US2596229A - Dual pressure gas burner - Google Patents

Dual pressure gas burner Download PDF

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US2596229A
US2596229A US732495A US73249547A US2596229A US 2596229 A US2596229 A US 2596229A US 732495 A US732495 A US 732495A US 73249547 A US73249547 A US 73249547A US 2596229 A US2596229 A US 2596229A
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gas
jet
passages
distributor
stud
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John H Flynn
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid

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  • the present invention relates to improvements in dual-pressure gas-burners, i. e., gas burners which have two types of gas outlets respectively supplied with combustible gas at different pres ⁇ sures to thus provide a main flame and a supporting or sustaining iiame to maintain the ignition of the combustible gas providing the said main flame.
  • dual-pressure gas-burners i. e., gas burners which have two types of gas outlets respectively supplied with combustible gas at different pres ⁇ sures to thus provide a main flame and a supporting or sustaining iiame to maintain the ignition of the combustible gas providing the said main flame.
  • One of the main objects oi the present invention is to provide a superior dual-pressure gas-burner which is reliable and effective in operation.
  • Another object of the present invention is to provide a gas-burner of the character referred to which may be readily assembled and disassembled in a minimum period of time to thus minimize the down-time of equipment with which the gas burner is used.
  • a further object of the present invention is to provide a superior dual-pressure gas-burner the vital parts of which will remain clean and serviceable over long periods of use.
  • Still another object of the present invention is to provide a superior dual-pressure gas-burner having a construction and arrangement of parts whereby, when required, cleaning may be largely effected by the mere act of disassembling the parts.
  • Fig. 1 is a broken view mainly in plan and partly in horizontal section of one form of dualpressure gas-burner constructed in accordance with the present invention
  • Fig. 2 is a view thereof in iront elevation
  • Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 1, but on a. larger scale;
  • Fig. 4 is a broken detail sectional view taken on the line 4-4 of Fig. 3;
  • Fig. 5 is a perspective View of one of the jetstuds detached
  • Fig. 6 is a View mainly in plan and partly in horizontal section of another form of dual-pressure gas-burner constructed in accordance with the present invention.
  • Fig. 7 is a sectional view taken on the line 'I-I of Fig. 6;
  • Fig. 8 is a perspective view of a modied form of jet-stud suitable for carrying out the present invention.
  • Fig. 9 is a View in side elevation of still another form of jet-stud.
  • Fig. 10 is a transverse sectional view taken on the line Ill- I0 of Fig. 9.
  • a linear type of dual-pressure gas-burnerI which includes a distributor-body generally designated by the reference character In and which may be conveniently formed of cast metal.
  • the said distributor-body includes a front wall I I, a parallel rear wall I2, a longitudinal partition I3, end walls I4 and I5, a top wall I6 and a bottom wall Il.
  • the partition I3 above referred to extends from end to end of the distributor-body I0 as is indicated in Fig. l, and serves to divide the interior of the said distributor-body into a highpressure distributing-channel I8 and a low-pressure distributing-channel I9 extending in parallelism with each other from the end wall I4 to the end wall I5 of the distributor-body.
  • an inlet-port 20 Extending vertically through the bottom wall I'I of the distributor-body I0 about midway the length thereof and communicating directly only with the high-pressure distributing-channel I8, is an inlet-port 20. Threaded or otherwise connected to the inlet-port 2D is a supply-pipe 2
  • a suitable source of a combustible gas such, for instance, as a source of a mixture of hydrocarbon gas and air.
  • the partition I3 within the distributor-body I0 comprises three reaches, namely, a lower upwardly-and-rearwardly-inclined reach 22, a substantially-horizontal reach ⁇ 23 and a substantially-vertical reach 24.
  • the substantially-vertical reach 24 is formed with a port 25 providing communication between the high-pressure distributing-channel I8 and the low-pressure distributing-channel I9.
  • the port 25 is shaped to provide a conical valve-seat 26 adapted to be cooperated with by the conical inner end of a screw-valve 21 extending rearwardly through the rear wall I2 of the distributor-body ID. threads of the screw-valve 21 are engaged with internal threads formed within a bushing 28 The external which, in turn, is threaded or otherwise removably connected to the rear wall l2. Preferably and as shown, there is also provided a jam-nut 29 threaded onto the outer portion of the screwvalve 21 and adapted to seat against the rear face of the bushing 28 to rrnly hold the screwvalve in any given position of adjustment.
