US1531236A - Oil burner for brooders - Google Patents

Description

March 24, 1925.

1,531,236 J. T. LANDGRAF OIL BURNER FOR BROODERS Filed dun. 9,1924

2 Sheets-Shut 1 March 24. 1925.

1,531, 23; J. 'r. LANDGRAF OIL BURNER FOR BROODERS mod Juno 9. 1924 2 Shuts-Shut 2 Patented Mar. 1925.

UNITED STATES PATENT oF 1,531,236 r ce.

JACOB T. LANDGRAF, OF IACOIB, ILLINOIS, ASSIGNOB TO .AIEBICAN STEEL PROD- UCTS 00., OF IACOIB, ILLINOIS, A CORPORATION 01 ILLINOIS.

OIL BURNER FOB BBOQDEBS.

Application filed June 9,

To (117 whomit flmy concern:

' Be it known that I, JACOB T. LANDGRAF, citizen of the United States, residing at Macomb. Illinois. have invented certain new and useful Improvements in an Oil Burner for Brooders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to oil burning brooder stoves and in some of its general aspects aims to provide an oil burning supply, air supply and oil burner unit affording decided advantages over those heretofore in common use.

In one of its important objects, my inven-, tion aims to provide an oil well, burner and oil pipe combination which. will permit the height of the flame to be regulated from outside the hover or hood of the burner, which will accomplish this regulation by raising or lowering the oil well, and which will permit the use of a rigid and unjointed oil pipe as the connection between the oil supply-and the'burner. More particularly, my invention provides an oil burning unit of this general class including a pivoted support which will permit, the supply end of the pipe to be raised and lowered with out raising or lowering the burner and without unduly tilting the burner. It also aims to provide a construction for this purpose in which the oil supply pipe is rigidly attached to both the burner and the oil well so as to form a unit, in which this unit is rockingly mounted, and in which the ivotal support for this purpose is mount on the duct thropgl'i which air is supplied to the drum housing the burner.

In another of its objects, my invention aims to provide novel means whereby the oil well connected to the supply end of the oil pipe can-be raised or, lowered so as to vary the extentto which oil is supplied to the wick of the burner, and aims to provide a construction in which the oil well will. continuously kept filled bya detachable oil container and in which the risingand lowering movement is positively limited. More particularly, my invention aims to provide a construction for this purpose in which the raising and lowering can be efi'ected by a rotational movement of a simple cam member interposed between a stationary sup- 1924. 8erlal no. 718,974.

support for the oil well, a second drumhousing the burner and preventing the chicks from contacting with the latter, and

an intermediate air duct connecting the said two drums. For this purpose, my invention provides an outer drum provided .with suitable air inlets, and provides the connecting duct with suitable air outlets opening into the drum. which houses the oil burner. Furthermore, my invention provides simple means for leveling the unit. Still further and also more detailed objects will appear from the following specification and from the accompanying drawings, in which Fig. 1 .is an elevation of an oil burning brooder heater embodying my invention, showing this as employed under a brooder hood or hove-r of which a fragmentary section is shown.

Fig. 2' is an enlarged and fragmentary central and longitudinal section through the same unit.

Fig. 3 is a horizontal sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a section similar to the right hand portion of Fig. 2, but with the cam ring, the oil well and the illustrated part of the oil container shown in elevation;

Fig. 5 is a perspective view of the cam ring, taken from the bottom thereof.

Fig. 6 is a vertical section taken transversely of Fig. 2 along the zigzag line 66 of the latter.

11 i ig. 7 is a perspective view oftheoil we Fig. 8 is an enlarged vertical section through the oil burner and the hot air drums associated with the burner.

Fig. 9 is an elevation of the pivotally mounted unit which consists of the oil burner, the oil well and the interposed oil pipe, showing this unit in the extinguished position in which the oil .barely reaches the bottom of the wick, the level of the oil being indicated by a dotted line.

Fig. '10 is a view similar to Fig. 9, but

' duct 2 also formed of sheet metal.

air duct desirably is laterally lmperforate.

within the upper portion of the hover 4.

showing the oil well raised so as to raise the level of the oil in the burner.

In the embodiment of the drawings, the heating unit of my invention includes a three-piece casing which acts both as a support-for the burner and the 011 supplying parts and also for supplying air to the burner without drawing this air from the interior of the hood or hover of the brooder. This casing comprises a vertical sheet metal drum'l which is laterally imperforate except for an opening corresponding in section to the inverted channel formation of anTzlirr and connects the drum 1 with an outer vertical drum 3, all three of the said casing parts desirably havingtheir lower edges 1n a common plane so as to engage the ground s1- multaneously. When in use, the inner drum 1 is disposed substantially under the center of the hood or hover 4 which is supported 1ndependent of my said heating unit by legs 5 engaging the ground, the air duct 2 belng of such a length that the drum 3 is dlsposed entirely outside of the hover 4. The drum 3 has a plurality of perforations 6, which desirably are at a considerable height above the ground so as to prevent dust from readily blowing into them, and this drum has an aperture of a shape corresponding to that of the air duct 2 and opening into the latter, the duct desirably having ears whereby it may be secured to the two drums, as

' for example by bolts 7 and 8. Theair duct 2 also desirably extends into the interior of the drum 1 and not only is freely open at that end of the drum but also is provided with perforations 9 for increasing the air connection between the duct 2 and the interior of the drum 1.

