US2046408A - Gasoline stove - Google Patents

Description

' July 7, 1936. Q E PICKUP 2,046,408

GASOLINE STOVE Filed March 24, 1933 I rwenof Cena/ye /O/'U/fa f? y QW Patented July 7, 1936 GASOLINE STOE George E. Pickup, Newark, Ohio, assiglnr to The Wehrle Company, Newark, Ohio, a corporation of Ohio Application March 24, 1933, seriaiN-i. e6/2,406.

7 Claims.

The invention pertains to gasoline cook stoves, and has more particular reference to a thermostatically actuated valve means for cutting off the supply of liquid fuel to the generatorin case of the accidental extinguishment of the burner.r

The primary object of the invention is to provide a thermostatically actuated valve means of the character indicated which is simple in construction and certain in its operation, and otherwise. of a very practical character.

- A further object is to provide arvalve for controlling the fuel supply,r winch is arranged for actuation by a thermally responsive element associated withv one of the burners and located inr a relatively cool zone in the burner box, thereby avoiding difficulties on account of the accumulation of carbon in the valve.

'I'he objects of the invention thus generallyy stated together with other and ancillary advan- 20. tages, are obtained by theconstruction andarrangement illustrated in the accompanying drawr ing,V in which: v

Figure 1 is a fragmentary top plan view of a burner structure for gasoline cook stoves and em- 25. bodying my invention.

Fig.` 2 is a vvertical sectional View on an enlarged scalertaken approximately Yin the planeV rod 8, andA in constant communication with the'v wmanifold is a generator` burner Sin'theform of an elongated tubular member disposed `beneath thefgenerator 1 and connected at its rearA end with an angular arm I0 of the manifold. II designates' a fuel supply pipe leading from the up- 4.5- per portion of the usual supply tank (not shown) and connected with the manifold for supplying fuel vapor thereto for starting purposes in a well known manner. At the point of discharge of fuel vapor into the manifold from the pipe l Ia, Seco ondary air mixing device I2 is provided.

-The generator 1 comprises in thel present in stance primary and secondary tubes I3.` and I4 arranged-in parallel relation between` the two main burner sections 3 and communicating with 55 eachother at their forward endsvthrough. a t-z..

(Cl. 15S-42.4)

ting I5. Fuel. in liquid-form issupplied to the rear end ofthe primary tube I3 by meansfofV a pipe I6, andfuel in gaseous. form is delivered by the secondary tube I4 into Vthe gooseneckv 6 of the manifold. The tube I4 is for this purpose 5r equipped with the usual needle valve (not shown)V which is disposed in the discharge end of thetube and operated by a rod I'I extending through the tube and Athrough the tting ,I5 at thefzforward end thereof. AThe construction of the generator 1o G thus generally set forthjforms no part of. the:` present invention, but 'is fully disclosed -and claimed injmy copending application Serial.No. 662,407, filed March 24, 1933. Y

As shown clearly in Fig. 1, the supply pipe I6 15 extends laterally away. from the rear end of the -I primary tube I3 and thence forwardly for connection with a control valve I8, which in accord. ance with my invention, is arranged for thermo-1 staticlactuation by a thermal element in the form of a rod'ISdisposed transversely of the gener-j;` ator and having one end interposed betweenthe forward ends of `the generator tubes and the;r forward one of a plurality of grids 20 in the generator burner 9. Thus, 'the valve 4I8gis locatedk 25.Y remotely from the generator and associated burn- Y ers within a relatively cool zone in the burner box of whichk Ilhave shownat A only a portion of the front and side walls. Thus the Vvalve is not subjected tothe intense heat issuing fromV the burners. In this latter connection, I have discovered thatl when the controll valve lis are. ranged" in vclose association v with` the generator and .the burners, difficulties ariseV on account oi.'V accumulationofwcarbon in the valve. v V,35- Referring now to Fig. 2, the valve I8 come; prises a body or casingf2l havingA a valve'member 22 therein controlling Atheiiow: of fuel to Y the pipe,4 I6 which is-,connected to one side of the valve casing in communicationv with alongituv dinal passageV 23 extending through the'casing. Fuel in liquid formis supplied to one end-of the,- casing A-by vmea-ns of ra pipe-24 leadingY from the fuel supply tank, (notsho-wn)` and` connected toY the'valve casing by means'of -a coupling25 whichl- 45 may be equipped with a strainer A26. The valveg22: has a'stem 2-1 of adiameterzsmaller than the diameter ofthe passage 23 at jthe point of communication-with `the pipe I6, the ,casing having, an outlet port 28 with which thepipe I6 is conf: 50 1 nected.; v .Ty The :thermally responsivel valve actuating: rod` I3 extendsthrough theA end of the valve casing 2i opposite" the supplvpipe 24, the casing. beingt proyidedfor this purpose; with a suitable packing..-

