US1769008A - Oil burner - Google Patents

Description

July 1, 1930.

s. WINKLER 1,769,008

OIL BURNER I Filed Nov. 24, 1926 3 Sheets-Sheet l S. WINKLER July 1, 1930.

OIL BURNER Filed Nov. 24, 1926 3 Sheets-Sheet 2 Invert/2&0 r: QZe hen/Mien Patented July 1, 1930 UNITED STATES PATENT OFFICE STEPHEN WINKLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 0F TWO-THIRDS TO LOUIS H. LEHMAN AND LEON EDELSQN, BOTH OF PHILADELPHIA, PENN- SYLVANIA on. BURNER Application filed November 24, 1926. Serial No. 150,463.

This invention relates to fluid fuel burners and more particularly to an oil burner of the rotary sprayer type.

The use of fluid fuel burners is becoming more and more common as the advantages resulting from their use become better known and appreciated. However, even in spite of the rather marked advance which has been made in the art of burning oil as fuel for heating and other purposes, the oil burners in use prior to this invention have been subj ect to many objectionable features and much adverse criticism which, if not obviated, will eventually result in a decrease in interest on the part of those who are now inclined to accept this type of burner with favor.

One of the chief objects of this invention is the design and construction of an oil burner which is exceedingly simple and inexpensive to manufacture and which is highly efficient in use and low in cost of upkeep.

A further object is the provision of such a burner wherein a high heating efficiency is attained in hot water heaters, boilers, fur

naces and the like, this elliciency being unim paired by the quality of fuel oil which is used. In other words, this burner is designed to operate with equal efficiency when either high or low "iscosity oils are used.

A still further object of the invention is the provision of an oil burner in which atomization or vaporization of the oil is effected to a degree approaching perfection. So etiicient is this atomization that even crude oils may be finely atomized and prepared for per fect combustion.

A still further object is the provision of means for regulating the amount of oil supplied to the rotary sprayer head and the further provision of means for effectively delivering and distributing the one or more supplies of air which are necessary for proper atomization of the oil prior to ignition.

A still further object is the provision of means for regulating and adjusting the size, height and shape of the flame without in any manner requiring alteration of the parts other than their relative readjustment.

A still further object is the provision of means for automatically effecting ignition of the oil as soon as the oil has been properly atomized by the action of the rotary sprayer head, this means being either mechanically or electrically controlled. In each instance this automatic means operates to effectually re-ignite the atomized fuel should the burner flame for any reason have been extinguished.

A still further object is the provision of an oil burner system operable by means of an electric motor wherein no oil whatever can be delivered tothe rotary sprayer head to subsequently leak upon the furnace floor when the motor is at rest. There is thus eliminated the necessity for employing the usual drip bucket for opening the motor circuit so that any danger of the drip bucket failing to 0perate and causing oil to drip upon the furnace floor is obviated.

A still further object is the provision of an improved feeding mechanism for delivering the oil to the rotary sprayer head for ef-' fective atomization, this mechanism being so arranged that there is no possibility of oil being delivered from the oil well unless the motor is itself in operation.

A still further object is the elimination of all ball or roller bearings, which are ordinarily employedin connection with the rotating parts, such as the feeding mechanism, of the oil burner. Not only have these hearings been eliminated but the parts have been so arranged that they substantially float in oil, thus eliminating any necessity for separate oiling means.

Further objects, and objects relating to details and economies of construction and operation will definitely appear from the detailed description to follow. Structures constituting preferred embodiments of the invention are illustrated in the accompanying 3 drawings, forming a part of this specification, in which:

Figure 1 1s a vertical sectional elevation of the rotary oil burner and its feeding mechanism, together with the operating and gas views of preferred forms of oil feeding mechanisms.

Figure 7 1s a dlagram'matic VleW of an electrical circuit for automatically controlling the operation of the gas pilot control valve. V

Figure 8 is a sectional view of the control valve for controlling the supply of gas to the gas pilot.

