US1140000A - Carbureter for explosive-engines. - Google Patents

Description

w.1'. RUBESKY. CARBURETER FOR EXPKLOSIVE ENGINES.

APPLl'CATlON FILED` OCT. Il 19091 RENEWED JUNE 17. i914.

Patented May18 r. Engines, of Which the following is a speci- ATENT onirica.

WILLIAM J. BUBESKY, OF MINNEAPOLIS, MINNESOTA. i

. QARBURETER FOR EXPLosrvninvsrivns.4

Specification o f Letters Patent.

Patented May 18, 1915.

' Application filed-October 11, 1909, Serial No. 522,200. Renewed .Tune 17, 1914. Serial No. 845,722.

To all whom it may concern Be it known that I, WILmAM J. RUBESKY, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Carbureters for Explosivefication.

The object of my invention is to provide a carbureter by means of which a thorough explosive Amixture can be obtained under various conditions-and speeds of the engine and an even distributioneiected with 'a high or low grade volatile oil.

Overheating is responsible for injury or destruction to various parts of a cylinder, especially those of the air cooled type and a thorough explosive mixture, or one Wherein combustion will be practically complete,

capable of convenient, accurate adjustment in case of change of temperature or variations in the grade of oil, and one which can be easily regulated by an unskilled operator.

A further object is-to provide a carbureterl in which all parts are easily accessible for inspection and cleaning.

A further object is to provide a carbureter capable of application to a 2 or 4 cycle .engine and particularly designed Yto meet the requirementsof a 2. cycle engine.

My `invention conslsts generally 1n various constructions and combinations, all

vas `hereinafter described and particularly pointedout in the claims.

In the accompanying drawings forming apart of this specification, Figure 1 is a -vertical sectional view of a carbureter embodying my invention, Fig. 2 is a detail sectional view of a modiiied construction, showing the valve closed. Fig. 3 is a similar view,'illustrating the valve open. A

In the drawing,2 represents the oil supply pipevand 3 an oil duct communicating with the pipe 2 through a suitable screen or strainer 4. Th'e duct 3 leads into a chamber 5, provided within a casing 6 and has a valve seat 7 that is adapted to receive a needle valve 8 that is carried by a rod 9 v and is normally held on the seat 7 by a coil spring 10. The tension of this spring is regulated by means of an eXteriorly threaded sleeve-11 having a socket 1 to receive the upper end of the rod 9 and fitting with- .in an eXteriorly threaded split collar 13 `hav- 39, which is ,coiled around the rod 37.

ing a lock nut 14. Thethreadsof this collar are tapered so that its sections will be clamped around the sleeve when the -lock nut is turned down. A series of arms 15 are pivoted at 16 within 'the valve casing and project outwardly and upwardly into the path of a float 17. This float is adapted to move up and down on the rod 9 `Within the chamber 5 and contact with the arms 15 to raise the valve 8 oif from its seat against the tension of the Spring 10 and admit oil to the chamber 5. The degree of resistance of the spring 10 to the movement of the valve may be easily regulated by the adjustment of the sleeve 11. The casing 6 has a removable cap 18 which permits access to and in the space between the cylinder and the tube are ranged va series of wicks 25, which I preferably term armored, having a series of non-corrosive wires coiled about a comparatively small cotton core. If preferred, the cotton core may be omitted entirely and wicks used composed entirely of small wires.

An annular space 26 is provided above the groove 20 and between it and the lower ends of the wicks, through which the oil is fed to the wicks. An elbow 27 is provided in the lower end of the ring 21 and has an air intake opening 28 and a valve 29. -A casing 30 is mounted on the cylinder 22 and has an annular passage 31 formed therein, communicating through ports 32 in said cylinder with lthe upper ends of the armored wicks, and the tube 24 has a Haring upper portion 33, provided withvports 34,

