US2564801A - Hoisting apparatus - Google Patents

Description

Aug. 21, 1951 F, L 00K 2,564,801

HO ISTING APPARATUS Filed Sept. l2, 1947 A rmancx Patented Aug. 21, 1951 Application september 12, 1947, serial No. 7'73-,68'2 In Australia October 16, 1946 l13 Claims. l

This invention relates to hoisting apparatus, particularly anchor raising and hoisting mechanism for marine craft, such as motor boats, launches and the like.

The Operation of moving an anchor inboard onto the deck of a small vessel after same has been raised clear of the water is generally diflicult and inconvenient, and the object of the present invention is to provide simple, effective and convenient means for this purpose;

Accordingly the invention resides briefly inv apparatus comprising a hoisting arm secured to and extending outwardly from a rotatable member. means at the outer end of said arm for supporting an anchor chainv or cable, and means operable to impart angular movements tc said rotatable member, said rotatable member having its axis inclined at substantial angles to both the vertical and horizontal planes whereby as said rotatable member together with said armv is turned through an angle upto 180, the free end of said arm is raised or lowered and is simultaneously moved rearwardly or forwardly with 1re--` spect to the inner end` thereof.

Preferably the said. hoisting arm is disposed substantially horizontally when the free end thereof occupies its lowermost position, and is disposed at a small angle to the vertical plane when said free end occupies its uppermost posie tion, the axis of the rotatable member for this l purpose being inclined at an angle of somewhat more than 45 to the horizontal plane.

More particularly the said rotatable member is preferably arranged somewhat rearwardly of the bow of the vessel with the axis thereof inclining upwardly and forwardly at an angle of say about 50 to the horizontal plane; and said hoisting arm is secured: to said rotatable mema ber so that it extendsl outwardly therefromfwithian angle of about 50 between it-'and the upward extension of the inclined axis. Thus when theY saldiv arm projects forwardly, i. e. towards the bows', it is disposedv substantiallyV horizontally, while when sameV is turned throughV an angle of 180' it inclines upwardlyY and rearwardly at an angle of about to thevertical plane;

Preferably the anchor chain oi cable extends outwardly from driving means rotatably' supported on the rotatable member and passes over' a roller guide at the free end ofthe arm; `l="refe`rably the said rotatable member is hollow', whered by the chain'may pass downwardly therethr'ouglfi'y to achain locker. Y l Y v Manually or power operated meansar'e profl vided for actuatingsaidirotatable driving means and alsol for rotating s'aid inclined member and arm thereon.

Means are also provided for locking the free end of the arm to` the bowsprit adjacent to but somewhat in advance of the bows or to any other convenient portion o f the vessel whensaid arm occupies its aforesaid horizontal forwardly extending position.

Other features of the invention are hereinafter described. For a more particular description of preferred forms of the invention reference will be made to the accompanying drawings in which: l

Figure 1 is a view in side elevation and partly in section of the hoisting apparatus mounted on the forwardV portion of the deck of a small vessel.- 1 Figure 2 is a View in sectional plan and' is taken on the line 2-2 of Figure 1. v

Figures 3 and 4 are sectional views taken on the lines 3--3 and 4; 4 respectively in Figure l.

Figure 5 is a diagrammatic view in plan'showing' the pathl of movement of the outer Vend of the hoisting arm relatively to the bows of the vesseL. and

Figure 6 is a view similar to Figure 1- and shows a modification. c Y l n l The apparatus'shown inFigures 1Vy and 2 comprises a tubular bearing I0 provided with a base plate II by rwhich it is secured centrally to the central portionV of the deck I2 of avessel somewhat rearwardly of the bows I3 thereof,A the axisof said tubular bearing I0 being inclinedY upwardly and forwardly at an angle of about 50 to the horizontal plane. The upper end of the bear'- ing propects above'the ,deelrlevelgwhile the lower end thereof extends into a chainlocker below the deck.

