US1303866A - Hydrocarbon-burner - Google Patents

Description

F. V. DETWILERQ HYDROCARBON BURNER.

APPLICATION FILED OCT. 19. 1917.

Patented May .20, 1919.

ISHEETS-SHEET I.

I. ll. I! 1% F. V. DETWILER.

HYDROCARBON BURNER.

APPLICATION FILED OCT. 19. 1917 Patented May 20, 1919.

7 SHEETS-SHEET 2- a w w H,

F. V. DETWILER.

HYDROCARBON BURNER.

APPLICATION FILED OCT. I9. 191;

121mm Mai 20,1919.

I SHtkS-SHEET 3 F. V. DETWILER.

HYDROCARBON BURNER.

APPLICATION FILED 001.19. I917 Patented May 20, 1919.

7 SHEETS-SHEET 4.

F. V. DETWQLER.

HYDROCARBON BURNER.

APPLICATION FILED ocrl 19, 19M.

L$@3,66 .latoni'ud May 20, 1919.

7 SHEETS-SHEET bv F. V. DETWILER.

HYDROCARBON BURNER.

APPLICAHON HLED OCT. l9, l9l7.

Patented May 90, 1919,

T$HEET$$HEET 6.

F. v. DETWILER.

HYDROCARBON BURNER.

APPLICATION FILED OCT. 19; I917v 11,303,866, Patented May 20, 1919.

.v h ISHEETS-SHEETL FOREST V. DET'WILER, OF POTTSTOWN,PEN1\TSYLVANIA.

HYDROCARBON-BURNER.

To all whom it may concern:

Be it known that 1, FOREST V. DETWILER, a citizen of the United States, residing at Pottstown, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in HydrocarbonBurners, of which the following is a specification.

This invention relates to improvements in hydrocarbon burners and one of the objects of the same is to improve and simplify the construction of burners of this character whereby the cost of manufacture will be materially reduced and at the same time the efficiency of the burner will be greatly increased. l p

A further object is to provide an improved burner of this character whereby a perfect blue flame will be produced with hydrocarbon oil, without the slightest noise or pulsation, such as is commonin hydrocarbon burners heretofore constructed.

A further object is to provide an improved burner of this character which will be of a sectional construction embodying separate units whereby a burner of any dey be built up without necessisired size may for the different sizes tating special patterns of burners.

A still further object is to provide a.

, burner of sectional construction, portions of the sections of which are so shaped in the manufacture thereof as to form portions of the gas discharge slots, whereby the laborious operation of cutting these slots in the completed burners, in the manner in which they have heretofore been constructed, will be obviated.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed, and shown in the accompanying drawings, illustrating the invention, and in which:

' Figure 1 is a view partly in elevation and partly in vertical section of an improved burner of this character, constructed in accordance with the principles of this invention.

taken on line 2-2, Fig. 1.

Specification of Letters Patent.

Fig. 2 is a view 1n horizontal section as I Patented May 20, 1919.

Application filed October 19, 1917. Serial No. 197,434.

Fig.3 is a detail view in elevation of a portion of the body of the burner.

Fig. 4 is a vertical longitudinal sectional view of a modified form of the burner.

Fig. 5 is a top plan view partly in horizontal section of the form shown in Fig. 4. Fig. 6 is a top plan view of the priming cup.

' Fig. 7 is a vertical sectional view taken on.

line 77, Fig. 4.

Fig. 8 is a front elevation of one of the units, constituting the body of the burner.

Fig. 9 is a detail view in elevation of several of the units forming the body portion of the burner.

Fig. 10 is a "iew taken on line 10-10, Fig. 11.

Fig. 11 is a side elevation partly in section of the parts shown in Fig. 10.

Fig. 12 is a vertical sectional view of the body portion of another modified formof the invention.