In the drawings, the same reference numerals refer to the same parts throughout the several views.

In general this invention comprises a burner mechanism which is operated by an electric motor suitably connected thereto. The burner mechanism proper consists of a main pedestal member upon .which is mounted an annular burner ring, the pedestal member and burner ring acting jointly to house the oil feeding device. founded in an oil well, or reservoir supported or suspended in any suitable manner within the pedestal member and comprises essentially a pair of relatively rotatable members which are complementally formed with respect to one another to effect the delivery of the oil from the oil well or reservoir to a rotary sprayer head which is located at the upper end of the relatively rotatable members.

Operatively associated with the relatively rotatable members are a series of vanes or other means for circulating currents of air for intimate commingling with the oil mist which is tangentially projected from the rotary sprayer head due to the centrifugal force generated by the rapid rotation of the head. An auxiliary blower attachment is preferably associated with the motor for forcing additional supplies of air around and through the tangential spray of oil for more effectively obtaining the desired atomization or vaporization of the raw fuel necessary for the full and complete combustion of the fuel. In one form of the invention it has beenfound desirable to provide a baffle plate against which the air may be impinged for subsequent deflection into the path of the tangential spray of fuel.

Associated with the oil feeding mechanism in suitable manner is a vertically adjustable collar surrounding the outer of the relatively movable members below the level of the oil in the reservoir for regulating the quantity of oil to be delivered to the sprayer head. It might be well to point out at this time that the rotating elements of the oil feeding mech- This feeding device is anism are so arranged that they substantially float in oil, without the provision or necessity of either ball or roller bearings, the

fuel oil itself serving as the sole lubricant re uired.

s will appear more definitely hereinafter the annular burner ring is arranged substantially concentrically with respect to the rotary sprayer head and is provided with a pair of annular grooves or" channels for receiving whatever oil has not been burned. This oil, which is in reality a condensation of the un-ignited atomized fuel, is carried back, in one instance, to a balanced cup which, upon being filled a predetermined amount, operates to open a valve for controlling the supply of gas to a gas pilot disposed within the burner ring. This provides an automatically operable mechanical device for insuring a maximum pilot flame for igniting the atomized fuel, this flame serving at the same time as an effective agent for preheating the sprayer head and its associated parts. In another instance, there is provided an automatically operable electrically controlled device for the same purpose, the balanced cup in this case being dispensed with andthe condensed oil being carried directly back to the oil reservoir or to the strainer tank. In this latter instance an electrical circuit is provided which includes a thermocouple located in the vicinity of the combustion chamber and a solenoid operatively associated with the gas valve for controlling the pilot flame. Should the fuel supply be cut ofl or interfered with in any manner so that the burner flame goes out the gas valve, through the operation of one system or the other as will be explained more fully hereinafter, is opened wide to supply a greater amount of gas to the pilot light whereupon the adjacent parts of the burner are preheated and the atomized fuel is readily ignited.

Attention is called to the fact that the burner mechanism and the motor for operating the same are so constructed and arranged that should the motor for any reason he stopped there is no possibility of oil being delivered to the sprayer head or to any other partto subsequently leak upon the floor of the furnace. Such a construction and arrangement obviates entirely the necessity for employing the usual drip bucket, operable by the weight of the oil therein, for opening the motor circuit to stop the motor. It has been found that where such a bucket is employed sediment or other foreign matter beneath the bucket often prevents its being lowered the requisite distance for opening the motor circuit and as a result thereof the motor continues to operate and supplies oil to the rotary sprayer head even though the oil is not being burned. In the case of the burner herein described, the oil feeding mechanism automatically stops when the motor stops and starts again only upon the starting of the motor. Further, whenever the flame dies out the unignited vaporized oil which is thrown against the burner ring finds its way into the channels formed in the ring from whence it is carried to the balanced cup for operating the pilot light valve or directly back to the oil reservoir when the electrically controlled pilot valve is employed.

