US1775715A - Oil burner - Google Patents

Description

Sept. 16, 1930. H 5 1,775,715

OIL BURNER Filed June '7, 1928 3 Sheets-Sheetv l 1 NVENTOR 4m ATTORNEY Sept. 16, 1930. c Q H 1,775,715

OIL BURNER Filed June 1928 3 Sheets-Sheet 2 INVENTOR (& (12 /61 0. Berk BY w M ATTORNEY Patented Sept. 16, 1930 UNITE STTES rarer F ic OIL BURNER Original application filed May 15, 1925, Serial No. 30,419. Divided and this application filed June 7,

192-8. Serial This invention relates to burners and more particularly to. fuel oil burners adapted for domestic use, of type shown and described in my Letters Patent of the United States,

. 110. 1,723,759, granted August 6, 1929, of which the present application is a division.

One of the objects of the invention is to provide a fuel oil burner which is particularly adapted for domestic use and which is automatically controlled, thereby relieving the user fromthealmost constant care and attention that so many of the burners now on the market require.

Another object of the invention is to provide a burner having safety features by means of which the supply of fuel to the burner is automatically cut-01f in the eventtha thepilot light which is intended to burn continuously is blown out by a draft or otherwise, and to keep the fuel supply out off until the user or operator has relighted the pilot, and in the meantime has had a chance to examine the burner for other possible defects.

- Still another object of the invention is to 5 provide a domestic burner capable of a comparatively wide range of heating capacity by reason of the increasing or decreasing of the flame.

A further object is to provide a burner in which provision is made for more complete atomization of the air or steam and fuel than i s customary and in which the degree of atomization can be easily regulated and controlled. The burner is adapted to burn almost any kind or type of oil by reason of the fact that the fuel,regardless of its character can be readily atomized. In the event that a very heavy oil is to be used, steam may be substituted for air as an atomizing agent in which case the heat from the steam aids further atomization.

A still further object is to provide a domestic burner which may be adjustably mounted so that the burner may be easily moved from or into position in front of the furnace whenever it becomes necessary or desirable to clean or inspect either the burner or the furnace. Provision is made so the burner can be moved into or out of operative p0sition without actually detaching the burner, or any of its connections.

Other objects, features, and advantages will appear as the description of the invention proceeds.

In the drawings v Fig. 1 is a view in elevation of a burner and its mountings designed and constructed in accordance with the present invention.

Fig. 2 is avie'w of a vertical section taken on the line 22 of Fig. 3, a portion of the apparatus having been broken away.

Fig. 3 is a view in elevation, partially in section, taken on the line 3-3 of Fig. 1. V

Fig. 4 is an enlarged sectional view taken on the line H of Fig. 1.

Fig. 5 is a view of a horizontal view taken on the line 55 of Fig. 3, a portion of the apparatus having been broken away, and

Fig. 6 is a view of a vertical section taken on the line 66 of Fig; 4. 7

Referring to the drawings, 10 represents an oil supply pipe leading to a suitable source of oil supply from which oil is pumped to the burner under a predetermined and variable pressure. 11 represents an air supply pipe which likewise leads to a suitable source'of air and from which airis pumped to the burner as required. Gas is continuously supplied through a pipe 12 for maintaining a pilot 13 constantly lighted. The air supply pipe 11 and the gas supply'pipe 12 are both threaded at their ends and are screwed into openings in a pipe section 1 1. The pipe section is formed with a central bore 15 extending throughout a portion of its length and with which the gas supply pipe 12, when threaded in the opening 16, is in direct and open communication. The air supply pipe 11 enters the pipe section 1 1 through another opening or port 17 which connects with an independent and separate longitudinal bore 18 which extends from the port 17 to one end of the pipe section 1%; It is understood that the bores 15 and 18 extend through only a portion of the pipe section, 18 terminating at one end of the section and 15 extending almost to the opposite end, the two bores being separated at their inner extremities by the wall 19.

The end of the pipe section 1 1 threugh which the bore 18 extends is provided with an annular flange 20 and a depending annular rim 21, the upper surface of the annular flange being inclined as at 22. The flange 20 and rim 21 are adapted to engage an annular shoulder 23 formed near one end of a T coupling 24 which coupling is provided with circular ports 25 and 26 in its ends and another port 27 intermediate its ends. The rim 21 fits into the port 25 and engages the inner edge of the shoulder 23 while the flange 2O rests upon the upper face of the shoulder 23. The T coupling is provided at botl ends with annular threaded extensions 28 and 29 of reduced thickness so that when the end of the pipe section 14 is fitted into the end of the T coupling 24 with the flange 20 resting upon the shoulder 23, an annular space is provided between the pipe section 14 and extension 28. Packing material 30 ane a packing gland 31 are placed in this space and a hexagonal securing nut 32 is screwed onto the threaded extension 28 thus securin the packing 30 and gland 31 in operating position and foming a swivel conne tion between the pipe section 14 2111f the T coupling 24.