Fig. 13 is a top plan view of one of the units constituting the body portion of the burner shown in Fig. 12. I

Referring more particularly to the drawing, and in the form of the invention shown in Figs. 1 to 3, the body of the burner is preferably of a frusto conical shape, comprising a plurality of superposed units 15 having an outer rim 16, and an annular central portion 17 and a plurality of ribs 18 connecting the central portion and the rim. The rim 16 is reduced at its upper portion to form a shoulder 19 upon which the lower edge of the next uppermost unit is adapted to rest, and the .said lower edge of each of the units is provided with cut-away or reduced portions 20, forming intermediate projecting lugs 21 to rest upon the edges of the next adjacent unit, with the result. that elongated narrow slots 22 will be formed about the body portion of the burner and between the adjacent units. The purpose of these slots or openings 22 is to permit the gas or vapor and the flame of the burner to pass from the inside-to the outside of the burner. The lower portion of this form of burner is formed of superposed elements 23, 24, which are of the same general construction as the remaining elements, but the element 23 is provided with a portion 25 which extends across the opening 26 formed by the superposed elements and this opening the top member 27 and'the bottom member 30 and a nut 32 is provided on the bottom of the fastening bolt so that the partsrnay be removably'secured together. If desired a tubular member 33 may be provided which passes through a portion 33 of each of the ribs 18 and surrounds the bolt 31. Any

number of these tubular members and fastening bolts may be provided and the mem- -bers serve the function of preventing thev hot gases in the chamber 34 formed by the superposed units from condensing before it is burned. Thehot gases circulate around thesemembers '33 and heat the air which is in the chamber. A mixing chamber in the form of a pipe or flue 35 is supported in any suitable manner such. as by means of supports 36'and one end thereof is turned upwardly as at 37 and enters a recess '38 in the bottom member 30 of the burner in such a manner as to form a sup ort for the burner body. The opening o the flue 35 registers with the opening 29 in the unit 24, so that the gases will be discharged from the flue 35 against the portion 2-5 of the element 23 to circulate in the chamber 34 and to be discharged therefrom through the open-- ings 22, 2a

The bottom of the body of the burner may be shaped to form an upwardly opening priming cup 39 which contains asbestos or any other suitable material 40. Suitable supporting brackets 41 may be providedfor supporting the generating pipe 42, which latter encompasses thebody of the burner in proximity thereto, so that the flame from the burner will impinge the pipe. The fluid to be vaporized is supplied to the generatin pipe 42 from the supply pipe 43, connected to any suitable source of supply, and through the pipe 44 which discharges into one end of the generating pipe, from this generating pipe 42 the vapor passes through the pipe 45 to the connection 46 and thence to the nozzle 47 which is located-todischarge into the flue or passage 35 serving as an 1n]ector for the vaporized fluid to be burned,

and this nozzle 47 is controlled by. a suitable needle valve 48.

If desired a prim-ing cup 49'may be disposed beneath the nozzle 47" and suppbrted in any suitable and convenient manner and another priming en 50 may also be pro annular central in any ,;eonvenient or the suitable manner so that it will stand beneath the pipes 44, 45 and preferably intermediate the body of the burner and. the nozzle 47.

, Thus itwill be seen that the oil being vaporized in the pipe 42 will be discharged into the flue 35 and from there into the chamber 34 of the burner, contacting with the Walls of the chamber 26 and also with the tubular members 33, during which time the gases will become thoroughly mixed within the chamber 34 of theburner.

With this improved construction, it will be manifest that the size of the burner may be varied by adding any number of units 15 or by taking any number of units therefrom, according to the size of the burner which it is desired to produce. I

In the form shown in Figs. 4 to 9, the

burner is of a substantially oblong construc-' discharged through the openings 52 and which openings are formed by means of the lugs or projections 55. In .thisform of burner, there is provided the central unit 56 on each side of which the units 51 are arranged and each edge of the. unit 56 is provided with a shoulderedportion 57 to re- .ceive the lugs or projections 55. End members 58 are provided which are arranged on each side of the central member 56 and adjacent the outermost unit 51, and these end members are provided with portions 59 which form closures for the chamber 54. The units 51, central member 56 and end members 59 are detachably secured together in any suitable manner preferably by means of a fastening rod or bolt.60, which passes through apertures 61 in ears 62 on each of the units 51 and corresponding ears 63, 64 respectively on the central and end members 56, 59. Corresponding ears 65 are provided on the elements 51 through which afastening bolt or red 66 passes and this bolt 66 asses through an car 67 on the end memr 59 and has threaded engagement 68 with a portion of the centralinember 56. Thus it will be seen that when it is desired.

to alter the length of the form of burner shown in Fig. 4, or manufacture a burner ot a different length, all that is necessary is to vary the number of units 51.

