US1567116A - Ship-hoisting apparatus - Google Patents

Description

J. G. CURREY SHIP HOjIlSTING APPARATUS Filed Nov. 18, 1924 3 Sheets-Sheet 1 Jamar G, Currey,

J. G. CURREY SHIP HOISTING APPARATUS Dec. 29 1925.

Filed Nov. 18, 1924 3 Sheets-Sheet g Dec. 29 1925;

' J. G. CURREY SHIP HOISTING APPARATUS Filed Novfl8, 1924 SSheets-Sheet 5 L gi /11mm flames zzr'l'ey 331;. Cutaway.

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Patented Dec. 29, 1925.

JAMES G. CUB/REY, OF LEAVENW'ORTI-I, KANSAS.

SHIP-HC'IST NG APPARA'IUS.

Application filed November 18, 1924. Serial No. 750,607.

ToaZZ whom it may concern,-

Be it known that I, JAMES G. Conner, a citizen of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented certain new and useful Improvements in Ship- Hoisting Apparatus, of which the following is a specification.

My invention relates to hoisting apparatus which may be employed to advantage in raising ships sunk in water too deep for divers to operate eiiiciently for the purpose of repairing breaches with temporary patches preparatory to floating such ships.

In carrying out the invention a number of tongs'are lowered to grip portions of the submerged ship and initially raise the same a short distance above the bottom of the sea. so that a number of cables may be placed under said ship to form a sling for the purpose of raising the ship to the surface.

Reference will now be had to the accompanying drawings. in which:

Fig. 1 is a vertical cross section of two salvaging vessels eduipped with the hoisting apparatus in position for hoisting a sunken ship.

Fig. 2 is a side elevation of one of the salvaging vessels with the hoists removed.

Fig. 3 is a detail of one of a number of hoistswith which the salvaging vessels are equipped.

Fig. 4 is a detail of one of a number of drums employed in taking up slack and supporting the hoisting cables.

Fig. 5 shows a longitudinal section and a plan view of one of a number of clamps for engaging the hoisting cables.

Fig. 6 is an enlarged front elevation of a pair of tongs employed in carrying out the invention.

Fig. 7 is a side view of said tongs.

Referring now in detail to the various parts. 1 and 1, designate two salvaging veswhich may be in the torin oit' barges, pontoons, or other suitable type. and will hereinafter be referred to as barges, or salvaging vessels. The barges l and 1 are equipped at their lower portions with antifriction rollers 2 for a purpose which will hereinafter appear. 3 and 8 designate standards ar 'anged along the adiacent sides of the barges l and 1 and provided at their upper ends with cross arms 4 and 4, in which guide sheaves 5 and 5, respectively, are ou ed.

(i designates a pair ot tongs consisting of a pair of jaws 7 and 8, having arms 11 and 12, respectively. connected by a pivot 13. The adjacent sides of the jaws 7 and 8 have ratchet- like serrations 9 and 10, respectively, to enable them to obtain a lirm grip on a subn'lerged ship.

The upper ends of the arms 11 and 12 are bifurcated to receive sheaves 14 mounted on spindles 17. A bridle 16 extends around the sheaves let and has its ends crossed. one end being secured to the arm 11 and the other to the arm 12 by suitable means such as U- bolts 19.

1S and 18 designate hoisting cables attached at their lower ends to two of the bridles 16. The upper ends of the cables 18 and 18 may be attached to traveling cranes 21 and 23 mounted on tracks 21" and 23. extending longitudinally of the barges 1 and 1, or said cables may be attached to a number of the drums 20 and 20, on the barges l and 1, respectively.

22 and 22 designate hoists suspended from the cross arms 4 and 4., and provided with clamps 2t and 24;, respectively, for gripping the hoisting cables 18, 18 and 26. The hoisting cables 26 run over a number ol the sheaves 5 and 5 and are attached to a numbcr oi' the drums 20 and 20. The hoists 22 and 22 provide direct lifting means for the cables and their load and eliminate the triotion and extra power required to overcome the same it the cables were hoisted by the drums after being bent over the guide sheaves.