The T coupling 24 is termed wi V th a second annular shoulder which consta do ates a seat for an annular washer 34. A pi section which is formed at one end with an annular flanged portion is sea ved with its ilazge upon the washer 34 so that the main section of the pipe extends into the chamber in the T coupling 2-1: between the two shoulders 23 and 33. An externally threaded lot-hing ring 37 is screwed into the end of the couplii 24 so as to hold the pipe s i ion 35 1n position, the locl-nng ring 3'! engagl one o"; the faces of the ll: ngc E36. 1e l c ring 37 is provided with a ninnher of he, holes 38 into which a spanner wrench can )t secured for tightening up the ring against the washer.

Another pipe section 39 which is in the form of an elbov-r is formed and a daptcd to be rotatably mounted within one end oi the T coupling 24. For this purpose the pipe section is formed at one end with an annular rim 40 which is adapted to engage the inner face of the locking ring 3?, and with 2 u annular flange 41 which adapted to he .--=eated upon the lowr face of the locking ring 3?. The flange +11 is bevelled as at 42 so as to provide an annular space between the main section of the pipe se ion and the threaded extension 29. Packing material 43 is inserted in this space and a packing gland 44 is provided for compressing the packing material tightly into the space. A securing nut 45 which is formed with a centrally disposed opening to permit its being slipped on over one end of the pipe section 39 is screwed onto the threaded extension 29 to lock the paclzi12g gland 44 in effective position. The opposite end of the pipe section 39 is internally threaded and is adapted to receive the threaded end of the oil supply pipe 10. It will be noticed that the pipe sections 14 and 39 are so mounted as to permit the T coupling 24 and those parts wh'ch are rigidly secured thereto to freely rotate while the pipe sections 14 and 39 remain stationary. There is no rigid connection between the T coupling 24 and the pipe sections 14 and 39 so that the T coupling is free to rotate, the shoulders 23 and the locking ring 37 and the flanges 20 and 41 respectively, have contacting faces which constitute bearing surfaces and insure the free movement of the coupling 24 with respect to the fixed pipe sections.

As has already been pointed out the T coupling 24 is provided intermediate its ends with the opening or port 27. Into this port 27 which is internally threaded is screwed one end of a horizontally disposed air pipe 46 so that the pipe is in open communication with the interior of the T coupling 24 which in turn communicates with the source or air supply through the bore 18 of the pipe section 14 and the air supply pipe 11. The pipe 46 may be of any desired length. The opposite end of the pipe 46 is externally threaded and is screwed into an opening or port 47 in a burner casing 48.

The burner casing 48 is a chambered member and is termed at one end with a tubular extension or throat 49 of smaller diameter than the body of the casing. The casing is "termed witl a horizontally disposed oil delivery tube 50 open at both ends and with one end extending through and somewhat beyond the end of the throat 49. The opposite end oi the oil delivery tube of somewhat greater diameter than the rest of the tube in order to provide a filter chamber 51. A tubular or cylindrical shaped filter F 2 is positioned within the filter chamber 51 and is maintained therein by means of a threaded fitting 53 screwed into the open end of the delivery tube which is, in fact, a port in the wall of the burner casing 48. The end of the delivery tube which extends beyond the end of the threat 49 is formed with an annular flange 54 threaded on its periphery and termed with a plurality of air ports 55. A tapered oil nozzle 56 having a centrally disposed orifice F7 is mounted in the end of the delivery tube 50.

Oil nozzles such as 56 having orifices of diil'erent sizes are provided so that by a substitution of nozzles the flow of oil through the burner may be easily controlled. The nozzles are each formed with a threaded boss 58 through which the orifice 57 extends and by means of which the nozzle is screwed into the end of the oil delivery tube 50. The flat base of the nozzle 57 is adapted to be seated tightly upon the end of the oil delivery tube 50, thus preventing leakage of oil around the nozzle. The periphery of the nozzle is hexed s0 an internally threaded portion adapted for engagement with the threaded annularflange 54 so that the nozzle may be readily moved longitudinally for purposes of adjustment by merely turning the nozzle. One end of the nozzle overlaps and fits snugly over the end of the throat 49 and this end is somewhat enlarged and is provided with an internally threaded annular bore in which packing material 60 is placed, and an annular packing gland 61 is screwed into the end of the nozto force the packing into efl'ecti've'position thus forming a tlght seal between the nozzle 59 and the throat 49. When the packing gland 61 is screwed into position the packing material 60 forms such a tight seal that the control nozzle 59 is held firmly in position against inadvertent change of adjustment. The packing gland 61 and the enlarged end of the nozzle 59 are so formed that a wrench can readily be applied for turning them as may be necessary.

