US1038040A

US1038040A - Carbureter.

Info

Publication number: US1038040A
Application number: US67337712A
Authority: US
Inventors: Arthur J Weiss
Original assignee: MAXI Co
Current assignee: MAXI Co
Priority date: 1912-01-25
Filing date: 1912-01-25
Publication date: 1912-09-10
Anticipated expiration: 1929-09-10
Also published as: GB191224677A; FR450130A

Description

A. J. WEISS.

CARBURETER.

APPLICATION FILED 12.11.25, 1912.

1,038,040. Patented Sept. 10, 1912.

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OARBURETERf APPLICATION FILED JAN. 25, 1912.

1,038,040, Patented Sept. 10,1912.

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A. J. WEISS. GARBURETER. APPLICATION FILED JAN-25, 1912.

. Patented Sept. 1( 1912.

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ARTH UB J. WEISS, OI WEST ORANGE, NEW JERSEY, ASSIGNOR, BY MESNE,A SBIGN- MEN'IS, TO MAXI COMIANY, A CORPORATION OF NEW YQBK.

GARBURETER.

Specification of Letters ratent.

Implication filed January 25, 1912. serial No. 878,377.

To all whom it may concern:

Be it known that I, ARTHUR J. Wmss, a' citizen of the United States, residing at West Orange, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Carburetors, of which the followingis a full and complete disclosure. 1

The object of my invention is to provide an improved carburetor for use in connection used on motor vehicles, which shall be more ositive and efficient in operation, particuliirly when the engine is bein started or is chan in its spec in accor ance with the spec '0 the vehicle or other device being driven by the en ine. I

The special ObJGCt of my invention is to provide a carburetor that will obviate the necessity of priming the engine preparatory to starting and at the same time, Wlll not cause a flooding of the carburetor or a waste or overflow of gasolene or similar fuel.

It is also a further object of my invention to permit a rapid and uninterrupted supply of the fuel when the engine is running at its maximum speed, which supply is at all times under complete control in connection with the throttle valve so that theright mixture of fuel and air may be obtained, while at the same time the proportions of the mixture of fuel and air may be varied to suit diii'crent conditions.

For adetailed description of one form of my invention, which I at the present time, consider preferable, reference may be had to the following specification an to the accompanyin drawings, forming a part thereof of w ich- Fi ure 1 is a side elevation, showing the need e valve and" cam chamber casing in vertical. sect-ion substantially "on the line II Fig. '2. Fig. 2 is a plan view showing aportion of the casing and needlcfvalve in cross-section substantially-on the line II- II Fig; 1. Fig. 3 is a vertical sectional view taken substantially on the line III Fi 2. Fi 4 is a vertical sectional view t rough t e mixing chamber taken substantially on the .line IV-IV ,Fig. 1. Figs. 5 and 6 are of the nature div grammatic views through the mixing chamclosed, may be regulated ber of the carburetor, similar to Fig. 3-but.

showing the relations of the air and fuel under iii'erent conditions of operation.

Referring to the drawings: the numeral (1) indicates the casing o the carburetor proper or the mixing chamber and the numeral (2) indicates the casing of the float valve for maintaining an even supply of fuel.

The numeral (3) indicates the pipe wh1ch is connected with the main fuel storage. tank and its out-let is preferably supiplied'with a screen (4) for straining the sal fuel. The fuel passage (5) o ens into the float valve chamber (6) .an is controlled by the valve (7) operated by the float The versely through into t continued upward in a vertical direction as indicated at (12). At the angle between the passa es valve (13 a apted to regulate the amount of fuel desired during the initial action of the carbureter. The passa e (12) terminates within the mixing cham er 11) in the form of a nozzle (14),.which nozzle is provided at a oint slightly removed from its extreme on with diverging openings (15), the pur ose of which will be hereafter more particu arly pointed out. a

The numeral (16) indicates the throttle valve substantially in the well-known.butterfly form and at one side provided with a slot or recess (17), through -which the nozzle (1t) is adapted to extend as indicated in Fig. 3 and which may be more or less closed. by an adjustable screw-threaded in (18) passing through the casing (1).

his screw-threaded pin (18) is adapted to be held in different angular positions by means of a sprin -pressed pawl (19). It .will be seen that t is pin (18) ma be more 0 partition or web" (10) or less withdrawn or mserted in t e mixing chamber ('11) thereby more or less filling the recess (1.7) so; that the passage of air past the throttle valve.

