US831565A - Governor for explosion-engines. - Google Patents

Description

PATENTED SEPT. 25, 1906.

y J. E. MONETE.

GOVERNOR EOE EXPLOSION ENGINES.

APPLICATION FILED MAY 26, 1905.

@f MMM O O 9 l .01 2 m.. P E S D E T N E T A P J. F. MONUTT.

GOVERNOR FOR EXPLOSION ENGINES.

APPLICATION FILED MAYZB, 1905.

2 SHEETS-SHEET 2.

UNTTED sTATns MICHIGAN, ASSIGNOR TO OLDS GASO- JOHN F. MGNUTT, OF LANSING,

LINE ENGINE VORKS, OF LANSING,

OF MICHIGAN.

MICHIGAN, A CORPORATION GOVERNOR FOR EXPLOSION-ENGINES.

Specification of Letters Patent.

Patented Sept. 25, 1906.

Application filed May 26,1905. Serial No. 262,398.

To all whom it' may concern:

Be it known that I, JOHN F. MoNUTT, a citizen of the United States, residing at Lansing, in the county of Ingham and State of Michigan, have invented certain new and useful Improvements in Governors for EX- plosion-Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to governors more particularly designed for use on explosion-engines and of the type in which the speed of the engine is controlled by variably throttling the supply of explosive charge.

Heretofore governors of the type above referred to have usually been complex and expensive in construction, whereas governors of the hit or miss type are much more simple.

It is the object of the present invention to obtain a variably-throttling governor in which the mechanism is as simple as with those of the other type.

The invention therefore consists in the construction of governor as hereinafter set forth.

In the drawings, Figure l is a side elevation of the engine to which my improved governor is applied. Fig. 2 is a plan view thereof.

A is the cylinder of the engine. B is the valve-chest therefor, containing the eX haust-valve C and the induction-valve D.

E is the supply-conduit for the gas, F the air-inlet pipe, and G and H are valves for correspondingly varying the quantities of gas and air. The valves D H G are mounted upon a common stem I, which passes outward through the valve-casing and is actuated in a direction to seat the valves by a spring J. The exhaust-valve C is operated mechanically by shown,) but the valves D H G are of the puppet type7 automatically operated by the pressure of the incoming gas and air during the suction-stroke of the engine-piston.

IVith the construction as thus far described during the operation of the engine each suction-stroke of the piston will cause the opening of the valves D H G to their Vfullest extent and will permit the entrance of gas and air into the explosion-chamber. To govern the suitable mechanism, (not l speed of the engine, this full operation of the valves is prevented and a variable operation l obtained by mechanism of the following construction. l K is a collar upon the valve-stem I, and L l is a stop against which said collar strikes to l limit the movement of the stem. The stop L is preferably in the form of a sleeve longi- I tudinally slidable upon the valve-stem, one 1 face of which bears against the face of a l wedge M. This wedge is secured upon a i bearing N, attached to the engine-casing, and y is so arranged that it may be moved transversely to the axis of the valve-stem and in so doing will adjust the stop L longitudinally l upon the stem I. I O is a bell-crank lever fulcrumed upon i, the casing and connected by links l? to the wedge M. l Q is a spring normally operating upon the bell-crank O to raise the wedge M.

It is a rod connected to the bell-crank lever O and extending into proximity to the engine-shaft.

S is a gearing i for operating the valve-actuating mechanism,

(not shown,) and T is a crank driven by the gearing S and connected by the rod U to a rock-arm V, which bears against the end of the rod R. Thus the rotation of the crank T will cause the reciprocation of the rod R and rocking of the bellcrank lever O, which in turn will raise and lower the wedge M and will shift the stop L to vary the limits of movement of the stem I and valves D I'I G thereon.

The timing of the mechanism above described is such that with each movement of the valve-stem I the wedge M will also be operated, i'irst moving the stop L toward the collar K during the downward movement of the wedge and then withdrawing said stop during the upward movement. The upward movement of the wedge is effected by li the action of the spring Q, which returns the bell-crank lever O and rod R upon the withdrawal of the rock-arm V, and this 'movement is so timed that the wedge will be lifted and the stop L withdrawn in advance of the l movement of the stem I to open the valves D l H G. Thus the full opening of said valves will be permitted if the operation of the parts just described is `not interfered with. To

ICO

lproduce a variable operation of the valves,

lever Y.

