US1242487A - Gas-burner. - Google Patents

Description

v O. SPAHR.

GAS BURNER. 'APPLICA-non man omai, |913.

1,242,487. 'Patented 0ef..9,519 17,

TUN-TTR@ STATES PATENT @TTTQEQ *oTTosPAHitoFPnInADELrHiA, yPENNsa/ut.'validita,'assIefNoia Tov-srnnusn eas inoN VG0.,for.ummmELM-1:11a, PENNSYLVANIA; n coR-Pesa-ATIQN or ruint-sari.1v,ANIA,v

'1 ens-BRNER.

Tor-@ZZA wh'mizbz't mag/concern: y v

Be'fitknown thatfI, OTTO SPAHR, a cit1- vSpecicaton of Letters Patent. AAppiication,meaDecember si, 1913; .seiiaiNasoafea atentea eene, i917.

tending lengthwise thereofas shown in "Fig;

. My invention rela-testo gas burners and t V,more especially to:y gasrbu'rners for selffheating gas ironsandthe'likeandhas for' its object to produce asuperior burner'` of this kind, one whichxwillinsure complete combustion, without odor for loss of heat, of the i, gas used andV which will. be suitable for use -with lanykind ofgas, :whether natural or l manufactured. It is a further object of my Y drawings.

structure. that the amef jets issuing'from the flame apertures thereof will be affected to a Nminimum degree by excess air in the gas, by external atmospheric ydrafts or'V by my invention shown in: 'the-'accompanying with my improvement applied thereto ;V Fig'.

2 is a cross-section 'thereof on the'line 2-2 f of Eig 1; Fig. 3 Vis a rear endel'evation;

7 lisV an: enlarged cross-section-ofx the ner as lby v means of a locking lever 13. The side walls of the body may also be cut awayl burner and Fig, f5Y is a 'detail view of a slightly differentY form 'of burner. n lInthe drawings A10 represents'the hollow body of the iron which maybe provided drawings' Fig-ure 1 is a side eleva- `tionY of algas :iron with parts 1n section and i Y1.. thel form illustratedv in F ig's: '1,2l and'3, they burner comprises a tube18 having'fits forward .fendv externally screw-threaded' Y as indicated at 19l and its rear end internally screw-threaded to receive the exfternallyj screw-threaded` end of the Vmixing tube 120. 'lThe said.- mixing tube Khas its lfree Vend provided j with 'thefcustomary .nipple2l having the usual air` inlets 22and upon which the usual customary fexible- '-hose orv tubel for connecting theiro'n with a ."s'lipp'ed.,`- A locknut 23 is located# on the .invention to produce such a gas iron burner K externally screw-threaded 'end ofthe tube 20and is.arranged to'be screw-ed into engagement with the end of the tube 18u/hereby thesai'dtubes 18 and 20 are firmly locked with the usual cover'y 1l movable relatively thereto 'and having a the customary operating handle 12 ofY anyl desiredvtype' for manipuflatingthe iron, the said cover being locked in position on the body in any suitableman- Y at the top to' form 'Ventilating `apertures 14;V

along the sides andthelrear wall 15 may be similarly cut away at the top to form 'ven- `tilating,apertures 15*V at the rear end 'of' the.

iron. 'Asshown thefbody' 10 is provided with air inlet channels 16v which. extend through the solid bottom' 10a and' have? their f inner ends communicating with. .the interior of the body in `any suitable mannery as' for instance throughthe medium of a well or -recess 17 formed in said 'bottom' 1()a and exj,

together. The'tube 18 is formed with a *double series of Aradially extending jet apertures "24` located on yopposite s'idesyof the longitudinal :center line `of said tube 18 and being of relatively large size and having their inner-ends covered Vwith netting, gauze, or the like25.y Asshown in the illustrated example `4the netting vor gauze "25 is in; the-form :of a continuous tube which' isvfinserted :into v'the'tube-18 and is :held in position .therein in any 'suitable man- 'nen asfby friction, itbeing understoodthat other forms ofy netting or gauze-may be used,1 or that the apertures- 24' may 1 be separately covered, with individual? sections of netting or gauze :onthe inside ifthis should be desired.y l'

