US813915A - Apparatus for launching ships' boats. - Google Patents

Description

No. 813,915. PATENTED FEB. 27, 1906. R. H. ROBINSON.

APPARATUS FOR LAUNCHING SHIPS' BOATS. APPLIOATION FILED JULY 6. 1905.

4 SHEETs-SEEET 1.

PATENTBD PEB. 27, 1906.

No. 813,9l5.

R. H. ROBINSON. APPARATUS FOR LAUNGHING SHIPS' BOATS.

APPLIGATION FILED JULY 6. 1905.

4 SHEETS-SHEET 2.

No. 813,!315. 4 PATENTED FEB. 27, 1906.

R. H. ROBINSON. APPARATUSTOR LAUNGHING SHIPS BOATS.

APPLIGATION- FILED JULY 6. 1905.

4 SHEETS- SHEET 3.

RICHARD HENRY ROBINSON, OF DAWLISH, ENGLAND.

APPARATUS FOR LUNCHING SHIPS BOATS.

Specificaton of Letters Patent.

Patented Feb. 27, 1906.

Application filed. July 6, 1905. Serial No. 268,580.

To LZZ whom it may cancer-n:

Be it known that I, RICHARD HENRY ROB- INsON, a subject of the King of Great Britain, and a resident of Holcombe Cottage, Dawlish, in thecounty of Devon, England, have invented new and useful Improvements in Apparatus for Facilitating the Launching of Ships' Boats, of which the following is a specification.

This invention relates to improvements in apparatus for quickly launching ships boats, in which the operation of releasing the boat from the chocks upon which it is carried and freeing it from the grips which hold it and of swinging around the davits with the suspended boat, so that the latter can be lowered into the water, can be performed by one or more men by the aid of a wheel and a lever arranged upon the deck.

The objects of my improvements are, first, to provide a hand-wheel by which a Wormwheel attached to one of the davits on which the boat is Suspended can be turned, so that the boat can be swung round into the position for lowering it into the water; second, to enable the bearing of the shaft adjacent to the worm-wheel to be swiveled round so as when required to throw the worm-wheel in or out of the gear with the endless screw which drives it; third, to provide means to prevent any undue or dangerous swinging of the end of the boat carried by the second davit; fourth, to enable the outer chocks which support the boat to be thrown down and at the same time the grips which hold the boat to be released by a single movement of a handlever. I attain these objects by the novel mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side View of a ship s boat suspended from its davits. Fig. 2 is a View of the same from above. Fig. 3 is an end View of the supporting-chocks closed in the position to support the boat. Fig. 4 is a similar View showing the supporting-chocks separated so as to free the boat. F ig. 5 is a view 'from above with the boat removed, showing the chocks separated and the movable one turned down. the davit and the tangent toothed wheel by which it is turned round. Fig. 7 is a view from above, and Fig. 8 an end View of a sli'ghtly-modified form, showing the chocks closed together in a position to receive the Fig. 6 shows the support for Similar letters refer to similar parts,

throughout the several views.

In Figs. 1, 2, 3, 4:, and 5 a a' are the davits turning in sockets fixed to the deck and having Suspended from them in the usual way the boat b. A shaft c, turning in bearings d d', fiXed to the deck, is geared at one end to beveled toothed wheels e, connected with a hand-wheel f, by which it can be turned round in either direction, and at the other end has upon it an endless screw g, gearing with a worm-wheel h, fixed upon the lower end of one of the davits a. In the form of davit where the upper movable portion is stepped or pivoted in an iron socket or standard fixed on the deck, as shown at i, Fig. 6, the worm-wheel his fixed upon the lower end of the davit a, an opening being left at in the lower part of the standard 'i suflicicntly large to allow the endless screw to gear with the worm-wheel. The hearing d' for the shaft c, Fig. 2, is made in the form of a jaw, embracing the shaft at the end of a lever k, pivoted to the deck at Z and held in position by a movable pin or fastening m, so that in case of emergency the pin can be removed and the endless screw g instantly disengaged from the wheel h, so that the davit a can Swing free. At the lower part of the after or second davit a is pivoted a pawl n, Fig. 1, which gears in a circular toothed rack o, fixed to the deck or to the socket of the davit a', so as to prevent any undue or dangerous swnging of the after end of the boat while launching in rough seas.

p p' are the chocks which support the boat, the two outer of which, p' p', are capable of being thrown down fiat, as shown in Figs. 5 and 9,iso as to leave the boat free for launching. The outer chock p' is rigidly fixed upon one end of a bar q, which is parallel with and passes through a hole or bearing in the body of the opposite chock p, which is rigidly fixed to the deck, as shown, and this bar q is free to slide longitudinally, as well as to turn on its aXis and it is pivoted or connected with a hand-lever r, which is hinged upon 'a oint s, carried by a lever t, Figs. 3, 4, and 5, the lower end of which turns freely upon the bar q and is shown formed with a socket u, projecting into a recess in the fixed chock 1), so

that when the hand-lever 7' is moved out the bar q, and with it the outer chock p', is moved away from and clear of the side of the boat, Fig. 4, while the following action of turning down the chock 1)' upon the deck (to allow the boat s keel to pass over when launching) is effected by turning the bar q upon its axis, together with the lever t, to which the handle is jointed at s, by moving the hand-lever 7' in a direction at right angles to its previous motion.