; it will be seen that Referring to Fi -1 $6) communicates with a the float chamber passage 20') which is connected with the .needle va vs (21) passing through a hush-.

passage 9 extends trans- I t ((9) and (12) is placeda needle when the same is e mixing chamber (11) and then is knurled head (26).

ing (22). The stem of the needle valve (21) extends upward through a tube or bushing (23) and is screw-threaded therein as indicated at (24). Above the screw-thread portion (24) is a cylindrical portion provided with longitudinal grooves (25) and a The grooves (25) co operate with the spring-pressed pawl (27) to hold the val ve spindle (21) in diiferent angular positions. The bushing (23) carries a fixed collar 28) and is surrounded by a helical spring (29), one end of which rests against the said collar. The upper end ofsaid spring (29) .rests against a. por tion of the casing (30) which surrounds the operating parts of the needle valve. The central pivoted rocking lever (31), provided at one end with a fork (32) which contacts with the collar (28) on the bushing (23), serves to adjust the position of the needle valve. Thc opposite end of this rocking lever (31) contacts with a cam (33) fixed to the shaft (34) of the butterfly? valve (16). The shaft (34) extends through the casing (1) and at its upper end is provided with an operating lever (35). It will now be seen that as the throttle valve (16) is more or less opened by the lever (35) the cam (33) will operate the rocking lever (31) to-open the needle valve (21) to.a corresponding extent, this action being independent of the supply of the fuel to the nozzle (14) except as the latter is affected by the suction of the engine. The web or partition (10) in the mixing chamber (11') is provided with a second horizontal passage (36) which communicates through the passage (37 with the opening upon the needle valve (21). The passage (36) has a series of small conduits (38) branching therefrom, which extend vertically and open into the mixing chamber on the upper side of the web or partition (10) as fully shown in Figs. 3 and 4. The passage (36) also communicates with a passage (39) extending vertically from the passage (36) and this passage (39) communicates with two similar passages or conduits (40) and (41) which also enter the mixing chamber at its side, slightly below the level of the throttle valve (16) when it is in its closed position. duits (38), (40) and (41) will now be described in connection with the operation of the carbureter.

Referring first to Fig. 3; it will be seen that the position of the parts is such as they would assume when the engine is first being cranked or started. At this time a suction or partial vacuum is created in'tho manifold and the mixing chamber (11) by the movement of the pistons of the engine This causes the fuel in the passage (12) to be ejected through the nozzle (14) and since the holes (15),,at the lower part, of said The object of these small con-Q qllllently the maximum nozzle, enter the mixing chamber below the closed throttle valve (16) where there is no appreciable vacuum, air will also be sucked through said holes (15) and be ejected together with the gasolene into the mixing chamber 11) above the throttle valve, thus a very rich mixture of air and gasolene is immediately supplied to give the initial or starting mixture to the engine. In this Fig. 3 the arrows are intended to indicate the air, while thedots and dashes indicate the fuel and this designation is also employed in Figs. 5 and 6. It should be noted that at this time the outlets of all the conduits (38), (40), and (41) are below the throttle valve and subject to no suction, no fuel therefore being drawn therethrough. Assuming that it is now desired to increase the supply of the mixture for starting the autombbile; the throttle valve (16) is of course turned accondingly until at one point in its movement,-it reaches the position shown in Fig. 5. In this position the nozzle (14) acts as before in connection with the passages (15) and discharges above the throttle valve (16) where it is as before, subject to a partial vacuum in the mixing chamber (11). This also draws the fuel through said passage (40) and since the conduits (38) still open below the throttle valve, air. will also be drawn into the passages (39) and (40) forming a rich mixture therein, which will immediately be discharged into the mixing chamber (11), thus nozzle (14). As the motion of the throttle valve is continued, air is admitted to a greater and greater extent, while at the same time the right band edge of the throttle valve (16) passes successively the outlets of the conduits (41) and (38) thus the suction in the mixing chamber is made effective upon an increasing cross-sec tional area of the fuel supply passages and atthe same time the ainsupplied through said passages 1s dimm- -ished in quantity, the increased supply ofair however, being obtained by a greater opening of the throttle valve. When the throttle valve is in the position lndicated in Fig. 6, it will be seen that fuel is being .supphed through all of the passages and since the suction is also operative u on the small radial passages (15), fuel is a so supplied through these. This indicates the point of maximum fuel supply and consespeed and power of e engine. However, the fuel is at the same time regulated for intermediate degrees of speed by means of the cam (33) controlling the needle valve (21).

From the above it will be seen that I have provided a carbureter which contains two mechanically independent fuel supply systems; one which operates when the engine masons ,is being started and when running slowly,

while the other operates in addition there to while the throttle valve is being opened and controls the supply in two ways up to the maximum speed; these two ways being the bringing into action of successive elements of the fuel outlets and the control of the needle valve.

