US1293756A - Fuel-feed device for engines. - Google Patents

Description

W. W. GORE.

FUEL FEED DEVECE FOR ENGINES.

APPLICATION man FEB. 5. $918.

Patented Feb, 11, 1919.

2 SHEETS-SHEET I.

jhvenior' T/I ZZrrcn Wzfors di t/ 11 "r" W. W. GORE.

FUEL FEED DEVICE FOR ENGINES.

APPLICATION FILED FEB. 5. ms.

lutentvd Feb. 11, 1919.

2 SHEETS-SHEET 2 sEsT AVAlLAB LE cor V IN TED STATES PATENT OFFICE.

WARREN W. GORE, F MADISON, WISCONSIN, ASSIGNOR TO FULLER & J OHNSON M'FGr 00., or anson, WISCONSIN,

A oonrone'rrorr or WISCONSIN.

FUEL-FEED DEVICE FOR ENGINES.

Application filed February 5, 1918. Serial No. 215,453.

To all whom it may concern:

Be it known that I, WARREN W. GORE, a :it-izen of the United States, residing at Vladison, in the county of Dane. and State of Wisconsin, have invented certain new and iseful Improvements in Fuel-Feed Devices 'or Engines, of which the following is a pecification.

This invention relates to devicesfor feedl'ig liquid fuel to internal Combustion enines, and has reference more particularly a fuel feeding device for use on engines sing kerosene, or other comparatively heavy ydrocarbon fuel. Owing to the difficulty f starting on kerosene, it igf customary to fiflll; kerosene engines with 'gasolene, and, fter they are primed and sufficiently heated i vaporize the kerosene, to then cut out the a-solene and switch on the kerosene. The main object of the present invention is provide a simple and easily manipulated wice to facilitate these operations which ltlll dispense with the necessity of separate lSOlBllU and kerosene receptacles. Other )jects are, to provide a fuel feed device hich may dispense with the usual float- .amber attacbment to the charge-forming :vice or carbureter while maintaining a hstant level of the liquid fuel in the latter,

provide a device which may employ either vacuum tank or a positive feed pump for awing the kerosene from the main supply 1k, to provide a fuel feed device capable of livering first pure gasolene, then autoitically changingto a mixture of gasolene d kerosene, and finally delivering pure rosene to the engine, and to provide a fuel ad device of such a character that, by the nipulat-ion of a single valve, the entire iy of kerosene in a reservoirintermediate a main supply tank and the carburetor can drained back into the main supply tank, l the reservoir re-fille 1l with gasolene for rting the engine. Still another object is provide in a. fuel feed device means by ich the normal fuel feed passages to the bureter can be drained into the main suptank at the same time that the reservoir lrained, so as tocompletely empty the l passages of the heavier fuel preliminary illing with'tho lighter fuel. ther objects and attendant advent :he invention will be readily under appreciated by those skilled in the from the following detailed description, taken in connection with the accompanying drawings wherein I have illustrated practical and workable embodiments of the principleof the invention, and in which Figure 1 is a view of the complete device partly in elevation and partly in vertical section, including an engine cylinder and pist011;

. Fig. 2 is a view similar to the left half, of

Fig. 1, showing the use of a positive feed fuel pump in lieu of the vacuum tank of Fig. 1; and

Fig. 3 is a. detail view, illustrating an alternative form of drain valve which may be employed in lieu of the drain valve shown in Fi'g's 'fl and 2.

Referring to Fig. .1 of the drawings, 5 designates the main fuel supply tank degned to contain kerosene or other relatively heavy hydrocarbon fuel. '6 is a vacuum tank generally similar to those at present em;

- specification of Letters Pateiit. Pate ted Feb 11, 1919. v

ployed for drawing the fuel from the main supply tank to a point suliiciently elevated above the carbureter to insure a steady avity flow to the. latter, this vacuum tank ein equipped with the usual float-controlle valve 7 in-its bottom for maintpining a substantiailygconstant levelof fuel'in the vacuum tank, as usual? The top portion ofthe vacuum tank is connected by a pipe 8 with the main fuel tank 5, and by a pipe 9; with Y with the reservoir 12 through a registering port 16 in the bottom of the latter, and a ycrtieiil overflow and drain duct 17 intersect. ing the horizontal duct 14. In the duct 14:, between the ducts 15 and 17. is formed a valve seat 18 that is normally closed by a. compression valve 19, the stem 20 of which has. threaded engagement with a packed tubular extension 13 of the valve casing 13,

and is provided at its outer endwith a bandle 21 for manual turning. A pipe 22 passes iil'irough the bottom of reservoir 12 and enters the upper end of the vertical duct 17 of the valve casing, and another pipe 23 connects the lower end of duct 17 with the main fuel tank 5. The pipes 2-2- and 23 and the vertical duct 17 of the valve casing together constitute a constant-level overflow connection between the reservoir 12 and themain livery pipe 3-1 into the fuel reservoir 12.

fuel tank 5, while port 16, ducts 1'5 and 14, the lower portion of duct 17, and the pipe 23 together constitute a valve-controlled drain for the reservoir to the main fuel. tank in amanner more particularly hereafter explained. The stem of valve 19, where it intersects the vertical duct 17, is reduced, as"

shown at20, so as not to obstruct the overflow through pipe 22, duct 17, and pipe 23.

