US1619000A - Tackle - Google Patents

Description

March I 1, 1927.

P. w. SIEURIN TACKLE Filed Nov. 9, i925 Paw/ V Patented Mar. 1, 1927.

UNETED STATES PAUL W. SIEURIN, OF GGTTENBORG, SWEDEN.

TACKLE.

Application filed. November 9, 1925, Serial No. 67,788, and in Sweden December 5, 1924.

My invention relates to tackles especially as used on ship board on davits or the like in order to simplify the operation and use of the tackles especially when hoisting the 6 blocks after having lowered the life boats.

Frequently life boats on board ships are placed in sets of two or more on top of each parts are in a state of rest, the tackles 2 other, in which case the same couple of davits is provided to handle several life boats. After having launched the first life boat the tackles have to be hoisted up to be used for launching the next life boat. It

most frequently happens that the tackles thereby swing around and the rope parts he come twisted, so that all hoisting is obstructed. It also happens that the lower pulley block or blocks turn over between the rope parts twisting them together.

In order to obviate said troubles the presentinvention has been made. It consists therein that one of the rope runs of each tackle runs through a deflector block, the block rope being so arranged that it can be hauled sideways so that said rope run is deflected away from the others.

An important application of the invention can be made by carrying each deflector block controlling rope over a sheave, properly provided at the inward gunwale or the life boat, and further along the side of the boat forward and past the stern at that end of the boat which is lifted by the tackle and then to the davit or to a place in its proximity. In such case there should of course exist some means for hauling in the deflector block rope or shorten it, sothat not only one of the rope runs can be carried outward and thus lift the boat somewhat from its supports, but also during a further hauling in of the deflector block rope the life boat can be operated to swing outwardly.

My improved arrangement is illustrated on the accompanying drawing, in which Fig. 1 is a side elevational view of a life boat and supporting davits showing my improved tackle arrangement and control;

Fig. 2 is a plan view of the same, and

Fig. 3 shows a modified arrangement.

In davits 1 a life boat 8 is suspended by means of tackles 2 and is also standing on supports 11. One of the runs 12 of each of the tackles 2 runs through a deflector block 3, the controlling rope 4 of which in the shown embodiment runs over a block 5 fastened to the boat 8 by means of any suitable de ice which devi is d t hable nd preferably so arranged that it is fastened only by means of taps or the like to the gunwale. The ropes 4: are further carried to tackles 7 and 7 respectively, and then. by means of rop'es 9 to the respective davit 1, where such ropes are fixed.

Before the life boat is swung out all the being hauled tight and their runners made fast to some kevel or cleat device preferably provided in the life boat. hen the life boat is to be launched the runners of the tackles 7 are hauled whereby the corresponding rope 4 is tightened and the part 12 at the right hand tackle is carried outward by the deflector block 3 and stretched, thereby lifting this end of the boat somewhat. The runner 12 can not, however, be carried outward any great distance before the resistance will become so great that the strain in the rope i, the tackle 7 and the rope 9 forces the boat over board' with the stern past its davit.

Then the runner of the tackle 7 is hauled in and the, same operation is repeated with the other end of the boat. The'boat can then be lowered somewhat by means of the tackles 2 and be manned. During the further lowering the device 6 is released from the gun- Wale and thereby also from the tackles 7 and 7.

If it appears, after launching the boat and releasing it from the tackles, that the tackles tend to twist, this can be obviated by carrying the rope runners 12 still further outward by further hauling in'the tackles 7, 7. In order to prevent the lower tackle blocks from turning around between the rope runners these blocks are preferably so designed that their point of gravity comes comparatively low. During the hoisting of the blocks the runners of the tackles are thus prevented from being twisted partly on account of the fact that the deflector blocks keep one of the runners of the respective tackle away from the. others, and partly on account of the kevel devices preventing the lower blocks from turning over.

The deflector blocks can be used independently of the swinging out tackles 7 and 7 This is shown in Fig. 3 where the tackle 13 connects the ropes 4 extending from the deflector blocks 3 which engage each a runner of the respective hoisting tackle 2. By means of the tackle 13 the deflector blocks are caused to deflect the runners .12 to prevent twisting of the tackles 2 and at the same time to operate these tackles to raise the boat, Such raising is in conjunction with swinging movement of the boat controlled by the tackles 7 and 7.

From this invention the advantage willbe derived that the ships deck will be free from all encumbrance directly after the swinging out of the boats. Thus the boat supports 11 can be made detachable and fixed only by means of pins in the deck. Devices for launching the boats can be tied to folding ring-bolts. In this way the deck can be freed in an instant from all protruding objects so that noth ng obstructs the passage and an easy embarkation. During the embarkation the valuable advantage is obtained that the life boat is held very steady by the tackles 7, 7. Furthermore, an additional staying of the boat is obtained by placing a rope or the like in a well known manner from one of the g unwales of the boat down below the middle of the boat on its outside and thence in to a fastening on the deck.

Having described my invention, I claim as follows 1. In combination, two adjacent suspended tackles, a deflector block engaging one of the rope runners of each tackle, and means for hauling said deflector blocks toward each o her whereby to deflect the rope runners.

2. In combination, davits, a life-boat, tackles suspending said boat from said davits, the ends of the ropes of said tackles being secured, a deflector block engaging one the rope runners of each suspended tackle,

means for hauling said deflector blocks toward each other to cause deflection of the engaged runners and operation of the suspended tackles to lift the boat.

3. In combination, davits on board ship, a life-boat, tackles for suspending said boat from said davits, the ends of said tackle ropes being secured, a deflector block r ceiving one of the rope runners of each suspending tackle, means for hauling said deflector blocks toward each other to cause deflection of said engaged rope runners and operation of the suspended tackles to raise the boat, and means for swinging said boat when thus raised by said suspending tackles.

4:. In combination, a pair of davits on ship board, a life boat, suspension tackles for suspending said boat from said davits, a set of pulley-blocks on the inside of said boat positioned at substantially the middle thereof, a tackle extending from each davit around the adjacent end of the boat and along the inner side thereof, a deflector rope extending from each of said tackles through one of said pulley-blocks, a deflector block at the free end of each deflector rope receiving one of the rope runners of the respective suspension tackles, operation of either one 1 sai d swing controlling tackles causing operation of the respective deflector blocks to deflect the rope runner engaged thereby and to cause the respective suspension tackle to raise the respective end of the boat. 7

5. In combination, a set of davits onship board, a life-boat, suspension tackles suspending said boat from said davits, a deflec tor block engaging one of the runners of each of said tackles, swinging tacklemechanism associated with each davit and the adjacent end of said boat for swinging such end, and means whereby operation of either of said controlling tackles will pull the respective deflector block to cause deflection of the engaged rope runner and operation of the suspension tackle to raise such end of the boat.

6. In combination, a set of davits, a lifeboat, suspension tackles for suspending said boat, a deflector rope engaging one of the runner ropes of each of said suspension tackles, and a tackle connecting the outer ends of said deflector ropes for drawing sait ropes to cause deflection of the engaged run ner ropes wnereby twisting of the suspension tackles will be prevented.

In witness whereof, I hereunto subscribe my name this Hth day of October, 1925.

PAUL W. SIEUEIN,

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