Each of the units 51 is provided'with an portion 69 which. registers aoorrespondingannular portion 70 of central unit 56 to form a chamber 71,

with

or openings 52 through which the gas is.

which chamber is closed by suitable end members 72, having an opening 7 3 therethrough and through which opening a pipe 74 passes. To the end 75 of this pipe 74: is connected the supply pipe 76 so that the oil to be vaporized which flows into the pipe 7 6 from any suitable source will pass into the pipe 74, to flow through the chamber 71 and from there to the pipe 77 through a suitable connection 78, to be conducted by the pipe 77 which is arranged exterior of adjacent to the body of the burner so that it will be heated by the flame coming from the slots or openings 52. From the pipe 77, the vapor will flow into the pipe 78 and thence into the pipe 79, which latter pipe is also arranged adjacent the body of the burner to be impinged by the -flame therefrom, and from this pipe 79, the vapor will pass to the pipe 80 and from thence to the nozzle 81, to be discharged into the pipe or flue 82, which latter discharges as at 83 into the chamber 5st within the body of the burner and which surrounds the inner chamber 71.

In order that the pipes 77, 79 may be supported and held in position, the end members 59 of the body of the burner may be provided with ears or projections 59,

through which the respective pipes pass and additional ears 56* having apertures therethrough, through which the pipes 77, 79

pass, may be provided on the central unit or member 56.

The end of the pipe or flue 82 is connected with the central member 56 of the body in any suitable or convenient manner and serves as 'a means for supporting the body. The pipe 82 is itself supported by suitable supports 84. A. suitable priming cup 85 may be provided beneath the nozzle 81 and a suitably supported priming cup 86 may be also provided so as to be disposed beneath the pipes 77, 79 and connection 78. In order that the priming cup may be held in position and relieved of weight, suitable supports 86 may be provided, the support at the forward end of the priming cup adjacent thesupply pipe 76 may be providedwith a cap 86", removably secured to the support 88 in any suitable manner such as by means of suitable fastening devices, and this cap 86 may be provided with an upright portion having an opening therethrough and through which the supply pipe 7 6 passes, thereby serving as a means for supporting the supply pipe.

Arranged within the priming cup 86 is a pipe 87 which is provided with suitable apertures 88 in the bottom thereof and the pipe may be covered with any suitable material such as asbestos or the like. The pipe is supplied with fuel from the supply pipe 76 preferably by means of a connection 90 and a controlling valve 91 may be also provided, so that when it is desired to start the burner, the controlling valve 91 may be opened to permit oil .to be discharged into the priming cup and then closed. I

With this improved construction, it will be manifest that as the oil comes from the source of supply and flows through the pipe '76, it is in a practically cold state and passes along the under side of the burner into the pipe 7 1, that is located within the heating chamber 71. This heating chamber raises the temperature of the oil to practically a boiling point so that the oil is at a high boiling temperature when it passes from the pipe 7 t into the connection 78 and from there into the pipe 77. The pipe 77 being enveloped in the flame, reduces to a certain degree carbonization, by having the oil at a high degree of heat before coming into contact with the pipe that is heated to a considerably hi her degree of heat than the pipe 74:. Hereto ore introducin the hydrocarbon oil into a pipe at a very hlgh degree of heat has a tendency to carbonize the oil, but with this improved construction, this objection is eliminated to'a great extent, and the burner may be used for a considerable length of time before it is necessary that it be cleaned. After the hydrocarbon oil has passed through the pipe 77, it is in a highly vaporized state and passes to the connection 78,

from there to the pipe 79 and from the pipe 79 through the connection 80 to the nozzle 81 to be discharged therefrom at a very high temperature into theflue or pipe 82, Where it is mixed with the air and is carried to the burner into the chamber 54 where it is ignited. The chamber 71 through which the pipe 7 at passes and which is formedby the assembling of the units 51, constitutes the heating chamber for raising the temperature of the oil before it flows into the pipe 77 The Walls of this chamber also serve as a hot gas chamber on the outside, giving the gas a chance to thoroughly mix with the air before it is ignited on the outside of the burner. Without this inner chamber 71, it has been found that the gas in the chamber at will back fire or ignite at the needle valve. In order that the pipes may be readily cleaned when desired, the couplings between the pipes may be provided with screw plugs 92 which may be removed to permit access to the interior of the pipes.