vpposite substantially the ports 32. A valve 35 controls the admission of air to the passage 31. On the casing 30 is mounteda second elbow 36, having a throttle valve 37 and-having means for connection with the engine cylinders. A rod 37 has its lower end threaded into thev wallof the elbow 27 and provided on its upper end with an exteriorly threaded sleeve 38 that is adapted to bear on the upper end of a spiral spring The j adjustment of the sleeve 38am-said rod regulates the tension of said spring and both of the elbows may be swung around to any desired position with respect to the carbureter casingV for connection with the engine cylinder. To move the elbow, it is only necessary to loosen the rod 37 to permit the rotation of the elbows to the desired position. Upon the rod 37 a cone shaped valve 40, preferably of cork, 1s mounted, and' adapted to slide vertically with the suction stroke of the engine against the pressure of the spring 39. The taper of this cone shaped valve corresponds to the flare of the tube portion 33 and when the valve is in its depressed position it is seated snugly against the said flared portion and closes` the ports 34. This valve slides freely on the rod 37 and a series of annular grooves 41 are provided therein to collect sediment and prevent the valve from sticking. A chamber 49 is formed in the casing 30 above the normal position of the valve.in which a thorough mixture of the air andoil is made before entering the passage leading to the cylinder. An annular passage 43 is provided in the inner wall of the cylinder-22, inclosing the armored wicks and communicating with a passage 44 leading to the upper portion of the chamber 5 above the normal position of the float 17.

In Figs. 2 and 3 I have illustrated a modification in the construction of the carburetor, which consists in providing a valve 45 having ports 46 in its walls above the ports 34 which communicate with \the armored wicks. The upper end of the valve has an annular flange 47 formed thereon, provided with ports 48 which are located near similar ports 49 in the upper end or head of the valve. i These ports, 48 and 49, are located in a plane substantially at right angles to one another so that the oil and air passing therethrough will meet and be thoroughly mingled before passing to the cylinder. The lifting of the valve 45 throughthe suction in the cylinder will cause it to assume the position shown in Fig. 3, exposing the portsv 84 and allowing a portion of the mixture to pass through the ports 46 and from thence through the ports 49 into the path of the mixture flowing through the ports 48. In this way a more complete mixture of the air and oil will-be obtained and the oil is thoroughly atomized before entering the passage to the cylinder. Vith this construction I am able to thoroughly atomize a low grade oil, provision being made for bringing the air directly in contact with the vapor and causing it to be thoroughly saturated. All the principal working parts of the carbureter move vertically, thereby insuring uniform action and reducing the wear to a minimum. All removable parts are independent of one -in one or more cylinders, the cone valve? will immediately close and shut off communication with the supply andon the next suction stroke after back fire the valve will respond and feed any of the other cylinders which it is possible to operate, thus permitting the operation of a defective engine.

rI`he cone valve, when closed, conceals the ports leading to the wicksiand I am able to use a fibrous wick without danger of damage to it in case of back firing in the engine, as the valve will instantly close and shut off the ports through which the oil is delivered. lVhen the valve rises on the suction stroke a narrow passage will be formed Abetween it and the valve seat and the oil supply or vapor ports will saturate the passing currents of air being delivered at right angles substantially thereto, and as the area of the passage can be lvery accurately controlled by means of the throttle valve, it follows that the quantity of gas allowed to passthe valve .will depend upon the speed of the engine and the work the operator desired it to do. The inner surface of the casing 30 is corrugated, as indicated at 30', and the effect of this corrugation is to break up the air currents and finish the mixing of the vapor therewith. l/Vith this apparatus, athorough mixing of the charge will take place at the seat of carburization and when the charge passes the throttle valve it is ready to be4 kture is obtained. rIhe mixture probably will be found too rich for a low throttle and lowering of the oil level by temporarily cutting off the supply will be necessary, but by experimenting a short time the desired adjustment can be readily determined. In case low and half speeds are burning satisfactory cliarges, but full speed too rich a charge, I may increase the quantity of air entering by adjusting the vapor port supply pipe valve until the desired mixture is attained for full speed. In many cases a suitable adjustment can be effected by means of the oil level and the cone valve spring tension.

I have found the armored wick very satisfa'ctory', as it can be easily cleaned by screwing the drain block and emersing the carbureter in boiling water.

prefer to make the outside easing and base of aluminum. The ordinary wick or those of felt are undesirable, as the small bers 4loosen therefrom, frequently Working into the vapor outlet ports and clogging'them.

VThe wire covered wicks are thoroughly procient oil from the Wires to become thor-y oughly saturated. The wicks being tightly packed in the path of the air currents and extended above the ports, a considerable quantity of oil cannot gat/her at any one point, but the surfaces of the wires exposed to the currents will carry such a considerable quantity of oil that small wicks can be used and very eiiicient results obtained, and although the wicks are 'packed closely together the air currents will cross them with- .out difliculty and a surplus of liquid will always be held by the wicks in the point of Carburation.

