US1780430A - Brooder stove - Google Patents

Description

G. T. MARKEY BROODER STOV I Nov. 4, 1930.

Filed Feb. ,2, 925 Sheets-Shet l A TTORNES,

Nov. 4, 1930. G. T. MARKEY 1,780,430

BROODER' STOVE Filed Feb. 2, 1925 2 Sheets-Sheet 2 dun m WW4 ATTORNEYS,

- 109.8. 4% IN ENTOR. 75?

Patented Nov.4, 1930 UNITED STATES PATENT OFFICE GEORGE THOMAS IVIARKEY, OF FORT ATKINSON, VVISOONSIN, ASSIGNOR TO JAMES MANUFACTURING COJMPANY, OF FORT ATKINSON, WISCONSIN, A CORPORATION OF WISCONSIN BROODER STOVE Application filed February 2, 1925.

associated hover in such a manner as to afford an'immediate control. of the temperature underneath the hover whenever the rate of combustion is checked. In the use of an ordinary StO"G the operation of the check damper or the closing of a draft damper does not result in an immediate reduction in the temperature underneaththe hover. On the contrary it frequently happens thatthe heat radiating from the stove will remain constant or even increase after the dampers have been adjusted to check the fire and it is only after 2 the rate of combustion has been materially reduced over a considerable period of time that the heat of the apartment surrounding the stove is sensibly reduced. It is therefore, an object of this invention to control the heat underneath the hover by employing a regulating means which will not only control the rate of combustion but which will also control the flow of the ventilating current of air through the space underneath the hover fol-the combined purpose of Ventilation and heat control.

It is a further object of this invention to provide simple and effective means for combining a smoke flue damper, a ventilating damper, and a check damper in one thermostatically operated mechanism adapted for co-operative action in regulating the rate of combustion within the stove, the heat within the compartment immediately surrounding the stove, and the ventilation of said apartmenn while regulating air delivery from its upper and lower portions.

A further object of this invention is to provide means whereby the heat of the base or ash ,pit enclosing portion of the brooder stove may be tempered and the tempering means utilized to promote economical combustionf to provide improved thermostatic mechanism for regulating the heat and ventilation to rovlde an improved hover adapted to fac1'l1'- Serial No. 6,337,

tats access to the stove and to the space with in the hover from all sides and in general to provide an improved brooder stove suited to the requirements demonstrated by modern scientific methods tobe essential to thebest results in the rearing of young fowl.

In the drawings:.

Figure 1 is a front elevation of my improved brooder stove with the hover door open.

Figure 2 is a side elevation of the stove with the hover and the outer wall of the ventilating passage removed to show the thermostatic mechanism and associated damper connection.

Figure 3 is an isometric view part1 in vertical section exposing the damper an its controliing mechanism, the hover being removed and the smoke damper being shown in open position.

Figure 4t is a similar View showing the dampers in an intermediate position of control.

Figure 5 is a similar view showing the dampers substantially in extreme checking positio- Figure 6 is a fragmentary detail. view showing the thermostat and associated parts. ures '7 and 8 are detailed sectional views of ie upper dampers drawn respectively on lines 7? and 8-8 of Figure 5.

Figure 9 is a fragmentary sectional view of the upper portion of the hover.

Like parts identified by the same reference characters throughout the several views.

The body 1 of the stove within which the fire pot is located is provided with exterior heat radiating ribs 2 and is preferably formed in sections having flanges 3 which are adapted to he bolted together by clamp:

ing bolts 4. The base 5 of the stove is preferably made somewhat higher than that of the ordinary stove and is adapted to support a raised ash pan 6 underneath which a water pan 7 may be placed. Both of the pans 6 and 7 fit loosely within the base leaving ample space for the circulation of air and vapor around the pan 6. By keeping water in the pan '4" the temperature of the base may be kept from rising to a point where chicks coming in contact with it would be burned or overheated. The top of the stove is preferably conically tapered and terminates in a tubular member 11 adapted to receive the smoke pipe 12. A damper 13 within the conically tapered top or cap 10 is pivotally connected by a transverse pin 15 with the upper margin of a curved wall 16 that extends inwardly and upwardly from the lower side of a ventilating aperture 17 and supports the pivot pin 15 approximately at the junction of the stove barrel or body with the cap portion 10. The curved wall 16 forms a portion of a ventilating flue extending into the upper portion of. the body of the stove and of which a portion of the cap 10 consti tutes the upper wall. This flue constitutes part of a ventilating passage extending in a substantially vertical direction along one side of the stove and communicating with the flue proper through the aperature 17 in the stove wall. A ventilating damper 20 is hun upon the same pivot pin 15 and controls the flow of air through this flue to the outlet 11 and smoke pipe 12. The dampers 13 and 20 are preferably connected with each other and adapted to operate as one damper but inversely,the damper 13 moving to close the smoke outlet whenever the damper 20 moves to open a ventilating flue.