In the form of the burner shown in Fi 10 and 11, the units 93 constituting the b0 y of the burner are provided with the lugs 94 to form the slots or openings 95, and if de sired, the alternate units 96, may be of uniform height throughout so that the lugs 94 will be formed only on the units 93. In this form of the invention a unit 97 is provided which may be arranged in any position with respect to the remaining units and has formed integral therewith the generating pipe 98 which surrounds the outside of the unit. To one end of this generating pipe 98 is connected the supply pipe 99, having a controlling valve 100 therein for controlling the supply of oil which flows to the pipe 99 through the pipe 101which latter receives its supply l from a suitable tank 102. To the other end of the generating pipe 98 is connected an .outlet pipe 103 to which is connected the nozzle 104: by means of the connection 105. The nozzle 104 discharges into the pipe or flue 106 which in turn discharges into the body of the burner in the manner shown in Figs. 1 and 4. Oil is supplied to the priming cup 107 located beneath. the generating pipe 98 and to the priming cups 108, 109 in any suitable manner, preferably by the respective nozzles 110, 111, 112, which are connected with the pipe 113, the latter in turnjbeingconnected by means of a suitableconnection 1 14 with the pipe 99, and a suitable controlling valve 115 may be provided for controlling the supply of oil to the pipe 113; Thus in order to start the burner, and when it is desired to supply oil to the priming cups, the valve 115 is opened and when sufficient oil has been discharged into the priming cups, the valve is closed. The generating pipe 98 being located outside of the body of the burner will be in a position to be impinged by the flame from the burner and vapor will be g nerated in this pipe in the same manner as in the form shown in Fig. 1.

Referring to the form of the inventlon shown in Figs. 12 and 13, the units comprising the body portion embody an annular portion 116 within which is arranged a concentric annular portion 117 of a diameter somewhat smaller than the diameter of the portion 116. A circumferential flange 118 is connected with the outer periphery of the annular portion 117 and the diameter of this flange is somewhat less than the internal diamete of the annular portion 116, so that the ribs 119 which project from the periphery of the circumferential flange 118 will form spaces 120 between the ribs and between the periphery of the flange 118 and the annular ortion 116. The flange 118 is provided with perpendicularly arranged portions 121, extending entirely around and adjacent the periphery of the flange and on each side thereof, so that when the units are assembled there will be formed dead air chambers 122 between the portions 121 and the annular portion 117 of each unit. The surface of the portion 117 is shouldered as at 123 so that the inner portions of'the units will interlock, While the ribs 119' adjacent the annula member 116 are provided with projections 124 to form slightly depressed 60 portions 125 intermediate the pro ectlons so that when the units are assembled and fas-- tened together by means of the fastening bolts 126, the portions 125 of the units will form the slots or narrow openings arranged 6e horizontally at the periphery of the body of the burner to permit the gas to pass therethrough.

The bottom member 126 of the unit is provided with a priming cup 127, and an opening 128 into which opening the end of the tube 35 projects so as to support the burner. When the units are assembled, the cap member 129 forms a closure for the chamber 120 formedby the spaces between the ribs 119 and the inner annular portion 117 of the 7 units cooperate to form an intermediate chamber across which chamber and preferably adjacent the bottom thereof is arranged v a reticulated member or screen 130 so as to prevent the gases 'from lighting back to the 30 nozzle.

ith this form of the invention, it will be noted that the flanges 118and the perpendicularly arranged portion 121, together with the inner annular portions 117, 00- 35 operate to formthe dead heat chamber which is disposed between the, chamber 131 and the chamber 120 so that the gases entering the burner will pass through the reticulated member 130 into the chamber 131 to be discharged therefrom into the chamber 120 to be thoroughly mixed and then discharged through the openings formed by the portions 125 of the adjacent units. The chamber 122 serving as means for heating the chamber 131 through which the gas flows.

The generatin pipe 132 may be supported by suitable bra-cl ets 133. b

With this improved construction, it will be manifest that the cost of manufacture will be materially reduced because when the units which constltute the body portion are being cast or formed, one of the faces of each unit,

, or both faces, if desired, will be formed with a depressed portion which constitutes a portion of the gas discharge narrow slots, when the units are assembled. It has been customary heretofore in burners of this character to cast the body all in one piece and then saw, mill or cut out the very narrow slots which form the as discharge outlets. This is a laborious jo able time at a considerable expense. With the present invention all of these objections are obviated.

While the preferred forms of the invention have been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts without departing from the spirit of this invention.