I prefer to arrange the vapor outlet ports 34 a little higher than the air supply ports 82, as this tends to direct'the currents of air upward and assist the wicks in'maintaining a surplus of oil at the seat of carburi'za'- tion. The main air supply, passing up through' the center of the wick chamber warmed slightly by its passage through the chamber, will tend to raise the temperature of the oil and will prevent water which may collect around the base of the wick chamber from freezing. The throttle in the main air supply .opening is designed particularly for use in starting in coldweather. At such times it is nearly closed and after the engine is started and warmed up the opening may be enlarged. I am also able by the adjustment of this lower throttle to obtain a. lighter or richer mixture of the air and oil, as may be required.

I claim as my invention.

1. A carbureter comprising inner and outer wick tubes and wicks having a fibrous core and a metallic covering 'therefor disposed between said tubes, means for delivering oil to said wicks, said tubes having ports in their upper walls and said inner tube having an air intake, a valve arranged to close the ports in said inner tube, said valve being adapted to open on the suction stroke The wires varound the wicks are non-corrosive and I l' of the enginel and permitting currents of air to said Wicks, substantially as described.

2.A vA carbureter comprising inner anr1 outer Wick tubes, a wick located between the same, means for supplying oil to said wick, the upp'er walls of said tubes having a series of ports therein, said inner. tube having an air intake, a lvalve arranged to close the ports in said inner tube and open with the suction stroke and permitting currents of air to be established through said ports to said wick.

3. A carbureter comprising inner and outer wick tubes, a wick disposed between the same, means for delivering oil thereto, the upper walls of said wick tubes having a series of ports, said inner tube having an air intake and a flaring upper end and a cone shaped valve fitting the flared end of said inner tube and normally closing the ports therein, said valve opening by suction and permitting currents of air to pass through said ports to said wick.

4. A carbureter comprising innerand outer wick tubes, said inner tube having an air intake, a seriesl of metal covered wicks disposed between said tubes, means for supplying oil to said wicks, the upper walls of said tubes having ports therein, and the upper portion of said inner. tubeI being flared, a cone shaped valve normally closing the ports of said inner tube and fitting said fiaringsurfaee, said valve opening on the suction stroke and permitting the passage of air through said ports to said wicks.

5. A carbureter comprising inner and outer wick tubes and wicks inclosed thereby, said inner tube having an air intake,'

means for supplying' oil to said wicks, the upper walls of said inner wick tube being flared and said tubes having air ports, the ports in said inner wick tube being located in its fiared portion, a cone shaped valve fitting the flared surface of said tube, a ver-k tically arranged rod whereon said valve is slidable, a spring coiled on said rod, means for regulating the tension of said spring, said valve opening on the suction stroke and exposing the ports in said inner tube and permitting currents of air to flow4 therethrough to wicks.

6. A carbureter comprising a casing, an elbow having an air intake opening fitting one end of said casing, a second'elbow fitting the opposite end of said casing and having an opening leading to the cylinder,

a rod having its ends 4mounted in said casing, whereby rotary adjustment of said elbows around said casing is permitted. c

Aelbows concentrically with respect to said 30 communicating with said wick, va .Valve havingports leading to said wick, said cas-- ing having air intake ports, a conical valve fitting lsaid seat and normally closing the ports therein, means forvsupplying oil to said wick, said valve being adapted to open on the suction stroke, the currents of air owing past the ports in said valve seat mingling with the oil saturated currents through said ports, whereby a thorough mixture will be obtained.

8. A carbureter comprising a casing and a series of wicks therein having fibrous cores and metallic coverings, means for supplying oil to said wicks, a valve seat having ports therein leading to'said wicks, said casing having ports opposite the ports in said valve seat, a valve arranged to normally close the ports in said valve seat, said valve opening with the suction stroke, said casing having an air intake opening leading to said seat, the air flowing past the ports in said seat mingling with the saturated currents 2 therefrom, whereby a complete mixture will be obtained. v

9. The combination, with a casing, hav- -ing an air chamber and a regulating valve, Said casing having airports leading to said chamber, of a wick provided within said casing and means for supplying oil to said wick, a valve seat having ports therein adapted to iit said seat and close theports therein and openon the suction stroke, said casing having an air intake opening at one end leading to said valve, and the currents of air owing through said valvepast the ports in said seat mingling .with the cross currents in said wick, for' the purpose specified.

