US2479479A - Heating stove and air feeding means therefor - Google Patents

Description

HEATING STOVE AND AIR FEEDING MEANS THEREFOR Filed Oct. 20, 1944 4 Sheets-Sheet 1 Inventor JOHN A DOA/v,

By @Mddih (ma WW Ma Aug. 16, 1949.

Filed Oct. 20, 1944 J. A. DOAN 2,479,479

HEATING STOVE AND AIR FEEDING MEANS THEREFOR v 4 Sheets-Sheet 2 In ventor JOHN A. DOA/v,

By 3mm Mid WW m Aug. 16, 1949. J. A. DOAN HEATING STOVE AND AIR FEEDING MEANS THEREFOR Filed Oct. 20, 1944 4 Sheets-Sheet 3 min away Em Aug. 16, 1949. J. A/DOAN 2,479,479

I HEATING STOVE AND AIR FEEDING MEANS THEREFOR Filed Oct. 20, 1944 4 Sheets-Sheet 4 Inventor z/UHN ,4. DOA/v,

Patented Aug. 16, 1949 UNITED STATES PATENT "OFFICE BEKTING STOVE AND AI'R'FEEDING THEREFOR John AJDoan, 'St..Louis, Mo. I Application-October L20, 1944, Seria'I'No. 559554! 2 Claims. (Cl. ,126-.-7.-7

This invention .;re1ai65 to a heating @unit, and more particularly to suchaunit as astoveadapted for the heating pf a room or-the like.

A primary object of this invention is .to provide an improvedstove .with:me.ans whereby the draft of the same is forced bynatural .thermal currents to pass over the top of the fire ibed, rather than through 'the same, from the bottom, as is conventional practice.

An additional 'ob'i'ect'df this "invention is to pro vide such a stove withmeans .forpre-heating the air utilized for combustion prior to its contact and mixture with the gases of combustion of the flre bed, whereby to insure :a more eflic'ient combustion, .and resultant increase of heat conveyed to the area to be heated, rather than up the chimney or flue of the stove.

Still another object of this Ilnvention .is to ,provide such a unit so designed as to more nearly complete the combustion of the fuel utilized "therein, thus reducing the ash .content.

Still another object of this 'invention'is to provide a stove so designed as to omit controllable drafts below the fire bed, the drafts being wholly controlled by the upper draft of the stove.

Still another object is to provide a stove which will be sturdy and durable in construction, reliable and eflicient in operation, and relatively simple and inexpensive to manufacture and install.

Other objects reside in the combinations of 2 elements, arrangements of parts, and features of ccn-"trvction, all as will be more fully pointed out hereinafter, and shown in the accompanying drawings, wherein there is disclosed a preferred embodiment of this inventive concept.

In the drawings:

Figure l is a front elevational view of one form of stove embodying features of this invention.

Figure 2 is a side elevational view of the stove shown in Figure 1.

Figure 3 is an enlarged sectional view taken substantially along the line 3-3 of Figure 1, as viewed in the direction indicated by the arrows.

Figure 4 is an enlarged sectional view taken substantially along the line 4-4 of Figure 2, as viewed in the direction indicated by the arrows, and

Figure 5 is an enlarged sectional view taken substantially along the line 55 of Figure 2, as viewed in the direction indicated by the arrows.

Like reference numerals refer to like parts throughout the several views of the drawings.

Having reference now to the drawings, there is e a ly indi ated at I" a 5'99"? m y meterablyconstmcted nfisteeLiorthe'ilike, and being comprisedcofzside walls forming an oval-shaped .body portion, -'a bottom 1:2 zandia top 13.

Positioned interior-1y :of the body :wall H :is a flange "14, secured thereto inanyidesired manner, upon which is adapted to rest :a :grate I 5. surrounding the interior-10f the body above the grate 11:5 and extending a substantial idistance thereabove is a :shell :Hi forming zan inner wall (entirely surrounding the :combustion :chamber.

