US1468646A - Apparatus for cleaning ships' bottoms - Google Patents

Description

J. OVERALL Sept. 25, 1923.

APPARATUS FOR CLEANING SHIPS BOTTOMS Ei 28. 1922 5 Sheets-Sheet 1 John OVERALL w 5 8 6 W T M L L A R E V O .J.

Sept. 25, 1923.

APPARATUS FOR CLEANING SHIPS BOTTOMS John OVERALL INVENTOR;

' Mtovney Sept; .25 1923.

. 11,468,646 J. OVERALL APPARATUS FOR CLEANING SHIPS BOTTOMS Filed Nov. 2 1922 Jhn OVERALL shown roosting -ro ie.

Patented Sept. 25, T9230 JC-HN ovEnaL'L, or Daeaaem m, tines srnnnr, NEW SOUTH warns, AUSTRALIA.

" imitates ron onnanrne sn rs terror/is.

Application filed'Noveinber 2a, 1922. Serial No. 603,731.

To all whoiiznit may concern:

Be it known that I, JonN OVERALL, a subject of Great Britain, residing at .'St. GCOIQ'GS Crescent, Drunnnoyne, near Sydney, in the' State of New South lVales, Commonwealth of Australia haye invented new and useful Improvements in Apparatus for (leaning Ships Bottoms, of whi-chthe following 1s a specification;

'This invention relates to apparatus for cleaning ships -bottonis whereby the operation is carried out whilst the ship is waterborne, thereby obviating the necessity of dry docking her for the purpose. Referring to'the accompanying sheets of planatory drawingse L eievati on of a "ship applied; Fig. 2 Fig; 3 Fig. i

to which the invention is is a similar plan view and I a transverse section of the vessel. is aperspective View of the reclp gear for operatlng V the working ig. 5 a plan View of thebow and stern b'oon'i upon which is mounted the traversing gearof the working-rope fair-leads.

Fig. 61saperspect1ve View showlng the scraper device together with means for varying the Vertical position of the working rope.

-Y"Fig."7 is a longitudinal sectionotthe scraper device.

Fig.8 is a top plan'thereof. v i I l8'representsthe ships hull and 14: is the working rope to which the scrapers 15 are attached by Ineans'of the clamps 16am].

bridles 17.3 The working rope 14- is rove through the pulleys 18 -'slidingly attached by thesle eves19 to the booms 20, the latter being secured on the bow and stern of the ship 13 by suitable clamps or such like devices 21and at the ends secured by stays 22 attached to the hull of the ship. The .free

7 ends23 of the working rope 14 are secured to and wound round barrels24ro tatably operated by power appliances andgprovided with ratchetdocking mechanism 25. These guides 27 on the rocker arm 28. This latter is journalled at 29 on a foundation 30 on a punt 31 secured to the ship, r it may be mounted upon the ship itself. 31 is the engine for-operating the reciprocating; gear,

32 is a connecting rod-journalled at the lower end of the rocker arm 28 and adapted by its ig. 1 is-a diagrannnatical View ofthe side.

roc ier arm are journalied a pair 01" pu leys wound on to eitherot the aforesaid barrels as required." T he engagement oi the grooi'ed discs 36 witlrthedriving disc isobtainod by causing the bed plate 26 to slide in horizontal. plane as required, within the gui 27. This movement is obtainedby operating the lever 31, journalled at 38 on the rocking arm 28 and niechanlc'ally attached to the bed plate 26 by the pin 39. the to-andas movement of the lever 37, eithergroomd disc 36 iscaused toengagcseparately with the driving grooved-disc 35; The operating handles 40 are employed, if needbe, to draw in slack should it occur in the rope 14:.

