US1243479A - Carbureter. - Google Patents

Description

vF. O. BALL.

CARBURETER.

APPLICATION FILED AUG.30. I9I6.

L Patented OCI. I6, 1917.

@Mom m UNITED STATES PATENT oEEioE.

FREDERICK 0. BALL, OF DETROIT, MICHIGAN, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO BALL & BALL CARBURETOR COMPANY, 0F DETROIT, MICHI- -GAN, A. COBPORATION'OE MICHIGAN.

CARBURETER.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed August 30, 1916. Serial No. 117,606.

T 0 all whom t may concern:

Be it known that I, FREDERICK O. BALL, a citizen of the United States, residing at Detroit, in the county ot' Vayne and State of Michigan, have invented new and useful Improvements in Carbureters, of which the following is a specification.

This invention relates to carbureters and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

It is desirable to momentarily supplement the normal fuel supplied to the carbureter as the throttle is opened. Such devices are usually termed pick-up devices and this invention has particular reference to this feature. The drawings show a vertical central section through the carbureter, small portions being shown in elevation to better show construction.

1 marks the float chamber, 2 the float, 3 the inlet valve, L1 the inlet connection, 5 the mechanism f or communicating the movement of the float to the valve, G the cover .and 7 the clip for holding the cover in place.

The float chamber has a projection S extending under the body of the carbureter and is secured to the body of the carbureter by a screw 9 which extends lthrough the extension 8 and forms a closure for a chamber 10. The screw has a reduced portion forming a. passage 11 which communicates with the passage 12. A passage 13 extends into: the body of the carbureter from the passage 11 and communicates with a passage let leading t-o the nozzle 15. The nozzle is arranged in the Venturi tube 16 torming an initial air opening of the carbureter. The Venturi tube opens into the mixing chamber 17. An auxiliary air opening 18 is provided. This is controlled by a yielding valve 19 operating on the seat 20. The valve is guided by a pin 21 extending from a cap 22. A spring 23 yieldingly holds the valve to its seat. A throttle valve 24 is arranged on the stem 25. It is operated through a lever-'26, the lever 26 having the usual eye to which the throttle controlling device may be attached. A choke valve 28 is also provided at the air inlet 29. This 1s mounted on the stem 30, the stem being controlled by a lever 31. So far as described this may be any desirable form of carbureter.

Radial passages 38 are arranged in the screw 9 and communicate with an axial passage-32 leading to the chamber 10. An upwardly extending cup or passage 34 is arranged at the upper end of the" screw and this has radial openings 35 communicating with the chamber 10. A needle valve 3G is adapted to close the 'passage It is carried by a stem 3T which terminates at its upper end -in a collar or shoulder 38. bell crank lever 239 is pivotally mounted on the carbureter by means ot' a pin 3W. ,One arm 10 is adapted to engage the shoulder 38 as the lever is swung. The opposite arm 41 has a roller d2 arranged in the path ot a cam 43 on the lever 2G. A spring 4;-1 tends to hold the arm 40 ot' the lever'ii) in its upper position as shown. then the throttle is opened the cam 43 voperating against the roller 4,2 swings the arm 41 toward the left depressing the arm l0. The spring 3G then closes the valve 36. cylindrical projection 45 extends over the projection IH and is carried by a plug 4.3 extending upwardlv through the upper walls of the chamber. Thel plug 45d has an axial passage lo. Radial passages #t7 extend from the passage 46 into an annular passage 48 termed by a groove in the. plug. The passage '-18 communicates with a passage 49 in the body ot the carbureter leading to the mixing chamber adjacent tothe Venturi tube.

A valye 50 controls the passage 16. This valve liasla sleeve-shaped stem 51 which ex tends upwardly through the plug 45 and is arranged around thestem 37. The stem 51 terminates in a collar 52. The spring 36 is arranged against. the valve 50 so that when tho stem is released the valve 50 is closed. lVhen the throttle is opened and the arm -LO depressed it engages the collar 52 and opens the valve 50. A passage the valve 36 is first closed and then the valve opened through the movement of the arm 40 and this through the action of the cam 43. Vit-h the valves in this position, that is, the valve 36 closed and the valve 50 open the suction incident to the reduced pressure in Ythe mixing chamber draws the fuel from the fuel chamber through the cylinder #15, passage 46 and intermediate passages to the passage 49 discharging into the mixing chamber a. pre-determined amount contained in the chamber. As soon as this amount is discharged there can be no further filling of the fuel chamber nor discharge of fuel` from this source until the throttle is again closed. Vhen this happens the valve 50 is closed and the valve 36 opened permitting the receptacle 10 to again lill.

In this Way a pre-determined amount of fuel is discharged to the mixing chamber when the throttle is opened and after this pre-determined charge is delivered there is no interference With the normal functioning of the carbureter.

What I claim as new is 1. 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 avreceptacle having a supply passage leading from a fuel supply and a discharge passage leading to the mixing chamber; valves for said passages; and

n means acting when the throttle is actuated for actuating said valves alternately to close the supply passage and open the discharge passage when the throttle is opened and to close the discharge passage and open the supply passage when the throttle is closed.

2. 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;

a discharge passage leading to the mixing.

chamber and a passage leading to the air; valves for said passages; and means acting when the throttle is actuated for actuating a discharge passage leading to the mixing chamber; valves for said passages; and means having a mechanical connection with the throttle actuating when the throttle is actuated said valves alternately to close the supply passage and open the discharge passage when the throttle is opened and to close the discharge passage and open the supply passage when the throttle is closed.

41. 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; valves fory said passages, said valves having independent stems; and mechanism mechanically actuated from the throttle valve operating on said stems to actuate said valves alternately to close the supply passage and open the discharge passage when the throttle is opened and to close the discharge passage and open the supply passage When the throttle is closed.

5. 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 sup,- ply passage leading from a fuel supply and a discharge passage leading to the mixing chamber; valves for said passages, said valves being arranged concentrically, the valv'e controlling the supply passage having a stem and the valve controlling the discharge passage having a sleeve-shaped stem arranged around the stem of the valve controlling the supply passage; shoulders on said stems; and alever operating between stidshoulders and actuated with lthe thrott e.

.(3.a 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 Aleading from a fuel supply and a discharge passage leading to the mixing eha'lnher; valves for saitl passages. Saul valves living arranged roneentril-ally. the valve controlling the suppl)v passage having a stein and the valve controlling the lisharre passage having' a sleeve-shaped stem arranged around the stein of the valve eontrolling the supply passage; shoulders on said stems; a lever operating between said shoulders and actuated with the throttle; and a spring arranged between the valves on the stem of the valve controllingthe supply passage.

In testimony whereotI I have hereunto set nrv hand.

FREDERICK O. BALL.

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