US1475695A - Means for controlling and reversing ships provided with propellers - Google Patents

Description

Nov. 27, 1923. 1,475,695

S. GOLDEN MEANS FOR CONTROLLING AND REVERSING SHIPS PROVIDED WITH PROPELLERS Filed March 28 1923 what contracted in area.

Patented Nov. 27, 1923.

UNITED STATES 1,475,695 PATENT OFFICE.

SIDNEY GOLDEN, OF ALTRINOHAM, ENGLAND, ASSIGNOR TO GEORGE FLINDERS JARVIS, OF LONDON, ENGLAND.

MEANS FOR CONTROLLING AND REVERSING SHIPS PROVIDED \(VITH EROPELLERS.

Application filed March 23, 1923. Serial No. 628,279.

To all whom it may concern:

Be it known that I, SIDNEY GOLDEN, a subject of the King of Great Britain and Ireland, residing at Altrincham, in the county of Chester, England, have invented certain new and useful Improvements in Means for Controlling and Reversing Ships Provided with Propellers, of which the fol lowing is a specification.

This invention relates to improvements in means for controlling and reversing ships provided with propellers whereby all manoeuvering both ahead and astern, can be carried out with the propeller turning in the ahead direction without modifying its revolutions.

' According to this invention, a tubular body is mounted to swing about a :substantially vertical axis intersecting the axis of rotation of the propeller, and to enclose the wake thereof, the said body acting normally as the rudder and being provided with means to form an adjustable abutment therein at will for partially or wholly arresting the wake, whereby the direction of the wake can be reversed or partially reversed, and be directed forward for movement directly astern, or directed to port or starboard for steering while going astern. Moreover, by balancing the wake so that half goes astern and half ahead, the ship will remain stationary assuming there to be no current, and can be turned on its "centre by giving it helm.

The means for forming the abutment, comprises a plate pivoted diametrically inside the tubular body behind the propeller in the manner of the movable valve element of the butterfly type of valve.

The tubular body forms the rudder or manoeuvering tube and preferably surrounds the propeller at its forward end, and the sides at this end are preferably splayed or flared outward in a horizontal plane, so that the astern end may be some- The valve lies normally in a feathering position in the wake of the propeller, from which position it is allowed an angular movement of about ninety degrees and it can be fixed at different angles within this range so that the passage through the tubular body can be varied in area from full bore to total closure. The valve is operated and fixed in the desired positions, from inside the ship 'in two different positions.

movement.

by means of any suitable mechanism either manually or by power and in such a way that there is no interference with the freedom of giving the ship helm. i

The accompanying sheet of drawings,

shows how my invention may be carried tional elevation upon an enlarged scale.

Figures 5 and 6 represent the rudder and valve in sectional elevation with the valve Figures 7 and 8 are diagrammatic views in plan, of modifications in the disposition and manner of operating the valve.

Referring to Figures 1 to 60f the drawings-the tubular body or rudder casing 1 is shown cylindrical at the astern end 2 but forward is splayed or flared at the sides as seen at 3, Figures 2 and 3, by which the casing may be. smaller in average circlearance at the sides to allow the wake when reversed, to pass out more freely forward. The part of the casing forward of the axis of the rudder stock is suitably proportioned in length to that part aft of the rudder stock, in order to efiiciently balance the rudder; The rudder casing may be indented at one or at each end at the top and bottom as indicated at 4;, see Figure 3, mainly in order to reduce weight.

lhe butterfly valve 5 is mounted to turn on a horizontal axis 6 as shown, the pivots 7 being secured to the valve in any suitable way. The journal bearings are indicated by 8. The axis of the valve is kept as far forward as will allow of just sufficient freedom of movement when the valve is in its normal position. In the drawings, the valve is shown as just fitting the casing 1 and adapted to close the passage through when it is vertical with the axis of the casing, and. stops 9 are provided to limit its The valve may however be made to tit and close the passage by edge contact with the casing in the usual manner of the buterfly valve. A suitable forked lug such as 10 Figures 2, 4, 5 and 6, may be secured to the valve for the connection of the operating device.

.cumference while still providing sufficient The-rudderstock is indicated by 11 and in the case illustrated in Figures 1 to 6, is tubular. A sliding core or rod 12 passing down'the' hollow stock 11, is employed to operate the valve. core slides in an-annular guide 13 at the bottom and carries an arm 14 rigidly fixed to it, the arm havinga slot 15 inthe end and passing through the lug 10, a bolt 16 or the like cOnne'ctingthetwo parts together. p

The low'er end 17 of the annular gu ide, forms the bottom' pintle' of therudder.

