US2018601A

US2018601A - Generator gasoline burner

Info

Publication number: US2018601A
Application number: US463931A
Authority: US
Inventors: Brumbaugh Isaac Vernon
Original assignee: American Stove Co
Current assignee: American Stove Co
Priority date: 1930-06-26
Filing date: 1930-06-26
Publication date: 1935-10-22
Anticipated expiration: 1952-10-22

Description

Oct. 22, 1935.- v. BRUMBAUGH GENERATOR GASOLINE BURNER Filed June 26, 1950 s Sheets-Sheet 1 Oct. 22, 1935. l V. BRUMBAUGH 7 2,

GENERATOR GASOLINE BURNER Filed June 26, 1950 9 Shets-Sheet 2 Oct. 22, 1935.

I. V. BRUMBAUGH GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 5 I Oct. 22, 1935. I I. V.JBRUMBAUGH 2,018,601

. GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 4 Oct. 22, 1935f 1. v. BRUMBAUGH 1 2,018,601 1 v GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 5 a; as 45 2 4 A) r L90 i i 0 62 fgy V l v 3.443% (31 I 5 -9.7/.

Oct. 22, 1935. 1 v BRUMBAUGH 1 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 6 Oct. 22, 1935. v BRUMBAUGH 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1950 I 9 Sheets-$heet '7 'Jfl 62 5] (95 (91 g 6] SL v (i OctQZZ, 1935. 1. V. BRUMBAL JGH 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet s Oct. 22, 1935. 1. v. BRUMBAUGH 1 2,018,601

- GENERATOR GASOLINE BURNER Filed June 26, 1950 v 9 Sheets-Sheet 9 i 1 Aug;

Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE GENERATOR GASOLINE BURNER Application June 26, 1930, Serial No. 463,931

15 Clalms.

This invention relates to improvements in gen-v erator gasoline burners and the principal objects of the invention will first be briefly referred to.

It is well known that all grades of gasoline are composed of light and heavy constituents, and

that in generating any grade into vapor, the lighter or more volatile constituents are the first to be vaporized. I find that it is from the heaviest constituents that carbon is formed and accumulates and interferes with the operation of the generator mechanism. Therefore one of the objects of my present improvement is to hold the heaviest constituents in the generator and prevent them from contacting with said mechanism in the vaporization thereof and thereby substantially avoid the well known interference of carbon with the operation of the burner.

Another object of the present invention is to so construct the generator and its mechanism, that said mechanism is not subjected to the direct heat of the flame that heats the generator, whereby the accumulation of carbon to interfere with its working is avoided.

It is also well known to those skilled in the art, that either an auxiliary burner or torch is used for initially heating the generator, and it is a further object of the present invention to avoid said auxiliary means and at once produce an initial heating blue flame having substantially greater heating eifect in the generator, thereby heating it in less time and without disagreeable odor and smoking.

Further objects of the present improvement have not been thus far described or referred to but they will be readily understood from the following description.

In the accompanying drawings:

Figure 1 is a top plan view of a gasoline stove or range that embodies my improvements.

Fig. 2 is a diagrammatical view showing the several elements which comprise my new burner.

Fig. 3 is a top plan view of one of the top burners of my improved range and the mixing pipe shown in horizontal sectional view.

- are fed to the mixing tube of the burner.

Fig. 9 is a top plan view of the combined top burner and oven burner.

Fig. 10 is a side elevation of the top burner which also supplies vapor for the oven burner.

Fig. 11 is a side elevation of the burner ID with the generator tube and thesurrounding housing therefor removed.

Fig. 12 is a horizontal sectional view through the top burner that also supplies vapor to the oven burner.

Fig. 13 is a horizontal sectional view through the top burner, the generator tube and surrounding housing removed.

Fig. 14. is a detached perspective view of the generator tube and its supporting housing. is Fig. 15 is a detached perspective view of the housing 43.

' Referring to the drawings in which I indicates a burner having connected therewith a suitable mixing tube 2. This mixing tube communicates with the interior of the burner I through suitable opening 3. This mixing tube is located as here shown at the rear side of the burner and it curves around to the left side of the said burner and is provided with a head-like portion 4. This headlike portion is provided with a suitable air inlet 5, and passing into this head-like structure is the gasoline nozzle 6. A suitable gasoline tank 1 is located at one side of the stove frame 8 which is shown in Figure 1 in dotted lines. This gasoline 130 tank is supplied with gasoline through a suitable cap opening 9 and air is forced into this tank by means of a suitable pump III that is connected with the said tank by a pipe I l The'mixing tube 2 therefore constitutes what may be aptly termed as a manifold through which the mixed fuel and air flows to theseveral burners.