- The scrapers are each p reterabl formed of four members secured together by shackles all which permit of ample freedom of play of such members, enablingthem', at all times,

to lie "close to the surface ofthe'hull 13, when in operation. The scraper blades d2 arc se cured toa llF211l'1G i-.3 shaped preferably to form a truncated cone ateach end of the device. The forward end eel oi each scraper blade/l2 is sloped downwards to enable it to ride over obstructions such as the lap of a plategwhenjin operation. are runners, the rubbingaccept which are raised slightly above the leyel ot thescraper blades 42 to prevent the latter from coming: into contact with "the paint on;thc 'ships hull and so in- These runners tapered downur it. w rds as fat 46 where they approach the scraper blades 42. For clearness of. illustration-'the =centrally placed runners are :not shown in'lfig; 6. 4:7 "are brushes adapted to lemme: the material loosened by t-l ie 'scra ier blades 42. The scraper 15 is attached to the working rope i l by means of the shackles 16 and bridles 1.7. These shackles are so constructed that they may be coupled and uncoupled readily to permit of the positioning of the scrap mgr apparatus on the working rope 14. h facility. The frames 43 are constructed of some buoyant material to ensure that the scraper blades 42 are kept up to the surface of the hull when at work by such buoyant property, and 48 are floats employed to impart greater buoyancy when such is re quired. i

i The sleeves 19 are adapted to be slidingly moved along the booms 20 by means of the controlling lines 49 rove through the pulleys 50 thus enabling the load of the Working rope 14 to be altered in horizontal plane at will. The guideblocks 51 are interposedat suitable distances apart and through these the Working rope'14 .isrove. These guide blocks 51 are adapted to be secured by vertically disposed guy ropes 52to the vessel 13 and by them they areraised and lowered to hold the Working rope 14 in the required horizontal position when in operation.

In carrying out the invention the Working rope 14 is operated by some source'of power positioned either on a floating structure secured tothe side of the vessel to be cleaned, or it may be mounted upon the deck of the vessel itself. In the drawings it is shown positioned upon a punt secured along side the vessel. The rope 14 is rove through the several fair-lead pulleys as illustrated and described and is reciprocated to make arranged for the operation of the scrapers 15. The corresponding barrel automatically unWinds a similar length of its coiled rope.

Upon this operation being completed the ratchet mechanism25 secures the barrels, 24 in position. Reciprocating motio'n'is again imparted to the Working rope 14 until a 1 fresh portion of the ships surface has been cleaned. The operation above described is repeated until the Whole of the surface "in the run of the rope is cleaned. The latter is then moved in vertical plane to take up a. fresh working-position. This is donegby hauling on, or slackening up, the lines'52 controlling the guide blocks 51. By this means the working rope 14 is movedeither up or-dovvn inrelation to the. hull as required, and so a fresh working run isfprovided'for it. In making these adjustments the fair-lead pulleys 18 on the sliding collars l quired.

19on the booms 20. are adjusted to ensure that the working rope'operates' in correct line, accurateadjustment being readily obtained by means of the lines 49.]

In operation I may attachone or more scrapers to the Working'rope,depending on the Working conditions or on the condition of the foulness of the hull. r a By these means the scraper orbrush 61 is guided to traverse the required surface at will. a r

I clai1n:m i r i V 1. Apparatusfor cleansingships bottoms comprising a Working. rope, scraping de.-.

vices attached to such' rope, means'for imparting reciprocating motion to the said rope, means for adjusting its Working'position-both in horizontal and vertical. plane in relation to the hull of the vessel, and means for advancing orretiring the position ofthe scrapers relative to the cleaned portion of the hull of the vessel as theiwork proceeds.

.2. Apparatus for the purpose specified comprising a Working rope to which a scrap- .ing device is attached, means for imparting reciprocating motionto such rope, means for Winding-1n e ther end of the rope to advance or retire 1t andthe scraplng device attached thereto as the Work proceeds, and means for altering the position ofthe rope'both' in horizontal and vertical plane tocause the scraping device totraverse the surface of the hull during'the operation; Y i V 3. In apparatus as. described means for imparting a reciprocating motion to the orking rope consisting. of Winding barrels and a JOUIIIZtllGCl member oscillated'by suitable poWer, a pair of fair-lead pulleys situ- 1 ated at one endoftheymember over which the Working rope is lead to" the barrels, a

bed plate at the other end of the member upon which the Working rope barrels and frictiongear are journalled, such bedplate being adapted to be slidingly moved at will in horizontal plane .yvithinuts guides to. cause either of" the friction pulleys ito en-' gage individually-With driving friction pulley to Wind in the workmgrope as re in; presence of tWo Witnesses.

Witnesses: V A. G.'GOODI N,

N. OVERALL.

In testimony hereof I afiix my signature JOHN OVERALL. Y i

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