US1832503A - Carbureting apparatus for lighters - Google Patents

Description

Nov. 17, 1931. s. RAsMUssEN CARBURETING APPARATUS FOR LGHTERS Filed June '7, 1928 Patented Nov. 17, 1931 UNITED STATES 'SOPHUS RASMUSSEN, OF ALBERT'VLEA, MINNESOTA CARBURETING APPARATUS: FOByIqIGjI-ITEBS Application filed June 7, 19,28. Serial No. 283,640.

This invention relates to a stove adapted to use liquid hydrocarbon fuel, and particularly to a lighting device for such a stove. Such stoves are now used in large numbers and it has heretofore been necessary to start said stoves by heating a vaporizingmember comprisedl therein by means of a priming charge of fuel, or by means of a'separate torch. This lighting operation has been a lo necessary preliminary operation to light the main burners of the stove and` has been one of the objections to such stoves, It-.is desirable to have a stove structure which can be lighted at once by an ordinary match withwV out the use of a torch or other separate means by a priming device of the vaporizing member.

It is an object of this invention, therefore,

to provide a simple and efficient structure of a stove using a vaporizing fuel, by means Qf which the stove can be lighted with an ordinary match without any preliminary heating of the vaporizing member by priming or by a separate means, such as a torch.

It is a further object of the invention to provide a structure of stove using liquid vaporzing fuel having a burner and a- Vaporizing member for said burner, together with means for furnishing a combustibleI mixture to said burner for heating said vaporizing member, whereby said` burner can be instantly lighted with an ordinary matchor other lighting device. v

It is a further object of the invention to provide av structure of stove using liquid vaporizingfuel comprising one orino're main burners, a vaporizing member therefor, a fuel tank adapted to contain the fuel under pressure to which said vaporizing member is connected, and means connected to said fuel tank adapted to receive and discharge a combustible mixture which can be instantly lighted to heat said vaporizing member.

It is more specifically an object ofthe in vention toV provide a structure of stoveusing liquid vaporizing fuel and having `one or more main burners, a vaporizing member for said burners connected toa fuelV tank `adapted to contain a fuel under pressure, austarting burner of the retort type for heating Vsaid vaprorizing` member, and means connected to said'starting burner and fuel tank, adapted to supply a charge of a combustible mixture which can be instantly lighted to start said auxiliary burner. v

These. and other objects and advantages ofthe invention will be fullyset forth in the following description made in connection with the accompanying drawings, in which like reference characters refer to similar parts throughout the several views and in whichzi Fig. 1 is a partial plan view of the stove having, the invention applied thereto, as indicated by the arrows;

Fig. V2 is a vertical section taken on line 2)-2 of Fig. 1 as indicated by the arrows;

Fig. 3 is a vertical section taken on line 3-3 of Fig. 1 as indicated by the arrows;

Fig. 4 is a view similar to Fig. 3 showing a modification; and V Fig. 5 is a vertical section taken on line 5-5 of Fig. 4, Figs. l and 5 being shown on an enlarged scale.

Referring to the drawings, a stove. isshown having a frame comprising the top plate 10 and the supporting frame 11 to whichv said top is secured. A fuel tank 12 is shown, disposed at one end of the frame 11 and secured therete by straps 13 extending around the tank and secured to said frame, One of the main burners ofthe stove is shown as 14, connected to a mixing chamber l5 a portion of which is shown and which is secured to the top plate 10 by the screws 16. A vaporizing member or tube 17 connects with mixing chamber 15 at one end and projects through a frame 11 at one end, the same being connected Vto the tank 12 by a small tube or conduit 18 which is connected to a fixture 19 secured in tank 12. Vaporzing tubeV 17 is controlled so as to be opened or closed and supply or shutoff fuel to mixing chamber 15 respectively, by

a valve having an `operating hand wheel 17a.

Saidlixture co'mprisesa gauge 2O adapted to .n

'show the pressure thatthe fuel is under in tank 12 and is also provided with a valve operated by hand wheel 21.

' An auxiliaryV burner for heating the. va-' porizing tube 17 is provided, and whlethis Yso burner may be disposed in various places, it is shown as disposed between mixing chamber 15 and burner 14 and indicated generally at 22. rEhis burner comprises a mixing chamber 22a illustrated as a curved conduit having an open upper end into which projects a small vaporizing tube 226 connected to a valve body 24 having therein a valve 25 for opening and closing tube 226, which valve is operated by the hand wheel 26. The valve 'bod7 24 has a fiange thereon connected to the frame 11 by headed and nutted bolts 27 and has a depending lug in which is secured and from which projects a rod 28 forming a support for mixing chamber 22a. The member 22a has a lower opening 220 disposed below vaporizing tube 226 and vaporizing tube 17, from which the lflame of said burner projects. The conduit connecting mixing chamber 15 and burner 14 has a pan 23 therein, adapted to catch any overflow from burner 22 and return the same to the mixing chamber 15.

A small tube or conduit 29 connects valve body 24 to a valve body or iixture 30 secured to the bottom of tank 12 by being threaded into a plug 31 secured to and extending into said tank. Valve body 30 has a passage 30a extending therethrough, controlled by a valve stem member 31a which is in turn operated by the hand wheel 32. The stem 31a is packed by a cap 33 threaded onto body 30, adapted to compress packing 34 against the end of said body and about said stem. It will be noted that stem 31a has a valve portion 316 engaging a portion of passage 30a as the valve seat. A small tube 35 is threaded into the top of body 30 and in the portion extending through plug 31, which tube 35 has an open upper end which is disposed in the air space in tank 12 as indicated in Fig. 3. The tube 35 has a small aperture 35a adjacent its bottom and adjacent member 30 which is disposed in the gasoline or fuel in tank 12 and affords communication of tube 35 with said fuel. Aperture 35a is surrounded by a fine screen 36 shown as cylindrical in form, surrounding a portion of valve body 30 at its lower end and a cylindrical portion 37a of an upstanding member 37 at its upper end, which member 37 fits tube 35 and is secured to body 30.