The air fed through this pipe I I to the tank is controlled by a suitable valve I2 placed in the upper end of a tubular section I3. When the 40 tank is to be supplied with air this valve I2 is turned upward until its valve is unseated when air will pass into the said tank. Also passing into the tank 'I is a tubular member I4 that has its lower end I5 adjacent the bottom of said tank. A pipe IB is connected with this tubular portion I4 outside of the said tank and a suitable valve I'I controls the flow of gasoline to the said pipe I6. It will be understood that the gasoline being under air pressure it will be forced through the lower end I5 of the tubular member I 4 and into the pipe I6. This pipe I 6 communicates with the generating tube I8 and this generator in turn communicates with the gasoline nozzle 6 that feeds for initial starting the atomized gasoline and air through an opening l9 into the mix- 4| (Fig. 8') which is in communication through mg chamber 2. An air pipe 20 has its outlet end 2| communicating with the restricted portion 22 of the nozzle 6 and its inlet end 23 communicating with the tubular portion l3 at a point below the line through the nozzle when it is on its seat 21. The stem 28 that carries this valve is provided with a screw-threaded part 29 that engages with a screw-threaded part 30 on the tubular portion 3| that is connected with the nozzle l9. 4 The outer end of this stem 28 is provided with a handle 32 whereby the valve may be moved backward and forward within the tubular portion 3|.

Attention is called to the extension 33 of the' valve26 that passes through the restricted por tion 22, and projecting from this stem 33 is a needle valve 34 that operates in connection with the nozzle opening l9. This nozzle portion [9 is preferably Inade separate from the tubular member 3| and is screwed in its extremity asfshown at 35. The burner is provided at its underside with a depending portion 35 that has longitudinal slots 31, and this depending portion forms a subfire for heating the generator l8 that is detachably supportedunder the burner and extends at an angle parallel with the sub-burner 36. This sub-burner communicates with the mixing tube2 so that the said sub-flre'bumer 36 is supplied from the mixing tube through the openings '3 and 39 as shown in Figure 6. It there- V to the said sub-fire burner 31.

As shown the generator l8 (Fig. 7) is inclined upwardly from its inlet end 40 to its outlet end the opening 42 with the tubular portion 3| that oarries'the gasoline nozzle 6. For the purpose of supporting this generator and holding it' in this inclined position a suitable housing 43 is provided through which the generator |8Vpasses as shown in Figure 7. The vertical ends of this housing 43 are detachably' connected by cotter" pins 44 that pass through the ears 45 of the housing and the burner. This inclination is'very important and its operation will be referred to further on in this description. This housing 43 serves as means'ior confining the heat from the sub-fire flamearound the s'aidgenerator by means of its vertical wall'43' and at the same time serves as end walls provided with open ended vertical slots 43 whichreceive the tube |3 of the generator. outwardly extending perforated ears 43 are located at'the upper ends of the said end walls and these ears are provided with perforations through which the cotter pin 44 passes as shown in Figurefi. These ears 43 are in separated relation so that they rest at the inner side of the ears 45 of the burner. A side wall 43" also forms a part of the said housing 43. 7

Attention is called to the construction of the end 4 of the mixing chamber 2. This end of the 5 mixing chamber communicates with the burner l as before stated and its lower wall 48 declines gradually to'a pocket 49. This pocket 49 has one end of a pipe 59 communicating with the said pocket and the opposite end of the pipe is con--10 nected with a suitable reservoir 5| that for convenience is shown located at the rear side of the stove. The object and function of this pocket and the pipe 52 that connects it with the reservoir 5| and this reservoir will be explained pres- 15 ently.

The pocket 49 is to receive the condensed gasoline produced from the mixture of gasoline mist and air and which is conveyed through the pipe 52 to the tank 5|. A vertically arranged cham- :0 her 53 is connected by a pipe 54wi'th the bottom of the tank 5|. A float 55 is located in the cham ber 53 which has a stem 58 connected with it and projecting through the top of the chamber 53. This chamber 53 is located in a convenient place 95 for the operator to observewhen the tank 5| is full of the condensed gasoline. When this point is reached'in the operation of the burner the operator by removing the drain plug 51 located in the bottom of the chamber 53 can empty the 50' gasoline from the tank 5|. 7

The pipe 52 connected with the upper portion of the tank 5| is provided with a trap 58 located therein at suitable'point between the said tank and the pockets 49. The object of this trap is to 85 provide a seal for the gasoline vapor flowing from the nozzle 5 sothat there will be'no escape of this gasoline vapor to the tank 5| when the burner is in full operation. It will be understood that after the generator and burnerare heated up 4.0 there will be no condensed'gasoline flowing to the pockets 49 and hence no condensed gasoline flowing to the drain tank 5|. In the event of but one generator being in operation it is necessary that each of the connections 52 be provided with a trap 45 58 and 58' located between the generators and r the reservoir 5| to which the said pipes are connected. Otherwise there would be an escape of vapor from the generator in operation to the burner not in operation. The arrangement here 50 shown prevents that result. 7, V V V V For the purpose of indicating the air pressure in the gasoline supply tank 1 a suitable air pressure indicator 59 is attached to the tank. It

will be understood that the tank must be sup- '55" plied with a certain amount of air pressure to force the gasoline from the tank I to the nozzle 6 and this indicator will show to the operator when there is the proper amount of pressure in the tank for that purpose.

