US2870732A - Anchor boom assembly - Google Patents

Description

F. c. GOOD ANCHOR BOOM ASSEMBLY Jan. 27, 1959 2 Sheets-Sheet 1 Filed May 16, 1957 INVENTOR. FredC.Good. BY

Attorneys Jan. 27, 1959 v F. (2-. GOOD 2,870,732

' ANCHOR BOOM ASSEMBLY v Filedllay 16, 1957 2 Sh'ets-Shet 2 Fie. 5

IN V EN TOR.

I Fr edC.Good

.Aii-orneys United States ANCHOR BOOM ASSEMBLY Application May 16, 1951, Serial No. 659,625

6 Claims. (Cl. 114-210) This invention relates to anchor booms and more particularly to anchor handling devices of the type which are particularly adapted to use on pleasure craft. While the principles of the invention herein disclosed are applicable to almost any size boat or ship, the invention was primarily developed for pleasure craft in the 20 to 50 ft. class.

It is always a problem in the handling of small boats to either lower or raise the inchor in rough seas. Many accidents have taken place due to persons trying to maintain their balance on the wet forward deck of a small boat while either taking in or lowering an anchor. Ac

cordingly, it is an object of the present invention to provide a means for lowering and raising an anchor from the cockpit of the boat.

It is .a further object of the present invention to provide an anchor boom supporting means pivotally mounted to the deck in such way that the anchor will always clear the sides of the boat during the raising and lowering operations.

It is a further object of the present invention to provide an anchor boom which is pivoted in both the horizontal and vertical planes in order that the boom may follow movements of the anchor and line, and may also be swung inboard in order to secure the anchor on the deck.

Other objects and advantages of the present invention will become apparent from the following detailed specification read in connection with the attached sheets of drawings, in which:

Fig. l is a top plan view of the boom;

Fig. 2 is a side elevation of the boom mounted on the forward deck of a boat;

Figure 3 is a sectional view taken on the lines 3-3 of Fig. 2;

Fig. 4 is an enlarged top plan view of the rear end of the boom and latching assembly;

Figs. 5 and 8 are top plan views of two of the plate assemblies used in mounting the boom on the deck;

Fig. 6 is a side elevation showing the boom raising means and further showing the boom in its raised position;

And Fig. 7 shows in side elevation the position which the boom is free to assume during lowering of the anchor.

Referring first to Figs. 1 and 2 of the attached drawings, it will be seen that the boom comprises essentially an upwardly facing. tapered channel member 10 which is elongated in its general outline and includes a bridge 11 closing the upper rear end of the channel. At the outer end of the boom, there is mounted a roller 12 over which the anchor line 13 runs. A stop member for the anchor in the form of a ring member 13A is also afiixed to the outer end of the boom in any convenient manner. As shown most clearly in Fig. 2, the means for mounting the boom on the deck of a boat include a pair of superimposed plates 14 and 15. The lower of these two plates 14 is fixedly secured to the deck of the boat in any desired manner. As shown in Fig. 2, a pair of bolts, the

atent 2,870,732 Patented Jan. 27, 1959 heads of which are received in countersinks below the upper surface of the plate, are used for this purpose. The upper plate member 15 is pivotally connected to the lower plate member adjacent the forward or outboard ends of each. The pivotal connection may be a simple hinge pin 16, as shown in Fig. 2. The rear end of the boom is pivotally mounted by a pin 17 to a block member 18, as shown most clearly in Figs. 2 and 6. This block member includes a downwardly extending collared bushing 19 also shown in Figs. 2 and 6. The collared portion of this bushing is received in an opening 20 in the lower plate member. The opening 20 is somewhat larger than the diameter of the bushing 19. Likewise, the opening 21 in the upper plate member through which the remainder of this collared bushing 19 extends, is also larger than the diameter of the bushing.

By reason of the structure thus far described, it will be apparent that the boom 10 and the block member 18 may move as a unit longitudinally with respect to the upper and lower plate members. The extent of this linear motion is fixed by the diiference in the size of the openings in the plate members and the diameter of the bushing. It will also be apparent that the boom and block member may be rotated about a vertical axis drawn through the center of the collared bushing.