The other or outer end of the control nozzle 59 is formed with an internal annular flange 62 cast integral with the nozzle, the central hole 63 in the flange acting as an adj ustable orifice to regulate the air supply. In operation the control. nozzle 59 is so'a'djusted that the tapered face of the oil nozzle 56 partially projects through the central opening 63 in the flange 62 whereby air flowing through the orifice 63 is caused to converge on the central stream of oil discharged through orifice 57 and thus brings about the desired atomization. At a'point intermediate the inner and outer peripheries of the flange 62 there is formed or provided an annular groove or recess 64 and a plurality of longitudinal air ports 65 which extend through the flange and connect the groove 64 with the interior section of the control nozzle. Thus it will be seen that air entering the burner casing 48 from air pipe 46 passes around the oil delivery tube and through the throat 49, then passes through ports and divides, a portion of the air passing through the adjustable orifice 63 formed between the tapered face of the oil nozzle 56 and the edge of the annular flange 62, the other stream passing out through the plurality of longitudinal ports in the annular flange and flowing through the groove 64 on the exteriorface of the flange.

A chambered member 66 formed with a threaded annular flange 67 is screwed into the internally threaded outer end of the control nozzle 59. Ata point intermediate the inner and outer peripheries of the flange 67 there is formed or provided an annular groove or recess (68) and a plurality of longitudinal air ports 69 which extend through the flange, the groove 68 and ports 69 corresponding generally with the groove 64 and ports 65 in the flange 62 so that air passing through the ports 65 may pass directly through the flange 67 to the outer face of the flange. The body of the chambered member is externally tapered as at 70 and is provided with. a centrally disposed orifice 71. The chambered portion of the member 66 containsan atomizing chamber 66 wherein a thorough atomization of oil and air takes place. 7

The chambered portion of the member 66 has an inside conical surface 72, the apex of which would be beyond the end of this member, thus forming the central orifice 71 with a knife-like edge.

An externally'threaded ring 73 is adapted to be screwed into the outer end of the control nozzle 59 and is formed internally with a'tapered face 74 so constructed as to form an outlet between it and the tapered exterior portion of the chambered member 66,, .the narrowest part of the outlet, due to'a difference in the degree of angle forming the tapers being provided at the outer end. By reason of this particular construction my burner can be efficiently run at relatively low pressure, thus eliminating much of the noise usually caused by. combustion in a flame travelling at high speed, and likewise permitt-ing the use ofh eavier oil by reason of the fact that two separate and distinct streams of air intersect the ejected stream of oil at separated points, one within the atomizing chamber and the other without the chamber, thus providing adouble source of air for atomization. If because of the low pressure employed there is any tendency for oil to drip, the conical shaped sheet like film of air passing out through around member66 will pick up such. oil and carry it along to the fire and provide further and more complete atomization. It will also greatlyincrease the quantity of air carried into the fire for combustion because of its considerably larger surface area, which through frictional contact with the atmosphere, entrains with it much additional air.

Oil is supplied to the filter chamber 51 through a pipe 76 which at one end is in open communication with the filter chamber. The pipe 76 extends through the air pipe 46 and into the chambered portion of the T coupling 24. There the endot the pipe is connected by means of a curved pipe section 77 with the pipe section 35 so that an open line of con'imunication is: formed between the source of oil supply (not shown) and the filter chamber 51. Upon entering the filter chamber 51 the oil passes through the filter 52, then through the oil delivery tube 50, and finally out through the oil nozzle 56 into the atomizing chamber, where it mixes with the air in the manner already described.