A hollow spindle Iltis rotativel'y mounted in the inclined bearing I0 and projects at its opposite ends therefrom,` the upper endV off said spindle being formed witha collar I4" which serves as an element of a'thrusrrbearing.U A relatively large bracket IE is detachably secured to the upper end of the spindle and the base thereof is formed with a hole which registers with the central passage in the hollow spindle |41y The projecting lower end of the spindle Illy is fitted with a gear wheel I6which is' engaged by a pinion I1 connected' by worm and worm wheel reductiong'earing |8to an electric motor I9 suitav ably Supported belowthe" deck. the saidV gearing being accommodated' in a' housing Il` secured' to the xed bearing' IllA Th-Usby' operation of the (motor, which is controlled by a conveniently together with the bracket I5, is turned about its axis.

A straight hoisting arm 2I is secured rigidly at its inner end to a lower portion of the bracket I and extends outwardly therefrom at an angle of about 50 to the upward extension of the upwardly and forwardly inclined axis of the hollow spindle I4. The free end of the arm is also preferably connected by a tie rod 22 to an upper portion of the said bracket, as shown.

Thus when the hoisting arm 2l projects forwardly from the spindle I4 along the centerline 0f the vessel, it is disposed horizontally as shown in full lines in Figure 1, and same is of such length that its free end then projects somewhat beyond the bows I3 and rests close to but rearwardly of its free end on a suitable support at or about the stem of the vessel.

If, now the inclined spindle I4 is turned through an angle of 180, it will be apparent that the free end'of 'the hoisting arm'is moved in a semi-circular path 23, the plane ofl which inclines upwardly and rearwardly at an angle of about 40 to the horizontal plane, such free end being thus swung outwardly and rearwardly to one side of the vessel, and then inwardly and rearwardly, and at the same time is progressively raised. In its final position, therefore, the said arm extends upwardly and rearwardly at an angle of only to the vertical plane, as shown in broken lines in Figure l.

The said free end of the hoisting arm is fitted with a flanged roller 24 over which the anchorchain 25 passes, and the length of the arm is such that when same is disposed in its last mentioned approximately vertical position, the height of the said roller above the deck is somewhat greater than the length of the anchor 26.

If desired, the said roller 24 may be attached to the arm 2l by a swivelling holder (not shown) which is movable angularly about the Vaxis of the arm so that the axis of the roller will be maintained horizontal by the weight of the anchor as the arm is moved angularly as above described.

The anchor-chain 25 extends inwardly along the hoisting arm from the roller 24 and passes below a guide roller 35 rotatively supported on the inner end portion of said arm and then ex-` tends partly around a chain-wheel 21 from which it passes downwards through the hollow inclined spindle IIJ into the chain locker.

The chain wheel 21 is secured to a transverse spindle 3l rotatively supported in bearings in the bracket I5, said spindle being connected by toothed reduction gearing 28 and chain and sprocket gearing 29 to an electric motor 30 mounted on the said bracket.

The said gearing and the motor 30 are suitably encased to prevent ingress of water and the conductors for said motor preferably extend downwardly through the hollow spindle I4 and outwardly through a radial hole somewhat above the lower end thereof and from which they are led to a source of power and a conveniently located reversing switch.

The chain wheel 21 is also rigidly tted with a ratchet wheel 36 which is engageable' by a pivoted pawl (not shown) to prevent retrograde movements, said pawl being manually releasable when required. Thus the chain is firmly held by the chain wheel when the anchor is dropped and the vessel is pulling thereon.

Accordingly, by operation -of the motor 30 the chain 25 may be taken in or payed-out to raise or lower the anchor. In the event of'v failure of the motor 30 or of the power supply therefor, the chain-wheel 21 may be turned by means of a hand-crank 50 which is attachable to a spindle 5I provided with a pinion 52 in constant mesh with the gear wheel on the spindle 3I, the outer end of the crank spindle being normally covered by a detachable cap as shown in Figure 3. Preferably a rope drum 33 for warping and other like purposes is secured to one end of the spindle 3| of the chain wheel 21.

If desired, the chain wheel 21 may be connected to the spindle 3I by a free wheel device (not shown) which permits said chain-wheel to turn freely thereon in one direction. Alternatively both the chain wheel 21 and the drum 33 may be rotatively mounted on the spindle and provided at their adjacent ends with dog clutch teeth for alternative engagement with an intermediately disposed dog clutch member slidably but nonrotatively mounted on the spindle.