The damper 20 is provided with an arm 22 which extends through the opening: 17 and is connected by a link 23' with one arm 24: of a bell crank lever which is pivoted at 25 and has another arm 26 connected with the thermostatically operated rod 27. A thermostat 28 of the so-called wafer or multiple diaphragm type is employed to actuate the rod 27. The thermostat is secured to one side wall 29 of a ventilating passage which extends upwardly from a point near the base of the stove and encloses the thermostat and its damper operating connections above described. The other side wall 30 of this passage is provided with an adjustable hanger 31 to which the bell crank is pivoted at 25 near the lower end of the hanger. The lower end of the hanger may be moved inwardly outwardly by means of an adjustii'ig; screw 32 whereby the fulcrum pin 25 of the bell crank may be properly positioned for ope 'ation of the damper 20 by the thermo, ...:.t. Point bearing; connectiousare provided between the link and the bell crank arm 25ii and between said link and the arm 22 of the damper 20 whereby friction is substantiall eliminated notwithstanding the possible accumulation of dust or the products of corrosion. A clip 33 on the rod may be utilized to operatea draft damper 34 controlling admission of air to the ash pit of the stove. Similar stove draft controls are common and detailed illustration and description is, therefore, deemed unnecessary.

N ear the upper end of the ventilating pas sage and approximately opposite the opening 17, the outer wall 36 of the passage is provided with a damper 37. This damper 37 has inwardly projecting ears or side webs 38 pivoted upon a cross pin 39 within the passage. Between these side webs 38 the damper 37 is provided with an upwardly and inwardly extending arm 42 preferably composed of a strip of fiat sheet metal. The inner end portion of this arm 42 extends across a vertical line through the pivot pin 39 into the path of the outer end of the arm 22 carried by the damper 20, whereby extreme downward movements of the damper 20 and its arm 22 will be transmitted through the arm 4:2 to the damper 37 to allow air to pass directly across the upper end of the ventilating passage through the opening 17 and the ventilating flue above described to the outlet 11.

The operation of the damper mechanism above described is follows; l/Vith the thermostat properly adjusted the various dampers will be in the position in which they are illustrated in Figure 3. lVhen the fire is ignited and as the heat of the atmosphere immediately surrounding the stove increases, the thermostat expands and actuates the bell crank to pull downwardly on the link 23 and damper arm 22, thereby progressively openingdamper 20 and progressively swinging damper 13 toward a position tending to reduce the draft through the fire to the outlet 11 In their intermediate tilted position the dampers 20 and 13 will eventually be brought to the position in which they are shown in Figure 4 in which position the flow through the outlet 11 is divided, the gases and products of combustion passing around the end and side-s of the damper 13, and air passing over the dampers 20 and 13 to the outlet 11 from the vertically extending passage in which the thermostat and its connections are housed. Assuming that the temperature continues to rise until the thermostat draws the damper arm 22 down upon the arm 42 of the check damper 37, the latter will then open and allow air to pass directly across the upper end of said passage, thereby preventing any further increase in the rate of flow upwardly through the passage from its lower end. .ln fact the inward movement of the damper 37 toward its open position will have a tendency to reduce the rate of flow through the lower end of the passage at least sufficiently to offset the tendency to acceleration due to increased heat.

he canopy 45 preferably has the form of. a truncated pyramid, the top of which has an aperture provided with a marginal ring of sulficient size to receive the smoke pipe 12. The ring rests upon the upper portion of the conically tapered cap 10 hereby free rotation ofthe canopy is permitted. One of the canopy sections 48 constitutes a lid hinged to one of the adjacent sections as indicated at 49, whereby the section 48 may be swung backwardly to afiord access to the stove. The stove cap 10 is provided with a door 50 which is preferaily a sliding door as illustrated. By opening the canopy lid 48 and the door 50 fuel may be fed into the stove, the damper 13 being so formed as to avoid-obstructing the delivery of fuel into the fire pot. By loeating the thermostat in the lower portion of the ventilating passage and by arranging the arm 24 of the bell crank in an oblique position with the rod 27 in substantially the same vertical plane in which the bell crank lies, chickens are prevented from entering the passage and roosting upon said rod 27. The passage may also be suficiently narrow to prevent the chickens from getting past the rod 2? and lever 24 into the space above the thermostat.