Depending from the lower surface of the boom 10, there is shown in Figs. 2 and 6, an L-shaped catch member 22, the purpose of which will now be described.

The front portion of the upper plate member is stepped upwardly, as shown at 23 in Figs. 2, 6, 7 and 8, and extends outwardly beyond the pivot 16. That portion 24 which extends outwardly of the pivot has an opening therein in the form of a transverse slot 25A. The slot is slightly curved, as shown in the top plan view in Fig. 8, and this slot is adapted to receive the catch member 22 which is afiixed to the under side of the boom 10.

The pivoted lever arm 25 shown in Figs. 1, 2, 6 and 7, serves a double purpose. First" of all, it serves as an operating means to lock the boom in its position as shown in Fig. 2, and secondly, it serves as an operating means to raise the boom to the angle shown in Fig. 6, in order that the boom may be rotated on its vertical pivot 19 and swung inboard. The lever arm is rigidly connected to a shaft 26 which is journaled in the block member 18. The journal is cut away intermediate its ends, as shown in Fig. 4, in order that the shaft may have attached thereto a cam member 27. This cam member is also shown in Figs. 2, 4 and 6. The lowered and locked position of the boom shown in Fig. 2 illustrates how the cam member engages with a fixed abutment 28 which protrudes upwardly from the upper surface of the upper plate, in order to earn the boom rearwardly of its mounting.

Referring now particularly to Fig. 3, the means for latching the rear end of the boom in a horizontal position is shown. This means is a simple sliding catch 30 which, in its innermost position, as shown in Fig. 3, engages with the collar of the bushing member 19. When this latch member is pulled outwardly, the boom and upper plate are then free to pivot about the pin 16, so that the boom may assume the position shown in Fig. 7 or any intermediate position.

The following description of the operation of this apparatus should be clear in view of the foregoing detailed description of the structural features. Let us assume that the anchor has been raised until it is immediately adjacent the outer end of the boom abutting thestop ring 13A,

and further assume that all parts are in the position shown in Fig. 2. In this position, the boom is rigidly held at its point of forward contact with the upper plate member by means of the catch 22 which is locked into the slot 25A. The rear end of the boom may be locked in this position by means of the latch member 30, so that the two plate members 14 and 15 are also held in engaging position, and the upper plate is not free to rotate about the pivot 16. It is not necessary under ordinary conditions, however, to lock the. rear end of the boom with the sliding latch 39. Tension of the. anchor line 13 is sufficient to hold the, rear end of the. boom down when the anchor is fully raised. For this reason, all raising and lowering of the. anchor can be. done without the. necessity of leavin the. cockpit.

With the boo-m in the position shown in Fig. 2 and with the. anchor fully raised, it is entirely feasible to cruise, as the length of the boom positions the anchor clear of the hull and the boom will not bounce due to motion of the seas, in view of its forward locking point and the anchor linel tension. If at this point it is desired to swing the anchor inboard for storage purposes, the first step would be to raise the lever to a point which will allow the cam 2.7 to clear the fixed abutment 28, The boom may then be slid forwardly so that the locking portion ofthe forward latch 22 will be, positioned to be withdrawn through the slot 25A in the upper plate member. Further rotation of the lever 25, to the position shown in Fig. 6, cams the boom upwardly about its rear horizontal pivot 17. The boom may then be manually rotated 180, more or less about the vertical axis of the bushing member 14, to position. the anchor above the deck.

. Let us again assume the same starting point with the necessary to release the anchor line and the length of the boom will insure that the anchor falls clear of the, hull. In, order to raise the anchor, it is only necessary to retrieve the line. As the anchor line is taken in, the boom will assume a position in which it substantially points to the direction from which the anchor is being retrieved. Note particularly that during this operation, the boom remains fixed in longitudinal position with respect to the upper plate member because the lever 25 maintains its relative position with respect to the boom and the cam member 27 therefore remains in engagement with the fixed abutment 28. The boom and upper plate member, however, will be free to pivot about the forward pivot point 16 and further, the boom will have a limited amount of swinging motion about the axis of the bushing member. The extent of this swinging movement is limited by the lateral dimension of the slot 25A in the forward end of the upper plate member. With the boom in the position shown in Figure 7, therefore, it can swing from side to side in. order that it may follow the anchor on either the port. or starboard side of the bow as the case may be.

