US1297276A - Ship-davit. - Google Patents

Description

J. F.' WADDINGTON.

SHIP DAVIT.

APPLI'CATION FILED JAN. 12. 1913.

Patented Mar. 11, 1919.

v 4 z H 3 mm a m O "0 c a: u 4 O M f m i JamesFrank/in WaaU/ngfan,

-UNITED STATES PATENT OFFICE.

In W WADDING'ION, OF BEVERLY, NEW JERSEY.

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1,297,276. specification or mm Patented Mar-'11, 1919. Application filed January 12, 1918. Serial llo. 211,594.

To allanlolu't may concern: reference denote corresponding parts in all Be it known that I, Janus Fmmxnm Wmarmr, a subject of the King of England, at Perkins Lane, Beverly, 1n

Etheeounty B andStateofNew Jimmy, have invm new and useful Improvements in Ship-Davits, of which the folowing is a specification.

The invmtum' relates tglboats and1 more Elam lad to raising" an owe evices shi? ind has for an object tib rovide davits r conveniently su porting li e boats orotherlife-avingparap on or adjacent to the deck or side of the ship, where the be 011:; off the way vliilen nog m use, capob 0 being rea y an efiectively moved'into position for use for damsmg' orlowermg' life-savm' g boatsor other vices. Among other features, the invention comprehends the provision of davits which will notonlysupportthelifeboat or the like in an out-of-the-way position when the same is not in use and permit of swinging the life boat into position where it can be conveniently and quickly lowered, but the operation of moving the life boat from its normal totheplace orspotwhere it isto be owered de of the ship is one that can be quickly and effectively accomplished, with a minimum amount of work and labor, amiwiththeasurancethattherewillbe no hitch in the operation, so that in an emergency, or otherwise, the desired operation can be accomplished without mishap. I am aware that various forms of ship dlvits have been med heretofore and are in use at the present time, and with these in mind I have produced ship davits which will accomplish the result for which they are intended much more efiectively and with less labor. Furthennore, I aim to provide ship devils which can be more cheaply constructed and more readily assembled and placed in position for use, than some other forum of known shi davits.

In the further d sclosure of the inventionrefermeeistobehadtotheaccompanying drawing, constituting a part of this specification, in which similar characters of the views, and in which- Figure 1 is a fragmentary end view show- 1ng a hfe boat supported by my .form. of V dav 1ts, on the deck of a shi the full lines 55 lndicatmg the normal position of the boat and davits, and the dotted lines the position of the boat and davits when the same are swung outward beyond the side of the vessel.

Fig. 2 1s a fragmentary side elevation with parts in section, showing the arrangement of the davits and the bracing therefor, the operatmdg mechamsm of this view being remove Fig. 3 is a substantially horizontal sectional view, slightly enlarged, taken on the line 33 of Fig. 1, and I Fig. 4 is a longitudinal sectional view taken on the line 44 of Fig. 1, the view being slightly enlarged.

Referrm more particularly to the views, the numera 10 indicates the deck of a vessel 11 and the numeral 12 a side of the vessel, while the numeral 13 indicates one of the uprights or main elements of the 76 davits, it being understood that a plurality of these uprights is of course employed, although a single-operating mechanism is preferably used. For this reason I will describe merely one of the uprights and the 80 single-operating mechanism used in conjunction therewith.

Secured to the deck 10 is a base 14 which may be of channel or other convenient form of construction, with the upright 13 mounted to swing upon an end of the base, the upright bei sli htly inclined, as shown in Fig. 2. A $11 ht y inclined rod or shaft 15 forms part 0 the pivotal connection of the upright 13 with the base, and an end of said rod is journaled in a supplemental base or anchor plate 16, a. suitable brace or tie rod 17 being also connected to the anchor plate 16, and projecting upwardly at an angle toward the upright 13 to be rigidly connected to the upper end thereof, the upper end of the tie rod being formed to provide a suitable hook 18 which projects and depends to one side of the inner face of the upright, and to which is suitably connected the usual block 19 employed in raising or lowering ships, said block having ropes 20 passing thereover, and which also pass over a block 21 suitably connected to the life boat 22, it heing understood by manipulating the ropes 20, the lite boat 22 can be raised or lowered as desired.

l ivoted on the other end of the base 14: 1s a link 23 which in detail is shown in Fig. 4:, and which may consist of a channel section or other convenient form of construction, the upper end or said link 23 having hinged connection with a tubular crosshead 2a, internally threaded to operate over a screw 25 which is pivoted on the base 14 and extends upwardly at an angle and at one end thereof has an operating ,wheel 26. The linlr 23, together with the screw 25, its operating wheel 26 and the crosshead 24, form a part of the operating mechanism, and the latter is completed by the provision of a second link 27 having pivotal connection with the crosshead, and which extends upwardly and forwardly for hinged connection with a plate 28 rigidly secured to the upright 13.