Attached to the bottom of the burner casing 48 is a gas pilot control unit which consists of a chambered housing 78 having therein two chambers 79 and 80 separated by a wall 81 in wnich there is a centrally disposed annular and internally threaded hole or opening 82. A threaded plug 83 is screwed into the hole or opening 82. The plug 88 is cored out in one face as at- 84 and a plurality of lateral ports 85 extend through the plug from the cored out portion to the opposite face. The edge of the core is bevelled as at 86 and forms a seat for a tapered valve 87. The valve is secured on one end of a valve stem 88 which extends through the plug 83 and is threaded at its opposite end to receive an adjustable nut 89 which can be so adjusted as to provide proper contact with a flexible diaphragm 90 which constitutes a dividing partition between the chamber 79 and the chambered portion of the burner casing 48, or in other words the portion or" the burner casing normally filled with air. The spring seat 91 is secured to the valve stem 88 at a point intermediate its ends and constitutes a stop for one end of a coil spring 92, the opposite end of which is seated upon the plug 83. The plug 83, valve 87, stem 88, spring 92, and spring seat 91, constitute a single unit assembly, removable at will. TVhen in operative position the coil spring 92 exerts sul'iicient force against the spring seat 91 to normally hold the Valve 87 in closed position upon the valve seat 86. An adjustable set screw 93 extends through the bottom of the housing 78 and the end of the screw acts as a stop limiting the downward motion of the valve 87 as will hereinafter be more fully explained.

The housing 78 is formed with an externally threaded boss 94 which is provided with a longitudinal orifice or opening 95 which extends through the housing and communicates with the chambered portion thereof. The elongated tubular member 13 which is internally threaded at one end is screwed onto the threaded boss 94 and provides a devices for furnishing a Bunsen flame to the pilot. Near the threaded end of the member 13 air ports 96 are provided. The housing 78 is likewise provided with an internally threaded boss 97, the interior of which is in open communication with the chamber 80 through an orifice or opening 98. An elongated tubular member 99, somewhat longer than the member 13 and which is externally threaded at both ends is screwed into the internally threaded boss 97, its opposite end projecting somewhat beyond the free end of the member 13. A cap is screwed on the free end of the tubular member 99 and is provided with an inclined gas outlet port 101. The cap 100 is screwed into position so that when gas escapes through the outlet port 101 the stream of gas will communicute with the Bunsenfla-me and the column of flame will them pass upwardly past the nozzle 66 thereby igniting the atomized fuel escaping from the burner. Threaded ports or openings 102 and 108 extend through the wall of the housing 78 and intersect the threaded openings 95 and 98. Screws 104 and 105 are screwed into the threaded openings 102 and 103 respectively and serve as means for controlling the passage of gas through the ports 95 and 98. The screws can be turned in sufliciently to completely out off the flow of gas through the ports 95 and 98 or may be adjusted so that any desired amount of gas may pass through these ports.

The upper end of the pipe section 14- is exteriorly machined and at its very end there is formed a threaded boss 106. A lateral. port 107 extends through the machined portion of the pipe 14 and communicates directly with the port 15. A T shaped member 108 in which the opposite ports at its upper and lower ends, Fig. 2, and a through here have been machined is slipped on over the machined end of the pipe 14. The T shaped member is formed with an internal annular recess 109 so that regardless of the particular position of the T shaped member 108 the gas entering the port 107 from the port 15 can always pass freely out through the third port of the T shaped member. The boss 106 is not a perfect circle in cross section but has a flattened face, and an annular washer 110 having a centrally disposed opening corresponding in configuration to that of the boss 106 is slipped over the boss, and finally a nut 111 is screwed into position on the boss to retain the washer in po sition. Thus, it will be seen that while the pipe section 14 remains stationary, the T shaped member 108 is free to turn on the machined end of the pipe. while the washer 110 and boss 106 prevent the T shaped member from slipping off the machined end of the pipe 14. By reason of the peculiar shape of the boss 106 and the opening in the washer 110 there is no tendency for the washer to rotate as the T shaped member rotates so that once the nut 111 is screwed into position it will remain secure. A gas pipe 112 which is externally threaded into the third port of the T shaped member 108 and leads to and communicates with the chamber 79 within the housing 78. If desired, an intermediate pipe section 118 may be interposed between the pipe 112 and housing 78 and may be wound once or more times around the air pipe 46 as is clearly illustrated in Figure 1. Thus, it will be seen that gas which is introduced through the supply pipe 12 passes through the bore 15, pipes 112, and 113, and into the gas chamber 79. It will further be noticed that the machined bore of the T shaped member 108 and the end of the pipe 14 form a swivel connection.