Referring more particularly tothe drawings and especially to Fig. 1, it will be seen that the oil burner comprises a pair of castings 10 and 11, each of which castings is of substantially frusto conical cross section. The lower casting 10 serves as the main pedestal member of the burner and is provided at its upper edge with an interiorly presenting annular flange or shelf 12. An oil well or reservoir 13 is projected downwardly through the central opening in the annular flange or shelf 12, the well being open at its upper end and provided with an annular flange 14 for engaging the upper surfaces of the pedestal shelf 12. Bolts 15 or any other suitable securing means are provided for permanently or detachably securing the well in suspended position within the pedestal member 10. The bottom wall of the oil well 13 is provided with .an enlarged interiorly threaded boss 16 for the purpose to be hereinafter described.

The upper casting 11 which is complementally formed with respect to the lower pedestal member 10 is seated upon the upper perimetral edge of the pedestal member and serves as an annular burner ring for the oil burner. In order to more securely seat this annular burner ring upon the perimetral edge of the pedestal member 10, a number of spaced sockets 17 are formed in the upper edge of the member 10 for receiving a corresponding number of integrally formed lugs 18 suitably formed on the bottom edge of the annular burner ring 11. The burner ring is provided in its interior surfaces with a pair of concentric channels or grooves 19 and 20, the channel 19 being of greater diameter than and vertically spaced from the channel 20. A suitable passage way or port 21 is provided for interconnecting the channels 19 and 20.

Projecting upwardlyfrom the oil well- 13, is a stem 22, the lower end of which is threaded into the boss 16 at the bottom of the well. This stein 22 is preferably formed with an upwardly spiralled groove 23 in its exterior surface, this groove being continuous substantially throughout the entire length of the stem. Closely surrounding this stem and constituting a cover for the spiral groove 23, is a tubular member 24, the bottom end of which rests upon a number of shims or washers 25 surrounding the lower portion of the stationary stem 22. These washers 25 serve as a lower bearing for the tube 24, which latter is rotatable with respect to the stem 22. A pulley 25 is fixed to the tube 24 for the purpose of imparting rotation thereto, this pulley 25 being connected to a pulley 26 on the operating motor 27 by a belt 28. 'While a belt connection has been shown between the electric motor 27 and the rotating member 24 of the burner, as in Fig. 1, it should be understood that any other suitable driving mechanism may be employed, such as a friction drive or a gear drive should either of the latter be found very desirable. The lower end of the rotatable tubular member 24 is provided with a pair of oppositely disposed substantially vertical extending slots 29 and a vertically adjustable sleeve or collar 30 is provided for covering these slots to greater or lesser extent for the purpose to be presently explained. Fixedto the upper end of the rotatable member 24 of the burner is a collar 30 provided with an annular flange 31, the upper surface of this flange being flush with the top end of the rotatable member 24 and being disposed in a horizontal plane-lying somewhat above the upper channel 19 but well below the upper edge of the annular burner ring 11. The flange 31 of the upper collar 30 is provided with a series of spaced integrally formed lugs 32, to the lower ends of which is securely fastened a substantially dish-shaped sprayer head 33. This separate set of air circulating vanes 36 secured in rigid manner to' the rotatable member 24.

From the foregoing description of the burner mechanism shown in Fig. 1, it will be seen that when the motor 27 is in operation, a rotative movement is imparted to the tubular member 24 and in turn to the sprayer head 33 and the air circulating vanes 35 and 36. Assuming that oil is being supplied to the oil reservoir 13, the relative movement between the tubular member 24 and the spirally grooved stationary stem 22 will result in oil being lifted through the spiral passage way formed between the stationarystem and the rotating tubular member to and upon the rotating sprayer head Due to the rapid rotation .of this sprayer head, the oil is projected tangentially from the head in the form of .a fine spray against the annular burner ring 11. At the'same time that this oil is being tangentially sprayed from the centrifugal sprayer head, the air circulating vanes 35 and 36 force currents of air around the peripheral edge of the sprayer head and through the central aperture thereof, respectively, so as to intimately mingle with the oil spray head into more direct union with the oil spray.