10. A carbureter comprising a wick and inclosing walls therefor, a flaring seat having ports leading to said wick, a cone shaped valve adapted to it said seat and having a head and ports in its side walls above and below said head, the side walls below said head having ports-leading to a chamber formed therein, said'valve opening on the suction stroke and the air drawn past said valve iiowing into and through said chamber and through the'ports in the walls above said head and meeting at an angle to one another, and the outer walls inclosing said wick having ports opposite those in the inner` wall, the saturated currents vof air fiowing through said inner po s and mingling with those passing said valve.

11. ln a carbureter, a wick, a source of oil supply connected therewith, walls having a valve seat and ports therein between which walls said wick is inserted, said wick operating to feed the oil by capillary attraction to said ports, and a valve normally closing said ports and adapted to open on the suction stroke of the engine.

1,14.oooo A 12. A carbureter comprising an air intake pipe having ports in its walls,a valve adapted'to close said ports and open with the suction stroke of the engine, and a wick communicating with a source of oil supply and adapted to feed the oil by capillary attraction to said ports.

13. A carbureter comprising an air intake pipe having ports in its walls and a valve normally closing said ports and adapted to open with the suction stroke, 'a Wick communicating witha source of oil supply and adapted to feed `it'by capillary attraction to said ports, and a mixing chamber communicating with said ports when said valve is opened.

14. A carbureter comprising a casing, a wick therein communicating with a source of oil supply, a valve having a tapered seat and ports therein through which currents of air are directed across said wick, a cone shaped valve adapted to close the ports in said seat and shut off the air currents, said valve being composed of comparatively light material and adapted to open on the suction stroke of the engine, for the purpose specified.

15. A carbureter comprising a casing, a wick therein c'ommunicating with a source of oil supply, said casing having an air intake opening inclosed by saidwick, and air ports through which currents of air are established across said wick, a valve arranged to close said air intake -passage and ports, the currents of air in said passa-ge and ports mixing near said valve'when it is open and said valve being composed of comparatively light material and adapted to open on the suction stroke.

16. A carbureter comprising a casing having an air intake opening and a tapered valve seat inclosing said opening, a cone shaped valve of comparatively light material, such as cork, adapted to fit said seat and slidably mounted and yieldingly held toward said seat and adapted to open on the suction stroke, said tapered seat having ports therein and means for delivering .oil to said ports.

17. A carbureter comprising a casing having air intake ports, a wick within said casing communicating With a source of oil supply, said casing having a valve seat *through which said ports extend, said casing having a central air intake inclosed by said seat and a. chamber above said seat, a sliding valve adapted to close said intake ports and said passage and open on the suction stroke, the currents of air, passing through said ports and central intake passage mingling between said valve seat and valve substantially as described.

18. A carbureter comprising a series of wicks communicating with a source of oil supply, an air intake inclosed by said wicks and having ports in its Walls, a valve normally closing said ports, said Wicks operating to deliver the oil by capillary attraction to said ports, said valve being composed of comparatively light material and adapted to open with the suction stroke of the engine.

l!). carbureter .comprising a series of Wicks arranged in a` circular form and a source of oil supply connected therewith, an air intake inclosed by said Wicks, a valve also inclosed by said wicks for controlling the flow of air through said intake, and ineans for delivering the hydro-carbon brought up by said Wicks into the path of the air currents.

20. A carbureter comprising a Wick and a source'o't oil supply connected therewith, a closely coiled Wire covering for said Wick,

a' valve seat inclosed byvsaid Wick and hav`v ing perfor-ations therein and through which perforatlons currents of air are directed to said Wick, and a valve adapted t0 open on the suction stroke of the engine for normally closing said perfor-ations.

2l. A earbureter 4comprising a Wick and a source of oil supply connected therewitha tapered valve seat inclosed by said Wick and having a series of perforations through which currents of air are directedl to said wick, and a tapered valve adaptedto normally 'close said perforations and composed of comparatively light material, said valve opening on the suction stroke of the engine. 22. A carburetor comprising a wick carrier, Wicks having metallic surfaces mounted in said carrier,'a reservoir having .a paissage communicating with the lower portion of said Wicks for delivering'fuel oil-thereto, said carrier having ports infits Walls leading to and from said wicks, and ak valve for said ports.

23. In a carbureter, a Wiel: having a' inetallic surface and a carrier provided With a socket into which said wick is inserted, one end of said wick communicating With a source of oil supply, said carrier having ports leading to and from said wick, for the purpose specified.

, In Witness whereof, I have hereunto ser my hand this 6th day of October 1909.

` WILLIAM J. RUBESKY. Witnesses: i

RICHARD PAUL, J. A. BYINGTON.

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