US1343403A - Torch - Google Patents

Description

l W. F. PAGEL.

TORCH. l APPLICATION FILED JULY 2 6, 19|?- 1,343,403. Patented June 15, 1920.

I 2 SHEETS-SHEET I.

. @L 4 j@ z/ f Ii Y uw aged l WW E749 g- A w. F. PAGEL.

TORCH.

l APPLICATION FILED JuLY'26.1919.y

1,343,403. Patentd June 15, 1920,

2 SHEETS-SHEET 2.

- UNITEDSTAT WILLIAM PAGEL, or

TORCH.

, Application nieu July 2c, 1919. serial No. V313,54*?.

My invention relates to improvements in i blow pipe torches, particularly thaty .classV of torchesV known as plumbers blow pipe torches. l

The fuel for such torches has heretofore been limited to gasolene and particularlyu gasolene of good quality, viz., easily vapor.Y ized. It is" well'known that the grade' of available gasolene is gradually dropping down and it is practicallyimpossible to successfully operate the ordinary plumbers blow pipe torch with this lower grade gaso-V lene, due mainly to the impossibility of ap'-` plying sufhcient'heat 'to the fuel as it approaches the outlet orifice'4 to cause it to properly gasify upon .escape into the flame; Another difficulty which is aggravated by the low grade fuel'rnowavailable is that as commonly constructed 'the adjusting valvev of thetorch becomes lso 'highly heated' as to deposit carbon upon the vvalve surfaceand in shutting offsu-ch a valve `the partsV are" liable tobe distortedfto such an extent as to preclude proper adjustment ofthe flameV or the proper closing of the-shut off. n

Still another detrimental featureA of the plumbers -blow pipetorches now commonly used is that as commonly constructed the air pump, for placing` the liquidA fuel/under pressure forlifting it to "the burner, is connected to the casing ofthetorch by a connection which permits more'or less]` gasolene toleak, this-is a source of consid-Y erable annoyance and waste andit tively expensive to produce; Y.

In the torc'hof my inventionI provide simple means for applying Vsulicient heatlto the fuel, as it approaches the' burner'oriice, so that I am not only enabled tosuccessfully make use' of the lower gradesof4 gasolene, but I am enabled to make successful use of kerosene -Vas a fuel for such torches, which, so far-as I am informed, has not beeiisuc'.

is' relacessfully attained before, I am also lenabled to protect the burner from becominggjfde`Av stood by. reference to .the burner tube and feed nozzle;

stroyed, I supply ia shutoff valve at such a distance from thegorifi'ce that the deposit of carbon is prevented, and I makeuse fof. j

the adjustable valve at the orifice merely for the purpose of adjusting the iame, not for entirely shutting off the How .of fuel when the torch is not inuse. j Fvenifcarbon should be deposited upon and about `the shut olf valve lthis would be no serious detriment tothe device as the shut off valve is not used 'for adjusting the flow of fuel to the'esc'ape orifice for regulatingY the flame, but merely to turn on or shut off*- the fuel supply. l A i f My invention also includes the feature ofv attaining a substantially perfect mixture of "delicate 4parts,which successfully uses lowk `grade gasolene or kerosene forfuel and which kcan beareadily manufactured by the use of the Vusualshop equipment. V :It/Iy invention will bevmore readily undert said accompanying drawings in which: f j 'I `Figure l isf aside elevation, partly in vertical section, "of a torch made in accordance with my invention; ff f Fig." 2 is a fragmentary top plan view yof linef-B of Fig. 1. i. Y 1

.Fig d is a fragmentary` detail'horizontal Fig.' 3 is a detail `vertical section on the d .section on the Vline of Fig. l. Fig.V 5' is a viewl in elevation of the container shown-in Fig'l. Y

' Fig. 6 Yis a fragmentary vertical section similar to Fig. lgshowing a slight-modifica-v tion'off'the invention;jand 1' 4 igf? is a 'view inside elevation of thewoven wire container shownin Fig. 6.