The upper end of the housing 78 isformed with a horizontally disposed flange 114: which extends a short distance out and over the ' pipes 13 and 99, and extending forwardly therefrom is an extension arm 115. A metal plate 116 is disposed directly beneath the flangelll and arm 115 and is suitably secured thereto, a sheet of asbestos .or other heat resisting material 117 being interposed between before the plate is secured to the arm and flange. 7 On the underside of the flange 114; there is formed a boss 118 to'which is pivotally secured at a point nearer one end than the other, a relatively narrow strip of metal 119 the longer end of which extends to and a short distance beyond the side of the flange 114, terminatingat that end in an up wardly projecting portion 120 being in substantially the form of a semi-circle. An-

other metallic strip 121, grooved in form and wider atone end than at the other, is rigidly secured to the underside of the forward end of the extension arm as at 122, While the rear or narrow endis pivotally connected to the short end of the metal strip 119 as at 123. The metal strip 121 is'formed of a metal having a sufficient coeiiicient of expansion so that when heatedthe metal will become extended to operate the mechanism described. It is' apparent that as the forward end of the metal strip is rigidly secured tothe extension arm 115 the expansion can take place only in one direction, which means that the rear or narrow end of the strip will move as the metal contracts and expands. As has already been explained, this rear end of the metal strip is secured to themetallic strip 119 which in turn is fulcrumedat 132 and any movement of the strip 121 is consequently transmitted to the strip 119. The pilot light 13 which is directly beneath the metal strip 121 is kept burning continuously and consequently keeps the metal'stripv hot and in expanded position. j

A switch box 12 l containing an electric switch controlled by a lever 125 is supended on a bracket 126 which is'secured to the air pipe 16 and to the gas pipe 112. The bracket 126 not only supports the switch box v12st but lends rigidity to the entire structure. An

extension arm 127 is soldered, or otherwise secured atone end to the lever 125, its opposite end terminating just short of the flange 114. An adjustable screw 128 is mounted in an arm 129 whichis formed integral with the flange 114C. The screw 128" can be so" ad justedthat its end and the upwardly projecting portion 120 of the: metal strip 119 form a support for the extension lever 127. A weight 180 is positioned upon the extension lever 127fso that ifthe support is-removed from beneath, the end of the lever,

the weight will tend to throw ztheswitch downward and to break the electrical contact normally maintained in the switchfor the purposes which will be presently explained. The switch controls an electrical circuit which in turn operates a motor, not shown. The motor operates air and oil pumps, not shown, by means of whichair and oil are pumped to theburner.

The operation of the apparatus is as follows: The pilot 13 is kept burning continu ously and consequently the metal strip 121 is maintained in heated condition as longas the burner is lighted. Consequently the member or strip is normally in expanded position and acts on the metal strip 119 to force the outer end and having the upwardly projecting portion 120 towards the screw 128 so that the screw and the upwardly projectly portion 120 touch or nearly touch one another. With the extension lever 127 supported between the projection 120 and the screw 128 the switch is in. closed position and the motor (not shown) is maintained in operation whereby the air and oil pumps are kept operating continuously forcing the oil and air to the burn er through the pipes 10 and llrespectively. If, by accident, the pilot light is blown out or otherwise extinguished, the expansible metal strip 121 contracts and acts upon the strip 119 so as to pull the portion 120away from V the screw 128sufiiciently to let the weighted as has been previously stated, is separatedfrom the gas chamber 79 merely by the flexible diaphragm 90. This pressure tends to force the diaphragm downwardlyand in so doing likewise forces the valve stem 88 downwardly and displaces the valve 87 from the valve seat 86. Thus communication is established between the chambers 79 and and the gas which is supplied to the chamber 79 ispermitted to flow freely through the ports to the chamber 80 and then through the port 98, pipe 99 and out through the inclined port 101. Passing outthrough the inclined port 101 the gas becomes ignited by the pilot light Oil is pumped in through the pipe 10 and f 13 and a stream of flame passes upwardly and ignites the atomized gaseous products which are being continuously forced under a slight pressure from the burner.

A protective casing or shield 131 is removably secured to the flange lis so as to provide a protection for the pilot light and to pre vent excessive draughts of air from blowing out the light. The protective casing also acts as a shield for the pipes 13 and 99. Pipe 113 is joined to the housing 78 by screwing into the threaded hole 113.

The claims of this application are directed primari y to the whole apparatus; the structure of the oil atomizing nozzle and of the pilot member 13, ignition member 99, and thermostatically-operated switch control means being set forth in my aforesaid Patent No. 1,723,759 and in my Leiters Patent of the United States, No. 1,722 991, granted August 6, 1929, which is a division thereof.