In the operation of the structure described, when the stove is not in use, all of the valves describet are closed. The fuel is thus shutoif from both the burner 22 and burner 14 and vaporizing tube 17. When the stove is to be lighted, valve wheel 32 will be turned, thus opening passage 30a and valve wheel 26 will be turned to open communication with the burner 22 and small vaporizing tube 226. A small amount of fuel passes into tube 35 through opening 35a and when the said valves are open, the pressure of air in tank 12 forces this fuel through passage 30a through tube 29 to valve body 24, and through tube 226.

This passage of this air and fuel forms a combustible mixture, which mixture is discharged at the end of tube 226 passing into mixing chamber 22a, and the same can be at once lighted at the opening 22e. t is not necessary to preliminarily heat the Vaporizing tube 226, but the burner can be lighted as soon as the valve controlling the same is opened. rThis initial charge of combustible mixture furnishes suiiicient flame to heat the vaporizing tube 226 and as fuel continues to ilow through this tube from tank 12 through conduit 29, the burner will. continue in operation, thus heating vaporizing tube 17. 1`he burner 22 1s only burned for a very short period, after which valve wheel 17a is operated to permit fuel to pass through vaporizing tube 17 to the mixing chamber 15. This fuel is vaporized, mixed with air in chamber 15, and is delivered to burner 14 which can now be lighted. After the main burner 14 is lighted, valve wheels 26 and 32 are again turned to close valves 25 and 31. The stove now continues in operation until it is desired to shut on the main burners, which is done by closing the vaporizing tube 17 by turning hand wheel 17a. It is thus seen that no vaporizing member has to be heated by holding a torth thereunder, or holding a match thereunder, and it is not necessary to use a small separate supply of gasoline to be ignited under th yaporizing tube to heat the same. The burner 22 can be instantly lighted and continued in operation for a very short period, after which the main burners can be lighted.

In the modification shown in Fig. 4, the structure is the same as described, except that conduit 29 is connected to a valve bodyl or fixture 38. rhis body has a passage 38a therethrough closed by a valve portion 39a on a valve stem 39 threaded in valve body 38 and operated by valve wheel 40. The valve stem 39 is packed by a cap or shell 41 threaded thereon and which compresses packing 42 against the end of body 38 and aoout valve stem 39. The valve body 38 is secured to the bottom of the tank 12 by being threaded into a plug 44 iitted in said tank and extending thereinto. A. tube 43 is secured `in the top of body 38 and has an open upper end disposed in the air space in tank 12. A passage 386 extends downward in member 38 and communicates with passage 33a'. Said passage 336 communicates with passage 38a through the sinali opening 380 and valve stem 39 has a reduced portion 396 extending from the valve portion 39a and having a conical end adapted to project into opening A plug 4G is threaded into the top of member 3S, having a passage therethrough con1 municating with the passage 336, which plug has a reduced portion at its upper end surrounded b a screen cap 45 which is of cylindrical orm and fits on plug 44.

lldu

In the operation of the device shown in Figs. 4l and 5, when the stove is to be started, valve 39a will be opened by turning hand wheel 40. The valve 25 will also be opened by turning valve wheel 26. Gasoline willA pass into passage 38?) through the screen 45 and to the valve 39a. Then this valve is opened, this gasoline will be forced out through passage 38a by the pressure of air in tube 4:3 and this air passing through the tube with said gasoline or fuel will form a combustible mixture which will be discharged into the burner 22. This burner therefore can be lighted at once with an ordinary match. After the combustible mixture is consumed, the gasoline or fuelcontinues t0 flow from tank l2 through passage 385 so that burner 22 continues in operation. This burner, as stated above, burns only for a short period so as to heat vaporizing tube 17, after which hand wheel 17a is turned to admit fuel through the vaporizing tube 17 to the main burners. The main burners are now lighted and valves 25 and 39a then closed. The main burners are now continued in operation as long as desired and will be extinguished when no longer needed, by turning valve wheel 17 a. The screens 36 and 45 prevent any solid or foreign matter entering the small passages 30a or 38?) respectively. The portion 380 with its pointed end keeps the opening between passage 886 and 38a open.

From the above description it is seen that applicant has provided quite a simple and efficient structure by means of which the stove can be instantly lighted without the preliminary heating of any vaporizing member. The objectionable operation of priming the stove or preliminarily heating the same by a torch is eliminated. The improved structure is quite simple, involving few parts, and the same are easily manipulated. The device has been amply demonstrated in actual practice and found to be very successful and eiicient.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope of appli- -cants invention, which, generally stated, consists in a device capable of carrying out the objects above set forth, in the novel parts and combinations of parts disclosed and defined in the appended claim.

W hat is claimed is A lighting device for a liquid hydrocarbonV said valve body and passage and projecting upwardly in said fuel tank, having an open upper end disposed in the air space in said tank, said tube having a small aperture therein adj acentsaid valve body, a tube connecting said valve body and passage to said auxiliary burner, and a valve for controlling said auxiliary burner.

1n testimony whereof I aiiix my signature.

SOPHUS RASMUSSEN.

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