catch means in a holding position and releasable upon a predetermined pulling force on the anchor rope to swing the shaft in a reverse position relative to the flukes to free the anchor.

Another object is to provide catch means for locking the flukes to the shaft in either a holding or releasing position.

A further object is to provide an antifouling anchor of simple and practical construction, which is efficient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purpose for which the same is intended.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational view;

Figure 2 is an enlarged fragmentary longitudinal sectional view taken on a line 2--2 of Figure 1;

Figure 3 is a side elevational view showing the flukes locked in a releasing position;

Figure 4 is a transverse sectional view taken on a line 4-4 of Figure 1; and

Figure 5 is a side elevational view showing the re leasing action for the flukes.

Referring now to the drawings in detail, wherein for the purpose of illustration, 1 have disclosed a preferred embodiment of my invention, the numeral 1 designates the shank or shaft of the anchor and which includes a rear shaft section 2 and a front shaft section 3. Section 2 is formed with an eye 4 at its outer end for attaching an anchor rope 5 thereto, while the inner end of section 2 is formed with a flange 6 swivelly positioned in a housing 7 to the base 7a of which the outer end of shaft section 3 is welded or otherwise suitably secured. Housing 7 is constructed of a cap portion 7b threaded onto a ring 7c which is welded to the base 7a.

Shaft section 3 is slidably in a cylinder 8 and cap 9 at the rear end of the cylinder and base 7a of housing 7 rests on top of cap 9.

The rear end of the cylinder is closed by a cap 9 and a coil spring 10 is mounted on the shank or shaft section 3 and tensionally adjusted against the cap by a washer 11 and nut 12 threaded on the shank or shaft to project a plunger catch 13 at the front end of shaft section 3 in an outward direction at the front end of the cylinder.

The front end of the cylinder is bifurcated to form a pair of apertured spaced parallel ears 14 in which a pin 15 is pivoted in a transverse position on the cylinder and a pair of anchor flukes 16 are welded or otherwise secured to the outer ends of the pin. A circular cam 17 is also secured to the pin 15 between the cars 14 and is formed with notches 18 and 19 at diametrically opposite peripheral portions of the cam in which the outer end of plunger catch 13 is adapted to selectively enter to provide a catch for locking the flukes in either an anchor holding position, as shown by full lines in Figure 5, or in an anchor releasing position, as shown in Figure 3.

Notch 18 is of an area to permit limited swinging of the flukes from one side of the longitudinal axis of the shank to the other, while remaining locked by catch 13.

Plunger catch 13 is released by a predetermined pulling force subjected to the anchor rope and the releasing movement of the catch is limited by the tension of spring 10. Cylinder 8 may be supplied with a lubricant by means of a filler plug 21 or grease fitting.

In the operation of the device, when the plunger catch 13 is engaged in notch 18, the flukes are locked in a forwardly inclined position with respect to shank or shaft 1 of the anchor, as shown by full lines in Figure 5, in anchor holding position, and should the flukes become fouled with a submerged obstruction, such as indicated at 22, a predetermined pulling force subjected to the anchor rope will release plunger catch 13 and permit shank or shaft 1 and cylinder 8 to swing on pin 15 in a rearward direction, as shown by dotted lines in Figure 5, while the flukes remain stationary, and the plunger catch will then enter notch 19 to lock the flukes in a rearwardly extending position with respect to shank or shaft 1 whereupon the flukes may be pulled free of the obstruction.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. An antifouling anchor comprising a shank composed of an upper shank section and a lower shank section, means connecting said shank sections to each other for longitudinal movement as a unit, said connecting means being fixed to the lower shank section and said upper shank section being swivelly connected to the connecting means for relatively turning movement of the upper and lower shank sections, a cylinder having an open lower end, a plunger catch fixed to the lower shank section and slidable in the cylinder, a keeper rotatably supported at the open lower end of the cylinder, a pair of anchor flukes secured to the keeper for swinging into either an upwardly inclined anchoring position or into a downwardly extended releasing position, said keeper having a pair of notches in the plane of the longitudinal axis of the flukes and selectively engaged by the plunger catch to lock the flukes in either of said positions, and spring means in the cylinder behind the plunger catch to lock the latter in either of said notches.

2. An antifouling anchor comprising a shank composed of an upper shank section and a lower shank section, means connecting the upper and lower shank sections to each other for longitudinal movement as a unit, said connecting means being fixed to the lower shank section and said upper shank section being swivelly connected to the connecting means for relative turning movement of the upper and lower shank sections, a cylinder having an open lower end, a pin rotatably mounted in a transverse position in the lower portion of the cylinder Patented July 2, 1957 3 4 and projecting outwardly at opposite sides of the cylinder, positions, and spring means in the cylinder behind the a pair of anchor flukes fixed to the respective end porplunger catch to lock the latter in either of said notches. tions of the pin for swinging into either an upwardly inclined anchoring position or into a downwardly ex References Cited in the file of this patent tended releasing position, a diametrically enlarged keeper 5 UNITED STATES PATENTS fixed to the pin between the fiukes, said keeper having a pair of notches therein in the plane of the longitudinal i if axis of the flukes, a plunger catch fixed to the lower shank 29357 6W 1' 1 section and slidahle in the cylinder and selectively en- 7 Jones Fe I 2 953 gaged in said notches to lock the flukes in either of said 10

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