The "rudder stock is turned in the usual way. As shown, a tiller 18 is fixed to'the stock-11 and at the inner end of the tiller is carried abell-crank lever" 19 with forked end 20 which'embraces a collar 21 fixed to the sliding core 12. The bell-crank lever 19 is connected to a hand lever 22 pivoted tothe free end'of the tiller at 23,-by means of the couplingrod 24. A notchedsector-25 is also fixed to the tiller so-that the hand lever can beheld at definite points corresponding'to different angular positions of the valve. Any other suitable known mechanism may be employed for operating the valve from the head of the stock in place of that shown in the drawings If 'the' valve 5 were arranged vertically, 0bviously-the"core12"would require tobe turned instead of being slided as the operating arm l l would require to move angularly. This modification isshown diagrammati cally 'in'plainin Figure 7.

In place 'of a core '12; a tubular shaft 26 i may enclose" or surround the rudder stock and a lever arm 27 may be fixedthereto at the lower -'end' and another 'arm- 28 fixed to the iv'ot'7 of thevalveoutsidethe casing, see iagram in plan'in Figure 8.

The horizontal position of' the valve shown in Figure 4, is the normal one, that is to say, the valveis' in a'feathering position'in relation to the'walre and functionally inoperative.

In Figure 3 the valve is shown at an angle of about forty-five degrees. The actual position of the valve to cause the ship to pull up and'reniain stationary would be in'the neighbon'rhoodo fthis angle, p i'ohahly several degrees less in many cases; the best-position would have to be found by trial. By varying the angle of the'valve on each side of this neutral line, both the forward and astern speeds of the ship can be modified without varying the speed of or reversing 'the'propeller; Figure 6 shows theposition of the valve for fullspeedastern.

In cross section, the tubular body may be circular, elliptical or elongated, or-reetangularforthe full length or for pa'rt of its lengtlronly. For instance,the after'pa-rt of the tubular body maybe rectangular or in the form of a regular polygon, while the The lower end of the forward part may be either polygonal, circular or of a somewhat elliptical form as shown in the drawings.

I claim L'A'ship provided with a propeller, a reversing and controlling means comprising a tubular body mounted'to swing about a substantially vertical axis intersecting the axis of rotation of the propeller and to enclose the wake thereof said body being splayed laterally at the forward endthereof and a"butterfiy.," type of valve element behind the propeller and pivoted to the sides of said body inside with thepivots thereof in a horizontal plane, said valve elementbe ing mounted so as to swing from a feathering position in thewake of the propeller into an approximately verticalposition-relative to the axis of the tubular bodyand adapted-to completely close the passage through saidbody to the wake of thepropeller' andstopsto prevent said valve ele ment from passingbeyond said feathering and vertical positions, and means operated from inside the ship for swinging said'valve element and holding it inany desired angular position in the are through which it can move.

2 A ship'provided with a propeller, a reversing and controlling means comprising a tubular body mounted to swing about a substantially vertical axis intersecting the axis of rotation of the propeller and to enclose the wake thereof and a valve element of the-butterfly type pivotedin said body wholly close the passage through said body to the wakeof the propeller, and means for turning said valve onits axis from inside the'ship, comprising a shaft concentric with the "rudder post and having an independent motion, the lower endof said shaft being pivotally connected-to said valve element through lever arms, and the upper end tliereof'being movable-relatively to said rudder post b'y' means of mechanical elements connected with the manual controlling device.

A ship provided with a propeller,- a-reversing and controlling means comprising a tubular body mounted to swing about a substantially vertical axisintersecting-- the axis of 'rotationof the propeller and to enclose the wake thereof, said body being splayed laterally at the forward end, and a valve element of the butterflytype adapted to form an adjustable abutment in said body behind the propeller so as to-partially or wholly close the passage therethrough' to the wake of the propeller, and means operated from inside the'ship for-adjusting said valve'elementinto a full or'a partially feathering position or-into a full or a partially wake arresting position com prising a shaft concentric with the rudder manoeuvering tube and its hollow rudder 10 post and having an independent motion the stock of a valve plate pivoted within the lower end of said shaft being pivotally contube, a rod slidable in the stock and supnected to said valve element through lever ported in said tube, a fixed arm on the rod,

5 arms, and the upper end thereof being movand an operative connection between said able relatively to said rudder post by means arm and valve plate, and means for reoipro- 15 of mechanical elements connected with the eating said rod. manual controlling device.

4. The combination with a rotatable SIDNEY GOLDEN.

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