In the particular arrangement shown in Fig. 1, it will be seen that the pedestal member 10 is provided with a laterally extending member 37 to which is secured one end of an elongated supporting plate 38, the opposite end of the latter being secured to the supporting frame of the motor 27. Mounted upon this plate 38 intermediate the motor and the burner mechanism proper is an oil lever con trol tank 39 and an oil strainer tank 40. It is, of course, understood that the tanks 39 and 40 may be combined in such manner that the strainer tank is eliminated and the strainer element provided in the oil level tank 39, should this latter expedient be found advisable. The oil level control tank is supplied with oil from the main tank, (not shown) through the main supply pipe 41 and the tank 39 is connected to the tank 40 by the pipe 42. The oil well or reservoir 13 of the burner is connected with the fuel oil supply through the pipe 43. The oil level control tank 39 serves to house any suitable type of float mechanism, a ball float being illustrated, for regulating the height of the oil level in the tank 39 and accordingly the level of the oil in the burner reservoir 13.

Suitably mounted upon the plate 38 is a gas valve indicated generally by the reference numeral 44. This valve is normally partially open and supplies gas through the gas line 45 to a pilot light 46 located just within the burner ring 11 for igniting the atomized fuel oil. Leading from the lower annular channel 20 of the burner ring is a downwardly inclined pipe 47, the open end of which is disposed above a balancing cup 48. This balancing cup is fixed to one end of a balanced lever 49, the opposite end of which lever is turned upwardly for operatively engaging the gas valve 44. A counter-weight 50 is secured to that end of the lever 49 which is away from the balancing cup 48 to insure the normally partial closure of the gas valve 44. The fulcrum point 51 of the lever 49 is located at a point intermediate the counterweight 50 and the balancing cup 48. It will be seen that upon starting themotor 27 a rotative movement is imparted to the tubular member 24 and to the sprayer head 33 whereupon oil from the reservoir 13 is carried upwardly through the spiral passage way an delivered upon the rotary sprayer head. Here the oil becomes atomized due to its mixture' with the air circulated by the vanes 35 and 36, but the gas flame of the gas pilot light 46 is normally insufiicient to cause ignition of this atomized fuel. The atomized fuel, however, upon striking the internal walls of the burner ring 11 condenses and flows into the channels 19 and 20 from whence it is carried, through the pipe 47, to the balancing cup 48. When the weight of the oil in this balancing cup reaches a certain predetermined amount, the downward force exerted by the counter-weight 50 is overcome and the valve 44 is opened wide whereupon a greater supply of gas is supplied through the gas line 45 to the gas pilot light 46. The flame of the gas pilot light is thus considerably increased and is suflicient to ignite the atomized fuel oil. This ignition of the fuel oil is materially assisted by reason of the fact that the flame of the gas pilot preheats the sprayer head as the latter rotates within its burner ring. The balancing cup 48is provided in its bottom with an opening 52 of a size sufficient to permit the oil therein to gradually pass into a receptacle 53 suitably connected with the strainer 40. As the oil leaves the balancing cup 48, its weight decreases until it is overcome by the downward force exerted by the counter-weight 5O whereupon the gas Valve 44. is again partially closed. It will, of course, be understood that the operation is entirely automatic and takes place just as well when the burner flame dies out as when the burner is initially started. In other words, there is provided an automatic means for effecting ignition of the atomized oil when the motor 27 is started and the oil feeding mechanism is operating, as well as for effecting re-ignition of the atomized oil when the burner flame, for one reason or another, has gone out while the feeding mechanism continues to operate.