By reference to Figure 1 it will be observed that the top burner portion comprises the said burner a similar burner l and two burners and I and also an oven burner I. The gasoline generated by the burner supplies vapor for the burners and I while the burner supplies gasoline vapor for the oven burner I. The burners and l are provided with

supply tubes

60 and 6| and these two supply tubes are joined by a cross supply tube .62, which in turn is connected with the mixing tube 2 of the burner by a tube 63, while the oven burner i has a sup- 7 ply tube 64. that communicates with the mixing tube 4' of the burner I will first explain the operation of the burnerrfffi I and then will explain the operation of the other burners.

Initial. starting of burner 1 The operator first closes the gasoline valve I1 and then opens the air valve I2 and by means of the pump I the tank is supplied with the proper air pressure for operation, about twenty pounds. The generator valve 26 being closed through the medium of its handle 32 the gasoline flows from the tank I to the pipe I6 and through the pipe to the generator I8. The parts of the stove all being in the positions indicated then to start operation of the burner I the operator opens the air valve 24 which feeds air through the pipe 20 to the outlet 2| and to the nozzle 6. Then while this air valve is open the operator opens the valve 26 and gasoline is forced through the restricted portion 22 to the nozzle 6, the air and gasoline being mixed to some extent before it reaches the nozzle 6 produces a liquid mist. This mixture of gasoline mist and air flows into the mixing chamber 4 where additional air is drawn into the head 4 of the mixing tube through the opening 5. At this time the burner and generator of course are not heated. The operator through the medium of the handles which control the air valve 24 and the gasoline valve 26 can immediately cause a cold mixture (which will burn with a blue flame) which will pass through the mixing tube to the burner I and this cold mixture is lighted and at the same time this cold mixture which supplies a blue flame is fed to the sub-fire burner 36 and this cold mixture flows through the slots 31 of the subfire burner. In fact this cold mixture is supplied simultaneously to the burner I and the sub-fire 36. Hence when the burner I is lighted from above, this cold mixture from the sub-fire instantly lights at the same time through the opening 65. Therefore the burner I and the sub-fire burner 36 are both producing a blue flame from this cold mixture. It is well known that this blue flame is much hotter than if it were yellow so that in about forty seconds time the burner, the generator and their parts are sufllciently heated to produce the gasoline vapor to the sub-fire and also the burner I and at this time the air valve 24 will be closed and the burner will continue to operate normally producing the usual blue flame at the burner I. During the operation of the burner -I the sub-fire burner continues to burn and the generator I8 is kept hot by this sub-fire flame.

In the initial starting of the burner and before the burner, generator and their parts become heated up from the flame, the mixture of air and gasoline causes a mist to flow through the opening I 9 (Fig. 8) into the mixing chamber 4 in which additional air flows through the opening 5 to this misty mixture. All parts of the burner and the generator and the mixing tube being cold at this time there is some condensation of this misty mixture. In order to take care of the condensation of the gasoline caused by striking the cold parts with which it comes in contact I provide the mixing tube 2 with a. pocket 49 that depends from the lower Wall and the lower wall 48 of this mixing tube is inclined toward the said pocket so that any condensed gasoline finds its way to this pocket and is drained; through the pipe 52 to the drain tank 5I. stood of course that when the parts of the burner and generator are suifioiently heated then condensation of the gasoline ceases. This pipe 52 It will be under is provided-with, a trap 58 that serves the purpose before mentioned of preventing the flow of gasoline vapor from the mixing tube 2 to the tank 5 I.

Purpose, function and operation of the inclined generator 5 In Figure 7 the generator I8 is shown in an inclined position to which brief mention has heretotore been made. The reason for this arrangement of the generator I8 will be stated as follows. 10 When the burner is started the generator is of course full of gasoline throughout its length and this causes a visible spray made up of a mixture of gasoline and air to flow through the nozzle opening I9. When the burner becomes heated and is normally operating then the gasoline in the generator forms a level substantially at a inv Figure 7'. That is to say, the. gasoline is under pressure in the tank, say twenty pounds, and substantially twenty pounds of pressure is produced in the part b of the generator so that the pressure at b is substantially equal to the pressure in the tank 1 and the gasoline then reaches its level in the generator which is found to be substantially the point a of'Figure 7. Hence the raw gasoline (after the. main burner I is heated) never reaches the gasoline valve 26, its reduced portion 33, its needle 34 and its nozzle opening I 9 when the generator is in full operation. I find that in this arrangement the accumulation of carbon in the generator and in the gas valve tube 3| and around the screw threads 29 and the nozzle and parts cooperating with the nozzle is exceedingly small and. that the burner can be operated substantially without any obstruction occurring in these parts. 35.