What is claimed'as new is 1. A hydrocarbon burner embodying a sectional body portion, said body portion embodying individual cooperating units,

' each of the units being provided with means and necessitates considering the units together, there being gas outlet openings leading from the outer chamber.

2. A burner. of the character described embodying a sectional body portion, each" section constituting an. individual unit, and means for detachably securing the units together, there being-coiiperating openings-in the units to form an interior chamber and ach'amberencompassing the said interior chamber, and -means whereby gas may be supplied to the outermostchamber, the proximate faces of the portions of adjacent units forming the outer walls of the outermost chamber-being-shaperl to forma narrow gas dischargeopening leading from the last said chamber.

3. A burner ofthe character described embodying a sectional body portion, said body embodying complementary units detachably secured together, there being cooperating'openings in the units whereby an mterlor chamber and an encompassing gas chamber will be formed, adjacent unit faces of the portions of the units forming the outer wall of the gas chamber being shaped to form cooperating portions of gas discharge openings leading from the last recited chamber.

4. A burner of the character described embodying a swtional body portion, said body embodying individual units'detachably secured together, said units embodying an annular inner portion, radial ribs projecting from the periphery of the said annular portion, and a circumferential flange connecting and encompassing the ribs.

5. A burner of the character described embodying a sectional body portion, said body embodying individual units detachably secured together, said units embodying J an annular-inner portion, radial ribs projecting from the periphery of the said annular portion, and a circumferential flange connecting and encompassing the ribs, a portion of said flange being shaped to form ribs projecting perpendicularly therefrom, whereby portions of said unit will be held spaced from the proximate face of the next adjacent unit to form therewith a narrow discharge gas outlet.

6. A burner of the character described embodying a sectional body portion, each section constituting an individual unit, said units being detachably secured one ad acent the other, said units embodying an an,- nular inner portion, l'lbS radiating the periphery thereof, a circumferential flange connected and encompassingthe said annular portion, whereby an inner chamber will be formed by the annular portions of the units when assembled and-the spaces b'etween'the'ribs .will form a chamber exterior of the first said chamber, proximate faces of adjacent units being shaped to fci'in gas discharge with the ends of the ribsoutlets leading from the said outer chamber, end members for the units, means for detacha'bly securing the units and end members together, and means for introducing into the said outer chamber the fluid to be burned.

7. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured together, provisions whereby the units will cooperate to form within the burner a heating chamber and a gas chamber encompassingthe latter, the proximate faces of adja- "cent units being shaped to form narrow gas discharge outlet 'openings lead-ing from the gas chamber, a vaporizingchamber disposed adjacent the said body to be impinged by the flame coming from the said outlet openings, and means whereby vapor may be conducted from said vaporizing chamber said gas chamber, avaporizing chamber disposed adjacent the said .bodyto be impinged by the flame coming from the said outlet openings, and means .whereby vapor may be conducted from said vaporizing chamber and discharged into the gas chamber, the said means embodying an air and gas mixing passage.

9. A burner of the character described embodying a sectional body, said body embodying individual unitsdetachably secured one adjacent the other, provisions whereby theunits will cooperate to form within'the body of the burner a heating chamber and a gas chamber encompassing the latter,end

members cooperating with the said units to form closuresfor the chambers, securing means for the elements, the proximate faces of adjacent units, and of the units and the respective adjacent end members being shaped to form narrow slots constituting discharge outlets from the gas chamber, and means for introducing into the said gas chamber the gas to be burned, the last recited means embodying means for vaporizing fuel oil.

10. A burner of the character described embodying a sectional body, said body embodying individual units detachably. se-

cured one adjacent the other, provisionswhereby the units wil'l'cooperate to {form within the body of the burner a heating chamber and a gas chamber encompassin the latter, end members cooperating wit the said units to form closures forgthe chambers, securing means for the elements, the .proximate faces of adjacent units, and'of the units and the respective adjacent end members being shaped to form narrow slots constituting discharge outlets from the gas chamber, and means for introducing into the said gas chamberthe gas to be burned, the last recited means embodying means for vaporizing fuel oil, and an air and gas mixing passage having communication with he said gas chamber. 7

11. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured together, provisions whereby the units will cooperate to form within the burner a heating chamber and a gas chamber encompassing the latter, the proximate faces of adjacent units being shaped to form narrow gas discharge outlet openings leading from the gas chamber, a vaporizing chamber disposed adjacent the said body to be impinged by the flame coming from the said outlet openings, means whereby vapor may be conducted from said vaporizing chamber and discharged into the said gas chamber, and a priming cup disposed in proximity to and beneath the said vaporizing chamber.