It will be understood that check damper 8'? Will tend to close by gravity. Dampers 13 and 20 may be substantially balanced, but preferably the damper 13 will slightly overbalance damper 20 and tend to open by gravity.

I claim:

1. A brooder stove having a canopy and provided in its upper portion with an outlet for the products of combustion extending through the canopy, a ventilating passage leading to said outlet upwardly along one side of the stove from the lower portion of the space underneath thecanopy, a damper member controlling the flow of products of combustion to said outlet, a co-operating damper member inversely controlling the flow of air through said passage to the same outlet, and temperature controlled actuating connections for said damper members extending therefrom downwardly through the ventilating passage to the lower end portion thereof.

2. In a brooder stove, provided with a can opy and having an outlet in its upper port-ion,

a ventilating passage leading to said outlet from the'lower portion of the space below the canopy in close proximityto said stove, an intermediately pivoted damper having one damper member controlling the flow of prod net of combustion to said outlet, and a cooperating damper member controlling the flow of air through said passage to the same outlet and adapted to progressively open while the first mentioned damper member is closing, a damper operatingarm extending into the pas- V sage over the lower portion thereof, a rod connected thereto and extending downwardly tothe lowerportion of the passage, and rod actuating devices in the lower portion of the passage.

3. A brooder stove provided with a canopy suspended from its upper portion and provided with an outlet leading through the top of the canopy and an adjacent air inlet underneath the top of the canopy, a pair ofconnected damper members cooperating with the upper portion of the wall of the stove to form a flue leading from the inlet to the outlet, and an intermediate pivotal support for said damper. members, one of said members being arranged to control the flow of prodnets of combustion to the outlet and the other to inversely control the flow of air through the inlet, and means operable from the lower portion of said passage for controlling the position of the dampers with reference to the temperature at the bottom of the passage.

4. A brooder stove having two apertures in the upper portions of its walls and a hover canopy suspended from the portion of the stove between said apertures, a pair of corn nected damper members within the stove, one controlling the flow of products of combustion through theexposed aperture and the other controlling the flow of air through the enclosed aperture, said damper members being adapted to co-operate with the walls of the the stove to form a flue leading from one aperture to the other, a ventilating passage leading upwardly along one side of the stove to said enclosed aperture, and having a valve controlled inlet in its upper portion and also having an open lower end portion.

5. The combination with a brooderstove, having an encircling hover canopy, of a ventilating passage independent of the stove draft passages having a permanently open inlet adapted to permit the escape of air from the lower portion of the canopy enclosed space, and also having an upper inlet provided'with a damper adapted, when open, to permit the escape of air from the upper portion of said space, and a thermostatic device in controlling relation to said damper.

6. A brooder stove having in combination a tapered top portion provided with an outlet at its apex and an inlet adjacent to the base of the tapered portion, a canopy encircling the top portion of the stovebetween the inlet and the outlet, a ventilating flue havingwalls leading upwardly along one side of the stove to said inlet and provided with an aperture in the upper end portion of one of said walls, a damper having one portion controlling the flow of products of combustion through the outlet and another portion inversely controlling the flow of air through the inlet, a damper normally closing the upper aperture in said flue, and connections for opening said d amper during the final opening movement of the inlet damper member.

7. A brooder stove provided with a suspended canopy and having a ventilating passage extending upwardly along one side and provided with upper and lower inlets underneath the canopy, a damper in said passage adjacent its outletend, another damper con trolling the flow of air into the passage through the upper inlet, connections for ac tuating the first mentioned damper and means for trasmitting motion to open the last mentioned damper during opening movement 01 the first mentioned damper, said inlets being adapted for simultaneous delivery 01" air from both the bottom and top portion of the canopy covered space when the air in the passage is being heated by said stove.

8. A brooder stove having a canopy suspended from its upper portion and provided with an outlet flue extending through said canopy, a ventilating passage extending upwardly along one side of the stove leading to said outlet flue, said passage having upper and lower inlet apertures underneath said canopy, a damper controlling the flow of air through the lower inlet of said passage, an auxiliary damper controlling the flow of air through the upper inlet and thermostatic means for initially actuating the first mentioned damper, and then transmitting motion to actuate the damper at the upper inlet during a portion of the openin movement of the first mentioned damper, said upper inlet damper being adapted to automatically close when thermostatically released.

9. The combination with a brooder stove, provided with a ventilating flue, of a damper controlling the flow of air through the flue, a thermostatic device in the flue, provided with damper operating connections having portions disposed transversely of the passage at the lower inlet of said flue and co-operating obliquely disposed portions adapted to prevent fowls from entering the flue and roosting upon said. operating connections.

