US1371492A - Rudder-operating gear - Google Patents

Description

Patented Mm. 15,1921.

J. A. KITCHEN.

RUDDER OPERATING GEAR.

APPLICATION FILED Aue.9,192o.

b .Emu c J. G. A. KITCHEN.

HUDDER OPERATING GEAR.

APPLICATION FILED AUG.9 19,20.

2 SHEETS-SHEET 2.

Patented Mar. 15, 1921.

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di'zolnfy NDHMS PETERS. INC.. DYMO.. WASHINGTON. D. C

ed certain narran stares PATENT OFFICE.

essreNoR or' ONE-HALE ro eoRnoN LAND, AND JAMES nYLER oiaANLeN,

LAND.

Specification of Letters Patent.

HENRY FRASER. or LIVERPOOL, ENG- or wEsrWoLD, BLUNDELLSANDS, Elve-A RUnDER-OPERATNG GEAR.

Patented Mar. 15, 1921.

Application filed August 9, 1920. Serial No. 402,205.

Be it known that I, JOHN GEORGE AULsE- encon KITCHEN, a subject of the King of Great Britain and ireland, andresident of E' Fiese Bank, Scotforth, Lancaster, in the vounty of Lancaster, England, have invent new and useful improvements i?.elating to Ruckler-Operating Gears, 'of which 'the following is a speciication. v

This invent-ion relates to the operating gear for rudders of the type which are ar-V ranged in pairs at the Yopposite sides ofthe Y screw propeller or propellers and adapted for. both boat steering and reversing purposes as set forth in prior U.. S. Patent No. 1186210. n y

`The object of the present invention is to provide an improved compactarrangement of the'gear which shall insure that the rudders are maintained in their closed or boat reversing position while the Vboat is being steered when going astern.

Referring kto the two accompanying sheets of explanatory drawings Figure l is a sectional side elevation, Fig. 2 a plan, and Fig. 3 a sectional end elevation representing one lform of rudder operating gear constructed in accordance with this invention. Y V

Fig. 4 is a sectional yside elevation, Fig. 5 a plan and Fig. 6 an end view of another form of the said gear.

Fig. 7 is a diagrammatic plan view showing the rudders in the closed or boat reversing position.

The same reference letters in the different views indicate the same or similar parts.

ln accordance with my present invention the tilier or tiller arm or bar a fulcrums about the axis of the concentric rudder stocks; preferably it is fulcrumed freely upon the end of the inner stock 7) of the two concentric rudder stocks and c. The said arm or bar a has sliding collar (Z thereon which is connected by links e to arms or levers f upon the rudder stocks. The said collar can move freely along the rtiller a. The arms orlevers ,t aforesaid are also connected by means of rods g, to a cross-head or like part L fulcrumed about a pin z', which in the example illustrated at Figs. 1, 2 and 3. can be moved away from or toward the axis of the rudder stocks by a screw j andsliding nut device lo, the screw, on its rotation by a sprocket or chain wheel as Z, effecting the said movements of such nut or slideic with whichy thel fulcrum or pin i is formed. The said cross head /t is so shaped that whenthe arms or levers f' upon the rudder stocks are in the rudder closed or boat reversing position, the said varms or levers are parallel with the parts of the cross head /L on the respective sides of the cross head fulcrum. Such closed position of the rudders'm is shown in the diagrammatic view at Fig. 7 the said view shows'also the arms the cross head /i and the aforesaid connecting rods g. It follows therefore that when the rudders are closed, any movement given to the arms or levers fand so to the cross head, by the turningv ofthe rudder stocks forboat 'steering purposes, will not cause any relative movement of the rudders in opposite angular directions such as would occur if the said cross head and arms or levers vwere not parallel, as before described, when the rudders were closed together for reversing.

In some cases, of which an example is given at Figs. t, 5 and 6, we may operate lhe cross head fulcrum t' by means of a reciprocating part 7c actuated by a crank kpin n, the position of the said pin when the rudders are closed for boat reversing purposes being approximately in, or at only a slight angle to, line passing through the n anis of the crank 0 and the axis of the ful` crum pin z'. By this means we are enabled to effect the final closing movement of the rudders with very considerable leverage or mechanical advantage due to the toggle action of the connecting rod or link v72 between the crank pin n and the fulcrum pin -i of the cross head It. As shown at Figs. 4 and 5,the arms or levers f of the rudder stocks are in the positions corresponding to the fully open or approximately fullyl open position of the rudders. It will be understood that if the crank pin n has moved through .a semi-circle from the position shown at Fig. 4, it will have brought the said arms f to the rudder closed or boat reversing position Shown at Fig. 7, and that the connecting rod p will then be at the same Obliquity or angularity as that shown at Fig. 4, so that f of the rudder stocks,

Vtiller about the vse:

desired toggle action for the purpose aforesaid..-

visV rotated :through the wheel as Z The crankA 0. medium of a' chain or sprocket or otherwise.

Thetiller bar a may .be actuated directly by hand or through suitable transmission means. Y

Having now described my invention what Iclaimas new and desire to secure by LettersPatent is :f- Y Y 1. In operating gear for rudders adapted both for boat steering and reversing purposes, vthe combinationV comprising two rudL derswith rudders stocks,`arms upon the rudder'stocksm, pivotally mounted cross head and rods connecting same with said arms, a tiller, and means whereby the rudders are maintained in their closed or boat reversing position while the vessel is being steered when going astern, as set forth.

' 2. In rudder operating gear having means whereby the rudders are maintained in their closed or boat reversing position, while the vessel vis being steered when going estern, theicombination with the tiller andthe rudder stock-arms or levers, of a collar carriedv by and free to slide'onsaid tillerf and linksconnecting therudder stock arms and saidrcollar, asset forth.v c .3. In rudder operating gear, having means whereby the rudders are maintained in their closed or boat reversing position, while'the vesselris being steered when going astern, the combination with a tiller, a pivotally lmounted vcross head; and rudder stock arms or levers, of a collar carried by 'means whereby the rudders are Ymaintained ,in their closed or boat reversing position,V while the vesselis'being steered when going astern, the combination with a tiller, a pivotally mounted cross head, .and rudder stockarms or levers, of a collar carried by and free to slide on said tiller, means connecting the rudder stock arms or levers with the saidcross head andv with VtheV said coilar, means for reciprocating.V the cross head and 'for imposing a toggle action thereon 'as seti'orth.` Y v V5. Inoperating gear "for rudders adapted `both for Y purposes the combination with a tiller, a pivotally 'mounted cross head land rudder stock arms orlevers, of a collar carried by and free to slide onv saidtillerj means connecting the rudder stock 'arms with vthe said collar, and means whereby the *said cross head is kept in parallel with the said rudder stock arms while the latter' are moved by the tiller for 'steering when the vessel is going asterinas set. `forth.

In testimony whereof I have signed i y name to this specification.

JOHN GEORGE AULSBROOK KITCHEN.'

boat steering and reversing.

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