US2384596A - Magazine stove - Google Patents

Description

- Sept. 11, 1945. w. A. BURKE ETAL MAGAZ INE STOVE Filed Aug. 18, 1943 2 Sheets-Sheet l luvsvin'ons \JnLuAr-a A. BURKE. HARRY J'- FRESE, nMAM o. FRESE ATTORNEY Sept. 11, 19 -w. A. BU KE ET AL MAGAZINE STOVE I '2 Sheets-Sheet 2 F'iled Aug. 18, 1943 INVENTORS WILUAMA. BURKE GARRYJZFRESE BY ILLIAM O, FRESE ATTORNEY Patented Sept. 11, 1945 MAGAZINE STOVE William A. Burke, Harry J. Frese, and William Otto Frese, Portsmouth, Ohio, assignors to The Ohio Stove Company, Portsmouth, Ohio, a corporation of Ohio Application August 18, 1943, Serial No. 499,090

6 Claims.

This invention relates to heating appliances, and particularly to heating stoves of the magazine type wherein the fuel is loaded into the magazine of the stove through the top wall. Usually, a large quantity of fuel is loaded into the combustion chamber of the magazine type of stove upon each loading of the stove. The fuel will be consumed from the bottom upwardly of the mass of fuel within the magazine of the stove, and thereby provide a prolonged period of heating that can be accomplished by a single loading of fuel into the stove.

It may be well understood that when fresh fuel is loaded within a magazine type of heating stove, requiring that the door on the top wall of the stove be opened, that the fresh fuel will ignite quickly and smoke considerably due to the fact that it is placed upon a hot fuel bed and results in the rapid and incomplete combustion of the fresh fuel. The light combustible materials in the coal, such as the oil and gases, as well as the coal dust or slack that is passed into the magazine with the loading of the coal will be consumed rapidly and incompletely and thereby produce a relatively large quantity of smoke in the upper part of the magazine chamber.

It is therefore an object of this invention to provide a smoke bafile in the upper part of the combustion chamber of the stove that will prevent smoke from being emitted through the open door in the top of the stove when it is opened for inspection of the fuel bed, or for refilling the combustion chamber.

It is still another object of the invention to provide a magazine type of heating stove that is loaded through the top wall thereof wherein there is provided a smoke baffle that is adapted to partially cover the door opening at all times when the door is in open position except when fuel is actually being loaded into the combustion chamber of the stove, the fuel itself being adapted to operate the smoke baflle so as to move it relative to the door opening whereby to increase the size of the door opening when the fuel is being loaded into the combustion chamber of the stove.-

It is still another object of the invention to rovide a heating appliance of the magazine type wherein fuel is adapted to be loaded into the combustion chamber through the top wall thereof, wherein a damper member is provided for partially closing the door opening in the top wall of the heating appliance at all times when the top door is in open position so as to reduce the area of the door opening that is actually exposed for emission of smoke and gases through the door opening, and which narrow door opening affects an increased down draft of air through the door opening so that smoke or gases prevailing adjacent the door opening when itis open will be driven away from the door opening so that they will not discharge through the door open ngwhen the door is in open position.

Another object of the invention is to provide a heating appliance of the magazine type wherein the fuelis loaded through the top wall of the heating appliance that is provided with means for varying the size of the door opening whereby a large door opening may be had for loading fuel into the combustion chamber of the heating. appliance, and a relatively small door opening may be had for a general inspection of the. condi-. tion of the fuel bed within the heating appliance. Further objects and advantages will become apparent fromjthe drawings and following description. V p

In the drawings: I a g Figure 1 is a vertical cross sectional view through a magazine type heating appliance incorporatingfeatures of this invention, showing the smoke bafile closing off a portion of the door penin ,7 Figure 2 is a vertical .cross-sectionalviewv of a portion of the heating stovesimilar to Figure 1 showing the positionof the smokebafllewhen. fuel is being loaded .intothe combustion cham er of. the stove. v

Figure 3 is a top plan. view of the heating stove shown in Figure 1, but having the. door removed from the top of the, heating appliance,"

showing the small opening providedfor inspection of the fuel bed within the combustion chamber.

Figure 4.is a top plan view similar to. Figure 3 showing the increased door. opening provided.

when the smoke bafile is in positionas illustrated in Figure 2 for loading of the fuel In this invention the heating appliance consists of a cylindrical shell it! that forms the main.

structural body member of the ,heatingappl ance: Legs II are provided for supp rti the heating appliance in spaced relationship to the floor. The shell H! is divided into a combustion chamber l2 and an ash chamber l3. A grate I4 is disposed transversely between the combustion chamber I2 and the ash chamber l3 to support the fuel that is charged into the com,- bustion chamber I2. Suitable and conventional openings 15 are provided in the grate l4 through which air is supplied to the fuel that is placed thereupon.

The combustion chamber I2 is lined with fire brick I 6, or other suitable conventional material that preserves the cylindrical shell ID from the intense heat of the fire bed and which retains heat over a long period of time for radiating the heat from the heating appliance. The fire brick I6 may be supported upon a ledge I! that extends transversely from the shell 10 adjacent the grate M.