In use the anchor 26 is dropped and raised,

while the hoisting arm 2I occupies its forwardlyv extending horizontal position (shown in full lines in Figure 1 at which ,time the free end portion of said arm is suitably secured by a spring actuated pivoted locking arm or other means, such as a pin 4ll,vtothe bowsprit or other suitable support 4I adjacent the bow of the vessel. Preferably a pivoted locking arm (not shown) is employed for this purpose whereby same may be released from remote position by a pull cord.

If desired, the support 4I may be extended on one or both sides of the bows and arranged in the oblique plane of movement of the coacting portion of the arm 2|, as indicated in Figure 5.

When the anchor is fully raised with `the arm in such horizontal forwardly extending position, its upper end is disposed just below the roller 24 at the free end thereof. then be moved inboard onto the deck of the vessel and behind the base I I of the hoisting apparatus by starting the motor I9 to cause the inclined spindle I4 together with the said hoisting arm to be turned through an angle of `about at the end of which movement the-said arm extends upwardly and rearwardly at a small angle to the vertical plane, as shown in broken lines in Figure 1.

Thus the anchor is first swung outwardly and rearwardly from the bows .and then inwardly and rearwardly and is progressively raised until finally it is located immediately behind the base of the device and somewhat above the deck, the path of such movement when viewed in plan being shown in Figure 5.

The anchor-chain 25 is then payed out to drop the anchor onto the deck or through a hatch into a suitable space therebelow, the arm being then returned to its normal horizontal forward position. For example the chain may be payed out until the lower end of the anchor 26 rests on the deck after which the hoisting' arm may be moved forwardly to some extent whereby it swings outwardly, forwardly and downwardly to lay the anchor on the deck at the corresponding side of the base.

It will be understood from the foregoing description that it is not essential that the hoisting arm be capable of rotation through an angle of 180, as movement through a somewhat smaller angle will suiice for the performance of the described operations. However, it is preferred` that the said arm be capable of rotation through approximately 360 so that theY anchor may.

The anchor may dropped on either the port or starboard side. of

the vessel as required.

Preferably the control switches for the motors I9 and 30 are of watertight construction and adapted for foot operation and are located in any convenient positions, the hands of the operator thus being free to enable him to hold on to the vessel when raising, lowering or swinging the anchor in a rough sea.

It will be evident that if desired the abovementioned electric motors I9 and 3i) may be replaced by hydraulic ror othersuitable motors.

In lieu of arranging the chain-wheel 21, motor 30 therefor and an intermediate gearing on' the bracket I above the upper end of the hollow spindle I4, same may be arranged below the lower end ofk the said spindle and within the chain locker. Thus the chain-wheel -21 may be rotatively mounted on a fixed support below the deck, but in order to obviate twisting of the chain Within the spindle I4, said chain wheel is preferably supported rotatively on a further bracket 45 secured to the lower end of the spindle I4, as shown somewhat diagrammatically in Figure 6. The bracket 45 also carries the driving motor and reduction gearing for the chain wheel.

When this lastmentioned construction is employed, a guide roller t6 for the chain is mounted on the bracket I5 above the spindle Id, as shown, and the size of this bracket is considerably reduced.

The apparatus, therefore, is compact, and does not form an inconvenient obstruction on the forward part of the vessel, while moreover it is simple and convenient to operate whethermanually or by power, and obviates the difficulty, inconvenience and occasional danger involved in manually lifting an anchor inboard in the commonV manner.

I claim:

l. Hoisting apparatus for purposes of the kind described comprising an inclined spindle supported for angular movements about its axis, a hoisting arm supported on and extending outwardly at an angle from said inclined spindle,v means operable to impart angular movementsl to said inclined spindle and said hoisting arm thereon whereby the free end of the latter is moved through an obliquel arcuate path, meansI on and adjacent to the free end of the hoisting arm for supporting and guiding a flexible member, rotatable means mounted on and adjacent the axis of said inclined spindle and adapted for driving engagement with said flexible member, and means operable to actuate said rotatable driving means to take-in orfpay-out the said flexible member.