  • the inclinedreach 22; ofthepartition I3. is provided with a plurality f threaded passages 36 extending between the high-pressure distributingchannel
  • ) are inclined upwardly and forwardly toward the front Wall
  • just referred to are respectively arranged in axial alignment with threaded passages 30.
  • Each. bf.' which. is.. generally," designated by' tliereference character 32 and eachfoffwhich is. preferablyformed ofA ⁇ stainless fsteelor other ⁇ suitable" corrosion-'resistant[material1
  • Each jet-studs; comprises, a, body.v s3. anda sleevev 3 ⁇ 4, ⁇ Which'1atter .is irlaterially .shorterV than,
  • the lower edge of the shield 42 is formed with a plurality of downwardly-opening notches 44 respectively registering With the passages 3
  • a plurality of downwardly-opening notches 44 respectively registering With the passages 3
  • Th lsleeveuSlL-above referred to is formedin itsAk peri-plier 'wi't'h Yannularseries of substantia y-ln'g'itudi'nal-groove-like 10W-velocity gaspesseessq foregoing- 'eommonieetioo betweenA th luf-'pressr 'distributing-:channel 9 f and into adjacent "one ⁇ 'o 'f'I the ⁇ threaded passages 3U Vin the partition ⁇
  • notches 4? is inclined and ⁇ shaped toV substantially correspond to the registering portion of the adjacent passage 3
  • each off-me teasepasseges 49o f depend.. upon-tha pressure.. tained Withinl the high-pressure distributing-channel la? may. for. instance, berombogt. three-quarts of.; inchtotaiooutaone Qnerhalftinhese,
  • Theescrew-val mayeheso.Winsted-testine dos Institution.. restended) 11eme. mme uslr sniie'd-t SibsfQ-i miette; @tether/0.11m@ verwees@ @tites-.neiges el .may be @ons rer-@schwebteeeeipa.-
  • Suchnforeivgnjnattei is most apt to Vcollect against' one side-ofthe lrfbresselte gesehn-veer notches 44 in the shield 42 and may be readily removed by rst removing the shield 42 from the distributor-body and brushing out the said notches.
  • a 4distributor-body generally designated by the reference character 48, similar in basic characteristics to the distributorbody I6 but being of ring-like form rather than of linear form.
  • the distributor-body 4B includes a front wall 49, a rear wall 56, a partition 5
  • the distributor-body 48 may be conveniently formed of cast iron or other suitable metal.
  • the distributor-body 46 is provided in its front or inner wall 49 with a spaced-apart series of passages 54 similar to the passages 3
  • is formed with a port 56 corresponding in function to the port 25 and like the same, having a conical valve-seat which, in this instance, is designated by the reference character 51.
  • valve-seat 51 above referred to is adapted to cooperate with the inner end of a screw-valve identical with the screw-valve previously described and therefore bearing the same reference character 21.
  • said screw-valve is mounted in the rear or outer wall 56 and has associated with it the same features as have been before described and which, therefore, bear similar reference characters.
  • the bottom wall 53 of the distributor-body 48 is provided with an inlet-port 58 through which a combustible-gas mixture may be admitted into the high-pressure distributing-channel 59 in the distributor-body 48.
  • the said high-pressure distributing-channel extends cornpletely around the interior of the distributorbody 48 and is partitioned off from a similarlyshaped low-pressure distributing-channel 66 by the aforesaid partition 5
  • the dual-pressure gas-burner illustrated in Figs. 6 and 7 and above described may function in the same manner as has been described in connection with the showing of Figs. 1 to 5 inclusive.
  • Fig. 8 is illustrated a modified form of jet-stud suitable for use in lieu of the jet-studs 32 before described and designated generally by the reference character 6
  • in the instance shown, is
  • Adjacent its outer end over a portion substantially corresponding in location to the sleeve 34 previously referred to, the jet-stud 6
  • the iiat faces 65 just referred to provide gas-passages inasmuch as they come radially closer to the longitudinal axis of the jet-stud than do the apices 66 of the said polygonal-portion 64.
  • a high-velocity gas-passage 61 similar to the high-velocity gas-passage 40 in the jet-studs 32 before described.