gland 29. Within the casing the rod lllisV made rigid withthe valve stem 21. The opposite end Vportionrof the rod I9 overlies the forward grid 20'of the generator burner and is fastened inran Vupstanding arm 30 of aestationary bracket V3|.

Thisarm 30is spaced a short distance from'the .side of the burner'grid 20 opposite'the .valve lil,l

Y and rod Vl!) has its end portion threaded .for erigagement with anV internallyk threaded aperwre f 1nY the am for adjusting purposes. 1A nuts:

rigid'withthe rod facilitates the adjustment of` the latter in the bracket arm 30, and alock nut",v 331s preferably provided on the free endd.the

f rod. The bracket 3| extends transversely with l respect tothe generator andprovides'a' support for the forward ndof' thegenerator' Vburner 9 aswell as for the rod. At. the end op-` posite the arm 30-thebraclethas anapertured' Y i arm 34 encirclingthe valve casing and fastened thereto asV by means of a nut 35. Thus tliebrack'- `et serves to; maintain r. the .valveg ami` the anchored endof the rodliB 'ina xed relation. .L It will.beimderstoodizhattherod 19115 maden! 1 a materia-lwhich is adaptedlto expand andcon- 4V25;, traetfin ,an Vemiwisei direction. aeeerdmg te.

whether or not fthe Vgenerator"burner 911s in op.-

tionduring which fuel `is supplied bi/'thelpipe H,

35..,the rod lllbecomeslhea'ted asan incident-to the heating of thegenerator tubes.` .1'I11us,'asthelatter are :being conditioned Y for vthe recepiion of 5 Vliquid fuel fromthe pipe'16,.the rod- I9 is exfpanded to open the valve |8` and permit the supf40 vplyoiliuel tothe generator tube 13;! Conversely,

Vif' forfany reason, thegenerator Vburner should! Y become extinguished duringf the operationeel.' 'thej i stoveglthe rod iil-willcool oierapidly5 and!clothe;V the valve I8, thus interruptingthe supply of i'el VV A tothe* generatorto` avoidf the danger Vfrornfem plosion.. 1 'i facturing standpoint, ait-'is' advantageous because Y 50. :it permits rofthe location Vorfthe* oontroli valve within a relatively coolzone and thus avoidediiii-` culty on account-oftheaccmulation otscarbon in the.' valve. o Meneovegi; 'r have'ffeundjthae 'in n practice, the Vsupply of fuel to the generator Akle 55 reliably controlled in amannersuchas'to insure Y l safety of operation.' Y

`flclaimfas rn'yinventionrfV Y e@ Y A'=1. A' Vburner structure for-gasoline stovesfcoml prising in combinationja Vtubular generator;a;L

0 burner arranged to supply heat` to said generator,' means ffor supplying fuel to said generator in-V' VVcluding a' control' valve `having -a movable valve l member', ani elongated supporting bracket ex-1 tending jtransverselyfofVV said generatorand sup-g porting said'valve Vatar-point' remote from the burner;` and thermallyV responsive means for operating said valve member including arodhaving one endri'gid with the` valve member and'its other endflxed onsaidbracket on.the'endoppo-`Y e #Offsite theva1ve-rwx. 2. A burner. structure for gasoline stovesgeo'mj prising a burner Yrianiifold', anfelongatedtublar generatorv having one end discharginglntosaid manifolda'generatorj burner "in the form 'of an* j elongated. tubular.. member connected withv 'saldi n the burner to open Vsaid valve, and onzthe open saidvalve. tir' l.. Y 6.Y In combinetonrwithrb ner-meansqlpgyaee e Ya. :fuel delivery system including .efconduit tot; f