. Another feature of the present invention is that the forward pivot pin 16 may be made of a material which willv shear under predetermined stress, and thus release the entire boom and upper plate assembly. This is desirable in the event'that the anchor or anchor line should becomefouled in the wheel. The shearing strength of the pivot pin may be set so that this pin will shear before any damage is done either to the anchor, the Wheel, the line, or the bow of the boat. As the anchor in being retrieved clearsthe surface of the water, the boom will begin to tilt in a counterclockwise direction, as viewed in Fig. 7, due to tension on the anchor line. When the anchor is fully raised, the boom will be in a horizontal position and held in such position by tension in the anchor line. The sliding latch 30 may then be pushed inwardly. to lock the assembly in place if desired.

From the foregoing, it will be apparent that there is herein shown andv described a novel and useful anchor boom assembly which can be used to great advantage on boatsof awide variety of sizes.

While a preferred embodiment has been shown and de-.

scribed, applicant claims the benefit of a full range of equivalents within the scope of the appended claims.

I claim:

1. An anchor boom assembly for mounting on the deck of a boat, comprising in combination: An elongated boom member over which the anchor line passes; a base plate member rigidly secured to the deck of the boat; an upper plate member overlying said base plate and hinged thereto at the outboard end thereof, the hinge being in the horizontal plane transversely of the boom; meansforming a hinge connection betweent-heinboard end's'of said boom and said upper plate member, the axis of the hinge lying in a horizontalplane transverselyiof theshoom; and means forming a pivotal connection between the rear inboard end of said boom and the upper and lower plate members, the axis of the pivot being in the vertical plane; whereby the boom and upper plate may pivot about a horizontal axis to. substantially parallel the anchor line during the lowering and raising. operations,

2. The assembly defined by claim 1, and including means carried by the boom and the lower plate member for releasably locking the upper and lower plate members, to prevent pivotal movement therebetween.

3. The assembly defined by claim 1 including means carried by the boom for engaging the outboard end of the upper plate for releasably locking the boom to thC'Olltn board end of the upper, plate member.

4. The assembly as defined by claim 1 and including cam and lever meanslocated between and carried by the. boom and the upper plate member for raising the out board end of the boom by pivoting said. boom about the hinge connection between the inboard end of the boom: and theupper plate member. I

5. An anchor boom assembly for mounting, on: the deck of a boat, comprising in combination: An elongated boom member over which the anchor line passes; abase: plate member rigidly secured to the deck of the boat-gen. upper plate member overlying said base plate, hinged thereto at the outboard end thereof with, the hinge in the horizontal plane, said upper plate. including an outboardportion stepped upwardly and outwardly and having-a slot extending transversely of the steppedlportiom means.

forming a hinge connection between the inboard ends ;of

said boom and said upper. plate member, the axis. ofithe hinge lying in a horizontal plane transversely of the; boom; means forming, a pivoted connection: on averticalg axis between the inboard end of said boom. and the upper: and lower plate members, there being sufii'cient clearance between the parts of said, connection to permita limited rectilinear movement between said vboom.andsaidi upper plate. member; a latch member dependihgftorn the under surface of the boom to be receivable in the slot ofisaid stepped portion of said, upper plate. member, said latch including a hooked portion to lock saidtboomtothesaidi upper plate member whensaidfboom' is moved. rearward-1y with respect thereto; and means carriedby the. boom and upper plate member for positively. holding said-.boomain its rearward position so to position the hooked portionof said latch member behind said slot and beneath said upper plate member.

6. The combination defined by claim 5 and including means carried by the boom and lower plate member for releasably locking the upper and lower plate members,.to. prevent pivotal movementtherebetween.

References titted in the file of this patent UNITED- STATES PATENTS 2,333,836. Whitney Nov. 9 1943' 2,661,711 Evans Dec. 8 195'5 2,734,475 Fyock Feb. 14', 19 56

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