27 designates other hoisting cables which run over a number of guide sheaves 30 and 30 and are attached to a number of drums 29 and 2t on the barges 1 and 1, respectively. The sheaves 30 and 30 are mounted on cross arms 32 and 32 carried hv standards 34 and ill. arranged. along the port side of the barge l. and the starboard side of the barge 1., respectively. Hoists 36 and 36", similar to the hoists 22, 22, are suspended from the cross arms 32 and 32 and provided with clamps 38 and 38". respectively, similar to the clamps 24, 24-.

The respective drums 20. 20*. and 29, 29, are actuated by levers 40 having pawls 42. which engage ratchet wheels l4 fixed to said drums and engaged by pawls -16. which hold the drums from backward rotation.

In practice, after the submerged ship A has been located, two pairs of the tongs 6 are lowered preferably by the traveling cranes 21 and 23, to probe for a grip on the rails or other projecting portions of said ship. Preparatory to lowering the tongs 6, their jaws are opened and held apart by suitable means such as 2 X 4 inch timbers C, which are about three feet in length. As the tongs are lowered said timbers C strike the rails or other projecting parts of the ship A and are dislodged from between the jaws 7 and 8, which immediately close upon said projections. Clamps 2e, 2e are then lowered close to the waterline and applied to the cables '18, 18 to hold the same taut while their upper ends are removed from the cranes 21, 23, run over the sheaves and 5 and attached 'to'the drums 20 and 20 respectively. The foregoing operation is repeated until a suflicient number oftongs have seized the ship to raise the. same. The ship. is then raised step by step by the clamps 2 1-, 24 and the hoists 22, 22 After'the ship has been raised a short distance from the bottom of the sea a number of the cables 26 and 27 reliable hoisting means than that afforded by the tongs 6. A number of the clamps 24', 24: and 38, 38 are then applied to the cables 26 and 27, respectively, close to the water line and the respective hoists 22, 22 and 86, 36 are operated in unison to raise the cables 18, 26 and 27 step by step, the

, slack being taken up by the associate drums and 20, 20 and 29, 29, respectively. The vessel is raised to the surface between the barges 1- and 1 step by step and may then be patched pumped out so that it can be readily towed to dry dock for permanent repairs.

By hoisting the cables in unison the vessel A and the barges 1 and '1 are kept on an even keel, and as the cables 27. are raised step by step they are kept from becoming damaged, or damaging the lower corner on the port side of the barge 1, or the lower starboard corner of the barge P, by the associate antifriction rollers 2. Placement of the cables 26 and 27 in sling l orm beneath the ship A may be effected in any suitable way, but preferably by the apparatus disclosed in my copending application filed November 18, 1924, Serial No. aw

From the foregoing description it is apparent that I have provided hoisting appa ra t us emliodying the advantages above pointed out, and-while I have shown and described the preferred construction, combination and arrangement of parts I reserve the right to make such changes as properly fall within the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. In combination, a salvaging vessel, guide sheaves supported above said vessel, a drum mounted on said vessel, a hoisting cable connected atone end to said drum and running over and depending from said guide sheaves, and an antifriction roller at the. adjacent lower corner of the salvaging vessel for engagement. by said cable.

2. In combination, a salvaging vessel, a cross arm supported above said salvaging vessel, a hoist suspended from said cross arm, and clampmeans carried by said hoist for engaging a hoisting cable.

3. Incombination, a salvaging vessel, a row of drums arranged along each side of saidsalvaging vessel, hoisting. cables attached to a number of said drums, guide sheaves associated with said drums to guide the free ends of said cables overboard, and hoists arranged along each side of the salvaging vessel for raising the hoisting cables.

4. In combination, a salvaging vessel, a row of drums arranged along each side of said salvaging vessel, hoisting cables attached to a number of said drums, guide sheaves associated with said drums to guide the free ends of said cables overboard, cross arms-0n which said guide sheaves are mounted, standards arranged along each side of the salvaging vessel and carrying said cross arms, and hoist depending from said cross arms and adapted to raise the hoisting cables. I

5. In combination, a salvaging vessel, a row of drums arranged along each side of said salvaging vessel, hoisting cables attached to a number of said drums, guide sheaves associated with saiddrums to. guide the free ends ofsaid cables overboard, hoists arranged along each side of the salvaging vessel for raising the hoisting cables, and clamp means carried by said hoists for gripping the hoisting cables.

In testimony whereof I affix my signature.

JAMES e. onunnr.

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