I believe this to be caused by reason of the fact that gasoline is composed of course of lighter and heavier particles. These lighter particles are formed into a gas under the warm air conditions and in fact these lighter particles will evaporate 4.0. under atmospheric temperature while the heaviest particles of the gasoline require considerable heat in order to vaporize it. The lighter particles fill the portion b of the generator and the lighter portions which are formed into gas and which 451- reach the valve 26 and the screw thread 29 and the nozzle. and its parts substantially do not form into carbon. In fact a cracking or complete vaporization of the gasoline is necessary to form any appreciable forming of carbon. Hence the above mentioned parts are substantially free from carbon accumulation.

I also believe from experiments made by me that substantially all of the heavy part of the gasoline which causes carbon to form is held for a: time in solution by the raw gasoline in the generator tube I8. These heavy particles being continuously mixed with the lighter raw gasoline particles, the heavy particles, as stated, are held substantially in solution. These are some of the reasons which I believe enable my improved burner to operate for such long periods 01 time without any clogging of the generator. By plac ing this generator on an incline as shown I am able to hold, some raw gasoline in the generator while its upper end is free from this raw gasoline when the generator, the burner, and their parts become sufliciently hot to cause the generated vapor to be supplied to the mixing tube 2.

In fact the following is clearly visible in the operation of my burner. viz: When the burner is being started a mist of gasoline can be clearly seen as issuing from the nozzle 6 when the generator, burner and its parts are cold, but when these parts become sufiiciently heated for the I have not operated this burner sufficiently long up to the present time-to determine positively whether an unobstructed generator tube placed at 7 an inclination as here shown will operate substantially indefinitely without becoming clogged up with carbon but I have satisfied myself that it can be operated for a sufficiently long period of time to enable it to work under the ordinary periods of time that the stove is in operation for a period of several years without becoming clogged up.

A generator tube without any obstructing material' in it such as here shown, can be readily cleaned of any obstructing carbon by having its lower end 40 capable of being opened and closed by a screw 66. By removing this screw 66, an instrument can be readily inserted in the generator and substantially clean it of any obstruction therein. V

Again I call attention to the fact that in burn- V ers heretofore in use the gasoline valve 26, the

nozzle 6 and parts thereconnected are subjected to the direct heat from the burner or the subfire, when a sub-fire is provided. By this it is i meant that usually the tubular portion 31 is the generator which contains the gasoline valve 26 and is directly in the flame of the burner or directly in the flame of'the sub-fire. It will be observed that in my improved construction here shown this is not true and that the only heat to which the valve 26, the nozzle etc. are subjected is heat by induction through contact of the generator with the upper end 3| of the valve 26. In this way the parts above mentioned arenot subject to the intense heat that they are subjected to in the usual construction of generating burners.

In the usual construction of generating burners the passage inside of the generator tube averous'than is the gasoline in the supply tank I which has passed the underwriters. The principal object of the tank 5| is to prevent this condensed gasoline from clogging in the burner structure from any cause whatever and thus be more or less dangerous in thehands of a user. If it should bepreferred the pipe 52 may be extended to a point removed from the stove.

That is to say, the tank 5| could be placed in the cellar, or in fact the pipe 52 in some instances might be extended to the outside of the building and allowed to drain oil in the ground. However the construction herein shown is the preferred construction and removes the danger that would be occasioned by the condensed gasoline gathering in the parts of the burner, as for instance one first using the stove and therefore un- 7 line to be accumulated in the burner.

accustomed to it, might make several attempts to start it which might cause the condensed gaso- When the stove is finally lighted after several attempts the burning of this accumulated gasoline might startle one unaccustomed to its operation and therefore by some wrong operation might lead to a fire. It is to prevent any such occurence that the drain tank 5| is provided. In the operation of the burner this tank is found to be ample for receiving the condensed gasoline. However to prevent the accumulation of this gasoline I '5 provide the communicating chamber 53 so that if by any chance there should be an accumulation of the condensed gasoline it can be drawn from the tank 53 through the drain cook 51.

I have also shown the air passage 20 con- 10 nected with the gasoline tank 1 as the practical way of supplying air which has several advantages. I will state however that it is not essential to the operation of the burner that the compressed air be taken from the tank containing gasoline, because the operation of the burner would be substantially the same if this air were taken from a tank that does not contain any gasoline and therefore in this case containing no gasoline vapor. It is essential however that the air be compressed so that it will issue under pressure together with the gasoline through the nozzle 6. The supply of air frorn'the gasoline tank 1 as stated has several advantages. For instance if an additional tank for the air be pro- 1 'pressureas the gasoline tank in order that the operation herein described be the result. By taking the air from the tank I the pressure on the gasoline is always equal to the air pressure and therefore the above unsatisfactory result is not present.

In my improved burner'herein described the 4,9 mixture of air and gasoline in the form of a mist is burned until the sub-fire heatsthe generator sufficiently to vaporize the gasoline and produce a blue flame independent of the supply of air and at this time the air supply is cut off.