v is a bracket attached to the fixed chock 1), which holds the lever t steadily in its place when it is turned up, as in Figs. 3 and 4.

w w are rollers revolving upon the bar q between each pair of fixed chocks p and movable ones p'. The keel of the boat rests upon these rollers, and When the chocks p and p are closed together, as in Figs. 2, 3, 7, and 8, they grip the rollers tightly; but when the chocks are separated, as in Figs. 4, 5, and 9, the rollers w are released and free to revolve and offer no obstacle to any movement of the oat.

:Ic x are grips by which the boat is held down upon the chocks p p', their upper ends being hooked over the gunwale of the boat and their lower ends provided with rngs y, which are dropped (when the boat has been lowered upon the chocks) between the jaws of brackets z, fixed upon the 'declg into which they pass freely, strong bent pins A, fixed upon the bar q and having their free ends parallel with the bar passing through them and through eyes in the brackets 2 when the bar q has been turned to bring the movable chock 1)' into its vertical position, Fig. 4, and has then been drawn back by the handle to close the chocks, Fig. 3. A pin B, carried by a chain C, fastened to the handle r, is then dropped through a transverse hole D in the bar q and a corresponding hole E in the bracket 2, so as to secure the handle r and the entire apparatus in their position. When the chocks p' are thrown down by pushing the bar q, formed by the handle 7", the pins A i are withdrawn from the brackets z and the rings y upon the rips u are set free and the boat can be launched.

In the modification shown in Figs. 7, 8, and 9 the bar g, which passes through the fixed chock p and has firmly fixed to it the movable chock pfl is j ointed direct to the handle r by the link F, the center s, upon which the handle turns, being formed upon a horizontal stud G, which turns in a bracket H, fixed to the deck, and the connecting link F being jointed to the handle at I and to the bar q at J. A pin Kis shown fixed into the end of the movable chock p' and passing through a hole in the roller w into a hole in the fixed chock p, so that when the chocks are brought together, as shown in Fig. 8, the two chocks, the roller; and the sha'ft are all held together in their proper relative positions. In this form of the apparatus the remaining details may be the same as those first described and shown in Figs. 1, 2, 3, 4, and 5.

I am aware that rior to my invention apparatus for facilitatng the launching of ships' boats has been made with swiveling davits, Operating by a wheel and handle, in conjunction with movable chocks and automaticallydisengaging grips for holding the boats upon the chocks, and I do not, therefore, claim such a combination broadly; but

What I claim as my invention, and desire to secure by Letters Patent, is-

1 In boat-launching apparatus, the combination with the pivoting davits and means for Operating same, of fixed chocks, movable chocks, and means for Operating said movable chocks longitudinally and laterally relatively to said fixed chocks, substantially as described.

2. In boat-launching apparatus, the combination with the pivoting davits, of a fixed chock, a rotatably-mounted reciprocating shaft adjacent thereto, a second chock fixed to said shaft, and means for reciprocating and rotating said shaft, substantially as descrbed.

3. In boat-launching apparatus, the combination with swiveling davits a, a' of a fixed chock p, a sliding and turning shaft q, a chock p' attached to said shaft-handle 7 j ointed to shaft q, lever t turning on shaft q, ivot s on which lever t turns, all substantia ly as set forth.

4. In boat-launching apparatus, in combination with the sliding and turning shaft fixed chock p, and movable chock p@ the brackets z, bent pins A fixed upon the shaft q, and entering holes in the brackets z, and rings y upon grips x, substantially as set forth.

5. In boat-launching apparatus, the combination with the fixed and movable chocks, of a loosely-journaled roller inter osed between the adjacent edge faces of sad chooks, and means for Operating said movable chock with relation to said roller and fixed chock, substantially as described.

6. In boat-launching apparatus, a combination with a` sliding and turning shaft g, a 'fixed chock p and movable chock p', of a handle r jointed to a studGswiveling ina bracket H, and a bent link F jointed to the shaft g and the handle r, substantially as set forth.

7 In combination with the sliding and turning shaft q, fixed chockp and movable chook p, the loose roller w upon the shaft g, between the chocks, and the pin Kfixed to the movable chock p@ and passing through holes in the roller w and the fixed chock p, when the chock p' is Vertical, substantially as set forth.

8. In boat-launohing apparatus, the com- IOO IIO

&13,915 8 bnaton With the pvotng davts and tackle connection therebetween, a curved ratchet member adjacent one of said davits, a pawl member pvotally carred by said davit and coperating With said ratchet member, and means for Operating said other davit, substantally as described.

In Witness Whereof I have hereunto set my hand in the presence of tWo witnesses.

RICHARD HENRY ROBNSON. Wtnesses:

JOHN KITTS, RICHARD JARVIS BENNETT.

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