Apparatus of preferred form and construction has been illustrated and described for the purpose of showing a way in which this invention may be practiced, but the inventive thought upon which this invention is based is broader than the illustrative (ZilliOiTlll'llGllt thereof and no limitations are intended other than those imposed by the appended claims.

I claim 1. In an oil burner construction, consisting of an ignition structure with a burner and pilot means, a coupling having air and oil pipes extending from between its ends to said burner, one of the pipes being outside the other and supporting said ignition structure from said coupling, two separate stationary supply sections connected by said coupling and supporting said coupling, the opposite ends of the coupling being joined by a swivel connection with the inner end portions of the sections so as to permit rotary movement of the coupling with the ignition structure supported thereby, one section providing an oil inlet and having communication with the oil pipe leading from said coupling and the second section including an inner part providing an air inlet for supyflying air for the air pipe leading from the coupling and a partitioned-off outer part providing a gas inlet, a gas pipe arranged between said outer part of the second section and said structure for supplying gas to the pilot means from said gas inlet, said gas pipe being connected with said outer portion for turning movement relatively to said second section, and a connection arranged to insure the movement of said gas pipe in conjunction with the movementof the coupling.

2. In an oil burner construction, the combination of an ignition structure including a burner and pilot means, two separate stationary supply sections and a coupling supported by and between said sections, with its ends connected by swivel connections with the end portions of the sections to provide for the turning of the coupling, a single support for said ignition structure, supported by said coupling for movement therewith and extending from a point between the ends thereof, said sect-ions, coupling and single support arranged to alford passageways for supplying air and oil to said burner, one of said sections having a divided-off portion affording a passageway for supplying gas, a pipe extending between said divided-off portion and said pilot means for supplying gas to the latter, said pipe ha ing a swivel connection with said divided-off portion, and a connection arranged to insure the movement of said gas pipe in conjunction with the movement of said single support.

3. An article of manufacture, consisting of a single unitary structure adapted to form a feeding support for an ignition device including burner and pilot means, and having two separate stationary supply sections and a hollow coupling supported by and between said sections, with its ends connected by swivel connections with the end portions of the sections to provide for the turning of the coupling, outside and inside feed pipes extending from the coupling and turning therewith, the outside pipe providing means by which the ignition device is supported by the coupling and so as to be fed by said pipes, a pipe connection to which the inside pipe is attached, supported by the coupling and pass ing through the hollow interior thereof, in communication with one section to be fed thereby, the hollow interior of the coupling being in direct communication with the other section and with the outside pipe to provide a passageway through which to feed the outside pipe with the supply furnished by the other section.

4. An article of manufacture, consisting of a single unitary structure adapted to form a feeding support for an ignition device including burner and pilot means, and having two separate stationary supply sections and a hollow coupling supported by and between said sections, with its ends connected by swivel connections with the end portions of the sections to provide for the turning of the coupling, outside and inside feed pipes eX- tending from the coupling and turning therewith, the outside pipe providing a support by which the ignition device is supported so as to be fed by said pipes, a pipe connection to which the inside pipe is attached, supported by the coupling and passing through the hollow interior thereof, in communication with one section to be fed thereby, the hollow interior of the coupling being in direct com munication with the second section and with the outside pipe to provide a passageway through which to feed the outside pipe with supply furnished by the second section, an

extension integral with the second section providing a third supply passageway, and a pipe which is to be connected with the igni' tion device, having one end swiveled on said extension and in communication with the passageway thereof.

5. An article of manufacture, consisting of a single unitary structure adapted to form a feeding support for anignition device in cluding burner and pilot means, and having two separate stationary supply sections and a hollow coupling supported by and between said sections, with its ends connected by swivel connections with the end portions ofthe sections to provide for the turning of the coupling, outside andinside feed pipes extending from the coupling and turning therewith, the outside pipe providing a support by which the ignition device is supported so as to be fed by said pipes, a pipe connection to which the inside pipe is attached, supported by the coupling and passing through the hollow interior thereof, in communication with one section to be fed thereby, the hollow interior of the coupling being in direct communication with the second section and with the outside pipe to provide a passageway through which to feed the outside pipe with supply furnished by the second section, an extension integral with the second section providing a third supply passageway, a pipe which is to be connected with the ignition device, having one end swiveled on said eX- tension and in communication with the passageway thereof, and a connection between the outside pipe and the pipe swiveled on the extension, whereby to move these parts in conjunction with the movement of the coupling. o

In testimony thatI claim the foregoing as my invention, I have signed my name hereto.

i O. O. BEGH,

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