As stated most manufacturers utilize the pipe 3| which contains the valve and its several constructions as a generator. In'this instance the stem of the valve is in the region of the sub-fire and there is a clearance between the stem of the 60 valve and the inside wall of the generator tube of about one thirty-second of an inch. Most manufacturers place such generators in a horizontal position and it only requires a few weeks to an extreme of a few months to cause clogging of the generator because of the carbon that is formed and the corrosion that occurs. The threads of the valve of generators of this type corrode and corrosion and carbon pack around the threads and cause the stem to turn quite hard and in fact very frequently cause a twisting of the stem and stop or substantially stop the operation of the burner.

In my construction the generated gas does not pass over the threads of the valve as the 05 valve housing is not in the generator tube and in my construction the additional and separate generator tube is connected near the valve seat. Also in my construction of generator the threads'of the valve are not corroded nor does carbon pack in the threads sufficiently to cause hard turning.

' It will be observed that the air connection in my construction of generator leads from the gasoline tank 1 and is joined to the valve housing near the orifice I9 and in the construction shown the air 15 connection is between the said orifice I9 and the valve seat 21. In my construction it is important to have the air connection to the valve near the outlet orifice I9 and that is why the connection is made to the valve housing instead of to the generator. In other words I have found it unsatisfactory to connect the air line from the tank I to the gasoline line near the lower end 01 the generator I8.

Attention is also called to the fact that in my construction the air passageway 2| is larger than the orifice I9 and this is so constructed in order to avoid any possibility of clogging the air passage.

The restriction 22 varies in size depending upon the length of the said passageway and the size of the fittings. This restriction of course is smaller than the air passage and the passageway leading to the valve 26 and the valve seat 21.

It will be observed from the construction which has thus far been described that in my improved generator construction the valve 26 and the valve seat 21 are both outside of the region of the subfire, which plays wholly on the generator tube I8. Therefore in this improved construction the valve is much cooler and is heated only by conduction and radiated heat and the valve should last indefinitely.. When the valve forms a part of the generator as in prior structures it soon deteriorates and soon is clogged with carbon and therefore the operation oi the burner is wholly unsatisfactory if not absolutely stopped.

It is rather diflicult to obtain a packing material. that will stand the heat to which it is subjected and by reason of this fact I have inserted a tube 3I between the valve 26 and the packing gland 61. This places the packing gland near the front of the stove which is removed from the heat of the sub-fire as well as the heat of the burner so that the valve stem may be freely turned at all times.

It will also be noted that this improved generator burner is so made that the condensed gasoline can not drain into the sub-fire portion of the burner as the bottom of the mixing tube 2 is inclined and drains into the pocket 49 and immediately passes to the said drain tank 5I. Therefore it is impossible for any condensed gasoline whatever to reach the burner. It would be most impractical to make a burner to be operated by my improved method of priming the generator ii the condensed gasoline could reach the burner and thus drip from the burner. Such operation would be manifestly dangerous.

I find that if the burner should be made so that the condensed gasoline could drain into what I call the burner head it would be evaporated more rapidly and the vapor would not be sufilciently mixed with air and a yellow flame would occur at the burner slots above the condensed gasoline. The length of time it would take to completely evaporate the condensed gasoline in the above construction, of course, depends upon the design of the burner and also upon how much gasoline had been condensed and had reached the burner.

In the instance of the several attempts heretofore mentioned in priming the burner it would naturally take a fairly large receptacle to hold the condensed gasoline. In my construction where the gasoline is at once drained away, failure to properly prime the burner can not cause any trouble to a person failing to properly prime the generator, and he can immediately proceed to try again. Also, if for some reason the generator should not be completely closed and the gasoline should leak to the burner, with my construction it would firstflow into the pocket 49 and be at once drainedaway. to the drain tank 5 I.

Having. explained the. operation of the burner I, and that the tube 2 has communication 60.- and IiI withthe burners I and I I wish now to. state that these burners are not provided with any generators whatever since the generator I8 provides suflicient vapor for the burner I and the burners'l and, I if they are to be operated.

When it is desired to operate either the burner I or I it is first necessary that the burner I be operated. The. gasoline vapor in the mixing tube 2 is conveyed as stated to: the tubes 60 and BI, andthisgasoline vapor is controlled by a handle 68 that carries. at its inner end a valve 69 that controlsthe flow or the vapor from the cross tube 62 to the tube. 60 that feeds it to the burner I. This is a well, known valve and its operation will be understood without further explanation.

A similar handle. 10 has at its inner end a valve similar to the. valve 69 that controls the flow of vapor from the cross tube 62 to the burner I Hence. the operation or these burners can be readi- 1y controlled by these valves and since these burners will not be put into operation until the burner I is in. full operationthere will be no appreciable condensation. of the vapor and hence there will bev no gasoline in these burners to be taken care of and hence they'are not connected with the drain chamber 5|.

