US2458999A

US2458999A - Primer and idler

Info

Publication number: US2458999A
Authority: US
Publication date: 1949-01-11
Anticipated expiration: 1966-01-11

Description

Jan. 11, 1949. w. R. s. MlLLS I 2,458,999

PRIMER AND IDLER Filed Nov. 9, 1945 LINEFROM 7 W.

FUELPUMP T L To MRBUR K To INrAKE MA N/FOLU Patented Jan. 11, 1949 UNITED STATES PATENT j 2,458,999 r I Q i PRIMER AND IDLER Will R. StMillS, Grystal, Okla). Application November 9, 1945, SerialNo. 627,753

1 (Claim; (01. its-46.5)

This invention relates to a primer and idler for gasoline engines, and the like, and has for one of its objects the production of a simple and eflicient means for connectionwith a downdraft carburetor to provide a reserve supply of fuel which may be conveniently fed to the carburetor in the event that the engine should fail to start.

A further object of this invention is the production of a simple and eflicient means for filling a reserve tank with fuel while the engine is operating so that this reserve supply of fuel may be used subsequently to start the engine.

Other objects and advantages of the present invention will appear throughout the following specification and claims. I

In the drawing:

Figure 1 is a side elevational view of the primer and idler;

Figure 2 is an enlarged longitudinal sectional view, certain parts being shown in elevation;

Figure 3 is a top plan view of the vented cap of the reserve tank.

By referring to the drawing, it will be seen that It! desi nates a hollow coupling one end of which is adapted to be connected to the fuel pump of a gasoline engine and the other end to a carburetor, as indicated in Figure 1. A joint II is also connected to the hollow coupling H] by means of a connecting pipe 12, which pipe l2 extends vertically relative to the coupling Ill. The joint II is provided with a longitudinal bore l3 extending from end to end and having a valve seat I4 intermediate the ends thereof for receiving the needle valve l5 to control the flow of gasoline or other fuel through the seat I4 when desired, by the adjustment of the valve [5. The bore l3 communicates with the hollow pipe l2 which pipe l2 forms a communication between the bore l3 and the hollow coupling 10, as shown in Figure 2. The bore l3 also communicates with the hollow pipe l6 which is connected to the end of the joint ll opposite the needle valve IS.

A hollow metal or other bowl I! is supported above the joint H by a hollow stand-pipe l8 forming a communication with the bore l3 and valve seat l4 with the bowl IT, The bowl I1 is provided with an upstanding threaded neck l9, upon which is threaded a vent cap 20 having a vent aperture 2|. A gasket 22 fits between the cap 20 and the upper end of the neck I9 surrounding the area of the vent 2|. The vent 2| may therefore lie opened or closed by adjusting'the cap upon the neck l9 relative to the gasket 22, such for instance, by turning the cap 20 upon the screw threads of the threaded neck I9.

The outer end of the pipe 1615 connected to a vertical joint or casing 23 having a bore or channel 24 which communicates with the bore 25 in the pipe l6; A vertically adjustable needle valve 26 controls the passage of fuel through the bore 24 by its'movement toward or away from the valve seat 21, which seat is located in the bore 24. The lower end of the bore 24 communicates with the intake manifold of the engine and also communicates with the windshield wiper through the hollow nipple 28.

The present device is adapted to be connected to the fuel line or fuel pump and to a downdraft carburetor of a gasoline engine. As the gasoline engine is started, the bowl I! fills quickly with gasoline, the valve [5 being open and the vent cap 20 also being loosened to open the vent 2|. When the bowl Il'is full of fuel, the vent cap 20 is tightened or secured to close the vent 2| and the bowl will retain the fuel at all times if the fuel line is air-tight. If the fuel line is not tight the valve I5 is adjusted to close on the seat 14 to prevent fuel from leaking from the bottom of the bowl ll. This may be done whether the engine is in operation or not to insure the retention of a full bowl of fuel.

Should the engine fail to start, for lack of obtaining sufiicient fuel through the fuel line and carburetor, the operator may simply open the valve [5, if it is closed, and unscrew the vent cap 20' to provide a proper vent for the bowl H. The supply of filtered fuel which has been stored in the bowl I! from the fuel pump, about one-half pint, will flow by gravity to the carburetor by way of the pipe 18, bore I3, pipe 12, and coupling ID. A suitable communication is provided between the intake manifold and the windshield wiper through the coupling or casing 23 and pipe 16 from the joint II.

If the priming pump of the engine is not operating, the valve 26 may be opened to prime the intake manifold and may be kept open to permit the engine to idle while cold and until the engine warms up, when the valve may be closed to permit normal operation.

From the foregoing description it will be seen that a simple and efficient means has been provided for priming and facilitating the starting of a gasoline engine, should the engine fail to start due to the fact that the engine is cold or because of the lack of fuel being fed through the carburetor and intake manifold, It should be understood that the present device will prime the fuel-line and the carburetor, it being necessary to open the vent cap 20 and valve 15. The priming is A device of the class described comprising a reservoir adapted to contain liquid fuel, a hollow carburetor and fuel pump coupling, a joint coupling forming a communication between the reservoir and the first mentioned coupling, an intake manifold connection, a pipe forming a communication between the intake manifold connection and the joint coupling, a valve for closing the intake manifold connection, a valve for closing the communication between reservoir and the joint coupling, and a normally sealed rotatable vent cap carried by the reservoir and having a vent opening which is adapted to be opened when 4 the cap is rotated in one direction and closed when the cap is rotated in an opposite direction to control the flow of liquid fuel from the reservoir and to hold the fuel within the reservoir when desired.

WILL R. S. MILLS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,296,229 Tampier Mar. 4, 1919 1,404,152 Kettering Jan. 17, 1922 1,448,752 Kopf Mar. 20, 1923 1,617,868 Skaggs Feb. 15, 1927 2,088,316 Alvarez July 27, 1937 2,103,516 Dempsey Dec. 28, 1937 2,215,680 Wiley et a1. Sept. 24, 1940 2,389,685 Pike Nov. 27, 1945 FOREIGN PATENTS Number Country Date 438,854 Germany Dec. 28, 1926