Fig. 7 illustrates the use of an electrical circuit for controlling this automatic ignition and re-ignition of the atomized fuel. lVhere an electrical system of this nature is employed, it becomes possible to dispense entirely with the balancing cup 48 as shown in Fig. 1 and its associated parts and the return pipe 47 may be arranged to carry the unignited condensed oil directly back to the oil reservoir 13 or to either of the tanks 39 or 40. As is clearly shown in Fig. 7, a transformer 55 is employed, the primary terminals of which are connected to the terminals 56 and 57 of the motor 27. The secondary circuit of the transformer 55 includes a thermocouple device 58 of any suitable type which may be conveniently disposed in the vicinity of the combustion chamber of the furnace so that it may be readily affected by the heat of the burner flame. The gas pilot d valve is employed which is very similar to the valve 44 used in the system shown in Fig. 1, the only change being that the stem 59 of the valve is operatively associated with a Cal solenoid connected in series with the thermocouple 58. As will clearly appear from Fig. 8, the energization or de-energization of the solenoid 60 will operate to partially close or completely open the valve 44. It will thus be seen that upon starting the motor 27 and in turn, the oil feeding mechanism, a quantity of oil will be delivered to the sprayer head to be subsequently atomized. However, the pilot light 46, being insufliciently supplied with gas due to the partially closed valve 44, will be unable to cause immediate combustion of the atomized fuel. This, of course, results in a cool furnace and consequently the thermocouple cools and closes the secondary circuit on the transformer 55 whereupon the solenoid 60 is energized to push the plunger 59* upwardly to open the gas valve 44 wide. This ermits a greater supply of gas to the pilot light 46 so that the gas flame is increased a suiiicientamount to cause ignition of the atomized or vaporized fuel. The furnace chamber then becomes heated, the thermocouple 58 which is closely associated with this chamber opens and the secondary circuit is opened with the result that the solenoid 60 is de-energized and the valve 44 returns to its normally partially closed position. It will be seen that the operation of the gas valve 45 is entirely automatic, the operation being exactly the same when the oil supply is cut off or interfered with, while the feeding mechanism is in operation. In this latter instance, the burner flame dies out, the thermocouple cools and the secondary circuit is closed. The solenoid is then energized to push the plunger 59 of the gas valve 44 up to open the gas valve for supplying a greater amount of gas to the pilot light. After the oil begins to flow again, this pilot light is sufiicient to ignite the vaporized fuel, whereupon the heating chamber (and conse quently the thermocouple) is heated up. This results in the separation of the thermocouple elements, the secondary circuit is opened, the solenoid is de-energized'and the gas valve once more becomes partially closed. As has-already been explained, the surplus oil in the annular channels which has not been burned, is carried directly back to the 1Ztrainer or to the oil reservoir as the case may Fig. 3 shows still another arrangement wherein the burner mechanism is shown disposed on the outside of the furnace, the idea being here to blow the atomized fuel into the furnace through an opening 61 in the wall 62 thereof. It will be noticed that the burner ring 11 is provided with a laterally extending annular flange 63 which serves as a support for the hood 64 covering the top of the burner. This hood is provided with a forwardly extending nozzle 65, the extreme forward edge of which is projected a certain distance from the wall of the burner. In this particularinstance, the gas pilot is removed from the burner ring and is disposed as at 66 with its open end in the vicinity of the forward end of the nozzle 65. A copper plate 67 may be provided in the nozzle for preheating pur poses, the flame from the gas pilot being arranged such that it plays upon this copper plate to heat it sufiiciently for assisting the initial ignition of the atomized fuel.