  • Figs. 9 and 10 In Figs. 9 and 10 is illustrated a further alternative form of jet-stud which is generally designated by the reference character 68 and which is adapted to be utilized in lieu of either the jetstuds 32 or the jet-studs 6
  • the jet-stud 68 is formed at its inner end with a stem 69 and at its outer end with a kerf 10 respectively functioning in the same manner as the stems 39 and 62 and the kerfs 38 and 63 before described. 4
  • the forward portion of the jet-stud 68 correspending to the location of the sleeve 34 of the jet-stud 32 is reduced in diameter to form a forwardly-facing stop-shoulder 1
  • the apices of the corrugations of the sheet-metal piece 12 are sized so as to fit passages such as 3
  • Extending longitudinally through the jet-stud 68 is a, high-velocity gas-passage 13 serving in the same manner as the previously described high-velocity gas-passages 40 and 61.
  • a dual-pressure gas burner comprising a casing having an internal partition dividing it into a high-pressure chamber and a low-pressure chamber, a cylindrical outlet in said casing and communicating with said low-pressure chamber, and a tapped through-passage in said partition in axial alignment with said outlet; and a jetplug having a longitudinal core provided with a longitudinal high-pressure-gas through-passage and a threaded inner end received in said tapped passage for removably mounting said core in installed position in which the same extends with clearance through said outlet, and circumferentially spaced longitudinal ribs projecting outwardly from V"said"- ore and'.
  • outlet A a plurality off low-pressurev gas passagesthe outer. end. of: said core being ⁇ provided with means for.

Description

May 13, 1952 J. H. FLYNN DUAL PRESSURE GAS BURNER Filed March 5, 1947 2 SHEETS- SHEET l lll. 2
May 13, 1952 J. H. FLYNN DUAL PRESSURE GAS BURNER 2 SHEETS-SHEET 2 Filed March 5, 1947 Attorneys Patented May 13, 1952 UNITED STATES PATENT OFFICE 2 Claims. l The present invention relates to improvements in dual-pressure gas-burners, i. e., gas burners which have two types of gas outlets respectively supplied with combustible gas at different pres` sures to thus provide a main flame and a supporting or sustaining iiame to maintain the ignition of the combustible gas providing the said main flame.
One of the major uses for dual-pressure gasburners is in connection with the soldering of cans and other containers, especially as a feature of automatic machines wherein reliable and effective operation is imperative.
One of the main objects oi the present invention is to provide a superior dual-pressure gas-burner which is reliable and effective in operation.
Another object of the present invention is to provide a gas-burner of the character referred to which may be readily assembled and disassembled in a minimum period of time to thus minimize the down-time of equipment with which the gas burner is used.
A further object of the present invention is to provide a superior dual-pressure gas-burner the vital parts of which will remain clean and serviceable over long periods of use.
Still another object of the present invention is to provide a superior dual-pressure gas-burner having a construction and arrangement of parts whereby, when required, cleaning may be largely effected by the mere act of disassembling the parts.
With the above and other objects in view, as will appear to those skilled in the art from the present disclosure, this invention includes all features set forth in the appended claims.
In rthe accompanying drawings, in which certain modes of carrying out the present invention are shown for illustrative purposes:
Fig. 1 is a broken view mainly in plan and partly in horizontal section of one form of dualpressure gas-burner constructed in accordance with the present invention;
Fig. 2 is a view thereof in iront elevation;
Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 1, but on a. larger scale;
Fig. 4 is a broken detail sectional view taken on the line 4-4 of Fig. 3;
Fig. 5 is a perspective View of one of the jetstuds detached;
Fig. 6 is a View mainly in plan and partly in horizontal section of another form of dual-pressure gas-burner constructed in accordance with the present invention;
2 Fig. 7 is a sectional view taken on the line 'I-I of Fig. 6;
Fig. 8 is a perspective view of a modied form of jet-stud suitable for carrying out the present invention;
Fig. 9 is a View in side elevation of still another form of jet-stud; and
Fig. 10 is a transverse sectional view taken on the line Ill- I0 of Fig. 9.
The gas-burner of Figs. 1 to 5 inclusive In the figures referred to, there is illustrated a linear type of dual-pressure gas-burnerI which includes a distributor-body generally designated by the reference character In and which may be conveniently formed of cast metal. The said distributor-body includes a front wall I I, a parallel rear wall I2, a longitudinal partition I3, end walls I4 and I5, a top wall I6 and a bottom wall Il.
The partition I3 above referred to extends from end to end of the distributor-body I0 as is indicated in Fig. l, and serves to divide the interior of the said distributor-body into a highpressure distributing-channel I8 and a low-pressure distributing-channel I9 extending in parallelism with each other from the end wall I4 to the end wall I5 of the distributor-body.