Top burner amd connection with oven burner The burner I, itsgenerator, its valve and its mixing tube are all constructed substantially as described in connection with the burner I. However. the. burner I has a special construction differing. from the burner I. In describing this burner attention is. particularly directed to Figures 9,12 and 13. In the first instance I will explain that the mixing tube 2 of this burner I has the extension 4 and projecting from this extension. is a short tubular section II that communicates with the burner and controls the flow of gasoline vapor from the extension 4 to this burner. The burner now being described which is shown in Figure 12 has a wall portion I2 provided with an opening I3 that isin communication with the tubular extension II or the said mixing tube. This opening "establishes communication between the tubularsection II and the burner openings 8|. Also this tubular extension II' has an opening I I which communicates with a passageway I5 and the. passageway I5 establishes communication between the tubular section II and the sub-fire burner 36, which subfire burner is constructed exactly as the sub-fire burner of burner I. Hence the sub-fire is always provided with vapor that plays on the generator I8 for heating it and generating vapor from the gasoline therein. The communication I5 only communicates with the sub-fire and not with the slotted burner portions of the burner I. The opening I3 is controlled by a. valve I6 that has a handle 1! connected with it so that by turning this handle the valve can be opened and closed as may be. required. This tubular connection II is provided. with another opening I8 and this opening is controlled by a valve I9 which is similar to the valve I6 and it carries a handle 80 for operatingthe valve and thus controlling the passage I8.

The burner I also has a pocket 49 and with this pocket 49 the tube 52 is connected so that any condensed gasoline is collected in this pocket and plained in connection with the burner I. Therefore the burner I being in'iull operation and it should be desired to operate the oven burner I, it is only necessary to open the valve 19 when vapor will flow through the passageway 18 to the tubular connection 64 and then to the burner I. Should it be desired not to operate theburner I this can be done by'simply closingthe valve 16. When this valve 16 is closed then the vapor flows through the passageway 14 to the sub-fire burner 36 so that vapor continues to be produced and fed to the mixing tubesZ, 4, tubular section II to the oven burner. By this arrangement of

valves

16 and 19 either the burner I' can be operated independently oi the oven burner or the oven burner lkcan be operated independently oithe burner l' or both burners can be cut oil and only the sub-fire burner for heating the generator will be operating. It is understood of course that the supply of vapor generated in the generator is controlled by the valve 32.

I am aware that it is not new to provide a connection between a top burner of a range and an oven burner and-control this by means of valves. However it is believed to be new to have a sub-fire supplied with vaporindependently 01 either the top burner or the oven burner and to control either one or both burners without affecting the operation of the sub-fire burner since the sub-fire communication isindependent or thecommunication with either the oven burner or the top burner I. V i

By rei'erence'to Figure 13 it is shown that the communication 14 is with'a chamber 15 that is separate from the burner openings thereabove and that the chamber I5 supplies vapor only to the sub-fire burner 36.

Construction of the burners Theburners l, I, I and l have their upper portions comprised of six projecting slotted members 8 l which have their inner ends separated as shown at 82 (Fig. 3) thereby forming in the upper part of the burners a substantially rectangular opening in Figure 6 the sub-fire burner has its upper portion 84 inclined thereby forming an inclined bottom for about half of the width of the opening 65. The inner vertical side or the sub-fire burner 36 is curved inwardly substantially as is indicated at 85 and. the generator 18 is spaced from this curved jportio'n of the sub-fire burner as illustrated in Figure 6. Each of the slotted extensions 8| are also separated as shown at 86 thereby forming right angle assageways across the burner.

These burners therefore produce a burner consistingof six angular separated slotted extensions on their upper side and their inner ends separated by an opening 65 the bottom of the opening closed at one side by the sub-fire burner leaving the other side 81 open throughout the burner 5 for the upward passage of air to assist in the combustion of the gas of the burner. The burner l differs from the burner l in that it has formed therein a vapor communication with the tubular member H of the mixing tube 2, the said com- 1 munication being located on the outer side of the burner. and it also has formed in the front side under one of the slotted extensions 8| a passageway 89 that leads to the valve 16 that is operatively connectedwith the handle 11 for con- 15 trolling the amount of vapor which passes to the passageway 89 between the slotted burner extensions 8I.

Each of the burners l and I has the slotted extensions 8| forming burners consisting of six 20 of said extensions.

From the foregoing description it will be seen that Ihave disclosed a method of generating gas from gasoline which involves supporting the raw gasoline so that the heavy particles are held in 25 solution within the generator whereby there is no substantial accumulation of carbon to interfere with the mechanism for controlling the flow of the vapor to the burner.