iWhen lconnected Vvwith `the body the tube 18 of the burner extends 4through aan opening 4126 located Vinthe rear Vwall 15- andhas its screw-'threaded forward end19screwed into a screwt'hread'ed recess 19a formed inthe forward end of said body. The jet-apertures'24 arefthusfall located within the body asshowninIFig. 1, and themixingtube 20 .is'locat'ed exteriorly thereof andlis preferably inclined relatively to said body when viewed' from'the front or rear end. l. The opening'26and the recess 19a are so located 4Vthat the tube 18 will be located above and in registryl with the well v17 orthe like, when the burner-is connected withtheb'ody as described above. In addition to. this; thev rear wall 15 is `providedy with an enlarged recess 26?L 'whichsurrounds'1 the opening 26 and is adapted to; receive the lock nut23 when the burner'j is in f its operative position. AWY/'ith and around which the air entering through the channels 16 into the well 17 or the like is forced to pass, thus insuring perfect comi bustion and a maximum heat effect with a minimum of fuel. rlhe said large flames are caused to firmly adhere to the burner tube 18 even with said large apertures 24C as the interstices of the netting 2 5 are smaller than said apertures and said netting thus provides an effective foundation or hold for said iames and maintains them in the desired operative relation to the burner. In addition to this the roots of the various flame jets will belocated closely adjacent to the netting or gauze 25 and will in consequence be protected by the walls of the jet apertures 24 so that the said jets of flame are not likely to become extinguished andare aected to a minimum degree by excess air in the gas, and by external atmospheric drafts or the like. The said gauze or netting also serves to filter the gas, thus resulting in a clean flame and making it possible to use the iron with either manufactured or natural gas without change or substitution and furthermore absolutely prevents backfire. The construction shown and described also permits use-of the iron with any type of gas at any pressure without necessitating any special adjustment or the substitut-ion of any special parts. By constructing the netting or gauze 25 in the form of a tube or the like the same may be manipulated to bring different parts thereof into registry with the jet apertures 2e so that as one part of the netting or gauze becomes clogged or unserviceable, another clean part may be adjusted over the said apertures, thus doing away with the necessity for frequent cleaning or renewals of the gauze or netting.

By screwing the tube 20 into the tube 18 a shoulder 2Oa is formed in said burner tube 18 against which the one end of the netting, gauze or the like 25 may abut. With this construction the inner surface of said netting or gauze 25 is substantially flush with the inner surface of the tube 20 so that a free path for the fuel into said burner tube 18 is provided. In other words the end of the netting, 25, with this arrangement does not form an obstruction in the path of the fuel and in consequence friction is reduced to a minimum. An additional shoulder 20b may be formed in any suitable manner in the upper portion of the tube 20, the dianieter of the combined tubes 18 and 2O thus increasing in successive steps from the inlet end on and still further insuring a proper forward travel of the fuel by removing all obstructions from its path and consequently reducing frictionto a minimum. itiqaerience with burners of the type included in the present case has shown that the fuel as it enters the burner tube when the latter is cold will force and compress itself into the extreme forward end of the burner tube in Fig. 1 thus ordinarily tending to exert a back pressure at least at the first few apertures 24:. `With the present construction, as the burner tube becomes heated and thereby heats the accumulated fuel therein, the said fuel expands rearwardly alone` the entire tube 1S until it:

reaches the vshoulder 20a through the inter-- Thisv stices or meshes of the gauze 25. shoulder in combination with the forward portion of the iron which closes the forward end of the tube 18 confines this expanded fuel and as new fuel is continually added and becomes similarly expanded, preserves an equal pressure or in other words equalizes the pressure at all of the apertures 24. Perfect and uniform flames are in this manner provided at each aperture 24 and result in a uniform or equal heating of the iron throughout.

In the burner shown in Fig. 5 the tubes 18a and 2OC are made integral or in one piece instead of separately as are the tubes 18 and 2O in the first form, the two forms being otherwise identical.

Various changes in the specic forms shown and described may be made within. the scope of the. claims without departing from the spirit of my invention.

l claimz- 1. A burner for self-heating gas irons and.

- the like comprising a horizontal burner tube having jet apertures located only in its lower half, a mixing tube arranged to screw into the one end of said burner tube and forming an annular shoulder therein, a lock-nut adapted to engage the end of said burnertube whereby said burner and mixing tubes are locked together and'foraminated means in said burner tube covering the inner ends of the said jet apertures and abutting against said shoulder whereby obstruction to the flow of the fuel is prevented.

2. A self-heating gas iron comprising a hollow body having an opening in its rear wall and an enlarged recess surrounding same, an apertured burner tube extending through said opening into said body, a mixing tube arranged to screw into one end of said burner tube and a lock nut adapted to engage the end of said burner tube whereby said burner and mixing tubes are locked together, said lock-nut being adapted to be re ceived in said enlarged recess whereby the 4said lock-nut is protected against interference.

3. A self-heating gas iron comprising a hollouT body having an opening in its rear wall and an enlarged recess surrounding same, a burner tube extending through said opening and having a double series of radi- .ally extending jet apertures, a mixing tube arranged to screw into one end of said burner tube and forming an annular shoulder therein, a lock-nut adapted to engage the end of said burner tube whereby said burner and mixing tubes are locked together, said lock-nut being adapted to be received insaid i enlarged recess whereby the vsaid lock-nut is protected against interference and foraminated means in said burner tube extending over the inner ends of al1 of said jet apertures.

In testimony whereof, I have hereunto set my hand in the presence of two subseribing witnesses.

' OTTO SPAHR. Vitnesses :y

JOHN A. KEHLENBECK, FRED A. KLEIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

` Washington, D. C.

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