Having thus described this form. of my invention, what I claim and desire to protect by Letters Patent is: Y

1. A carburetor having a mixing chamber, a throttle valve, and a plurality of fuel outlet passages entering said chamber and 'arranged to supply a mixture of fuel and air and thenliquid fuel progressively as said throttle valve is opened.

2. A. carburetor having a mixing chamber, a throttle valve, and a fuel passage having a plurality of branching outlets enterin said chamber at separate points below sai throttle valve, said outlets being successively caused by the throttle valve as it is. opened, first to take air and finally to eject liquid fuel,

3. A carburetor having a mixing chamber, a throttle valve, and a fuel passage having a plurality of branching outlets entering said chamber at separate oints below sai throttle valve said outlets eingsuccessivel caused by said throttle valve as it is opene to take air, eject mixed air and fuel an finally eject liquid fuel. v

4t. A carburetor having a mixing chamber and a fuel passage havingaplurality o branching outlets entering said chamber,

said outlets being arranged to act initially as air inlet openings and thereafter as liquid fuel outlet openings, and means for controlling the intake of air and the exit of liquid fuel through said outlets.

5. A carbureter having a mixing chamber, and a fuel supply passage havmg a plurality of branching outlets entering said chamber, said outlets being arranged to act initially as air inlet openings and thereafter as liquid fuel outlet 0 enings, and a valve for controlling the inta e of air and the exit of liquid fuel through said outlets,

6. A carburetor having a mixing chamber, and a fuel supply passage comprising a plurality of branching outlets, and a throttle valve located adjacent said outlets, the angular osition of which throttle valve controls t e initial flow of air and subsequently liquid fuel through said outlets; r

'l. A carburetor having a mixing chamber,

and a fuel passage comprising a plurality of branching outlets, and a throttle valve located adjacent said .outlets, the action of which throttle valve causes air to enter initiall some of said outlets and to mix with t e fuel issuing from others of said outlets and finally a supply of liquid fuel in different positions of said valve.

8. A carburetor having a mixing chamber and a fuel supply passage having a plurality of outlets, a throttle valve, a plurality of said outlets being located adjacent the.

path of movement of said valve so as to suppl air'and fuel on the outlet side and to su tract. air from the inlet side as the valve is operated.

9. A carbureter having a mixing chamber and two sets'of fuel passages entering the same, and-a throttle valve, one of said sets of passages having its outlets located so as to operate above said throttle valve when the same is in closed position, and the other set being located so as to be rendered progressively operative to supply air and fuel as the throttle valve is opened.

.10. A carbureter having a mixing chamber and two sets of fuel passages enterin the same, and a throttle valve, one of sai sets of passages having its outlets located so as to operate above said throttle valve when the same'is in closed position, and the other set being located so as to be'rendered inoperative by the throttle valve to supply fuel when in closed position but effective to supply air and whose effective cross-section to en ply fuel is progressivelyincreased as the t rottle valve is opened;

11. A carburetor having a mixing chamber and two sets of fuel supply passages enterin the same, and a throttle valve, one of said sets of passages having its outlets located soas to operate above said throttle valve when the same is in closed position and the other set having its outlets located so as to be made progressively operative by the throttle valve to successivel supply air and fuel as said valve is opened 12. Acarbureter having a mixing chamber and two sets of fuel passages enterin the same,,anda throttle valve, one of sai sets of passages bein so located as to be operative above said t rottle valve when the same is in closed ositionfboth of said sets having outlets coated so as to be made progressively operative by the throttle valve to supply ELIE" and fuel as said valve is opened.

.13. A carburetor comprising a throttle valve having an opening therein, a liquid fuel supply, two passages leading therefrom, one of which terminate in a nozzle which passes through said opening to the engine nozzle which asses throu h said opening to" the engine si e of said va ve when the same is in its closed position, and means for moving said disk to-a position above said nozzle.

15. A carburetor having a mixing chamllllll her, a central transverse Web therein, having two horizontal fuel passages therethrough, an outlet passage communicating with one of said horizontal passages, a nozzle connected with said outlet passage, the other horizontal passage communicating with a plurality of outlet passages branching therefrom.

16. A carburetor having a mixing chamher, a central transverse web therein having two horizontal passages therethrough, an outlet passage communicating with one of said horizontal passages, a nozzle connected with said outlet passage, and a throttle valve beyond which said nozzle extends when the valve is closed the other horizontal passage communicating with a plurality of outlet passages branching therefrom and Whose ends are located adjacent the path of movement of said valve.

17. A carbureter having a mixin chamher, a disk throttle valve pivote transversely therein, a central transverse Web in said chamber and having a plurality of branching passages therethrough, the outlets of said passages bein located below said valve when it is close and made successively operative by the edge of said valve as it is opened.

Signed this23rd day of January, 1912.

ARTHUR J. WEISS.