US1103077A - Engine-governor. - Google Patents

Description

E. REEVES.

ENGINE GOVERNOR.

APPLIOATION FILED MAR.22, 1913.

Patented July 14, 1914.

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1HE nomas PETERS ca., WASHINGTON, 1:4 c.

UNITED STATES PAilENT OFFICE.

CLIFTON'REEVES, OF TRENTON, NEW JERSEY, ASSIGNOR 0F ONE-HALF TO WILLIAM P. CUBBERLEY, 0F ROBBINSVILLE, NEW JERSEY.

Enorme-GOVERNOR.

Specification of Letters Patent.

Patented July 14, 1914.

lApplication led March 22, 1913. Serial No. 756,117.

T0 all whom it may] concern:

Be it known that I, CLIFTON REEvns, of Trenton, in the county of Mercer, and in the State of New Jersey, have invented a certain new and useful Improvement in Engine-Governors, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to the class of engine governors which are known as shaft governors.

The object of my invention is to provide a governor for engines which is balanced on opposite sides of the shaft without the necessity of providing a number of different balancing weights `as was hitherto found necessary in previous types of governors of this character, the balancing in a simple manner tending to avoid the undue lstrain which is put upon governors that are un balanced or imperfectly balanced, especially in starting and stopping the engine.

The object of my invention is, furthermore, to provide a governor of the above kind 4in which the unreliability of the coil spring which has hitherto been a serious olojection to governors of this character, Owing to the change in pressure of the spring, is done away with, thereby avoiding the con' stant need of regulation `and attention of an expert machinist to keep the governor in proper adjustment.

One object of my invention is thus to rovidev a governor of the above character w nch shall maintain its adjustment, and which may be easily regulated aty all times to ac* commodate the governor to the speed desired.

Still a further object of my invention is to provide a construction of the kind indicated, which is economical in construction, and which has few parts, thus avoiding the necessity of elaborate repairs.

Another object of my invention is to provide a governor of this kind in which the parts may lbe readily applied to standard governor wheels and, in fact, other types of governors quite different in construction.

lNhile my invention is capable of embodiment in many different forms, by way of illustration l have shown one form of my invention in the accompanying drawings, in which- Figure l is a side elevation of a governor made in accordance with my invention; and,

-Fig. 2 is a vertical cross-section of the same, taken through the center of the governor.

In the drawings l have shown an engine shaft 1 having a governor wheel 2 thereon. Attached to the governor wheel 2, there is an arm 3 pivoted upon a shaft 4 located at one side of the governor wheel 2, and near the shaft 1. One end of the arm 3 carries a plurality of removable balancing weights 5, while the other end of the arm 1 has a slot 6 to receive an adjusting screw 7 having a locking bolt 8 in said slot. Upon the screw 7 in said slot there is provided a sliding carriage 9 which has a pivot 10 upon one end thereof. Upon the other side of the sliding carriage 9 there is a screw threaded bolt 11 carrying a nut 12. The pivot 10 receives one end of an arm 18, the other end of said arm being screw threaded to a weight 1&1. llVithin the weight 111 there is a slot or cavity 15 in which there is located a pin 16 for attachment to the end of a leaf spring 17. The other end of the leaf spring 17 is lixedly attached to a bracket 18 upon a portion of the governor wheel 2, while intermediate its ends the leaf spring 17 has a pair of screws 19 having adjusting nuts 19a located over a connecting plate 19", one` end of each of which is attached to a similar bracket 20 upon the body of the wheel 2. The parts thus described are arranged so that the centrifugal force due to the rotation of the wheel will cause the weight 11 to move outwardly away vfrom the axis of rotation. In order to control the movement of the weight 1-1 outwardly and to make said movement gradual and uniform, there is attached to the arm 8 a pist0n 21, said piston 21 being attached thereto by an arm 22, which arm 22 is adjustably carried in the end of a Ibracket 28 pivoted upon the arm 3. The piston 21 is supported within a dash pot 21 pivoted to a bracket 25 secured to the inner face of the governor wheel 2. In order to provide a limit to the movement of the weight 14: and the arm 8, l also provide a stop 26 attached to the inner face of the wheel 2, said stop having a fiber plug 27 which contacts with one end of the arm 3. The arm 8 has an elongated opening 28 at its center to permit the passage of the shaft 1 through the same. Upon the arm 3, around the opening 28, l have located an eccentric 29, and around the eccentric there is situated a sleeve 30 made in two halves, and attached together by means Y 14 to move outwardly, owing tothe centrif- Ymoved in a direction toward the center of ugal force and in opposition to the force of the spring 17. rIlhe Voutward movement of the weight 14 will cause the arm 3 to be the shaft 1, 'thereby decreasing the extent of movement of the eccentric 29 from one side to the other of the shaft 1. The reduction of the length of movement of the eccentric 29 will reduce` the extent of movement'of the valves controlled by the valve rod 32, thereby decreasing the amount of steam admitted to the engine in the case wheie the governor controls the movement of a steam engine. The amount of steam will be thus reduced in this manner until the speed of the engine is lowered sufiiciently to stop the further outward movement ofthe weight 14. rIlhe movement of the weight 14 toward and fro-m the center of the shaft 1 is rendered uniform by the presence of the dash pot 24 which coperates with the arm 3. The presence of the dash pot 24 will also prevent sudden movements of the weight 14, owing to the inertia of the valve gear, thereby avoiding a breakage or disarrangeinent which might occur in this manner. Any sudden shock to the governor by reason of the stopping of the enl gine is prevented by the buffer made of fiber or other similar material 27. The adjustment of the governor may be readily effected by adjustment of the'nuts 19a, the adjustment of the screw 7 to move the sliding carriage 9 toward or away from the center of the shaft 1, or by changing the weights 5 which are carried upon the other end of the arm 3. By this means a very 4perfect adjustment .of the governor may be obtained, which adjustment remains permanent. The eccentric 29 is also oiled by the oil from the oil cup 33.

vWhile I have describedv my invention spring, a weight thereon, a link connecting the weight to -tlie arm, and a screw located on the arm to adjust the position of the link connection therewith.

- 2. A governor comprising a shaft, a valve controlling arm connected thereto, a band spring, a weight thereon,'a link connecting the weight to the arm, and a screw located longitudinally on the arm to adjust the position of the link connection therewith.

3. A governor comprising a shaft, a valve controlling arm connected thereto, a band spring, a weight thereon, a link connecting the weight to the arm, and a screw located longitudinally in a slot on the arm to adjust the position of the link connection therewith.

4. A governor comprising a shaft, a weighted valve controlling arm connected thereto, having means for attaching additional weights thereto, a band spring, a weight thereon, a link connecting the weight to the arm, and a screw located on the arm to adjust the position of the link connection therewith.

5. A go-vernor comprising a shaft, a weighted valve controlling arm connected thereto, having means for attaching4 additional weights thereto, a band spring, a weight thereon, a link connecting the weight to the arm, and a screw located longitudinally on the arm to adjust the position of the link connection therewith.

6. A governor comprising a shaft, a weightedy valve controlling arm vconnected thereto, having means for attaching additional weights thereto, a band spring, av weight thereon, a link connecting the weightto the arm, and a screw located longitudi` nally in a slot on the arm to adjust the position of the link connection therewith.

In testimony that I claim the foregoing I have hereunto set my hand.

CLIFTON REEVES.

Witnesses: i

' J. FREUDENVALL,

L. BRoDnRioK.l

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

v Washington, D. C.

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