Extending vertically through the bottom wall I'I of the distributor-body I0 about midway the length thereof and communicating directly only with the high-pressure distributing-channel I8, is an inlet-port 20. Threaded or otherwise connected to the inlet-port 2D is a supply-pipe 2| leading from a suitable source of a combustible gas such, for instance, as a source of a mixture of hydrocarbon gas and air.
In the particular instance shown and as will be observed by reference to Fig. 3 in particular, the partition I3 within the distributor-body I0 comprises three reaches, namely, a lower upwardly-and-rearwardly-inclined reach 22, a substantially-horizontal reach `23 and a substantially-vertical reach 24. The substantially-vertical reach 24 is formed with a port 25 providing communication between the high-pressure distributing-channel I8 and the low-pressure distributing-channel I9.
At its rear, the port 25 is shaped to provide a conical valve-seat 26 adapted to be cooperated with by the conical inner end of a screw-valve 21 extending rearwardly through the rear wall I2 of the distributor-body ID. threads of the screw-valve 21 are engaged with internal threads formed within a bushing 28 The external which, in turn, is threaded or otherwise removably connected to the rear wall l2. Preferably and as shown, there is also provided a jam-nut 29 threaded onto the outer portion of the screwvalve 21 and adapted to seat against the rear face of the bushing 28 to rrnly hold the screwvalve in any given position of adjustment.
At spaced intervals throughout its length, the inclinedreach 22; ofthepartition I3. is provided with a plurality f threaded passages 36 extending between the high-pressure distributingchannel |78 and the companion 10W-pressure dis- Vtributing-channel I9, as is indicatedin` Fig, 3A,
The said passages 3|) are inclined upwardly and forwardly toward the front Wall |`|V which latter is formed with a similarly spaced series of passages 3|. The passages 3| just referred to are respectively arranged in axial alignment with threaded passages 30.
Each3 of, the .pas sage s, 3| l above referred to togetle'vvith' its companion threaded passage: 3|?, isadaptedtoireceiveone of a plurality of similar ."dS. Each. bf.' which. is.. generally," designated by' tliereference character 32 and eachfoffwhich is. preferablyformed ofA` stainless fsteelor other` suitable" corrosion-'resistant[material1 Each jet-studs; comprises, a, body.v s3. anda sleevev 3\4,`Which'1atter .is irlaterially .shorterV than,
the said body. The respectivev opposite ends of the hodyeare both reduced in diameter to provide an outwardly-facing annular stop-shoulder 357'a'd'f an"iriivardlyfacing 4s'torS-shoulder 355.
Mutefd vvith 'force' fit upon the reducedr outer portion-'ertoe oodyfavalisthes1-eeve 'sa before refeQred`to.A The said vsleeve hasits inner edge seated against'the outwardly-facing' stop-shoulhas anf external' diameter exceeding and may be secured thereto by a suitable number of screws 43.
The lower edge of the shield 42 is formed with a plurality of downwardly-opening notches 44 respectively registering With the passages 3| linV the distributor-body it) and each having a width substantially corresponding to therdiameter of the said passages 3|. Preferably and as shown,
' the curved Yupper Wall of each of-y the said tioti ofitrfe tody'sa ao fitting the eojeeeot pessage 3| intlienfront wall I I with aksnug turn- L ing-int."
"Th lsleeveuSlL-above referred to is formedin itsAk peri-plier 'wi't'h Yannularseries of substantia y-ln'g'itudi'nal-groove-like 10W-velocity gaspesseessq foregoing- 'eommonieetioo betweenA th luf-'pressr 'distributing-:channel 9 f and into adjacent "one` 'o 'f'I the` threaded passages 3U Vin the partition `|3jinsuchvmanner that'thieV said, stopfshqulder. ".,mly. seatsv against the forvvardffaceof theI said partition, all asisinr.
bottom. of; thefkerfe provides .communication vtetxtreen the. high-pres-i sure distributingechannel. I3 in the distributorbody l0 and the outer endofthe given. jetst`ud32` 'The upper front corner ofthe distributor- Y body'm tecreferatybeveledesl at 4| to provide a 'seat .for n a'strip-lilie'shieldl42 which vmay be conveniently producedof cast iron or 'the like.
Thelreet'r' portion; olrthefehieid t2V extends rot/er.l Y
the forward'portion ofthe top wall IG proper .CornealY inner-f en.
notches 4? is inclined and` shaped toV substantially correspond to the registering portion of the adjacent passage 3|.