As mentioned heretofore, t inclined toward the space which is occupied by the life boat, and so also the brace or tie rod 17, this form of design being desired so as to provide absolutely swinging clearance for the lif boat between the uprights and the davits, and referring to Fig. 2 it will be seen that normally the upright 13 is inclinedinwardly toward the center of the ship or vessel on which the davits are arranged, the crosshead 2d at this time being in its uppermost position or the screw and abutting against the operating wheel 26. With this arrangement it will be seen that the life boat 22 lies wholly within the vertical plane or the side 12 of the vessel, and the his boat therefore is supported above the deck or the vessel, and does not project over the side where it might be an obstruction to the proper navigation or the vessel.

When it is desired to lower the life boat or swing the life boat into position where it will be conveniently ready to lower to the sea, it is only necessary to manipulate the operatin wheel 26, causing the screw 25 to turn an thus advance the crosshead along the screw toward its lower end, This will cause the two links 23 and 2? to act and the result will be the swinging ofthe upright 13 from its normal position, shown in full lines of Fig. 1, to an outward position, shown in dotted lines of the same figure, so that the life boat will assume a position adjacent to and free from the side of the vessel, this position being clearly shown in Fig. 1.

It will also be clear that in raising the life boat from the sea and the declr or the ship, the reverse of the operation heretofore described, takes place, and the reversal of e upright 13 is the operation of the screw will swing the uprights of the davits back into normal position, thus bringing the boat over the deck of the vessel.

It of course be understood that I do not limit myself to the particular form of device shown and described; that various slight changes may be made without departing from the spirit or the invention; that the device may also be used for other desirable purposes than for use with life boats or life rafts, and the scope or the invention is dedeed in the appended claims.

I claim:

1. in a device or the character described, the combination with a base, of uprights mounted to swing on the base and normally inclined toward an inward position, said uprights being adapted to support aboat therebetween, tie rods for said uprights to swing therewith to hold said uprights inclined toward said boat, a revoluble screw, an operating wheel therefor, an element in threaded engagement with the screw'to be advanced or retreated thereon, and links, having pivotal connection with said element, one of said links connecting with one of the uprights and the other link with the base, whereby when said screw is operated, said upright will be swung from its normal inwardly inclined position to an outwardly inclined position, or vice versa.

2. in a device of the character described, the combination with a base, of uprights mounted to swing on the base and normally inclined toward an inward position, said uprights being adapted to support a boat therebetween, a revoluble screw, an operating wheel therefor, an element in threaded engagement with the screw to be advanced or retreated thereon, and links, having pivotal connection with said element, one of said links connectin with one of the uprights and the other link with the base, whereby when said screw is operated, said upright will be swung from its normal inwardly inclined position to an outwardly inclined posltion, or vice versa.

3. in a device of the character described, the combination with a base, of sup orting uprights mounted to swing on the hase to support an object, such as a boat, said uprights being normally in an inclined inward position and at all times inclined toward the object, to permit of the object swinging freely therebetween, a revoluble screw, means for operating said screw, an element in threaded engagement with the screw to be advanced or retreated thereon, and links, havin pivotal connection with said element, one or said links having pivotal connection with the hase, and the other link having pivotal connection with one or the uprights, wherehy operation of the screw will swing f a boat-supporting swingin mally supporting the boat a ove the deck of said uprights from their normal inwardly inclined position, into an outwardly inclined position and carry said boat therewith.

4. In a ships davits, the combination with upright northe ship, with said upright normally inclined inwardly toward the ship, and inclined toward the boat to permit of the boat always swinging clear of the upright, a. tie rod 10 mounted to swing with the upright and hold the said upright inclined toward the said boat, and means for swinging the upright outwardly into an inclined position to carry the boat adjacent to and clear of the side of 15 the ship, or vice versa.

In testimony whereof I affix my signature.

JAMES FRANKLIN WADDINGION.

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