US1148321A - Variable-speed governor. - Google Patents

Description

W. F. KASPER.

VARIABLE SPEED GOVERNOR.

APPLICATION FILED AUG. l0. 1914.

Patented. July 27, 1915.

ll ATRNT FflQ.

WALTER F. KASPER, 0F FAIBJIVIONT, LWIINNESOIE,` ASSIGNOR T0 FAIRMONT MACHINE COMPANY, OF FAIRMONT, MINNESOTA, A CORPORATION.

VARABLE-SPEED GOVERNOR.

Specicaton of Letters Patent.

Patented July 27, 1915.

Application filed August 10, 1914. Serial No. 855,955.

To all whom 'it may concern.'

Be it known that I, WALTER F. lasrnn, citizen of the United States, resident of Fairmont, county of Martin, State'of Minnesota, have invented certain new and useful Improvements in Variable-Speed Governors, of which the following is a specification.

The object of the invention is to provide a form of governor by means of which the iow of the gas mixture to the engine can be regulated to supply the proper amount for developing` the power required of the engine.

A further object is to provide a device of simple construction and one which can be easily and quickly applied to an engine and will be positive and durable in its action.

A further object is to provide a governing device which can be easily and quickly adjusted to adapt it for different speeds of the engine.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a sectional view through the fly wheel and bearing of an engine, illustrating the application of my invention thereto, the governor being in the position it would assume when the engine is operating with governor valve wide open, Fig. 2 is a similar view, showing the position assumed by the governor when the engine is operating with governor valve nearly closed, Fig. 3 is a sectional view, transversely of the bearing of the fly wheel, showing-the pivoted arms forming a portion of the governor and connected with the gas supply valve. f

In the drawing, 2 represents a shaft on which the hub 3 of a fly wheel 4 is secured.

5 represents rods, radially mounted in the fly wheel 4 and provided with governor weights 6 slidable thereon, said weights being arranged diametrically opposite one another on each side of the axis of the fly wheel.

7 is a sleeve, secured to the hub 3. A sleeve 9 is mounted on the sleeve 7 and has a sliding movement" lengthwise thereof and is provided with ears 10 projecting outwardly at an angle to the axis of the sleeve 9 and provided with inner faces which are adapted to bear on anti-friction rollers 11 ywhich are mounted on the inner portions of the governor weights 6, When these weights are thrown out by centrifugal force in the rapid revolution of the engine shaft, the sleeve 9 will be moved lengthwise on the sleeve 7 proportionately to the outward movement of the governor weights.

The end of the sleeve 7 has an annular flange 12 thereon provided with beveled surfaces 13 opposing a similar surface 14 formed on the end of the sleeve 9, and the movement of the sleeve 9 resulting from the outward travel of the governor weights will cause the surface 14 to approach the surface 13. Rollers 15 and 16 having beveled or wedge-shaped peripheral surfaces are mounted on studs 17 and adapted to bear on the beveled surfaces 13 and 14 of the sleeves 7 and 9. The rollers 15 and 16 are free to revolve on the studs 17 and have also a limited longitudinal movement on said studs. The roller 151 prefer to mount in a rocker'arm casting 18, pivoted on a stud 19 which is secured to the crank case of the engine or any other suitable support. The other roller is preferably mounted in an arm 2O that is pivoted on the casting 18 at 21. The arms 18 and 20 are connected by a coiled spring 22, which is preferably attached at one end to the arm 20 and has an adjustable connection with the arm 18 at its other end through the threaded rod 23 and the adjusting nut 24. By moving this Ynut back and forth, the tension of the spring 22 may be regulated to increase or decrease the pressure of the beveled faced rollers on the surfaces of the sleeves. The rocker arm 18 has a connection through rods 25 and 26 with a valve 27, which Controls the flow of gas to the engine. The rollers being drawn together by the spring 22 exert a pressure on the movable sleeve 9 and force it toward the fly wheel, the parts 10 of the sleeve 9 engaging the rollers on the governor' weights and holding these weights intheir innermost position. These rollers, with their supporting arms, are pivoted at 19 in planes at right angles substantiallyl to the axis of said sleeves and any change in the position of a beveledy faced roller will cause a movement of the governor valve. The tension of the spring 22 normally tends to hold the rollers in engagement with the beveled surfaces of the sleeves and when the engine is at rest or when at any time the governor weights slack up in their pressure on the movable sleeve, while the engine is running, the rollers'will be drawn toward the crank shaft and into the space between the beveled faces of the sleeves and thereby open the governor valve. This will be the position of the parts when the engine is at rest.