Operatiowof the gas-burner of Figs. 1 to 5 inclusive Assuming that a combustible gas is beingsupplied-under relatively-high pressure to the highpressure distributing-channel |8, such gas will oW with high velocity,outward1y through the hishfyelccity-l gasfpassaee. 19;.i11-- each Qt tiled etstude.. 3,2 for protection., outward1-v.fy beyond; this;
emerging. from, each off-me teasepasseges 49o f depend.. upon-tha pressure.. tained Withinl the high-pressure distributing-channel la? may. for. instance, berombogt. three-quarts of.; inchtotaiooutaone Qnerhalftinhese,
Theescrew-val mayeheso.Winsted-testine dos einem.. restaient) 11eme. mme uslr sniie'd-t SibsfQ-i miette; @tether/0.11m@ verwees@ @tites-.neiges el .may be @ons rer-@schwebteeeeeipa.-
ulatin of thescre. alvefZ'L In instaneswhere afdi @farbe .charac ...febbre/d. Gebed 1S gestiegene nifQ-l; Withffthefslieg 0i 0.12 mel-lilith it is customary to orif-egcesspsoldembyi means of revolyingbhisliesl,v and s`f11,chf Y 'excess solder, is;` very. t. apt .,t f )be .throyvnpartly lengthwiseloif;the.distributor-bodyand thusgirripl 'ge. upon .the vouterfends of thejjetstudsfl un ess such occurrence is guarded zagair1-st in a flames 46 vor the'supporting-larnes4"! y TheV strip-like Y shield, 4ZA hasY pr ven eietiye in avoiding @heim senator.sacerdotes.. fsiles .matter es.. ...11.temete:jeedsortb gas-passages 31' andV 4|);Y Suchnforeivgnjnattei is most apt to Vcollect against' one side-ofthe lrfbresselte gesehn-veer notches 44 in the shield 42 and may be readily removed by rst removing the shield 42 from the distributor-body and brushing out the said notches.
Periodically, but at relatively-long intervals, it will be desirable to remove the various jetstuds 32 from the distributor-body l0, and this may be accomplished by simply inserting a tool in the lzerf 33 of a given jet-stud 32 and unthreading the stem 39 thereof from the complemental threaded passage 30 in the partition I3. The turning movement of a given jet-stud 32 as just referred to, will cause the edges of the groove-like low-velocity gas-passages 31 to act more or less as a reamer and hence dislodge accumulated foreign matter from the adjacent wall of the passage 3|.
The gas burner of Figs. 6 and 7 In Fig. 6 is shown a 4distributor-body generally designated by the reference character 48, similar in basic characteristics to the distributorbody I6 but being of ring-like form rather than of linear form.
The distributor-body 4B includes a front wall 49, a rear wall 56, a partition 5|, a top wall 52 and a bottom wall 53. Like the distributor-body I6 before described, the distributor-body 48 may be conveniently formed of cast iron or other suitable metal.
The distributor-body 46 is provided in its front or inner wall 49 with a spaced-apart series of passages 54 similar to the passages 3| before described and each of which is in axial alignment with a threaded passage 55 formed in the partition 5| and corresponding to the threaded passages 3l] before referred to. The partition 5| is formed with a port 56 corresponding in function to the port 25 and like the same, having a conical valve-seat which, in this instance, is designated by the reference character 51.
The valve-seat 51 above referred to is adapted to cooperate with the inner end of a screw-valve identical with the screw-valve previously described and therefore bearing the same reference character 21. IIhe said screw-valve is mounted in the rear or outer wall 56 and has associated with it the same features as have been before described and which, therefore, bear similar reference characters.
The bottom wall 53 of the distributor-body 48 is provided with an inlet-port 58 through which a combustible-gas mixture may be admitted into the high-pressure distributing-channel 59 in the distributor-body 48. The said high-pressure distributing-channel extends cornpletely around the interior of the distributorbody 48 and is partitioned off from a similarlyshaped low-pressure distributing-channel 66 by the aforesaid partition 5|.
Installed in each of the passages 54 and in their respective aligned threaded passages 55, is one of the aforesaid jet-studs 32.
The dual-pressure gas-burner illustrated in Figs. 6 and 7 and above described may function in the same manner as has been described in connection with the showing of Figs. 1 to 5 inclusive.
The jet-stud of Fig. 8
In Fig. 8 is illustrated a modified form of jet-stud suitable for use in lieu of the jet-studs 32 before described and designated generally by the reference character 6|.