Z is a stepped plate secured to the rodR and having a series of shoulders or notches a, with which the latch X is adapted to engage. When the engine is at rest, the latch X will be withdrawn from the path of the shoulders a of the tion of the engine the governor W is thrown into action it will tilt the lever Y and depress the latch X vby means of a connectinglink X. The position at which the latch X stands therefore depends upon the speed at which the engine is running, and the higher the speed the farther will the latch be depressed. Thus if the latch is sufficiently depressed to engage with the first shoulder (marked a) this will hold the rod R from return movement, andthe wedge M will be retained in its depressed position. As a consequence the stop L will be held in a position where it abuts against the collar K and will prevent any movement of this collar onA the stem I, to which it is attached. If in place of the latch engaging with the notch a/ it is held to engage with an intermediate notch a2, a partial return Y permitted, which. will partially withdraw the Wedge M. This will permit a certain movement of the stem I but the stop L is, nevertheless, in a position to limit the movement of the stem, so that the valves D H G are only partially opened and the inlet for the gas and air is restricted. Thus through the operation of the governor a variable operation of the valves is obtained, and the supply of the explosive mixture to the engine-cylinder is regulated to maintain a practically uniform speed.

I preferably make use of the rod R and its operating connection as a part of the mechanism for operating the igniter, and to this end the rod R is hollow and has arranged therein the rod R. This rod R passes out from one end of the rod R and is pivotally connected with the pin U, which connects the link U with the rock-arm V. The opposite end of therod R has connected thereto a pin R2, which passes out through a slot in the tubular rod R and is connected with a sleeve R3 thereon, to which the igniter-operating dog R4 is attached. In operation the movement of the rod R is limited, as has been before described, by the latch X g but the movement of the rock-arm V and the rod R, at-

tached thereto, is always the same, so that the igniter will be operated in the same manner regardless of the condition of the valveoperating mechanism.

plate'Z; but when during the operamovement of the rod R 'is vwedge arranged to bear What I claim as my invention is*- l. The combination with a valve and a stem therefor, of a stop sleeved on said stem for limiting the opening movement of said valve, a wedge in the path of said stop and means for reciprocating saidwedge before each opening of said valve, for the purpose described.

2. The combination with a valve, of a stop for limiting the opening of said valve, a wedge in the path of said stop, means for reciprocating said wedge before each opening of said valve, a governor and means actuated thereby for lockingsaid wedge at different points in its reciprocation.

3. The combination with a valve and its operating-stem, of a shoulder on said stem, a stop in the path ofV said shoulder sleeved about said stem, a wedge arranged to bear 'I against said stop and extending transversely rocating said wedge beforel each opening of 4. The combination with a valve and itsactuating-stein, of a collar on said stem, aspring sleeved on said stem and bearingA against said collar operating to normally press said valve to its seat, a stop-collar sleeved upon the stem and in the path of the collar fixed thereto, a transversely-extending collar, and positive means for reciprocating said wedge before each opening of the valve, for the purpose described.

5. The combination with a valve and its roo stem, of a stop movable longitudinally of said stem and adapted to limit the opening ofsa-id valve, a wedge engaging said stop, meansffor? i:

reciprocating said wedge before each opening-5 of said valve and means for arresting said ro 5 wedge at variable points in its return p move-` ment, for the purpose described.

6. The combination with a valve, of a stop.

for limiting the movement -of said valvef sleeved upon the stem thereof, a transversely-r1 o extending wedge against which said 4stop bears, a bell-crank lever connected to said wedge to actuate the same, a reciprocatory rod for actuating said bell-crank lever, posiof the axis of said stem andrneans for recip- "j against said stoptive actuatin(T means for moving said rod in I I b b one direction and yieldable actuating means for said rod in the reverse direction, a stepped bearing upon said rod, a coperating latch, a centrifugal governor, and connections between said Ofovernor and latch for moving thej 1 2o latter across the path of said stepped bearing to vari ably restrict the movement of said rod and the opening of the valve.

In testlmonywhe'reof I aflix 1n presence of two witnesses.

JOHN F. MCNUTT.

Witnesses:

E. E. HARVEY, J. GRAHAM CAMPBELL.

my signature l

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