10. The combination with a brooder stove, of a canopy supported from the stove, a Ventilating flue at one side of the stove provided with upper and lower openings underneath the canopy, and means for automatically regulating the flow of air through said openings in a manner to allow a predetermined progressive increase in the volume of air entering through the lower opening before the air is admitted through the upper opening.

11. Ventilating means for hover canopies, comprising temperature controlled non-heat generating means for allowing an escape of air from the lower portion of the space enclosed by the canopy, and auxiliary temperature controlled means for allowing an escape of air from the upper portion of said space without passing through the lower portion, whenever the temperature in said canopy enclosed space eXceeds a predetermined degree in excess of that required to permit air to escape from the lower portion of said space.

12. The combination with a brooder heater and a hover canopy for enclosing a hoverii space about said heater, of an upwardlyextending Ventilating passage exterior to the heat generating portion of the heater and within the hover said passage having walls providedwith upper and lower inlets and also having an outlet extending to space enterior to the hover, a damper valve for the upper inlet, and a thermostat in controlling relation to said heater and damper valve, whereby said ventilating passage and thermostat may be utilized to partially control the temperature of the air within the hover space.

13. The combination with a brooder stove having an encircling canopy, of a temperature controlled means for admitting air to the upper portion of the stove independently of the air and gases passing through the combustion chamber and from the bottom portion of the space covered by the canopy within one temperature range and admitting additional air to the stove from the upper portion of said space within a higher temperature range, while maintaining the flow from the lower portion.

1 1. The combination wi h a brooder stove, of a ventilating passage extending along one side of the stove with its bottom open and in proximity to the floor and its upper end leading to the interior of the stove for delivery of air through the smoke outlet, circulation of air through the passage being promoted by heat from the stove and said passage being also provided with a valved air inlet near its upper end, an upwardly tapering conical canopy supported from the stove above said ventilating passage and enclosing the space within which said passage is located, and temperature controlled means for regulating the heat of the stove, the delivery of air from the passage to the stove and the admission of air through said upper inlet, whereby, when both inlets are open, simultaneous entry of air to the passage through both inlets may be promoted by absorption of heat from the stove by the column of air in the passage between said inlets.

15. The combination with a brooder stove having an encircling hover canopy, of temperature controlled means for normally ventilating the canopy covered space from a point near the bottom of such space and independently of the stove draft passages within one temperature range, and means operated by said temperature controlled means for permitting escape of air from the upper portion of said space within a higher temperature range While maintaining the flow from the lower portion.

16. A brooder stove provided with a canopy, and a ventilator flue laterally offset from the stoveand provided with upper and lower inlets for the space enclosed by the canopy, incombination with temperature controlled means for regulating the rate of combustion, and additionally controlling the heat within the canopy by varying the flow of air through the ventilator from both the lower and upper portions of the space underneath the canopy.

17. A brooder stove provided with a canopy and a ventilator flue extending upwardly at the side of the stove and provided with upper and lower inlets for the space enclosed by the canopy, in combination with means for automatically controlling the rate of combustion, said automatic means being adapted to additionally control the heat within the canopy by varying the flow of air through the ventilator from the lower inlet thereof within one temperature range and regulating the flow of air through the upper inlet of the ventilator flue within a higher temperature range when the rate of flow along the floor to the first mentioned inlet would otherwise become excessive.

18. The combination with a stove adapted to consume solid fuel, of a hover extending outwardly and downwardly from the upper part of said stove and forming an annular brooder chamber around the stove a flue extending upwardly from the top of said stove, a wall arranged in the upper part of said stove to separate the same into a hopper for fuel at one side and a flue extension at the other side extending into said combustion chamber said stove having a check draft opening extending through the side thereof into said flue extension and a door operative within said flue extension for con- 7 trolling the passage of air through said opening, said door having a portion projecting through said flue extension in a position to partially control the flow of combustion chamber.

19. A brooder stove provided with a conical top, having a fuel supply door and a hover canopy rotatively mounted upon said conical top and above said door and provided with a door in one side affording access to all parts of the hover space by rotation of the canopy,the upper portion of the canopy being disposed to rotate in proximity to the fuel supply door for convenient feeding of fuel therethrough.

:20. The combination with a stove having a conically tapered top, a hover supported by said top near the upper end thereof, a flue extending upwardly from the upper end of said top above the hover, said stove, immediately underneath the top, being provided with a check draft opening and a wall extending inwardly and upwardly from the margins of said openings to form an air passage within the top of the stove said stove having a damper pivoted to said wall and adapted to swing upwardly across the draft opening into draft checking relation to the stove top.

GEORGE THOMAS MARKEY.

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