My improved burner and new method of va- 30 porizing gasoline to substantially avoid the iormation of carbon and its interference with the mechanism of the generator have been the result of work covering a considerable period of time. Based on a series of tests of this improved method 35 of vaporizing gasoline I find in carrying out this new method that gasoline is supported in the generator tube as illustrated in Figure 7 with its maintained level about at the point a illustrated in said figure. porized and the vapor fills the space b and the heaviest particles are substantially at the surface of the gasoline and the heaviest particles are substantially mixed with the gasoline at the time they are vaporized and by reason of this opera- 4'5 7 to believe that the above is substantially the result of my method here disclosed. Certain it is that the operation of this improved generator has convinced me that there is little or no accumulation of carbon, and that carbon is the result 7 of the vaporization of the heaviest particles of the gasoline.

In carrying out these tests I have operated my generators continuously day and night over a period of 2000 to 4000 hours, which is equivalent 7 to a two to four year period or time that the generator would be used in domestic cooking operations and without any interference whatever from the accumulation of carbon. Heretofore in the usual type of generators, as stated herein,

carbon is formed quite rapidly and substantially 7 The lighter particles are va- 0 tact with any of the mechanism that controls the flow of the gasoline to the burner, except when priming, when the raw gasoline serves to clean and flush the valve mechanism.

It will also be observed that I have discovered a new method of initially priming the burner by a blue flame and preventing the accumulation of condensed gasoline vapor by causing it to escape, thereby preventing what otherwise would be a yellow flame in the initial starting of the burner.

I therefore will claim the above several methods in addition to the mechanisms for carrying out these several methods of generating and handling gasoline and vapor generated from the gasoline.

I have described in considerable detail the improvements but I wish it understood that I do not limit myself beyond a fair interpretation of the appended claims.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. The combination with a gasoline burner of means for producing an initial heating blue flame comprising a burner housing having depending therefrom a sub-fire housing, a generator tube located under the burner and adjacent the subfire housing to be heated thereby, a pressure gasoline supply connected with the inlet end of the generator, a valve mechanism connected with the outlet end of the generator, an air pressure tube having its inlet connected with said supply above the normal level of the gasoline in said supply, its outlet having communication with the said valve mechanism, a manifold communicating with the said burner and the said sub-fire housing, the inlet end of the manifold in communication with the outlet end of the valve mechanism, whereby a blue initial heating flame for the generator is produced.

2. An improved gasoline stove comprising a main burner, a sub-fire burner adjacent the main burner, a manifold in communication with said main burner and also with said sub-fire burner, a generator tube adjacent said sub-fire burner and heated thereby, said generator tube having a fuel outlet in communication with said manifold, a gasoline supply for said generator tube, a valve controlling the fuel from said generator tube to the manifold, and an air pressure supply communicating directly with said fuel supply from the generator tube, both said fuel and air supply jointly fed to said manifold, whereby an initial cold mixture of fuel and air is fed to the manifold and thence to the main burners for producing an initial blue flame, for the purpose set forth.

3. An improved gasoline stove comprising a main burner, a sub-fire burner, a manifold having communication with said burners, a generator tube adjacent the said sub-fire burner and heated thereby, means for producing an immediate blue flame from a cold mixture of fuel and air for preheating purposes, said means consisting of said generator tube, said generator tube having an outlet in communication with the manifold, a valve mechanism controlling said generator outlet, said valve mechanism located out of direct contact with the said sub-fire burner, whereby accumulated carbon is prevented.

4. An improved gasoline stove comprising a main burner, a sub-fire burner, a manifold communicating with said burners, means for producing an immediate blue flame from a cold mixture of fuel and air for initially operating purposes said means comprising a generator tube located adjacent said sub-fire burner and heated thereby and having a fuel outlet, a valve mechanism for controlling the fuel from said generator tube to said manifold, said valve mechanism located apart from and out of direct contact with the heat of said sub-fire burner, whereby accumulated carbon is prevented.

5. An improved gasoline stove comprising a main burner having a vertically arranged air pa..- sage communicating above and below said burner, a sub-fire burner located below said passageway and in communication with said main burner, a generator tube located adjacent to the sub-fire burner and heated thereby, a manifold having communication with said burners, said generator tube having a combined air pressure and fuel outlet in communication with the manifold, a valve mechanism for controlling said air and fuel under pressure directly and jointly from the said generator tube outlet, the parts operating to produce an initial blue flame for the main burner and lighting the sub-fire through the said passageway, the parts operating for the purpose set forth.

6. An improved gasoline stove comprising a main burner, a sub-fire burner communicating with and located adjacent the said main burner, a generator tube adjacent the said sub-fire burner and heated thereby, a manifold having a fuel outlet communicating with said main burner, the generator tube having a fuel outlet communicating with said manifold, a pressure air supply commimicating directly with said generator fuel outlet, a valve controlling said generator outlet whereby said main burner and said sub-fire burner both receive an initial cold mixture of fuel and air and whereby when said cold mixture of one of the burners is lighted the other burner is lighted thereby. i

'7. An improved gasoline stove comprising a main burner, a sub-fire burner communicating. with said main burner, a manifold communicating with said burners, a generator tube adjacent said sub-fire burner and heated thereby, said generator tube having an outlet communicating with said manifold, a gasoline supply for said generator tube, a valve controlling said generator fuel outlet, a pressure air supply fed to the fuel outlet of the generator tube at a point in advance of the fuel outlet thereby directly mixing said air with the said fuel, whereby an initial cold mixture is supplied to the manifold and therethrough to the said burners for initially lighting and heating the said burners.