In said ydrawings l, is al reservoir for the liquid fuel, provided atits -lowerend witha filling'y plug 2. Uponloneside of the rese'rj the fuel and air and an air admission means 7 Y Yfir voir is mounted aY vertical" istandpipe 3 through which the liquid fuelis vfedv to the burner which is 'designated generally by '4l Vand is mounted upon the upperend of the' VVflower wall'i9, ofthe llame" tube above the chamber being formed intofa rounded baille or projection extending within the tube at itslower side; and providing la hollow battle against whichthe flamefwhi'ch is Aproduced within the tube 6, is adaptedto impinge in itsl passage through the tube. Y The projectrv-ing wall ofthe Vhollow Ybaffle is relatively thin and is adapted to transmit a relatively large; quantity of heat to ,theffuelf Within the vchamber 8. Y y Y y. v Y At the receiving end of the flameltube .it--

terminates in a mixing tube 10 4Whichis concentric with the flame -tube and in axial alinement therewith.v The mixing tubel is. Y relatively short and terminates ati-its outer end in an outwardlyflared orfconed mouth V11. lts inner end is joined Ato-the adjacent end ofthe flameV tube by anend wall 12.

'.Opposite tothe flared end olv the `mixing tube, I arrange a feed' nozzle 13 Whichis in'` axial Valinement with the mixing tube and is provided with a delivery orifice 14eV of rela tively smallYV diameter through which the generatedgas is adapted to be forced ina line stream which is projected axially into the openend or mouth of the` mixing tube. The delivery .nozzle is Vflaredpor- -coned "in-r wardly from 'the orifice 14 and `Lprovide a valve ste1n..1 l inaxial alinement with the orince and provided with a coned ortapered'- end adapted to fitfwithinthetapered nozzle CIV f efe 13 and ycontrol or adjustthejescape of the gas'through the orifice. F or adjusting the valve .Y longitudinally from and; ltoward `f the orifice, I provide atlireadedgopening5 16v in said nozzle 4and the valve stemis correspond- Y inglygthreadedk Therear endet the? stem extends throughYa'fsuitable stuifingrlbox 18" and is lSquared at its extreme end ic-orjthe application of a suitable v-wrenchgorf'handle'for adj ustingjthe Ystem in the thre'adedopening. F or delivering .the gas .from the chamber 8 to theV delivery nozzlea feed passage 19 is` provided, extending Vrearwardly lfrom the chamber Sin the-lower wall 'of -the llame tube and terminating in `an enlarged opening. 2O threaded to receivea .forward kextension Y 21 of the nozzle casting. `v`The feed'spasvsage isrcontinued in the'extension 21 andisv joined to the nozzle properby a vertical pas- 'sagey 22. F or cutting ofi" the feed fa needle shutoff valve "23 isprovid'edA arranged.inV N j end of the standpipe 3c1oses off thestandalinement with the feedpassage 19 and havthrough this member.

ingk a coned tip 24 adapted to bexclosed upon a valve seat25 atV the rear end of the feed passage l19. The valve stein 23 is threaded Y,

tandis mounted in a threaded opening` 26 Vprovided in the' nozzle casting so that it can beopened andA closed by rotation therein. The stem extends out through a suitable stufn'g box d27V and carries on its outer end a hand wheel 28.

The valve 14 is used merely for adjusting Vthe area ofthe delivery orifice, Awhile the valve 23 is usedfor controllin(r vthe flow of `the fuel to the nozzle. Y :Thefdeliver'y lorifice remains open at all times and after the torch has been in use and has become heated and. it is desired that it be shutdown, the flow of fuel ris stopped by closing the valve-23V soY i against the seat. 25. As the i gas 'flowing j l Y romthe generator to the orifice His quite vhot any gas vwhichis contained inthe nozzle onf-the vertical feed, passage 22 when the valve 23 is v,closed lescapes through the oiiiice v 14e Without depositing any carbon, and even if carbon should be depositedV about :the

valvel 23, which is not likely,tliis could not affectthe operation Vo the torch asy valve-23J o can always be operated to shut off the 'liow of gascomplete'ly andis not used fori delicate vadj ustmentjo-f the fiowof' gas.

The means which Ifemploy fer effecting the generation of gascomprises the hollow baille@ and the upper. end ofthe' chamber 8 and m'eansfor causing the'liquidtuel toibe 1 carried into contactwith the under surface of thebafiie. or at least .close enoughto itto be gasified'.V This means consists'of a hollow ion thinible-likeimember 29 which is reelyopen at its upper end "and slightly coned at its j Y lowerend 30. Its lower end is adaptedto be lseated in the uppergend of the standpipe 3 and is partly closedgiby an'inner circumferential flange 31.,v The center ofthe lower end is-v open to permitthe-fuel oilto rise For, the ypurpose `otcausingV the Vfuel tiil` to rise finto contact'withtheunder surface of the bafflel 9 I fill the member 29S with mineralv wooh'asbestos or some similar fibrOllS .mateeV rial 32, adapted to'withstand a considerable f degree of heat. The mass of the filling. 3 2 isfk sufficient tofill the-member 29 and form a:

projecting-portion above the/:upper end thereofA sufficient sov that when the Vtorchlrv parts are assembled the projecting mass ofV the'fil'ling'material wil'lbe pressed into firm vcontact with the vbafiie 9 andjthemember 29V will be seated tightly upon the upper endrof the standpipe 3.2 The membe'r29iis made of such a lengthfthat its upper Vedge does-.not

contact'withthebaiile but yleaves a space at its upper end through which the vgenerated gas canescape after being-.formedby the-fy pipe except forv the .opening through the member 29 and causes allxof the liquid to rise Athrough the .member 29 substantially into contact-with the bafiie y9to be gasified in its -passage to :the nozzle. The gasrwhic-h is thus produced is hot vand dry even when kerosene is used for fuel.

v Such torches are `usually Vprovided'with a pan such as 33 for the burning 'of some of the fuel `in lighting the torch to heat the burnertube and the nozzle. ALI make thevpan 33 separate fromV the flame -tube and mount it on the standpipe 3 in a very simple man-v ner which not only holds the pan in proper position, but makes the pan liquid `tight at its bottom where the pipe 3 projects through same. Y

For this purpose, I preferably press the pan out of sheet metal. The pan has a bottom wall 34 and a side wall 35. Inmake a hole 36 in the bottom wall through which the pipe 3'projects and I provide a thimble 37 sliding 'freely on the upper end of the pipe 3 and long enough to reach fromV the bottom of thepan to the lower end of the nozzle 7 on the flame tube. vFor tightly bindingthe pan 33 and the thimble 37 'iniV position, Iprovide a nut 38 threaded upon' the upper end ofthe pipe 3 and adapted to be screw hard up against the lower side of the pan. In assembling the device the flame tube is screwed down upon the upper end of the pipe 3to form a pressure tight connection therewith and then the nut 38 is secured up to hold the pan and thimble tightly against the lower end of the nozzle 7. By this means I am enabled to seat the pan 33 beneath the flame tube and to make aftight joint between the lower end of the thimble 37 andthe bottom of the pan.

The pump 5 consists of a thin walled A pump cylinder 39, in which is arranged a piston 40 securedonl the lower .end ofgan operating rod 4l. The piston 40comprises.

a leather cup 42 and head 43 threaded, on to the lower end of the rod and clamping the leather cup against a shoulder 44 on the rod. YThe lower end of the cylinder 39 is externally threaded and is mounted in a threaded opening 45 provided in a connection member 46. The lower end of the cylinder seats firmly upon the bottom ofL the opening 45 and makes a pressure tight joint.V

opening 45 in which the pump cylinder is Y mounted.

For controlling this port 49 I provide a valve 50 within the chamber48 having a head 5l at its upper end adapted to close upwardly against a seat 52. The valve `has a Vstem f53 guided latV its -lovx'rerwend. in `a guide opening formed in a head 54Vby which I close the lower end of the chamber 48. The valve is normally held up against the seat by a compression spring 55 which surrounds thevalve stem 53 and is compressed between they valve yhead 5V and the closure 54. The valve thus constructed is check valve, which permits air to enterV the V:reservoir from` the pump cylinder but prevents the fuel oilrising into the pump cylinder or obtaining access to the joint vbetween the cylinder and the connection.,

This form of mounting of the pump and its connection with the reservoir isvery substantial and strong, it'his very simple to manufacture, ,and it is more durable than such connections have been heretofore.

In operating, the reservoir having been filled nearly-.full of the` fuel oil, the valve V23 is closed andthe pump operated to pro` duce a' pressure within the reservoir. The. valve 23 is opened .to let the liquid fuel rise up vtothe nozzle and vdrip into the Vpan 33, where it accumulates and is burned to heat up the torch. The valve 23, meanwhile isf closed again. As soon asthe flame tube .be-

comes heated sufficiently, the'valve 23 is again opened land the pressure forces the Vfuel out ofV the'orifice li4 .through the mixf leased from the orifice. Y

This expanding stream of fuel enters the coned inlet 1l ofthe mixing tube 10 and draws suflicient air'y with it to-produce a flame once it has been lighted. The fla-me is (projected through thellame tube.v

nce a llame has vbeen produced itv im!v pinges against thehollow baffle which soon transmits suflicient heat to thefuel heldin contact therewith by the fibrous'material 32 as to completely gasify the fuel so that when the torch is in 'full Voperation only` dry'hct gas passes throughthe feed passages I9 and 22 to the orifice 1**4.