It will be noticed also that the motor 27 is provided at one end thereof with a hood or cover 68 in which is housed a fan 69. This cover is provided with a single port 70 from which air is blown through the air lines 71 and 72. The stem 22 of the burner mechanism is provided with a central aperture 73, to the bottom end of which one end of the pipe 72 is connected. A bafile plate 74 is provided within the hood 64 at the top of the burner, this baffle plate being provided with a plurality of apertures 75 through which air, delivered by the pipe 71 from the blower 68, is directed to force the atomized fuel into the furnace by way of the nozzle 65. At this point attention is called to the fact that a hood similar to the hood 68 shown in Fig. 3 is provided for the motor 27 in the systems shown in Figs. 1 and 7 for the purpose of supplying an auxiliary current of air upwardly through a central bore in the stationary stem 22 of the burner. It will also be understood that in each case, the annular burner ring is provided with the laterally extending annular flange 63 so that, if desired, a hood may be applied to the burner should it be desired to position the same on the outside rather than on the inside of the burner.

Fig. 4 shows a modified form of an atomizing mechanism, the feeding mechanism in this case being similar to that shown in Figs. 1 and 3. In this case the tubular member 24 has fixed thereto at the upper edge thereof an elongated collar 76. The upper end of this collar isprovided with a laterally extending annular flange 77 and intermediate the upper and lower ends thereof is an integrally formed dish-shaped sprayer head 78. A suitable fan 79 is fixed to and carried by the collar 76, this fan being disposed below the sprayer head 78. Mounted upon 'the upper end of the stationary stem 22 in any suitable manner, is an inverted dish-shaped baflle plate 80 provided with a series of spaced legs 81 between which air, delivered through the central bore of the stem 22, may be directed for impingement against the baffle p ate 80. In this particular embodiment of the invention, air is thrown upwardly around the peripheral edge of the sprayer head 78 and downwardly upon the upper surface thereof to effect an intimate mixture thereof with the oil spray. In addition to the fan 79, the laterally extending annular flange 77 may be formed in the shape of vanes for assisting the circulation of air through. and around the different modifications of the oil feeding mechanisms. Fig. 5 shows the tubular member 24 surrounding the spirally grooved stationary member 22, the sprayer head 82 in this case being formed integrally with the sleeve 83 fixed to the rotating member 24. Fig. 6 shows an arrangement wherein a pair of tubular members 84 and 85 are nested one within the other and both of which rotate together with respect to the stationary stem 22. In this last case, the tubular member 84 is spirally grooved on its exterior surface in an opposite direction to that of the spiral groove on the member 22. It will thus be seen that the tubular members 84 and 85 constitute covers respectively for the spiral grooves on the members 22 and 84, whereby to form separate passage ways for delivering the oil from the reservoir 13 to the sprayer head 82. It is, of course, understood that this latter feeding mechanism comprising a pair of tubular members rotatably mounted on the tubular stem 22 may be substituted for the single tubular member 24 shown in Figs. 1, 3 and 4. Due to the rotation of the tubular members 84 and 85 about the stationary stem 22, the oil in the reservoir 13 is forced upwardly through the outer spiral passage way at the same time that it is lifted upwardly through the inner passage way, thereby providing for the delivery of a greater amount of oil-to the sprayer head should this latter be'necessary.

It will be seen that this construction of oil burner contemplates the provision of no complicated or cumbersome machinery. Not only is it quiet, efficient and economical in use but it is also safe due to the fact that no oil whatever can be delivered to the sprayer head when the motor is not in operation. Further, means are provided for regulating the quantity of oil delivered to the sprayer head which regulation may be had by vertically adjusting the collar 30, by varying the number of washers 25 which support the tubular member 24, or by adjusting the float device in the tank 35 for regulating the level.

of the oil in the reservoir 13. Further, the size and character of the burner flame can be readily adjusted by substituting one or the other of the various forms of oil feeding and atomizing mechanisms shown in the several views in the drawings. It is, of course,

' understood that various other forms and ed to be limited or restricted in respect to details of assembly and it is desired to claim the same broadly, as well as specifically as indicated by the appended claims.

What I claim is:

1. In an oil burner, an oil feeding mechanism comprising a vertically extending stem, a tubular member concentrically associated with said stem, and a spiral passage for the oil arranged between said stem and tubular member, the latter being relatively rotatable with respect to each other whereby to draw the oil upwardly through said passage and said tubular member being provided with elongated slots at its lower end operative to force oil into the bottom end of said spiral passage when said tubular member is rotated.

