US1106270A - Fuel-delivery system. - Google Patents

Description

J. ZAGORA.

FUEL DELIVERY SYSTEM.

APPLICATION FILED AUG. 28, 1918.

Patented Aug. 4, 1914,

Q vi/Mwmco GH'DZHGIJO UNITED STATES PATENT OFFICE.

JOSEPH ZAGORA, OF RACINE, WISCONSIN.

FUEL-DELIVERY SYSTEM.

To all whom it may concern Be it known that I, JOSEPH ZAGORA, a citizen of the United States, residing'at Racine, in the county of Racine and State of (Visconsin, have invented certain new and useful Improvements in F uel-Delivery Systems; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in fue deliverysystems for motors.

One object of the invention is 'to provide a fuel delivery system having an auxiliary supply tank and improved means for con trolling the overflow therefrom without interfering with the operation of the fuel pump of the system.

Another object is to provide a fuel delivery system in which the necessity of connecting the overflow of the auxiliary tank with the nain tank is obviated thus dispensing With the use of the usual long return or overflow pipes.

With these and other objects in view, the invention consists of certain novel features of construction and the combination and arran ement of parts as will be more fully descri%ed and claimed.

In the accompanying drawings is shown a diagrammatic view of my improved fuel supplysystem. 1

Referring more particularly to the drawing, 1 denotes the main fuel supply tank, 2 denotes the auxiliary supply tank, 3 denotes the pump and 4 denotes the carbureter of the fuel supply system to which my improvements are applied.

The auxiliary tank 2 is connected by a pipe 5 to the fuel pump 3 and the latter is connected by a fuel conducting pipe 6 to the main supply tank 1 which may be located at any desired point with respect to the auxiliary tank and carburetor of the system. The auxiliary tank 2 is connected by a fuel supply pipe 7 with the carbureter 4 and said pipe 7 has on the end thereof in the auxiliary tank 2, a strainer 8 of the usual or any suitable construction.

The auxiliary tank 2 is provided with an overflow pipe 9 which extends upwardly to a point near the upper end thereof and t 1s connected at "its outer end with the fuel conducting pipe 6 a short distance from the connection of the latter with the pump 3 as Specification of Letters Patent.

Application filed August 28, 1913.

Patented Aug. 4, 1914. Serial No. 787,191.

shown. In the upper end of the auxiliary tank is an opening 10 which is normally closed by a hollow cap 11 having a centrally disposed air vent 12 around the inner end of which and projecting downwardly from the inner side of the cap is a valve seat 13. On the upper end of the overflow pipe 9 or the end within the tank 2 is also formed a valve seat 14 with which is normally engaged a valve 15 connected to and operated by a float 16 arranged above the end of the pipe 9 and which is lifted-by the fuel in the tank when said fuel reaches a point above the upper end of the pipe 9. The valve 15 is provided with a stem 17 which extends upwardly through the float and through the valve seat and air vent 12 in the cap 11. The opposite end of the valve stem 17 extends beyond the valve 15 and projects into the upper end of the overflow pipe 9. On the projecting upper end of the valve stem 17 above the float 16 is arranged a vent closing valve 18 which is designed to engage the valve seat 13 and to thus prevent the fuel from the tank 2 from overflowing through the vent should the pipe 9 for any reason become clogged or the fuel enter the tank 2 faster than it can be discharged through-the overflow pipe.

The pump 3 comprises a cylinder 15) open at its ends and having on one end right angular oppositely projecting extensions 20 and 21 which are open at their ends and threaded internally to receive coupling members 22. WVith the coupling member 22 in the extension 20'is connected the outer end of the supply pipe 5, While the coupling 22 in the extension 21 is connected with the fuel conducting pipe 6. In the coupling member 22 of the extension 20 is arranged a valve seat 23 with which is engaged a check valve 24. In the coupling member 22 of the extension 21 is arranged a valve seat 25 with which is engaged a check valve 26.

The valves 24 and'2G are arranged to open which bears against the flanged end of the head 31 of the piston and when revolved by the shaft 35 projects the piston into the cyllnder against the pressure and resistance of the spring 341, but as this pump forms no 'part of the present invention, it will not be further described.

In the operation of my improved auxiliary tank motor fuel delivery, the valve 15 carried by the float 16 will normally engage the valve seat 14 on the upper end of the overflow pipe and will prevent the air in. the auxiliary tank from entering the pipes 9 and 6 and interfering with the operation of the pump 3 while the auxiliary tank is being filled. As the fuel inthe tank 2 rises to a certain point,.tl1e float 16 will be raised and the valve 15 thus disengaged from the valve seat 1 1 and the upper end of the overflow pipe uncovered thus permitting the fuel --in the auxiliary tank to overflow through the pipe 9. Should the fuel in the auxiliary tank continue to rise in the tank faster than it overflows therefrom, the float 16 will be further raised until the valve 18 fuel from overflowing preventing the By connecting the overthrough the vent.

' flow pipe 9 with the fuel supply pipe 6 as herein shown and described, instead of connecting the same with the main tank 1, as is the usual custom the necessity for providing a long return overflow pipe is obviated and much better results are obtained because in the long return or overflow pipes the flow of the return fuel from the auxiliary tank often becomes sluggish and interferes with the proper operatiton of the system.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Having thus described my invention, what I claim is:

1. In a fuel 'delivery system for motors,

the combination with a main supply tank, of an auxiliary tank, a fuel conducting pipe connecting said supply tank with said auxiliary tank, a pump connected to said fuel conducting pipe to lift the fuel from the main tank to the auxiliary tank, an overflow pipe connected at its outer end with said fuel conducting pipe adjacent to the inlet end of said pump and having its opposite end extending upwardly in and to near the upper end of said auxiliary tank, a valve seat on the end of said overflow pipe, a float arranged in said auxiliary tank, a valve carried by said float and adapted to engage said valve seat and to close the end of the overflow pipe until the float is lifted by the rising of fuel in the auxiliary tank, a cap arranged on the upper endof said auxiliary tank and having therein an airvent, and means carried by the float to close said vent when the float is raised.

2. In a fuel delivery system for motors, the combination with a main fuel supply tank, of an auxiliary tank, a fuel conducting pipe to connect said main tank with said auxiliary tank, a pump arranged in said fuel conduct-ing pipe, an'overflow pipe connected at its outer end with said fuel conducting pipe near the inlet end of said pump and having its opposite end extending upwardly in and to near the upper end of said auxiliary tank, a valve seat-on the! upper end of said pipe, a float arranged in said auxiliary tank and having connected therewith a valve stem, said stem projecting above and below the float and havin its lower end engaged with the upper end of the overflow pipe, a valve on said end of the valve stem to engage the seat in the upper endof said overflow pipe whereby'the latter-is closed, a cap on said auxiliary tank and having therein an air vent, a valve seataround the lnner end of said vent, a valveon the upper end of said stem to engage said seat and thereby close said vent, a carbureter,and a fuel supply pipe to connect sald carbureter with said auxiliary tank.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOSEPH ZAGORA. Witnesses:

CHRISTIAN JoHNsoN HAROLD JOHNSON.

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