12. A burner of the character described embodying asectional body, said body embodying individual units detachably secured together, provisions whereby the units will cooperate to form within the body a heating chamber and a gas chamber encompassing the latter, interlocking means on the proximate face of adjacent units, the said proximate faces being also shaped to form narrow gas discharge outlet openings leading from said gas chamber, end members 00- operating'with the units and forming closures for the said chambers, securing means for the said end "members and the units, and means for introducing into the said gas chamber the gas to be burned.

' 13'. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured together, provisions whereby the units will cooperate to form within the body a heating chamber and a gas chamber encompassing thelatter, interlocking means on they proximate faces of adjacent units, the said proximate faces being also shaped-to form narrow gas discharge outlet openings leading from said gas chamber, end members cooperating with the units and forming closures for the said gas chamber, securing means for the said end members and the-units, and means for introducing into the. said gas chamber the gas to be burned, the said gas discharge outlet openings extending in a direction circumferentially of the body.

14. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured adjacent each other, provisions whereby the units will co iperate to form within the body a heating chamber and a gas chamber encompassing the latter, interengaging means on the proximate faces of adjacent units for maintaining the units in position, end members cooperating with the units andforming closures for the gas chamber, securing means for the said members and units, the proximate faces of adjacent units and of the units and respective end members being shaped to form extended narrow openings constituting gas discharge outlets from the gas chamber, and means for vaporizing a fluid fuel and introducing the vapor into the said gas chamber, the last recited means embodying a vaporizing pipe through which the fuel passes, said pipe being disposed'to extend for considerable distance adjacent the outer face of the body.

15. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured one adjacent theother, provisions whereby the units will cooperate to form a gas chamber within the body, end members cooperatingvwith the units and forming closures for the chamber, securing means; for the units and end members, the proximate faces of adjacent units being shaped to :form narrow slots constituting gas discharge outlet openings leading from the chamber, said units being'also shaped to form when assembled, an interior heating chamber encompassed by the first recited chamber, andxagainst the walls of which interior chamber the gas: is directed, and means for introducing gas into 100 the first recited chamber. I

16. A burner of the character described embodying a sectional body, said body embodying individual units detachably secured one adjacent the other, provisions whereby 105 the units will cobperateto-form a gas chamber within the body, end members cooperat ing with the units and forming closures for the chamber, securing means for the units and end members, the proximate faces of 110 adjacent units being shaped to form narrow slots constituting gas discharge outlet openings leading from the chamber, said units being also shaped to form when assembled, an interior heating chamber encompassed by the first recited chamber, and against the walls of which interior chamber the gas is directed, a vaporizing pipe arranged adjacent and extending for considerable distance in proximity thereto, and means for 20 conducting the vapor from said vaporizing pipe and discharging the same'into the first. recited chamber. 17. A burner of the character described embodying a sectional body, said body em- 12 bodying individual units, interengaging means on the proximate faces of adjacent units for alining the units, and securing means for the units, the said proximate faces being also shaped to form extended narrow 1,30

\ charge.

18. A burner of the character described embodying a sectional body, said body embodyingindividual units, interengaging means on the proximate faces of adjacent units for alining the units, and securing means for the units, one edge of the units havingprojections and depression therebetween and cooperating with the proximate edge of the neXt adjacen-t unit to form a gas discharge opening therebetween, said units being shaped to form an inner heating chamber and an encompassing gas chamber in the wall of which gas chamber the said discharge opening is formed.

19. A burner of the character described embodying'a sectional body, said. body enibodying individual units, interengaging means onlth'e proximate faces of adjacent units for alining the units, securing means for the units, thesaid proximate faces being also shaped to form extended narrow gas discharge slots therebetween, and means for introducinginto the body a gas to be discharged through the said slots, said units being shaped to form an inner heating. chamber and an encompassing gas chamber in the wall of which gas chamber the said slots are formed.