The right-hand end of valve-casing 13 is connected by a pipe 2% that communicates With duct 14: with a charge-forming device or carburetor which, in the simple form here shown, may consist of a tube connected to the engine manifold 10 and containing a mixer and vaporizer consisting of a nozzle 26 delivering'the fuel at the throat of a Venturi-tube 27; the lower end of ,nozzle 26 being mounted in an internal bracket casting of the pipe 25 that is cored to provide an L-shaped duct 28 connecting pipe 2ft and nozzle 26; this duct being preferably controlled by a manually operated throttle valve 29, which is always open to a greater or less extent.

At 30 is shown a gasolene filling pipe that communicates with the upper'portion of the reservoir v12 and is formed with a funnel-' shaped'upper end or'mouth 30', in which is preferably-placed 'a screen 31. 32' is an air vent opening at the upper end of the reservoir 12 for maintaining. atmospheric pressure .on the liquidithrein Where the filling lilbe .is sealed, as will preferably be done, to exclude dirt. 5 I

In operation, assuming that the engine is. cold and that the reservoir and carburetor are filled with kerosene from the-last rune ning to the hei ht of the overflow tube 22, the valve 19 is acked off, and all the kerosene in reservoir -12 is permitted to drain back into the tank 5. This also drains the -"carbu'reter and the passages leading thereto.

foraw The valve 19 is then closed, and gasolene is poured into the reservoir through filling tube30 preferably to the height of the overflow tube 22, the gasolene of course standing at the same level in the carbureternozzle 26. The-engine is thcn started in operation on puregasolene. Shortly thereafter, however, the vacuum tank G'begins to supply kerosene to the gasolene in the reservoir 12, so that that gradually becomes leaner in gasolene and richer in kerosene, until all of the gasole-nc has been consumed. By that time, however, the engine has become suflicicntly heated to vaporize the pure kerosene and run on that alone.

ile the engine operates'on a mixture Fig. 3 illustrates another form of'drain valve that may be substituted for the com pression drain valve previously described and. shown in Figs. 1 and 2; this modification consisting of an ordinary taperedand ground cook 35 mounted in the valve casing and intersecting the duct 14 of the latter, said cock having a transverse port 36 that in the normal running of the. engine 00-- cupies the position shown, .but, for draining purposes, preliminary to starting, may be turned so as to establish the drain passage from the reservoir 12 to the mam fuel tank 5.

1. In a fuel feed device forengines, the combination of a. main fuel tank, a fuel reservoir located at a higher level than said tank, means for causing fuel to flow from said main tank to said reservoir, an overflow pipe in-said reservoir, a reservoir drain pipe. connected into said main fuel tank, a charge-forming device, and a cored valvecasing having a continuously open duct connecting said overflow and drain pipes, a continuously open duct connecting said reservoir and charge-forming device, and a valve-controlled duct connecting said reservoir and drain pipe.

.2. In a fuel feed device for ehgincs, the

combination of a main fuel tank, a fuel reservoir located at a higher level than said tank, means for causing fuel to flow from said main tank to said reservoir, an overflow pipe in said reservoir leading through the bottomof the latter, a reservoir drain pipe connected into said main fuel tank, a chargeforming device, a cored valve casing having a continuously open duct connecting said overflow and drain pipes, a continuously open duct connecting said reservoir and charge-forming device, and a duct connecting said reservoir and drain pipe, a manually operable valve for opening and closing said last-named duct, and a filling tube connected into the upper portion of said reservoir.

3. In a fuel feed device for engines, the combination of a main fuel tank, a fuel reservoir located at a higher level than said tank, means for causing fuel to flow from. 1

said main tank to said rcservoir a chargeforming device, a continuously open fuel supply passage loading from said reservoir to said charge-twirling device. and a mlvccontrolled drain passage loading from the bottom of said rm noir to said fuel tank,

said drain pass-ago and said fuel supply 5 having a Gammon communication passage mm the bottom 01: sald reserven.

4. In a fuel feed device for envines. the.

uembinaiion of a main fuei tank, fine reservoir located at ahighey leve han said pipfi connec'fied mm said 211::

--l tank,

a charge-forming; device, and a sci-rad casing having a centinuously span duct c031- nscting said reservoir and charga-forming device, and a valve-controlled duct connec lz ing said continuously Open duct and. saw. drain pipe

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