Positioned in the stove body below grate I5 is *anas'h receptacle l 'l,:adaptedito extendiforwardly intoarectangular section 1:8 :(see .Fig. 5a of the stove body, which portion 18 is Provided with a door 19 hinged, as at 10, and provided with a latch 2|, adapted to permit the removal of the ash receptacle when :the same :is filled.

The stove 'bndy :iszadaptad vto be supported on legs 22, :or "the like.

Positioned above the upper extremity of inner wall I6 are two ductsnriairyentfi 215. which may be integral with the stove body, or suitably secured thereto in any desired manner, and which extend from inlets 26 suitably positioned at spaced points on the front of the stove to outlets 21 positioned adjacent the rear of the stove, and terminating in downwardly turned elbows 29 (see Fi 4).

The inlets of the ducts 26 comprise apertures having bars 30, or the like, positioned thereacross, which bars contain threaded apertures adapted to be engaged by the threads of bolts 3| (see Fig. 5) suitably secured to circular damper members 32 provided with handles 33. Thus, it will be seen that rotation of the handles 33, through the coaction of the bolts 3| and their associated threaded apertures, serves to open or close the inlets 26 of the members 25, the quantity of air admitted thereto being varied in accordance with the spacing of the dampers 32 from the inlets.

The outlets 21 are spaced a substantial distance apart, beneath an arcuate baffle 35 closing the rear portion of the stove body Hi, and being positioned therebelow, a second vertical bafiie 36 being positioned at a mid-point thereof and extending to the top of the stove (see Figs. 3 and 4). A flange 31 surrounds an aperture 38 in the rear .of the stove body above the bailie 35, and connects with a flue or outlet 39.

A second flange 4|] surrounds an aperture or opening 4| on the top of the stove l3, in front of the bafile 35, which aperture provides a means for inserting fuel into the stove. A cover 42 provided with a flange 43 of less diameter than the flange 40, and having a handle 44, is adapted securely to close the opening ll when the use of the same for insertion of fuel into the structure is not necessary.

Now, from the foregoing the operation of the device should be readily understandable. Fuel is positioned on grate l5, and ignited in any suitable manner, and the drafts 32 adjusted to open position. The air is then sucked inwardly through inlets 26, air ducts 25 and pass outwardly through outlets 21 in a downward direction. As the air passes over the combustion chamber and the fire therein, it is pro-heated to a relatively great extent, in such manner that when it emerges through the outlets 21, it readily ignites when mixed with the gases of combustion emanating from the fire. The draft then passes over the fire bed, outwardly and upwardly over the bafile 35 and around the sides of the bafile 36, finally escaping through the aperture 38 to the flue 39. By this method, and due to the fact that the air is heated to a burning stage before it is passed to the fuel bed, the fuel is caused to burn downwardly instead of upwardly. Under the reverse conditions of burning fuel, that is, with an under draft, the gases and smoke from the fuel are drawn upwardly and forced out of the chimney unburned, thus causing a considerable waste of fuel, as a large percentage of the heat from the fuel is contained in the smoke and gases. By the instant method, it will be seen that the air is circulated downwardly through the fuel, adjacent the inlets, and finally upwardly therethrough toward the front or cooler portion of the fire bed, thus effecting a relatively greater combustion of the fuel contained in the stove.

From the foregoing it will now be seen that there is herein provided an apparatus accomplishing all the objects of thi'sinvention and others, including'many advantages of practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I claim:

1. A stove comprising a body, a grate in said body, a sheet metal lining in said body spaced equidistantly from the walls thereof and having integral upper and lower flanges engaging said body to provide a dead air space between said lining and body, said lining positioned above said grate forming the walls of a combustion chamber, an outlet for combustion products in the top of said body, a horizontal bafile extending between and being joined to opposite sides of said body beneath said outlet, a vertical bafiie medially of the front edge of said horizontal baffle and engaging said top, and air inlet conduits extending above said lining and about the walls of said body, said conduits having discharge openings beneath said horizontal bafile and directed downwardly toward said grate.

2. The combination of claim 1 wherein said horizontal bafile is concaved downwardly from its longitudinal medial line.

JOHN A. DOAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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