US1049099A - Marine-engine governor. - Google Patents

Description

I T. JACKSON. MARINE ENGINE GOVERNOR.

APPLICATION FILED DEC. 13, 1911.

04 1 9 1 L 3 Q 6 D m m .w a P name sTaTs PAT TQE.

THOMAS JACKSON, OF LONDON, ENGLAND, ASSIGNOR TO HIMSELF, AND ALLAN RAMSAY, OF CHESHAM, FOLKESTONE, ENGLAND.

MARINE-ENGINE GOVERNOR.

intense.

Application filed December 13, 1911.

To all whom it may concern:

Be it known that I, Tr-IoirAs JAoKsoN, subject of the King of Great Britain and Ireland, residing at 7 Milton Court road, New Cross, London, S. 13., England, have invented new and useful Improvements in Marine-Engine Governors, of which the following is a specification.

This invention relates to marine engine governors of that class in which a gravity controlled device carried fore and aft on the ship is utilized to control the operation of a power mechanism in which the atmospheric air is utilized as the power medium for actuating the throttle valve, and has for its objectthe provision of means whereby the action of governing can be carried out in a simpler and more effective manner than obtains with known apparatus and with practically no risk of derangement or stoppage of action from the usual conditions that obtain on board ship.

My invention consists in the provision of improved control means connected to the power mechanism by which the atmosphere is utilized as the power medium enabling simple mechanism to be used for control ling purposes, so that both double action and reversible effect can be obtained.

In order that this invention may be the better understood, I will now proceed to describe the same in relation'to the accompanying drawing, reference being had to the letters and figures marked thereon.

Like letters refer to like parts in the various figures in which Figure 1 is a diagrammatic view of my apparatus showing its various parts adjusted for head seas, the anticipator being in the normal position and the connecting pipes being indicated in dotted lines for clearness. Fig. 2 is a similar view to Fig. 1 but showing the anticipator in its operated position. Fig. 3 is a diagrammatic view of the apparatus adjusted for stern seas. Fig. 4 is a similar view to Fig. 3 but showing the anticipator in its operated position.

To carry the invention into effect I use one of the well known forms of gravity control gear or anticipator, in the example illustrated a tiltable tube at having within it a mobile element, such as mercury 72 is employed. The tiltable tube a is adapted to rock about the axis 0, suitable adjustable stops o and w being provided to limit Specification of Letters Patent.

Patented Dec. 31,1912.

Serial No. 665,515.

such movement. The tube a is adjustably carried in a clip y provided with an adjusting or tightening screw 00 in order that the position of the center of the tube relative to the axis 0 may be adjusted. The clip y carries rigidly attached to it a depending lever (Z. In proximity to and beneath the tube a a valve box 6 is disposed, in the body of which a double piston valve f is adapted to slide. Attached to the double piston valve f is a rod 9 which is pivotally connected to the lever (Z, a slot being formed in the lever (Z to permit of radial freedom of action of the moving parts.

The valve box a is connected to a suction or exhausting device such as for example, in the case of a steam plant, the condenser 92 by a pipe m, and by means of pipes h and z to a two-way reversing cook or valve 70,- the ends of the valve box 6 being left open in order to permit of free entry of the atmosphere. The two-way cock is is connected to a cylinder 9 by two pipes 0 and p and is provided with a plug Z in order that the pipes h and 2' may be connected up with the pipes 0 and 7) respectively or vice versa. The cylinder 9 is provided with a piston r and piston rod 3 to which is attached a lever t rigidly connected to the shaft to of the throttle valve.

The operation of the device is as follows :-Referring to Fig. 1 it will be seen that the tube a has been slid through the clip 3 to the right, the mercury I) being in the right hand end of the tube a which therefore rests upon the stop 4) and that the lever (Z has moved the double piston valve f to the left, also that the plug Z has been adjusted so as to put the pipes 71 and 2' into connection with the pipes 0 and 7) respectively. Therefore the piston i will be drawn up to the top of the cylinder 9 by the vacuum acting through the pipes 0, h and m, the under side being open to the atmosphere through the pipes p and 2'. Assuming that the head of the vessel is on the left side of the figure then the anticipator and two-way valve are adjusted for head seas; and while in the posit-ion shown the throttle will be maintained open. Upon the pitching of the vessel the mercury 79 will flow through the tube a to the left hand end as shown in Fig. 2 and cause the tube a to rock from off the stop 4) on to the stop to and move the double piston valve f to the right. This action will put the stop end of the cylinder Q into communication with the atmosphere through the pipes 0 and it and the under side into com munication with the vacuum through pipes p, 2' and m which action will cause the piston r to descend and through the rod a lever 7' and shaft 24 to close the throttle which will be maintained closed until an opposite inclination of the vessel causes the tube a to resume its first position. In dealing with stern seas the tube a is slid through the clip y to the left and rests upon the stop to this will move the double piston valve f to the right, (see Fig. 3) the plug Z must be adjusted so as to put the pipes 7L and 2' into connection with the pipes 22 and 0 respectively the piston r will be again drawn up to the top end of the cylinder as in Fig. 1 by the action of the vacuum but through the pipes 0 2' and in while the under side is in communication with the atmosphere through the pipes p and h. The throttle will be maintained open in precisely the same manner as described for head seas. Upon he pitching of the vessel the valve 1 will be moved to the left by the action of the mercury Z and will cause and. maintain the closure of the throttle (Fig. l) in exactly the same manner as before shown in Fig. 2.

In order to provide for difference of submergence of the propeller due to loading, the stops 1) and w are made adjustable, and r e adjusted so as to cause a greater angle to be passed through before operation when the vessel is loaded and a smaller angle when the vessel is light.

It is obvious that a pump driven from the engine and connected to a suitable reservoir may take the place of the condenser.

Having thus fully described my invention, I claim as new and desire to secure by Let ter Patent Governing apparatus for marine engines, consisting ot a pivoted gravity controlled device, means for varying the position of the controlling weight of said device to either one or other side of the axis of movement of said device, an air valve operated by said gravity controlled device, said air valve alternately admitting air at atmospheric pressure and permitting the exhaustion of such air, a power cylinder and piston for operating the control. device of the engine, pipes leading from the two ends of the power cylinder to the said air valve, a reversing cock or valve, disposed intermediate of the said power cylinder and said air valve in the said pipes adapted to change over the said relative connections at will and exhausting means connected to the said air valve substantially as described.

In testimony whereof I have signed my name to this specification in the )resence of two subscribing witnesses.

THOMAS JACKSON.

lVitnesses 2 RICHARD A. HOFFMANN, CHARLES J. R. BULLOUGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. 0.

Images