In addition to the air mixing with' the fuell in the mixing'tube it is desirableto provide another means for feeding air to theflame in the flame tube. Forl this purpose, I provide a narrow elongated slot 56 extending substantially from end to end of the flame tube 6 and arranged in the upperside thereof. This slot not only provides means for the addition ofair at this point, but the air in entering at the upper side of the tube iet tends to force the llame down upon the baille mineral wool or such like material inthe chamber 8. .In this form-the'container 57 instead of being in the form of a tube is made of woven wire in the form of a basket litting loosely within the chamber and adapted to'hold the mineral wooland prevent it dropping down into the open end ofthe standpipe 3. rIhecapillary action within the body of the mass of fibrous inaterial'insures the contact of the liojuidv with the'top upper wall of the chamber and theconsequent vaporization of the fuel.

As many modificationsV of my iii'vention will readily suggest themselves to one skilled in the art, I do not limit or confine my inventionV to `the specificstructures-herein vshown and described. f

I claim: l l. In a blow pipe torch, an elongated cylindrical flame tube, the entranceend thereof being contracted,I a fuel feed nozzle' in alinement with said tube andradapted todi- 'Y rect'fuel through said contracted end to form a flameV within the tube, a hollow baffle pro.

f jecting into one side ofthe tube substantially midway between its ends and against whichthe flame is adapted to impinge,.and means Y for forcing liquid fuel throughsaid hollow baffle to be vaporized as -itpasses to said nozzle. Y. 2. In a blow pipe torch, a flame tube havnozzle having an. orifice in alinement with said tube and adaptedy to direct fuel through said contracted endto form. a flame-within the tube, ahollow baille projecting Vinto one Vside of the :tube in the path of they llama,

said llame tube havingY a 'longitudinal airV admission slot in Vits wall .opposite to said` baffle, and means for forcing fuel through said hollow baille and nozzletothe orice.VV

3. In a blow pipe torch, a flame tube, a

fuel feed nozzle having a feed orifice iiiy alinement with said tube, an airV mixingV f tube of relatively small diameter, also in alinement with the llame tube, ,and vhaving a flared end intol which saidV nozzle isadapt-V ed to project the fuel,said inletv constituting a contracted entrance to saidflame tube, a thin walled hollow baille projecting into one side of the tube between its ends and against Y which the llame is adapted torimpingefand means for forcing fuel oil into contact with ing a contracted entrance end, a fuel feed.

said baffle to bevaporizedandfor directing the gas formed to said nozzle'.-V 4. Ina blow pipe torch of theVIV kind de. scribed, a llame tube, an air mixing tube smaller in'diameter than the flame tubeiin alinement therewith, the receiving end of the air mixingtube flared outwardly to ,forni a coned end, fuel feed nozzle :adapted to proj ect, lluicbfi'iel :into said flared end of the air Atube and form flamein said'Y llame tube, the -flamevtube havingairl admis-y sion means at` one `side between itsendS, `.ahollow baille projecting'into the flame'tube opposite to said .airnadm'issionmeans,A said baille being thin walled and hollowpand .means for causingiliquid fuel to contactY vwith'the inner surface ofthe thin wall off the baffle to Vbegasilied and to be delivered to said nozzle.` ,c Q ,c

v 5. In aV torch'.V ofA the kind described, a flame tube, afuel. feed nozzleladapted to project fuel into one end ofsaid flame tube to form a flame, al thiny walledhollow battle projecting into, said llame ,tubeV from' one' side, a Yfuel heating chamber within said baille, a tubular container Lforinineral wool within said chamber, a fuel passage entering.

thelower part of the chamber, -the r"lower end of said lcontainer entering the mouth vofV said feed passage, mineral wool'or the'rlilie in said containery and 'held Ythereby against said thin walledbaflle, the upper end vof they containerV spaced from the baille wall, and

aV passage leading from saidchamber-to said ,i

nozzle. Y

6.' In a burner of the f kind described, a

flame tube a fuel eedjno'zzle having an ori.- l

lice in alinement kwith said tube andladapted to projecta' flame'through said tube, saidl nozzle'v being coned and. provided., with coned needle valve forV adjusting said orifice,

said flame tube havinga" fuel .heating passage in its side wall through which'fluidlfuel is forced. to said nozzle' and a shut-off valve at'wa distancev below said nozzlev for "shut- Vting off the flowbf liquid fuelto said nozzle.

' In witness whereof Ihereunto subscribe" my name this 22nd day of July, A.

9aY Y s 1 .WILLIAM Fernseh.;

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