2. In an oil burner, an oil feeding mechanism comprising a stationary stem spirally grooved on its exterior sur ace, a member closing said stem and arranged for rotation t-hereabout in such manner as to lift the oil through said spiral groove, said member being provided with elongated slots at its lower end for forcing oil into the bottom end of said spiral groove upon rotation of said member, and means operatively associated with said slots for regulating the amount of oil so lifted.

3. In an oil burner, an oil feeding mechanism comprising a relatively stationary stem spirally grooved throughout substantially its entire length, a tubular member closely associated with said stem and covering said groove to constitute a spiral passage for the oil, said tubular member being provided at its lower end with a plurality of vertically extending slots, and an adjustable collar mounted on said tubular member and arranged to cover said slots to a greater or less extent.

4. In an oil burner, an oil feeding mechanism comprising a vertically extending stationary stem, a pair of tubular members associated with said stem, said members being relatively stationary with respect to each other and rotatable with respect to said stationary stem, and a pair of oil feeding passages arranged respectively between said stem and said tubular members, said passages being spiralled in opposite directions whereby to simultaneously lift the oil through one of said passages at the same time that the oil is forced through the other of said passages.

5. In an oil burner, an oil feeding and atomizing mechanism comprising a vertically extending stem and a tubular member surrounding said stem throughout substantially the entire length thereof, said stem and member being relatively rotatable with respect to each other, a collar fixed to said member at its upward end provided with an outwardly extending annular flange, an oil sprayer head carried by and spaced from said annular flange, and means for forcing a current of air between said sprayer head and annular flange for effecting atomization of the oil supplied to said sprayer head.

6. In an oil burner, an oil feeding and atomizing mechanism comprising a station ary stem spirally grooved throughout substantially its entire length, a rotatable casing embracing said stem and constituting conjointly with said groove a spiral passage for the oil, a sprayer head carried by and arranged for rotation with said casing, a baflie plate arranged centrally with respect to but spaced from the main body of said sprayer head, and means for circulating a current of air against said baffle plate for effectually atomizing the oil which'is carried through said passage to said sprayer head.

7. In an oil burner, an oil feeding and atomr izing mechanism comprising a pair of cen-v centrically arranged relatively rotatable members providing between them an upwardly extending passage for the oil, the rotatable one of said members being provided at its lower end with one or more slots through which oil is forced into the lower end of said passage, a sprayer head carried by and arranged for rotation with one of said members, and a plurality of air circulating vanes carried by said sprayer head arranged for efiectually commingling a supply of air with the oil vapor through the rotation of said sprayer head.

8. In an oil burner, an oil feeding and atomizing mechanism comprising a stationary stem spirally grooved throughout substantially its entire length, a rotatable casing embracing said stem and constituting conjointly with said groove a spiral passage for the oil, a sprayer head carried by and rotatable with said casing, said sprayer head being substantially dish-shaped and centrally apertured, and means for circulating air through the central aperture of said sprayer head and around the peripheral edge thereof whereby to effectually commingle air with the oil vapor through the whirling action of said sprayer head.

9. In an oil burner, an oil atomizing mechanism comprising a relatively stationary stem provided with a central bore, said bore constituting an auxiliary passage for supplying air to said mechanism, a tubular member rotatably mounted on said stationary member, a sprayer head carried by and rotatable with said tubular member, means for supplying a quantity of oil to said sprayer head upon rotation of said tubular member, and a fan rotatable with said sprayer head for directing a current of air upwardly beyond the peripheral edge thereof, said air current being supplemented by an auxiliary current of air supplied through the central bore of said stationary stem.

