USRE14790E - Carbureter - Google Patents

Description

F. 0. BALL.

CAHBURETER.

YAPFLICATIQN FILED MAY 26.1929.

Reissued J an. 13, 1920.

.3 M inflamdw oz UNITED STATES PATENT oFFIoE.

FREDERICK 0. BALL, 0F DETROIT, MICHIGALL ASSIGNOR, BY DIRECT AND MESNE I ASSIGNMENTS, TO BALL & BALL CARBURETOR COMPANY, OF DETROIT, MICHI- GAIN, A CORPORATION OF MICHIGAN.

C ARBURETER.

Specification of Reissued Letters Patent. Reigsued'Jan, 13, 1920. Original N0. 1 ,243,480, dated October 16, 1917, Serial No. 117,607, filed August 30, 1916.

Application for reissue filed May 26, 1919. Serial No. 299,965.

To all whom it may concern:

Be it known that I, FREDERICK 0. BALL, a citizen of the United States, and a resident of Detroit, in the county of \Vayne and State of l\l: ichigan, have invented certain new and useful Improvements in Carburetors, of which the following is a specification.

The invention relates to carburetors and consists in certain improvements in the con struction thereof as will be hereinafter fully described and ointed out in the claims.

It is desirablia. to momentarily supplement v the normal fuel supplied to the earbureter as the throttle is opened. Such devices are usually termed pick up devices and this invent'xgn has particular reference to this fea ture. v

The invention is illustrated in the accomvpanying drawing wherein a vertical section of a carburetor is shown.

1 marks the float chamber, 2 the float, 3 the inlet valve; 4 the inlet connection, 5 the mechanism for, communicating the movem'ent of the float to the valve, 6 the cover and Tthe clip for holding the cover in place.

. The float chamber has a projection 8 extending under the body of the carburetor and is secured to the'body of the carburetor by a screw 9'which extends through the eX- tension 8 and forms a closure for the chamber 10. The screw has areduced portion forming a passage 11 which communicates with the assage 12. A passage 13 extends into the body of the carburetor from the passage and communicates with. a passage 14 leading to the nozzle 15. The nozzle is arranged inthe Venturi tube 16 formin an initial air opening of the earbl'ireter. he Venturi tube opens into the mixing chamber-17. An auxiliary air opening 18 is provided. This is controlled by a yieldingvalve 19 operating on the seat 20. The valve is 'ilided by a pin 21 extending from a cap 22-.

spring 23 yieldingly. holds the valve to its seat. A throttle valve 2-1 is arranged on the stem 25.

A choke valve 28' is mounted on the stem 29 and controls the air-inlet in the usual manner.

The screw 9 has a radial opening 9* which oommlmieates with the passage 11 leading to the axial passage 9". The passage 9" extends upwardly into a cylindrical extension 30 extending upwardly fromthe screw 9. This is connected by the radial openings 31 with screw 34; on the upper end of the extension 30. A spring is arranged around the stem and operatesagainst the hack of. a valve 36, the valve 36 controlling the passage The spring, therefore, when released opens the valve The stem 33 en-' gages a shoulder 38 carried by a plunger 39. he plunger 39 operates in a cylinder 40. The cylinder 40 is connected by a. passage 41 with the mixing chamber above the throttle 24. A spring 4-2 opcratesagainst the shoul der 38 and is of suflicient strength to overcome the spring 35 and close the valve32 when the parts are not influenced by the piston or cylinder 39. The passage 34 commixing chan'iber. A passage 44 leads from the upper end of the chamber 10 to the outer air. The operation of the device is as follows: When the throttle is closed and the engine running the pressure above the throttie is very much roduced and this being communicated throiigh the passage 41 to the cylinder 40 subjects the upper 'face' of the piston 39 to a much smaller pressure than that below the piston. In consequence the piston 39 is drawn upwardly compressing the spring 42 and permitting .the spring 35 to close the valve 36 and open the valve 32.

With the parts in this position, the fuel flows from 'thefloat chamber through the passages 9 and 0 to the chamber 10 and 'fills to the level of the fuel in the float chamber as indicated at A. WVhQn the throttle is open, the diflerence. in pressure above and below the throttle very slight and consequently the pressures above and below the piston 39 are slight. Under these conditions the spring 42 is of sufiicient strength to force the shoulder 38 downwardly and with it the stem 33, thus closing the valve and opening the valve 36. l lnder tl'xcse conditions the fuel which isaccumulatcd in the chamber is swept through the extension 30 by way of the passages 31 through the passages 34 and 43 to the mixing chamber. As soon as the receptacle is emptied no further supply can reach the fuel chamber until the throttle is again closed so that after the discharge of the pre-determined quantity which the receptacle will take up the normal funethe throttle the piston 39 will be lifted.

What I claim as new is: I I 1. In a carbureter, the combination of a I mixing chamber; means for supplying air 'and the normal fuel to said chamber; a

throttle valve; devices for augmenting the normal fuel supply after the throttle is opened comprising .a receptacle having a supply passage leading from a fuel supply and a dlscharge passa e leading to the mixing chamber; valves .or said passages; and means sensitive to variations of pressure at v the discharge side of the throttle acting when the throttle is actuated for actuating said valves alternately to close the supply passage and open the discharge passa e when the throttle is opened and to close the discharge'passa e and open the supply passage when the rottle is closed.