20. A burner of thecharacter described embodying a plurality of individual units detachably secured together, each of said units embodying an annular peripheral portion and an apertured central portion concentrically arranged within and spaced from the first said portion, spaced radial ribs connecting the-said portions, end members cooperating with the units to form a chamber between the said portions of the units, interengaging means on theproximate faces of the said annular portions for alining the units, the said proximate faces being also shaped to formnarrow slots constituting gas discharge outlets leading from the said chamber, and means for introducinga fluid fuel into the said chamber. v

21. A burner of the character described embodying a plurality of individual units detachably secured together, each of said units embodying an annular per pheral portion" and an apertured central portion concentrically arranged within and spaced from the firstsaid portion, spaced radial ribs connecting-the said portions, end members cooperating with the units to form a chamber between the said portions of the units, interengaging means on the proximate faces of the said annular portions for alining the units, the said proximate faces being also shaped to form narrow slots constituting gas discharge outlets leading from the said chamber, a vaporizing pipe adjacent the outer face of the said body, and means for conducting the-Vapor from said pipe and discharging the same into the said chamber.

22. A burner of the character described embodying a plurality of individual units detachably secured together, each of said units embodying an annular peripheral portion and an apertured central portion concentrically arranged within and spaced from the first said portion, spaced radial ribs connecting the said portions, end members cooperating with the units to form a chamber between the said portions ofthe units, interengaging means on the proximate faces of the said annular portions for alining the units, the said proximate faces being also shaped to form narrow slots constituting gas discharge outlets leading from the said chamber, and means for vaporizing and introducing fuel into the said chamber, the said apertured portion of the units '00- operating to form a heating chamber for the fuel arranged within the first 'said chamber.

23. A burner of the character described embodying a plurality of individual units detachably secured together, each of said units embodying an annular'peripheral portion and an apertured central portion concentrically arranged within and spaced from the first said portion, spaced radial ribs con necting'the said portions, end members 00- 7 operating with the units to, form a chamber between the said'portions of the units, interengaging means on the proximate-faces of the said annular portions for alining the units, the said proximate faces being also shaped to form narrow slots constituting gas discharge outlets leading from the said chamber, and means for vaporizing and; introducing fuel into the said chamber, the said apertured portion of the units cooperating to form a heating chamber for the fuel, the said chambers being out of communication with each other. 7

24. A burner of the character described embodying a plurality of individual units detachably secured together to forma hollow body portion, the said units embodying an annular peripheral portion and an apertured central portion concentrically arranged within and spaced for considerable distance from the firstsaid po t sp ed radial rilos connecting the said portions, end members cooperating wit-h the units to .form a chamber, interengaging portions on the proximate faces of the respective said portions of the units for alining the same, the proximate faces of the said peripheral portions being shaped to form narrow gas discharging slots, the said apertured portions of the units cooperating to form an inner chamber, and means for vaporizingand conducting fuel through the said inner chain- -members codperating with the units to form a chamber, interengaging portions on the proximate faces of the respective said portions of the units for alining the same, the

proximate faces of the said peripheral portions being shaped to form narrow gas discharging slots, the said apertured portions of the units cooperating to form an inner chamber and means for vaporizing and conducting fuel through the said inner chamher without discharging the same into thechamber, and then discharging the vapor into the first said chamber, the saidmeans embodying a vaporizing pipe exterior of the said body and a pipe leading from the vaporizing pipe and extending through the said inner chamber.

26. A burner. of the character described embodying a plurality of individual units detachably secured together, each of said units embodying an annular outer-portion and an annular inner portion concentrically arranged and spaced from each other, spaced radial ribs connecting said portions, a central unit on each side of which a plurality of units are disposed, saidmember also embodying spaced concentrically arranged annular portions and spaced radial ribs connecting the portions, a plurality of said units being disposed on each side of said member, end members to form walls for the g chamber formed between the said annular 1 portions. of the elements, thesaid inner annular portions coiiperating to-form a separate chamlber out of communication with the first said chamber, there being gas discharge outlets leading from the first recited chamber, vaporizing pipes arranged adjacent the outside of the burner, a pipe connected with the vaporizing pipe and extending through the inner chamber to conduct the fuel therethrough, and means for discharging the vapor from the vaporizing'pipe into the first said chamber.