Assuming that the engine is in operation as it gains speed, the governor weights, through centrifugal force, will move outwardly'on the rods 5 until at a certain speed, determined by the adjustment of the spring 28, the governor weights willl force the sleeve 9'inwardly and separate the beveled faced rollers against the tension of the spring 22. This overcoming of the tension of the spring will force the rollers out of the 'space between the beveled faces of the sleeves and operate the governor valve sufiiciently to shut off the supply of gas mixture until the amount admitted is sufficient to develop the power required of the engine. If there isno change in the load, the engine will continue to run at this speed, but when a load is applied and the speed is reduced,

' the weightswill slide toward the center of the fly wheel and the spring 22 will again become effective to open the valve, thereby admitting an additional supply of gas and permitting the engine to speed up to its former number of revolutions with kthe added load. To change the speed of the engine, it is only necessary to change the tension of the spring-22, thereby requiring a greater or less movement of the centrifugal weights to effect the required movement of the sleeve 9 and operate'the governor valve.

By means of the above described mechanism I am able to eliminate all springs in the fly wheel and rely entirely upon the one small spring that is interposed between the arms which support the beveled faced Wheels. This arrangement will allow the Vengine to beoperated from low to high speed, developing a minimum and maximum power by the simple adjustment of the device for regulating the tension of the spring.

In various ways the details ofV construction hereinshown and described may be modified and still be within the scope of my invention.

I claim as my invention:

l., The combination, with a revolving member, of weights carried thereby and adapted toV move outwardly through centrifugal. force, sleeves having a relative movement in a direction parallel with the axis of said member, one of said sleeves having an inclined surface in the path of said weights when thrown outwardly, and a valve operating means controlled by the relative movement of said sleeve.

2. The combination, with a revolving member, of weights having a radial movement therein and provided with anti-friction rollers, a sleeve having ears to contact with said anti-friction rollers and adapted to move in a direction parallel with the axis of said revolving member when said weights are thrown outwardly by centrifugal force, and a valve operating means actuated by the movement of said sleeve.

3. A centrifugal governor comprising a pair of concentrically arranged sleeves, one movable longitudinally with respect to the other, said sleeves having opposing beveled surfaces, beveled faced rollers fitting said surfaces and held thereon with a yielding pressure, means supporting said rollers and having connection with a governor valve, and centrifugally operated weights for actuating said movable sleeve.

el. A centrifugal governor comprising concentrically arranged sleeves having annular ianges thereon provided with opposing beveled surfaces, one of said sleeves being slidable lengthwise of the other sleeve, beveled faced rollers fitting the surfaces of said sleeves and held thereon with a yielding pressure, operative connections between said rollers and the governor valve, and centrifugal operating means for actuating said sliding sleeve.

5. A centrifugal governor comprisinr relatively movable members having beveled opposing faces, a pivoted arm, a second arm pivotally connected with said first named arm, beveled faced rollers carried by said arms and arranged to bear on said beveled surfaces, a spring connecting said second arm with said first named arm and having a suitable adjusting means for regulating the tension of said spring, said arms swinging freely on the pivot of said first named arm, said first named arm having means for connection with a governor valve and a centrifugally operating means for moving one of said members, the tension of said spring being normally sufficient to force said beveled faced rollers between said members and open said valve.

G. A centrifugal governor comprising a pair of concentrically arranged sleeves, one movableJ longitudinally with respect to the other, said sleeves having opposing beveled surfaces, centrifugally operated weights for actuating` said movable sleeve and means engaging said beveled surfaces and having connection with a governor valve.

7. A centrifugal governor comprising a pair of concentrically arranged, relatively movable sleeves, centrifugally operated weights for actuating said movable sleeves, and means engaged and operated by said sleeves and having connection with the governor valve.

8. A centrifugal governor comprising centrifugally arranged, relatively movable sleeves having opposing beveled surfaces, correspondingly faced rollers fitting said surfaces, means supporting said rollers and having connection with the governor valve, and centrifugally operated Weights for actuating said movable sleeve.

9. A centrifugal governor comprising a member having a beveled surface, correspondingly faced rollers disposed upon opposite sides of the aXis of said member and contacting with said beveled surface, means for yieldingly holding said rollers on said surface and increasing and decreasing the pressure thereon, and centrifugally operated Weights mounted for moving said member against the pressure of said rollers.

10. A centrifugal governor comprising a member having a beveled surface, rollers oppositely mounted and having corresponding faces to engage said surface, 011e of said rollers having a pivoted support, a spring for holding said rollers against said surface With a yielding pressure, means for increasing or decreasing the tension of said spring, and centrifugally operated Weights for actuating said member to force it against said rollers.

In Witness whereof, I have hereunto set my hand this 4th day of August 1914.

WALTER F. KASPER.

Witnesses:

T. G. WADE, D. H. LARsoN.

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

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