US1116790A - Feed means for oil-burning apparatus. - Google Patents

Description

G. W'. BOTHWELL.

FEED MEANS roa OIL BURNING APPARATUS. APPLICATION FILED JUNE 9,-1913.

" 1,1 16,790. Patented Nov. 10, 19M

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THE NORRIS PETERS C0,. PHOTO'LITHLZ. WASHINGTON O- Cv GEORGE w.- BOTI-IWE'LL, or oN'rAR'Io, .oALIFoRNIAQ FEED MEANS For. o n-nuniiiive APPARATUSQ To all whom it may concern Beit known that I, G ORG Born WELL, a citizenfof the United-Statea'residing at Ontario, in the .county of San Bernardino and StateofCalifornia, have invented 'anew and useful Feed Means for Oil-Burning Apparatus, of which the following is a specification.

This invention relates to an apparatus for burning oil for heating orchards or for other purposes, and the main object of the invention is to provide an apparatus which will require the minimum'of care or over sight during its operation.

The'invention relates to oil burningapparatus of the class wherein oil inan airtight tank is supplied gradually by allowing air to enter the tank to displace the oil, on the principle of a fountain feed. In such fountain feed apparatus a quantity of oil is allowed to escape in starting before sufficient vacuum is obtained in the tank to sustain the column of oil in the tank, and oneobject of the invention in this connection is to provide means forcollecting and holding the oil" escaping in thismannerand supplying it gradually to the burner. I

A further obj ect'of the invention is to provide convenient means whereby the apparatus may be regulated for effective operation and the supply of oil may then be turned on and off without disturbing the regulation.

Another object of the invention is to provide for cutting off the connection between the tank and the fountain feed means when.

the burner is not being used, so as to maintain a condition. of vacuiun in the supply embodiment of the feed controlling device.

tank. v v p Other objects of the invention will appear hereinafter.

The accompanying drawings illustrate an my invention, and referring thereto:

2 Figure 1 is a vertical section of the apparatus, the supply tank being shown partly in elevation. Fig. 2 is a side elevation of Fig. 8 is a plan view of the feed devices, portions of th tank being shown in section.

l designates a supply tank having a closure 2 at the top which is adapted to tightly close the tankduring operation, and is only removed for the filling of thetank. Said tank 1 is preferablysupported on a -reservoir 3, formed as an opentopped pan Specification of Letters Patent. Y P t nt d v 1 1 14. Application filed June 9, 19-13. Serial mywasas.

downwardly from the tank 1. An outlet p p t leads tram the 1Wr part o jtank 1 the outletpipe 5'to a 'tee 7,one branch of f I to a valve 6 controlling communication from adapted to'fit withina flange 4, extending which is connected through a regulating valve 8 to afittingf) having an outlet con- I I nection 10 to the reservoir 3. A siphon tube v 11 extends upwardlyfrom the tee 7 from a point below the to-p of the reservoir and over and downwardly into the fitting 9, be1ng'suffic'iently'-smaller'than the fitting. 9

to permit air'to enter fitting 9'around the siphon tube 11. g Reservoir 3 has an outlet pipe 12 communicating'. with any suitable heater, for examplawith a-heater of the typeshown in myapplicatio-n, "Serial No. 763,438, filed April 24, 1918,comprising heater casing 14 having a stack 15 "and provided with'a' vaporizing tube 16 within the casing andv an outlet 17 for directing a jet of vapor into the casing, [said casingfhaving an air inlet 18 through which extendsthe supply pipe 19 for the heater. Said supply pipe 19 communicates throughaseal consisting of a downward and upwardbend 20 in thepipe 12 aforesaid, the outer end of said pipe 12 being connected to atee 22 which. is connected to the supplypipe 19 for the heater,

anda stand pipe being connected to said tee and extending upwardly and being open at its upper end to-serve as a vent as describedin my said application. In place of this'form of heater, however, any other form of heater may be used which is adapted to operate with a small pressure of oil.

In order to facilitatedisconnection of the heater from the supply tank,pipe 12 is preferably connected to the] reservoir 3 by a coupling consisting of ascrew sleeve 25'having right and'left screw threadsengaging respectively withascrew thread on the pipe 12 andwith a screw thread on a nipple 26 screwing into the sideofthereservoir 3.

The operation ofthis form of my invention. is as follows: Tank; 1 is filled withoil,

the closure 2 being removed for that purpose and then tightly'replaced, so as to prevent air from entering [the tank during the oper-,

ation. Whenit is desired to use the burner,

the valve 6-is opened wide andthe valve 8 having been previously, opened ]to "proper extentfor operation of the burner, oil flows down through the fittings 5, 6, 7, Sand 9 into the reservoir 3,, the line of fittings aforesaid being inclined as shown in Fig. 2 to facilitate passage of the oil in this manner. Any excess of oil in starting, due to a larger opening of the valve 6 than of the valve 8 is carried off through the tube 11 and dischargedinto the fitting 9, passing thence into the reservoir 3. Said reservoir is of sufficient capacity to hold all of the oil which escapes during the production of a vacuum in the upper part of tank 1, sufiicient to sustain the remaining column of oil in the tank and the oil thus fiowin into reservoir 3 flows radu cover the lower part of the outlet. of the shut off valve 6 so that the device acts as a fountain feed, the air for displacing the air in the supply tank 1, enteringthrough the tube 11 and passing up through the valve 6 whenever the oil in the reservoir 3 and fittings 7, 8 and 9 falls below the level of the inlet of tube 11 into tee '7, such inlet being; indicated by a dotted line a in Fig. 2. vVhen this occurs a small quantity of the oil is discharged, enough to accumulate in and fill the provision of the shut off valve 6 be.-

tween the tank and the "air inlet for the founta1nfeed. I have found that in applymg a fountaln feed to a tank of this characs ter especially when the same is used in the open air in connection with orchard heaters, the fluctuations of temperature cause sufficient dilatation and contraction of the gases in the upper part of the tank 1 to interfere with the preservation of an effective vacuum inthe upper part of said tank, the vacuum being reduced in the expansion of the gas and not being fully restored in contraction, due presumably to gradual evaporation of gas into the space above the liquid in the tankby reason of the low pressure therein and the heating of the liquid and this gas not being fully absorbed when the liquid again 00015. By closing the valve 6 tightly when the burner is not in use, I am enabled to retain a condition of vacuum indefinitely ;6O

in the tank 1, so that when the valve'fi is immediately in normal'manner without any sudden outrush of oil due to lack of vacuum.

in the tank.

What I claim is:

In an oilburning apparatus, a feed means comprising a tank, a reservoir below the tank, an outlet connection leading from said tank to said reservoir and provided with two valves, and having an air inlet opening in its top. between one of said valves and said reservoir, and an air inlet tube extending above said air inlet openingand communica ting with said outlet connection between sald valves, at a pointvbelow the top of the reservoir.

In. testimony whereof,.I have hereunto set my hand at Los Angeles, California this 29th day of May, 1913. l

GEORGE w. BOTHWELL.

i Copies of this patent may be obtained for five cents each,-tby addressing the f Commissioner of Iatents WashingtdmDJGP-

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