US1947129A - Carburetor device - Google Patents

Description

Feb. 13, A HYMA CARBURETOR DEVICE Filed July 16, 1932 abkoz H4434 Patented Feb. 13, i934 UNITED STATES} PATENT OFFICE fourth to George Yonkman, one-fourth to Charles F. Fordham, and one-fourth to Herbert F. Johnson, all of Grand Rapids, Mich.

Application July 16, 1932. Serial No. 622,847

1 Claim.

The present invention relates to carburetors for internal-combustion engines; and its object is, generally, to provide an improved device of that character; and more particularly, to provide an improved carburetor device including a tank for the liquid fuel through which fuel air is passed and the resulting fumes are drawn by the suction of the engine into mixture with a Valvecontrolled air stream supplied to the usual carburetor of such engine, the aforesaid mixture going to the engine being valve-controlled; and further, to provide such a device in combination with liquid fuel supplied to the engine in the usual manner; and further, to provide such a device which with the conduit for said fumes may be readily applied to and connected with the usual carburetor of an automobiles internal-combustion engine; and further, to provide improved means for passing air through the liquid fuel in the tank to provide said fumes.

These and any other objects hereinafter appearing are attained by, and the invention finds preferably embodiment in, the structure and devices particularly described in the body of this specification and illustrated by the accompanying drawing, in which:

Figure 1 is a combined and somewhat diagrammatic view of a carburetor of usual type for the internal-combustion engine of an automobile or the like, and my carburetor device applied thereto, shown partly in section;

Figure 2 is a vertical sectional view (much enlarged) of a portion of the fuel-containing tank and the air conduit therein;

Figure 3 is a horizontal sectional View of said conduit taken on line 33 of Figure 2;

Figure 4 is a horizontal sectional view thereof taken on line 4-4 of Figure 2.

In the drawing is illustrated a carburetor 1, of usual type, for the internal-combustion engine of an automobile or the like, having a pipe 2 for conveying liquid fuel 3 from the bottom of the fuel tank 4, and having also the air inlet 5 governed by a suitable choke valve 6, and also having the outlet 7 for said fuel and air as mixed in the carburetor in the usual manner, said outlet leading to the engine or its manifold (not shown) and being controlled by the accelerator valve 8.

My carburetor device, associated with the said carburetor of usual type, comprises means for passing air upwardly through the liquid fuel 3 in the tank 4 to vaporize the same and provide fumes 9 thereof in the tank and above the level of the liquid fuel therein. A tube or conduit 10 extends from the interior of this tank, and above said fuel level, into the said usual carburetor, so that these fumes are drawn through said conduit and into the mixed liquid fuel drawn through pipe 2 and the air drawn through the intake 5.

The combined mixture of liquid fuel received through pipe 2, air through intake 5, and fuel fumes through conduit 10, pass through outlet 7, which is controlled by valve 8, and into the engine or its manifold (not shown) beingdrawn thereinto by the suction of the engine.

The means for passing air through the liquid fuel in the tank desirable comprises a vertical tubular member having a cap or body 11 screwed into a hollow internally threaded member 12 on the top of the tank, said cap or body having an air passage 13 therethrough controlled by a threaded conical valve 14 having a jam nut 15. A tube 16 extends downwardly into the liquid fuel 3 and has at its lower end a collar portion 17 with an annular rib 18 and. an enlarged hollow discharge member 19 of sheet metal crimped at its upper edge around the rib 18 and having a series of circularly arranged venting orifices 20. The air entering the passage 13 is drawn down through the cap or body 11, the tube 16 and the discharge member 19 and out through the orifices 20, whence it rises or bubbles up through the liquid fuel, vaporizing the same and creating the fuel fumes 9 above its level.

My device as above described is particularly well adaptedfor use with the usual liquid hydrocarbon fuel, such as gasolene.

It will be seen that the valves 6 and 8 may be so turned as to provide the desired combination of liquid fuel, air, and said fuel fumes created by the passing of air through the liquid fuel. At times, as in starting the engine, the air inlet valve 6 may be closed or nearly closed, so that a rich combustible fuel mixture is furnished to the engine.

My carburetor device may be used with other than liquid hydrocarbon fuel, as with oil fuel contained in the tank 4 through which oil air is passed as above described to create similar fumes above the oil level which are then drawn off through the conduit 10 to the engine. In such use, the usual carburetor 1 may in some cases be dispensed with.

It will be seen that my carburetor device may be applied to internal-combustion engines having the usual carburetor 1, liquid fuel tank 4, liquid fuel pipe 2, air intake 5 and outlet 7, with the usual valves 6 and 8, and as an additional or accessory carburetor device ,by merely providing said fuel tank with the tubular member or air conduit 16, etc. described, and the said conduit 10 for the fumes 9 leading from the tank to the usual carburetor 1 below the valve 8.

The invention being intended to be pointed out in the claim, is not to be limited to or by details of construction of any particular embodiment thereof illustrated by the drawing or hereinbefore described.

I claim:

In a carburetor device of the character described for an internal-combustion engine: a liquid fuel tank; means for drawing air through the liquid fuel in said tank by the suction of the engine to create combustible fumes above the liquid level in the tank, said means including a cap threaded through the top of the tank having an air passage therethrough controlled by a threaded conical valve, a communicating air tube extending downwardly into the liquid fuel and having at its lower end an annular rib, and a hollow discharge member crimped over said rib and having a plurality of circularly arranged air vents; a conduit leading from said tank to the engine for drawing said fumes from above said liquid level in the tank to the engine by the suction of the engine.

ABE I-IYMA.

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