2. Hoisting apparatus for purposes of the kind descibed comprising an inclined tubular spindle supported for angular movements about its axis, a. hoisting arm supported on and extending outwardly at an angle from said inclined spindle,l

means operable to impart angular movementsto said inclined spindle andv said hoisting arm thereon whereby the free end of the latter is moved through an oblique arcuate path, means on and adjacent to the free end of the hoisting arm for supporting and guiding a flexible member, rotatable means mounted, on and adjacent the axis of said inclined spindle and adapted for driving engagement with said flexible member, said rotatable means being disposed above the upper end of the inclined tubular spindle to'permit said flexible member to extend downwardly through` the latter, and means operable to. actuate saidy rotatable driving means to take-in or pay-out the said flexible member.

3. Hoisting apparatus for purposes of the kind described comprising an inclined tubular spindle supported for angular movements about its axis. a hoisting arm supported on and extending outwardly at an angle from said inclined spindle, means operable to impart angular movements to said inclined spindle and said hoisting arm thereon whereby the free end of the latter is moved through an oblique arcuate path, means on and adjacent to the free end of the hoisting arm for supporting and guiding a flexible member, rotatable means mounted on and adjacent the axis of said inclined spindle and adapted for driving engagement with said flexible member, said rotatable means being disposed below the inclined spinidle whereby said ilexible member may pass upwardly through the latter, guide means for said ilexible member mounted on and disposed above said inclined spindle and adjacent the axis thereof, and means operable to actuate said rotatable driving means to take-in or pay-out the said ilexible member. Y

4. Hoisting apparatus for purposes of the kinddescribed comprising an inclined spindle supported for angular movements about its axis, a hoisting arm supported on and extending outwardly at an angle from said inclined spindle, means operable to impart angular movements to said inclined spindle and said hoisting arm thereon whereby the free end of the latter is moved through an oblique arcuate path, means on andr adjacent to the free end of the hoisting arm for supporting and guiding a flexible member, rotatable means mounted on and adjacent the axis of said inclined spindle and adapted for driving engagement with said ilexible member, and power means operable to actuate said rotatable driving means to take-in or pay-out the said flexible member, said power means being supported by said inclined spindle. Y

5. Hoisting apparatus for purposes of the kind described comprising an angularly movable tubular spindle, means supporting said spindle with its axis inclined at an angle in the vicinity of to the horizontal plane for angular movementsabout its axis, a hoisting arm supported on said spindle and extending outwardly therefrom at an acute angle with the upward extension of said' inclined axis, means operable to impart angular movements to said inclined spindle and said hoisting arm thereon whereby the free end of the latter is moved through an oblique arcuate path, means on and disposed adjacent to the free end of the hoisting arm for supporting and guiding a flexible member, rotatable means arranged adjacent the axis of said inclined spindle and adapted for driving engagement with said flexible member, and means operable to actuate said rotatable driving means to take-in or pay-out the said flexible member.

6. Hoisting apparatus for purposesof the kind". described comp-rising a bearing vadapted to be secured to a support with its axis disposed at an angle approximately midway between the,l horizontal and vertical planes, a hollow spindle movable angular-ly in said bearing, a hoisting, arm connected to said spindle above the said bearing whereby said arm is movable angularly'4 in unison with the spindle, said arm being substantially straight andI disposed at an acute angle,- to the upward extension of the axis of the spindie, gearing operatively connected with and operable to impart. angular movements. tof the:

spindle, means mounted on Vand vadjacent theV outer end of the hoisting arm for supporting and guiding a chain or other flexible member, driving means rotatively carried by said spindle and arranged above the central passage thereof, and gearing operatively connected with and operable to rotate said driving means to take-in or pay-out the said chain or other flexible member.

'7. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support with its axis disposed at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a head member secured to the upper end of said spindle, a hoisting arm connected to said head member whereby it is, movable angularly in unison with the spindle, said arm being substantially straight and disposed at an acute angle to the upward extension of the` axis of the spindle, gearing operatively connected with and operable to impart angular movements to the spindle, means mounted on and adjacent the outer end of the hoisting arm for supporting and guiding a chain or other flexible member, driving means rotatively supported on said head member above the central passage in said spindle, and gearing operatively connected with and operable to rotate said driving means to take-in or pay-out the said chain 01 other flexible member.

8. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support with its axis disposed at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a head member secured to the upper end of said spindle, a hoisting arm connected to said head member whereby it is movable angularly in unison with the spindle, said arm being substantially straight and disposed at an acute angle to the upward extension of the axis of the spindle, gearing operatively connected with and operable to impart angular movements to the spindle, means mounted on and adjacent the outer end of the hoisting arm for supporting and guiding a chain or other flexible member, driving means rotatively carried by said head member and arranged above the central passage in said spindle, power means supported on said head member and, gearing interposed between said power means and said driving means whereby the latter is operable to take-in or pay-out the said chain or other exible member.

9. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a hoisting arm connected to said spindle above the said bearing whereby said arm is movable angularly in unison with the spindle, said arm being substantially straight and disposed at an acute angle to the upward projection of the axis of the spindle such that said arm is substantially horizontal when same is disposed in its lowermost position, gearing operatively connected with and operable to impart angular movements to the spindle, means mounted on and adjacent the outer end of the hoisting arm for supporting and guiding a chain or other flexible member, driving means rotatively carried by said spindle and arranged above the central passage in said spindle, gearing operatively connected with and operable to rotate said driving means to take-in or pay-out the said chain or other flexible member, and means spaced from said spindle to support the free end portion of said hoisting arm when the latter is disposed at or adjacent its lowermost position.

10. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a hoisting arm connected to said spindle above the said bearing whereby said arm is movable angularly in unison with the spindle, said arm being substantially straight and disposed at an acute angle to the upward projection of the axis of the spindle such that said arm is substantially horizontal when same is disposed in its lowermost position, gearing operatively connected with and operable to impart angular movements to the spindle, means mounted on and adjacent the outer end of the hoisting arm for supporting and guiding a chain or other flexible member, driving means rotatively carried by said spindle and arranged above the central passage in said spindle, gearing operatively connected with and operable to rotate said driving means to take-in or pay-out the said chain or other flexible member, means spaced from said spindle to support the free end portion of said hoisting arm when the latter is disposed at or adjacent its lowermost position, and means operatively connected with and operable to lock said hoisting arm to said last mentioned supporting means.

11. Hoisting apparatus according to claim 9 wherein said lastmentioned supporting means is of arcuate formation and is disposed in the plane of rotation of said coacting free end portion of the hoisting arm.

l2. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support with its axis disposed at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a hoisting arm arranged above said bearing and secured to said spindle whereby a fiexible member may be arranged to pass upwardly through said spindle and outwardly along said arm, said arm being substantially straight and disposed at an acute angle to the upward extension of the spindle axis, a bracket secured to the spindle below said bearing therefor, rotatable driving means supported on said bracket for engagement with said flexible member, means arranged above said bearing to guide said flexible member, power means supported on said bracket and operable to actuate said rotatable driving means to take-in or pay-out said flexible member, and power means operable to impart angular movements to said hollow spindle and hoisting arm 13. Hoisting apparatus for purposes of the kind described comprising a bearing adapted to be secured to a support at an angle approximately midway between the horizontal and vertical planes, a hollow spindle movable angularly in said bearing, a head bracket secured to the upper end of the spindle and disposed above said bearing therefor, a hoisting arm connected to said head bracket whereby said arm is movable angularly in unison with the spindle, said arm being substantially straight and disposed at an acute angle to the upward projection of the axis of the spindle, gearing arranged below said bearing and operable to impart angular movements to the spindle, means mounted on and adjacent the outer end of the hoisting arm for supportingl and guiding a chain or other flexible member,

driving means rotatively carried by said head. 5 bracket and arranged above the central passage` in said spindle, gearing supported on said head bracket, said gearing being operable to rotate said driving means to take-in or pay-out the said chain or other iiexible member, and a winding drum rotatively supported on said head bracket and operable by said lastmentioned gearing.

F. L. COOK.

1o f REFERENCES CITED The following references are of record in the le of this patent:

' UNITED STATES PATENTS

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