8. An improved gasoline stove comprising a main burner, a subfire burner communicating therewith, a generator tube adjacent said subfire burner and heated thereby, a gasoline supply for said generator tube, said generator tube having a fuel outlet and an air pressure supply in communication with the said fuel outlet, a

valve mechanism controlling said fuel and air pressure from the said generator outlet, a manifold adapted to receive said mixture of fuel and air from the generator outlet and said manifold also communicating with the main burner and said sub-fire burner whereby a cold mixture as it issues from said burner produces an initial blue flame, for the purpose set forth.

9. An improved gasoline stove comprising a main burner, a sub-fire burner communicating with the said main burner, a generator tube adjacent said sub-fire burner and heated thereby, said generator tube having a fuel outlet, an air 8 V r r 7 pressure supply directly communicating withsaid outlet end of the generator tube for causing a mixture of air and fuel in advance of said generator outlet, a gasoline supply for the generator and a dual valve controlling mechanism for the outlet end of the generator, said dual valve controlling the flow of said air and gasoline therefrom, a manifold receiving said mixture in a cold- V with said main burner, a generator tube adjacent said sub-fire burner and heated thereby, a gasoline supply for said generator, the generator having a fuel outlet, anair pressure inlet tube in communication with the outlet end of the generator tube whereby there is produced a cold mixture composed of air and fuel in advance of its final outlet, said generator-provided with a valve adapted to control the flow of said fuel and air therefrom, a manifold havingan inlet end located toreceive said cold mixture of air and fuel and said inlet end'having an opening to receive a further air supply for said mixture, said mixture conveyed through the manifold to said burners, whereby said cold mixture as it flows from the burners may be lighted for initial and temporary operation thereof, the parts 7 operating as described.

gasoline burner having 11. An improved means producing a cold mixture of fuel and air "heated thereby, a manifold having its inlet adjacent said generator outletto receive fuel therefrom, ,said manifold also communicating with said'burners, a dual valve construction in the outlet end of the generator, an air pressure supply communicating with the outlet end of said generator tube, said dual valve controlling the flow of air thereto and the passage of fuel and air therefrom to produce a cold mixture, said cold mixture flowing through the manifold to said burners, whereby "a blue flame from said cold mixture cantbe ignited for producing a temporary heating flame, the parts combined for the purpose set forth. 7

12. An improved gasoline stove comprising a main burner and a sub-fire burner having communication with the main burner, a generator tube located adjacent the sub-fire burner and directly heated thereby, the generator tube having a fuel outlet located at one end thereof and extending at an angle to the said generator tube, a valve for controlling the fuel outlet located also at an angle to the said generator tube there- 7,5

by placing the valve out of direct contact with the heat of the sub-fire burner, a manifold communicating with said generator fuel outlet and g also with said burners, whereby the valve mech' anism is located out of direct contact with them heat of the burners and preventing an accumulation of carbon.

13. An improved gasoline stove comprising a main burner, a generator tube under said main 7 burner having an outlet, said main burner havl5 ing arhollow downwardly projecting portion located at one side of the said generator tube the lower end of said hollow projection provided with burner openings opposite said generator tube thereby constituting a sub-fire burner, a manifold having its inlet end receiving gasoline from said generator outlet, said manifold also communicating with the main burnerand through said downwardly projecting hollow member with said sub-fire burner, the parts adapted to operate as set forth.

14. An improved gasoline burner supplying'a temporary cold mixture of gasoline mist and air for producing an initial heating flame, comprising a main burner, a sub-fire burner thereunder 80 and communicating with the main burner, a generator tube located under said main burner and adjacent the sub-fire and heated thereby, a manifold receiving fuel from said generator tube and in communication with said burners, a valve controlling said generator fuel to said manifold, whereby a cold mist composed of a mixture of gasoline and air'is fed to the said manifold and through it to said burners for furnish-' ing an initial blue flame for heating the said 40 generator tube, the parts arranged as described.

15. A construction for producing an initial blue flame from a cold mixture of fuel mist and air under pressure, comprising a main burner, a sub-fire burner under. the main burner and in communication therewith, a generator tube under the main burner and located adjacent the said sub-fire burner and heated thereby, said generator tube having a fuel outletand also an inlet for the air pressure, means for supplying said air pressure to the said generator tube outlet, a valve controlling the said generator outlet thereby producing a mixture of mist and air, a manifold receiving the said mixture of mist and air, the manifold having communication with 5 the said burners, whereby a temporary initial blue flame is produced for initially heating said burners.

I. VERNON BRUMBAUGH.