Extending through the air duct 2 is an oil pipe 10 which connects the bottom of an oil well 11 with the bottom of the oil burner. This burner may be of any customary type and desirably is of a form having a lower oil font 12 1nto which a wick 13 extends. This oil chamber extends upwardly into a burner draft casing 14 which is freely spaced from the burner casing 12 so as to permit hot air to flow upward through the intervening space, thereby producing a continuous circulation of warm air To control the height of the resulting flame, I provide simple means for varying the relative height of the oil well 11 with respect to the oil burner. For this purpose, I am here showing this burner as having a bracket 15 of inverted U shape secured to the base of the burner 12, this bracket being pivoted on a pivot pin 16 extending through the upper ends of a pair of risers 17 which are riveted to the opposite sides of the air duct 2 adjacent to the burner end of the latter.- Thus arranged, the burner together with the oil pipe 10 are pivotally supported, so that the oil well 11 can be ralsed and lowered for the purpose of correspondingly raising or lowering the oil in the oil casing 12 of the burner.

To permit of such a vertical movement of the oil well 11, I su port this upon the top of a cam ring 18 wl neh is freely rotatable within the drum 3. This cam ring has its lower edge formed in substantially sawtoothed fashion to afford a series of inclines, each of which is supported by a pin 19 secured to the drum 3 and projecting inwardly of the latter. Thus arranged, 1t will be obvious from Figs. 1, 2 and 3 that the height of the top of this cam ring above the ground will depend upon the rotational position of the cam ring with respect to the drum 3, and that the height of the oil well which rests on this cam ring will be varied accordingly.

To move the cam ring rotationally for this purpose, I fasten to it an actuating member 20 which projects through a spiral slot 21 in the drum 3' and which has a handle formation on its outer end. When this handle is at the lower end of the slot, the cam ring is in its lowest position, which position lowers the level of the oil well and correspondingly lowers the level of the oil in the burner font 12, so that the wick 13 in the latter cannot draw up sufiieient oil by its capillary action to sustain a flame of any considerable height in the burner. On moving the cam ring by means of the handle 20 so that the cam teeth will raise the cam ring, the oil well is correspondingly elevated, thereby also raising the level of the oil in the burner font 12 and hence increasing the height of the flame and the heating effect of the burner. Owing to the distance between the burner and the oil well, I can readily employ an oil pipe 10 of rela tively great length in proportion to its diameter, and by forming this with substantially U-shaped pipe bends of relatively large radius, I can provide a suflicient flexibility in a pipe of any ordinary metal so as to compensate for the slight tilting of the shanks of the U with respect to each other during the adjusting movement. Consequently, I avoid the need of any joints in this pipe and hence eliminate the leakage of oil and other troubles which are apt to occur when using jointed pipes.

To maintain a proper supply of oil in the well 11. I desirably employ the upper portion of this oil well as the support for an oil container which normally is inverted as shown in Fig. 2. This oil container 22 desirably has a threaded cap 23 provided with two perforations, one of which has an air vent pipe 24 extending through it and reaching to a point which is close to the top of the oil containerwhen the latter is in its normal operative position. The other aperture in the cap 23 serves as an air outlet and is closed by a spring pressed check valve '25 when the container is raised out of its operativeposition, but the stem 26 of this valve engages the bottom of the oil well 11' when the container is placed in its operative position so as to raise the valve off its seat against the pressure .of the spring.

As soon as suiiicient oil has flown out of the oil tank 22 into the well 11 to cover the lower end of the air vent pipe 24, the flow of oil into the well cea ses, but this flow will be resumed whenever the level of the oil flows below the level of the pipe 24, thereby maintaining oil at a substantially continuous level within the well and hence maintaining a supply of oil in the burner font at the same height above the ground.

In using my thus disclosed oil burning unit, it will be obvious that after the burner has been lighted, the regulating of the heat can all be accomplished by a simple shifting of the handle 20 without raising the hover 4 or disturbing 'the chicks under the latter.

To make the adjustment more accurate, I desirably mount a spirit level 27 on the air duct2, so that the three-piece sheet metal supporting member of my appliance can initially be placed in a level position. However, I do not wish to be limited to this or other details of the construction and arrangement here disclosed, it being obvious that these might be modified in many ways without departing either from the spirit of a my invention or from the appended claims.