The jet-stud 6|, in the instance shown, is
6, formed of one piece of metal and is formed at its inner end with a threaded stem 62 and at its outer end with a kerf 63. Adjacent its outer end over a portion substantially corresponding in location to the sleeve 34 previously referred to, the jet-stud 6| is formed with a polygonalportion 64, the apices of which are sized. to snugly fit into a suitablepassage such as 3| or 54 and to cooperate with the wall of such a passage to provide six (more orless) low-velocity gas-passages each of which would have its inner boundary provided by the faces 65 of the said polygonal-portion 64. In effect, the iiat faces 65 just referred to provide gas-passages inasmuch as they come radially closer to the longitudinal axis of the jet-stud than do the apices 66 of the said polygonal-portion 64.
Extending longitudinally through the jet-stud 6| is a high-velocity gas-passage 61 similar to the high-velocity gas-passage 40 in the jet-studs 32 before described.
The iet-stud of Figs. 9 and 10 In Figs. 9 and 10 is illustrated a further alternative form of jet-stud which is generally designated by the reference character 68 and which is adapted to be utilized in lieu of either the jetstuds 32 or the jet-studs 6| before described.
The jet-stud 68 is formed at its inner end with a stem 69 and at its outer end with a kerf 10 respectively functioning in the same manner as the stems 39 and 62 and the kerfs 38 and 63 before described. 4
The forward portion of the jet-stud 68 correspending to the location of the sleeve 34 of the jet-stud 32 is reduced in diameter to form a forwardly-facing stop-shoulder 1| and to have wrapped therearound a corrugated or uted piece of sheet metal 12. The apices of the corrugations of the sheet-metal piece 12 are sized so as to fit passages such as 3| and 54 and to extend higher than the immediately adjacent rear portion of the jet-stud to permit gas to flow interiorly of the flutes or corrugations, as well as through the exterior groove-like spaces between the same. In this manner, an annular series of low-velocity gas-passages are provided.
Extending longitudinally through the jet-stud 68 is a, high-velocity gas-passage 13 serving in the same manner as the previously described high-velocity gas-passages 40 and 61.
The invention may be carried out in other specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.
I claim:
1. A dual-pressure gas burner, comprising a casing having an internal partition dividing it into a high-pressure chamber and a low-pressure chamber, a cylindrical outlet in said casing and communicating with said low-pressure chamber, and a tapped through-passage in said partition in axial alignment with said outlet; and a jetplug having a longitudinal core provided with a longitudinal high-pressure-gas through-passage and a threaded inner end received in said tapped passage for removably mounting said core in installed position in which the same extends with clearance through said outlet, and circumferentially spaced longitudinal ribs projecting outwardly from V"said"- ore and'. being/inthe installed position of the latter', in engagement', with a length of saidr outletv otlii'enthan. an,` outen endilength thereof to d'e'ne *in` said". outlet Aa plurality off low-pressurev gas passagesthe outer. end. of: said core being` provided with means for. release ableV interlockY with-a tool WithwhiishftoV turnthe plug-for its installation in--andremovallfromlthe casing, and saidlthreaded core-end beinglonger than said end-length of saidoutlet soV that-*said rbswill bein brushingengagement with'sadentire endlength on screwingthe plugffroml and into the'casing.- Y y 2.l Ardualfpressuregas"burneras set forth in claim 1, inwhich said ribs Vare1provided-'with relatively sharp` outer edgeswhich areA scraping engagement with said outletonsoreW-ingfthe plug from andintothecasing;
REFERENCES CITED- The following references are of'reoorclr intheV file of`r this patent: Y
Number.
Number Name.V Date; Bell l July 30, .1889: Machlet Nov; 12; 1901 Axtell .,Dec;15, 1903 Y Kitching. Nov; 26,- 1970'7 Kemp, et' al. 1\To.f;.7,.19l6 Keith .1une;1`0, 1924 Hammon .Dec..f8,al;931 Machletl J an'. .1',0., f1939 Flynn, etna'l.V Sept..3!).,\.1947' Stadlel Feb;.1'4,-.1950
FOREIGN PATENTS Country Date Germany .J'unel 1936
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748848A (en) * 1952-01-29 1956-06-05 John H Flynn Multi-flame gas burners

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US2143128A (en) * 1937-03-03 1939-01-10 Adolph W Machlet Needle point burner
US2428274A (en) * 1944-03-01 1947-09-30 Ensign Ribbon Burners Inc Needle flame dual control burner
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