delivering liquidfuelta thejz'opposlteaadoteaid, Y`

i valve inzsaid4 delivery` system; iri`xatr'tliilfinY withA said `conduit .separate positionedrelative to'snd` generatingltubndf: i said burner-.means so thatthe valve Awill 'remain't eoei endesubstannanrnmrneeted. by hmmm. j

manifold and underlying said generator and have.L

ing a burner grid at the end opposite ,the mani-fV fold, an elongated bracket secured -to the for- 'Y ward end of said generator burner transversely thereof, means -for supplying fuel. tosaidgens Y erator including. acontrol 'valve securedon one end ofsaidV bracket a substantialdistance to, one

side of said burnennd temperature'responsive means fer Voperating seid; valve including en elongated thermal element "disposedbetween said burner grid and said generator and securedon theend of the bracket opposite the valve. 3. VInoombination with aburner structure comprising, a tubularl generating member communi said generator including a yvalve disposed a substantial distance Iromsaid burner andgenerat-- `ing member, arod withpone end operatively con#V 'Y Vneoted with said valve and its other endV inter- 20 being adapted toexpandfwlienfsubjectedto heat Y" fromrthe burner to open "saidvalvea44 l -f I 1' Y 4. InLaidevice ofitl-ie'charimter'fleseribedgtheir* f combination 'with a burnergf'of a senerwrm;

Y, prising al tubular*membercommunicatingwitn q the burner and positioned forbeing by, a valve controlleduel supply tor said generator including avalve disposed vlaterally icono; Y

side of the'generator, astationary bracket the opposite.v sidel oi.' the generator, ;a4rod.1withf `one end operatively lconnected with., saidxnivei and. .itsVV other end extendingl betweendisaldl gener Y ator and said burner andlvingfascsewthr'eadedi Vengagement with said brackets.saldiv mdl being e adapted to Vexpand when isubjec'ted. to heal: lxnornfV rod for turning'. itv yto djust'said .valvel membma V5. In a structurelof thecharacter'describedf n k n ,f .7.. e e heated therebya liquid'fuelzfeonductin'g-/systan It will be observed that'lwhilezoons*t'ructlon-` employed is simple andinexpensive a manu# Vi" nected with said`viali/einmalwith onli/:aimait 't portion of itsV other-fend extending between the." 'Y

. generator and burner,` fand stationary;y support-,-

ing means includinsi, Dartgxedly ,suxiporiilm.tiel

said casing andaanother part onf'the opposite; side of fsaid generator: andV flxedly'supporting. the said Vother of said rod,- wherebrjfexfr: `pansio'n of said mdwill move saidone, endzandf coporizing y:ligand `fuel.,l stove, in; elongated igen-j; erating tube 1 positioned eto be; yheatedbf burner-means, amanifold at one-,endet saicrtubeV l and. in.- communicatirm v therewith; for 'conduct-Q5? ing vaporzed Afuel mixtureto said burner means generating tube/,wherein i the fuel: isrkheateliziandf vaporized r before.gpiasszi'ge.V tol said f-imanifold;

said burner means or from said tube, a thermally responsive rod extending transversely of said generating tube with a small portion adjacent the inlet end of the tube opposite said manifold arranged to be heated by said burner means, one end of said rod on one side of said tube being operatively connected with said valve, and means including a part for supporting the latter end of said rod forY longitudinal movement and a part on the opposite side of said tube providing a rigid connection for the remaining end of the rod, whereby said one end of said rod will be moved longitudinally upon expansion or contraction of said rod and respectively open or close said valve.

'1. In combination with a burner structure for gasoline stoves comprising an elongated tubular generator communicating with a burner spaced from said generator and in position to heat the same, a fuel supply conduit, valve means including a body having an elongated passage extending therethrough with the end of said conduit connected to the inlet end of said passage and an outlet port communicating with said passage from one side of the body, a rod of ther'- mally responsive material having one end extending slidably into said passage through the extremity thereof opposite said conduit and its opposite end extending with only a small portion in proximity to said generator in such relation as to be heated by the burner, stationary means including a part supporting said body at a substantial distance from said burner and generator and another part lxedly supporting said opposite end of said rod, and a valve member operable by the end of said rod Within said passage and disposed between said outlet port and the inlet end of said passage to maintain said passage normally sealed against liquid iiow when said rod is in contracted condition and opening said passage to permit liquid ow when said burner is lighted and said rod expanded. 20

GEORGE E. PICKUP.

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