10. An oil burner comprising an upper and r lower frame members, an oil well suspended within and supported by said lower frame member, the upper end of said oil well being open, and an oil feeding mechanism including a spirally grooved stem threaded into the bottom of said oil well and projecting upwardly beyond the open end thereof, the upper end of said mechanism being disposed within the confines of said upper frame member.

11. An oil burner comprising a frame member, an oil well suspended within said frame member, a stem threaded into the bottom of said oil well and extending vertically thereabove, a tubular member surrounding said stem and arranged for rotation with respect thereto, the lower portions of said stem and tubular member being normally submerged below the level of the oil in the well, and means for vertically adjusting said tubular member with respect to said stem.

12. An oil burner comprising a frame member, an oil well suspended within said frame member, a vertically extending stem mounted in the bottom of said oil well and extending there above a substantial distance, said stem being provided in its exterior surface with an upwardly extending groove, a tubular member surrounding said stem and forming a cover for said groove, the lower end of said tubular member being provided with substantially vertically extending slots, and a collar arranged exteriorly of said tubular member for longitudinal adjustment in the vicinity of said slots whereby upon relative rotation of said stem and tubular member a greater or less amount of oil in the oil well will be lifted through said upwardly extending groove depending upon the adjustment of the said collar with respect to the slots.

13. An oil burner comprising upper and lower frame members, each of said members being of frusto conical section and said members being complementally formed to seat one upon the other, an oil well supported by the lower frame member,'an oil feeding mechanism associated with said oil well, and a rotary sprayer head-disposed at the upper end of said feeding mechanism and arranged lf)or rotation within said upper frame mem- 14. An .oil burner comprising upper and lower frame members, each of said members being of frusto conical section and said members being complementally formed to seat one upon the other, an oil well supported by the lower frame member, an oil feeding mechanism associated with said oil well, and a rotary sprayer head disposed at the upper end of said feeding mechanism and arranged for rotation within said upper frame member, said upper frame member being provided with an interiorly projecting annular channel.

15. In an oil burner, a supporting pedestal comprising a lower frame member and an upper frame member, said frame members being complementally formed to provide a completed frame of substantial frusto conical section, said lower member being provided at its upper edge with an interiorly projecting annular flange and said upper member being provided with a pair of concentric annular channels vertically offset with respect to each other, said channels being provided with an intercommunicating ort. P 16. An oil burner comprising a main pedestal member, an oil well suspended within and carried by said pedestal member, a ring member seated upon the upper perimetral edge of said pedestal member and projecting thereabove, a vertically extending stem, carried by said oil well, the exterior surface of said stem being continuously grooved upwardly, a tubular member closely associated with said stem and constituting a cover for said continuous groove, a sprayer head fixed to the upper end of said tubular member and arranged for rotation within said ring member, means for regulating the amount of oil introduced into the passage formed by said continuous groove and its tubular member, and means for imparting a rotative movement to said tubular member and said sprayer head whereby to effect delivery of the oil from the well to the said sprayer head throu h said passage.

17. in oil burner comprising a main standard, an oil well suspended within said standard, the upper end of said well being opened, and an oil-feeding and rotary sprayer mechanism detachably carried by said oil well, said mechanism including a spirally grooved stem threaded into the bottom of said oil well and projecting upwardly through the open end thereof.

18. An oil burner comprising a main standard, an oil well suspended within said standard, the upper end of said well being open, a burner ring mounted upon the upper perimetral edge of said standard, an oil feeding mechanism founded upon the bottom of said oil well and projecting upwardly through the open end thereof, said mechanism including a pair of relatively rotatable members provided with an oil passageway therebetween, a rotary sprayer head associated with one of the members of said feeding mechanism, and means for simultaneously imparting a rotative movement to said sprayer head and effecting operation of said feeding mechanism to lift the oil from said oil well, the plane of rotation of said sprayer head lying etween the top and bottom plane of said burner ring.

Signed at Philadelphia, county of Philadelphia, State of Pennsylvania, this 22 day of November, 1926.

STEPHEN WINKLER.

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