US1413586A - Marine-engine governor - Google Patents

Description

"T. JACKSON.

- MARINE ENGINE GOVERNOR.

APPLICATION FILED JUNE II, 1919.

Patented Apr. 25, 1922.

www W M Arr'y.

7 T all whom it may concern im rms ew prion.

THOMAS JAoKsoN, or unwise-AM, Lennon, ENGLAND, ASSIGNOR To ALLAN Ramsay,

or FOLKESTONE, ENGLAND.

MARINE-ENGINEGOVERNOB.

i Specification of Letters Patent.

, Patented- Apr. 25, 1922. im lication-riled June 11, 191.9. Seria1No.303,467.

(GRANTED UNDER THE rRovIsmNs or THE Act: or MARCH 3, 1921," 41 STAT. I, 1313.

Be it known'that THOMAS JAoKsoN, subject of the King of Great Britain and Ire.- land, residing at 27 'Mount' Pleasant Road, Lewisham, London, S.'-E;, England, has invented new and useful Improvements in Marine-Engine Governors, (for which I have filed application in Great Britain, November 17, 1917, Patent No. 120,768,) of which the following is a specification.

This invention relates to marine engine governors in which a power device operating the throttle valve iscontrolled by an inertia governor driven by the engine itself, orby an anticipatory v governor of the tiltable gravity controlled type having a mobile'body and'adjustable relative to the ship and controlled by the angular movement of' the ship in a vertical plane while traveling through the water, or by both of said governors. This invention refers more particularlyto the class of governing device described in the specification ofUnited States Letters Patent No. 919713, issued 27th. April 1909, but it must be understood that it is applicable to any similar type'ofgovernor in'which a power device, operated by fluid pressure, is adapted'to operate the throttle valve or other regulating device of the engine.

In order that the invention may be the better understood I will now proceed to describe the same in relationto the accompanying drawing, reference bei'ng had to the letters and figures marked thereon. Like letters refer to like partsin the various figures, in which Fig. 1 is a general view of the arrangement ofan' inertia governor, an anticipatory governor of the tiltable gravity controlled type, a control valve and a power device for operating the throttle valve with a relay device arranged in connection with the control valve. 7

Fig. 2 is a sectional detail view of cylinder of the relay device, the piston with its rod being shown in'full.

Fig. 3 is a view of the stem of the control valve with an adjustable locking collar.

Referring to the drawings, a designates an inertia governor which is operated from the marine or other engine, I) an anticipatory governor comprising a valve device for controlling the reverse operations of the power device d to open tiltable member, a a V and close the steam throttle of the engine, and e a relay device which is connected with and operates'the valve in the valve device 0'."

i designates a pipe connection in which a vacuum is maintained, it being connected, for example, with the condenser system of the marine or other engine, so that there Wlll be present in the. pipe c the same vacuum as is-maintained in the condenser.- The easlng- 0 of the valve device is alsoconnected with the pipe 2' as here shown through the pipe 71 andthe interiorjof the governor Z2 is also connected with the pipe i ashere shown through the pipes 11? and 75 The relay device 6, is also connected with the pipe 2' as here shown'throughlthe pipe 11 governor deviceb, and pipes i and 2' and it isalso connected withthe piped, by a pipe 2' in which a valve is located and which valve is the top plate 8 of the cylinder 7" will move the piston g-downward and thus movethe valve in "the valve device'c so that the atmosph'eric pressure will be cut-off from below the piston in the power devised and the vacuum applied to that side, and at the same time applyingupper side of the piston of the powerdevice and thus move it to close the throttle. -Nhen, however, the ftiltable' member is returned to itsadjusted position by the mobile member, the vacuum is cut off from the under side of the piston g whereupon the spring y will return the piston g to the position shown (Fig. 2) and the valve in the valve device 0 will be returned to its original positionto .reverse the connections above described; and again have the power device d The return of the piston g by the spring j is secured by be effective in the relay device 6,

atmospheric'pressure to the open the throttle. V a

reason of the fact that ,atmospheric pressure reaches the under side of sectional area which is regulated by the screw 70.

The cylinder f is fitted with an ad ust-'- able valve is by which a certain amount of leak to atmosphere or bye-pass from the bottom to the top of the piston 9 can beeffected sothat in the event of the operation of the inertia governor: a, or the anticipa f tory governor Z), being of merely momentary effect, the relay device a is not completely operated and the throttle valve position is not interfered with. The inertia governor a shown in the drawing comprises an arm carrying a weight adapted to be oscillated increase beyond the predetermined speed occurs then the arm carrying the weight moves relatively to-the lever thereby putting the relay device 3 in communication with the vacuum. 7 j V Quitejapart fromthe saving of wear and tear and the useless expenditure of energy, the objectionable feature vof hunting between the device governing the operation of the engine and the operation of the engine itself, is entirely avoided.

It will be recognized that only one relay device 6 needbe used when both an inertia and an anticipatory governor are connected, as shown in the drawing, as such relay device is common to the two;

It has been suggested in the past thaton excessive speed being attained by the engine, the control valve '0 of the power device should be locked when such extreme conditions have obtained, necessitating the unlocking ofthe locking devicevby hand. In order to make this provision more useful the locking device is made adjustable so that the locking operation can be adjusted to take place at any predetermined speed desired. This is effected byscrewing the engaging collar Z on the upper end of the spindle m of the control valve 0 and when adjusted by fixing it-rigidlyin position by 'a lock nut n so as to engage the spring deengines, comprising a power device operated in reverse directions by atmospheric pres sure to open and close a throttle; a valve device for controlling the operation of the power device; a relay device for controlling theoperation of the valve device; said device being operated in'one direction by atmospheric pressure; means for maintaining a vacuum; anda governor device for applying the vacuum to the relay device whereby it may be operated by atmospheric pressure to move the said valve device. v

' 2. Governing apparatus for marine engines comprising apower device for, the throttle which is operated by atmospheric pressure in its control of the throttle; means for maintaininga vacuum; a valve device for controlling the application of j the vacuum to either side of the power device; a' second power devicefor operating the valve device and also ope-rated :in-onedir rection by atmospheric pressure; and a device for controlling the application of the vacuum to the second power device, said device comprising a tiltable member'movable in accordance with the pitch of a ship above a predeterminedamount. t

3. Governing'apparatus for marine'engines comprising afpower device for the throttle which is operated by atmospheric pressure in its control of thethro't'tle; means for maintaining a vacuum a valve device for controlling V the application of the vacuum to either side of the power device; a second power device for operatingthe valve device and also operated ino'ne dire'ction by atmospheric pressure; and an inertia device operated from the engine for controlling the application of'the vacuum to when the engine Y the second power I device exceeds a predetermined speed.

a In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses, V

THOMAS "JACKSON.

Witnesses:

DORIS Hiroriooox, OLIVE Wnsr.

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