27. A burner of the character described embodying apluralityof individual units detachably secured together, each of said units embodying. an annular outer portion and an. annular inner portion concentrically arranged and spaced from each other, spaced radial ribs connecting said portions, a central 1111113 on each slde of which a plurality of units aredisposed, said central 'unit also embodying. spaced concentrically arranged annular portions and spaced radial ribs con-v necting the portions, a plurality of said units being disposed on each side of ,said central unit, end members to formlwalls for the chamber formed between the said annular portions of the elements, the said inner annular portions coiiperating to form a separate chamber out of communication with the first said chamber, there being gas discharge outlets leading from the first recited chamber, vaporizing pipes arranged adjacent the outside of the 'burnerga pipe connected with the vaporizing pipe and extending through the innerchamber to conduct the fuel therethrough, and means for discharging'the vapor from the vaporizing pipe into the first said chamber, the said pipe being arranged to conduct the fuel through the inner chamber and around the exterior of the said body, whereby the temperature of the fuel will be continuously increased during the passageof the fuel through the pipe.

end members to form walls for the chamber formed between thesaid annular portions of the elements, the saidinner annular portions coiiperating to form a separate chamber out of communication with the first said chambe'nthere being gas discharge outlets leading from the first recited chamber, vaporizing pipes arranged adjacent the outside of the b1 rner, a pipe connected with the vaporizing pipe for discharging the .fuel into the first recited! chamber, and means for supporting the vaporizing pipe from the said central unit and endmembers.

29. Aburner of the character described embodying a plurality of individual units detachably secured together, eachof' said units embodylng an annular outer portion and an annular-inner portion-concentrically arranged and spaced from-each other, spaced radial ribs connecting said portions, a cen tral unit on each side of which a plurality of units'are disposed, said central unit also embodying spaced concentrically arranged annular portionsand radial ribs connecting the portions, a plurality of said units being dis osed on each side of said central unit, en members to form walls for the chamber formed between the said annular portions leading from the first recited chamber, va-

porizing pipes arranged adjacent the outside of the burner, means for discharging the vapor from the vaporizing pipe into the first said chamber, and supports projecting from the said central unit and end members for supporting the vaporizing pipe.

30. A burner of the character described embodying a plurality of individual units detachably secured together, each (if said units embodying an annular outer portion and an annular inner portion concentrically arranged and spaced from each other, spaced radial ribs connecting said portions. a central unit on each side of which a plurality of units are disposed, said central unit also embodying spaced concentrically arranged annular portions and radial ribs connecting the portions. a plurality of said units being disposed on each side of said central unit. end members to form walls for the chamber formed between the said annular portions of the elements, the said inner annular portions cooperating to form a separate fichamher out of communication with the first said chamber, there being gas discharge "outlets leading from the first recited chamber, vaporizing pipes arranged adjacent the outside of the burner, a pipe connected with the vaporizing pipe and extending through the inner chamber to conduct the fuel itherethrough, means for discharging the vapor from the vaporizing pipe into the first said chamber, and interengaging means (on the proximate faces of adjacent unit elements for maintaining the latter in position:

31. A burner of the character described embodying a vapor chamber having ends provided with openings therethrough, and an inlet opening intermediate the ends of the chambers, the wall of said chamber ad 1 jacent the inlet being imperforate except for said inlet opening, for a distance not less than the diameter of said opening, and being provided with outlet slots on each side of the said imperforate portion, a vaporizing pipe passing through said chamber and throu h the openings in the ends of the cham r and supported by the said ends, said pipe being of a diameter considerably smaller than the chamber, means for supplying to the pipe fuel to be vaporized, and means for directing the vapor from said pipe into the chamber exterior of the pipe and through the said inlet opening.

32. A burner of the character described embodying a vapor chamber having ends provided with openings therethrough, and an inlet opening intermediate the ends of the chamber, the wall of said chamber adj acent the inlet being imperforate except for said inlet opening, for a distance not less than the diameter of said opening, and being provided with outlet slots on each side of the said imperforate portion, a vaporizing pipe passing through said chamber and through the opznings in the ends of the charm er, mem rs encompassing the said pipe and engaging the ends of the chamber for holding the pipe in position, said pipe being of ;a diameter considerably smaller than the chamber,vmeans for supplying to the pipe fuel to be vaporized, and means for directing the vapor from said pipe into the chamber exterior of the pipe and through the said inlet opening.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on'this 18th day of October, A. D. 1917. 1

FOREST V. 'DETW'ILER.

Witnesses:

JAMES S. CLIFFORD, MARSHALL Y. STEVENS.

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