2. In a carburetor, the combination of a mixing chamber; means for supplying air and the normal fuel to said chamber; a throttle valve; devices for augmenting the normal fuel supply after the throttle is opened'comprislng a receptacle-having a supply passage leading from a fuel supply and a discharge passage leading to the mixing chamber; valves for said passages; and a motor having one side subjected to pressure at the discharge sideof the throttle and actin when-the throttle is actuated to actuate said valves alternately to close the sage when the throttle is opened and to close the discharge passage and open the supply passage when the throttle is closed.

3. In a carbureter, the combination of a mixing chamber; means for supplying air throttle valve; devices for. augmenting the' normal fuel supply after the throttle is opened comprising a receptacle having a supply passage leading from a fuel supply and a discharge passage leading to the mixing chamber; valves for said passages; a motor comprising a cylinder having a connection with the mixing chamber at both sides of the throttle a piston in the cylinder; and a connection between said motor and said valves whereby when the throttle is actuated the valves are actuated alternately to close the supply passage and open the discharge passage when the. throttle is opened and to close the discharge passage tioning of the carbureter is. not interferedsupply passage and open the discharge pas-' and the normal fuel to said chamber; a

and open the supply passage When the throttle is closed.

4. In a carbureter, the combination of a mixing chamber; means for supplying air and the normal fuel to said chamber; a throttle valve; devices for augmenting the normal fuel supply after the throttle is opened comprising a receptacle having a supply'passage leading from a fuel supply and a discharge passage leading to the mixing chamber; double valves having opposing sides, one controlling the supply passage and the other the discharge passage; a spring tending to close the valve controlling the discharge passage; a spring tending to close the supply passage and operating against said first spring; a motor comprising a cylinder subjected to pressures at the opposite sides of the throttle; a piston in said cylinder operating against .said valves in connection with said springs to open the valve controlling the dischargeand close the valve controlling the supply pas-' sage when the throttle is open and to open the valve controlling the supply passage and close the valve controlling the discharge when the throttle is closed.

5. In a carburetor, the combination of a suction passage; means for delivering air and fuel to said passage; an auxiliary passage to which air is delivered leading to the suction passage; a throttle'valve in the suction passage; a valve mechanism controlling the flow of air through the-auxiliary passage, said valve mechanism. being adapted to cut off the flow of air through the auxiliary passage; and devices actuated 'by fluctuations in the degree of vacuum at the discharge 'side of the throttle controlling said valve mechanism and enriching the mixture with a decrease in said vacuum.

6. In a carbureter, the combination of a suction passage; means for delivering air and fuel to said passage;'an auxiliary passage to which fuel is delivered leadingto the suction passage; a throttle valve in the' suction passage; a valve mechanism controlling the flow of fuel and air through the auxiliary passage,.said valve mechanism be-,

ing adapted to cut off the flow of airthrough the auxiliary passage;- and devices actuated by fluctuations in the degree of vacuum at the discharge side of the throttle controlling said valve mechanism and enriching the 120 mixture with a decrease in said vacuum.

7. In a carbureter, the combination of a.

sage to which fuel and air are delivered leading to the suction passage; a throttle -valve in the suctionpassage; a. valve mechanism controlling the flow of air throu h the suction passage; means for delivermg air and fuel to said passage; an auxiliary pasgree of vacuum at the'discharge side of the throttle controlling said valve mechanism and enriching the mixture with'a decrease in said vacuum.

In a carbureter, the combination of a suction passage; rniea'ns for delivering air and fuel to said passage; an auxiliary pasvalve mechanls sage-leading to the suction sage leading to the suction passage for augmenting the fuel supply to said suction passage comprising a well to which air and fuel are delivered; avalve mechanism between the well and the discharge of the auxiliary passage controlling the flow of fuel from said well; and devices actuated by fluctuations in the degree of vacuum at the discharge side of the throttle controlling said thecombination'of a means for delivering air passage; an auxiliary paspassage for augto said suction pasito which air and 9; In a carbiireter, suction passage; and fuel to said menting the fuel suppl sage comprising a we] fuel are delivered; a valve mechanism be- ,tvveen the Well and the discharge of the auxiliary passage controlling the flow of air from said well; and fluctuations in the degree of vacuum at the discharge side of the throttle controlling said valve mechanism.

10. In a carbureter, the combination of a suction passage; means for delivering air and fuel to said passage; an auxiliary passage leading to the suction passage for augmenting the fuel supply to said suction assage comprising a Well to which air and fuel are delivered; a valve tween the iliary passage controlling the flowof air and fuel from said well; and devices actuated 'by fluctuations in the degree of vacuum at the discharge side of the throttle controlling said valve mechanism.

In testimo y whereof I have hereunto set my hand.

FREDERICK 0 BALL.

devices actuated by mechanism bewell and the discharge of the aux

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