I claim as my invention 1. In airfoil-burning heater, a pair 0 spaced vertical groimd-engaging drums, a horizontal ground-engaging air duct of inverted U-form rigidly connected at its ends to the respective drums, a pivoted burner in one of the drums, a vertically movable oil well in the other drum, a substantially. U- shaped pipe arranged in the duct and drums and having one end connected to the burner to one side of the pivot thereof and its other end connected to the well,a ring rotatable in the said other drum. and supporting the oil well and having lowcr cam edges, means to rotate the ring, and means engaged with the cam edges of the ring whereby to raise or lower the oil well upon rotation of the ring.

2. In an oil-burning heater, a pair of spaced vertical ground-engaging drums, a

horizontal grpund-engaging air duct of in-' verted U-form. rigidly connected at its ends to the respective drums, a pivoted burner in one of the drums, a vertically movable oil well in the other drum, a substantially U- shaped pipe arranged in the duct and drums and having one end connected to the burner to one side of the pivot thereof and its other end connected to the well, a cam ring in the other drum supporting the oil well, means oil well, and means to effect raising or low- I ering of the oil wellto thereby bodily tilt the U-shaped pipe and effect movement of the burner about its said pivot,

4. In an oil' burning heater, an oil burner,

means to pivotally mount the burner, an oil well, means independent of the pivotal means of the burner to mount the well for vertical movement, a substantially U-shaped pipe connected at one end to the burner to one side of the pivot thereof and connected at its other end to the oil Well, and means to effect raising or lowering of the oil well to thereby bodily tilt the U-shaped pipe and effect movement of the burner about its said pivot.-

5. In an oil burning heater, a pair of vertical drums, an oil burner pivotally mounted in one drum, a rotatable cam ring in the other drum having downwardly facing cam edges, said cam ring being engaged on its periphery with the inner circumference of the said other drum, rigid supports on said other drum engaged with said cam edges, an oil well seated on the cam ring, means to rotate the cam. ring, and a pipe connected at its ends to the oil well and burner respectively.

6. In an oil burning heater, a pair of spaced vertical drums, an oil burner in one drum, the other drum having an air inlet, an

oil well in the said-other drum, means tomovably mount the oil burner, means to movably mount the oil well, lneansconnected to the burner and tothe well for effecting movement of the two in unison whereby to enable the flame of the burner to be regulated, and an air conduit connected at its ends to the respective drums to conduct air from the said other drum to the first named drum and for housing the said means for effect iug movement of the burner upon movement of the oil well.

7. In an oil-burning heater, a pair of spaced vertical ground-engaging drums, a horizontal ground-engaging air duct of inverted U-form rigidly connected at its ends to the respective drums, and having one of its ends projecting into one of the drums, a burner in said drum, means carried by the said projecting end of the drum to pivotally support the burner, a vertically movable oil well in the other drum, means to effect regulable vertical movement of the oil well, and a pipe extending through the air duct and connected at one end to the oil well and connected at its opposite -end to theburner to one side of the pivot thereof.

8. In an oilburning heater, a pair of spaced vertical ground-engaging drums, a horizontal ground-engaging air duct of nverted U-form rigidly connected at its ends to the respective drums, and having one of its ends. projecting into one of the drums, a burner in said drum, means carried by the said projecting end of the drum topivotally support the burner, a vertically movable oil well in the other drum, meansto effect reg-q ulable vertical movement of the oil well, and a pipe extending through the air duct and connected at one end to the oil well and connected at its opposite end to the burner to one side of the pivot thereof, each of the air duct ends being open, said projecting end of the air duct having lateral air outlets disposed in saidfirst named drum, the other drum having a series of air inlets disposed I drum, means to movably mount the oil well,

and a pipe connected at its ends to the burner and oil well respectively and extendin through the air duct.

10. 11 an oil-burning heater, a pair of spaced vertical ground-engaging drums, a

the other drum, means to movably mount the oil well, and a pipe extending through the duct and connected at its ends to the burner and oil well. i

11. In an oil-burning heater, a pair of spaced vertical ground-engaging drums, a horizontal ground-engaging air duct of inverted U-form rigidly connected at its ends 'to the respective drums, a burner in one drum, an oil well in the other drum and a pipe connecting the burner and oil well and extending through theair duct, the other drum having an air inlet and the air duct having its ends communicating with the respective drums whereby air can only enter the first named drum by first entering the other drum and then passing through the air duct. 1 i

12. In an oil-burning heater, a pair of spaced vertical ground-engaging drums, a horizontal ground-engaging air duct of inverted U-form extending throughout the space between the drums and rigidly connected at its ends to the respective drums, a movable burner in one drum, a movable oil well in the other drum, and means to conduct oil from the well to the burner, and for communicating movement of the well to the burner so as to control the flame in the latter.

Signed at Macomb, Illinois, J une 6, 1924.

Jason T. LANDGRAF.

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