The ash chamber I3 is provided with the usual ash door l8, and an ash receptacle I9 is carried upon the support members within the ash chamber for receiving ash that drops through the grate l4.

The upper edge of the cylindrical shell 10 supports a top cover member that has a door open-- ing 26 therein that is closed by means of the door 21 hinged upon the cover member 25in any suitable and conventional manner. The door opening 26 extends in a substantially horizontal direction across the top of the top wall member 25 so that fuel may be readily dumped through the door opening 26 into the combustion chamber [2.

It will be quite apparent that if the substantially horizontally disposed door opening 26 is left completely unprotected that smoke, gas or other fumes may discharge through the door opening 26 when the door 21 is opened. To prevent the discharge of such smoke, gases or other fumes, a baffle plate 28 is positioned adjacent the top edge 29 of the door opening 26. The baffle 28 has an arm 38 extending from opposite sides thereof that engages a pivot block 3| secured to the top wall member 25 by means of the bolt 32.

The baiiie member 28 carries a counter weight 34 that extends downwardly and rearwardly therefrom as illustrated in Figure 1. The counter weight 34 is secured to the baflle 28 by means of the bolt 35. The counter 34 is provided with a mass weight 36 that is sufficiently heavy to overbalance the mass of the baffle 28 so that it will rotate downwardly in a clockwise direction as viewed in Figure 1 to position the baflle 28 across a portion of the door opening 26 in the manner as illustrated in Figure 1. This position of the baflle 28 is what may be termed a normal position and, is the position that it retains under all circumstances except when fuel is being loaded into the combustion chamber l2, or has been manually displaced from this position.

It will be noted that when the baffle 28 is in the position as illustrated in Figures 1 and 3 that the efiective area of door opening 26 is substantially reduced so that at least one-half of the area of said opening has been blocked or cut off.

When the door 2'! is now opened for any purpose whatever, such as an inspection of the condition of the fuel bed, the draft through the combustion chamber illustrated by the arrows 48 will cause an induced draft through the open area of the door opening 26, thereby sweeping fresh air into the upper ,portion of the combustion chamber as illustrated by the arrows 45. This induced draft of the fresh air into the upper part of the combustion chamber adjacent the area of the door opening 26 that is uncovered at this time by the incomplete closure of the door opening 26 by the baffle 28, sweeps the smoke, gases or other fumes away from the open area of the door opening 26 to provide a relatively clear area 46 as illustrated in Figure 1. This induced draft through this narrow door opening prevents the smoke or gas emitting through the opening While the door 21 is in open position. It will also be quite apparent that with the area of the door opening reduced in this manner that the draft that is occasioned through the reduced area of the door opening 26 will be substantially greater than should the entire area of the door opening be available for the admission of fresh air.

In order to provide for an enlarged dOOr opening area, and thus provide an unobstructed door opening when loading fuel into the combustion chamber l2, the baffle 28 is swingable in counterclockwise direction from the position of Figure 1 to that as illustrated in Figure 2. This movement of the bafile 28 can be occasioned merely by dropping a quantity of fuel into the door opening 26, the weight of the fuel being suflicient to overcome the moment of the weight 36 to swing the baflie 28 to the position as illustrated in Figure 2. As soon as the weight of the fuel is removed from the baiile 28 it will automatically return to the position as illustrated in Figure 1 whereby to reduce the area of the door opening 26 and thus prevent an emission of smoke that is created at the time fresh fuel is dropped upon a hot fuel bed in the combustion chamber l2. It will be noted that the counterweight 34 has been positioned so that the draft through the flue 50 of the stove is not interfered with in any way so that the gases and smoke have a free and unobstructed path into the flue 50. Thus, with a normal draft through the flue causing the gas and smoke in the combustion chamber l2 to rise through the same, when the door 21 is open, the down draft through the narrow area of the door opening 26 will sweep the gases clear of the door opening.

While the apparatus disclosed and described herein constitutes a preferred form of the invention, yet it is to be understood that the apparatus is capable of mechanical modification without departing from the spirit of the invention, and that all such modifications as fall within the scope of the appended claims are intended to be included herein.

Having thus fully described our invention what we claim as new and desire to secure by Letters Patent is:

1. In a heating appliance, a combustion chamber, a top for said combustion chamber having a substantially horizontally disposed opening therein, a door to cover said opening, flue means communicating through a second opening in said top with said combustion chamber and through which gases are discharged therefrom, and baffle means pivotally mounted between said openings and adjacent one edge of said door opening, counterweight means connected to said baiile means for normally positioning said baffle means in a substantially horizontal position to close a part of said door opening whereby to reduce the area of said door opening and prevent discharge of gases through said reduced area when said door is opened, said counterweight means acting to direct combustion gases to said second opening when said baflle means is pivoted downwardly.

2. A heating appliance of the magazine type that includes, means forming a combustion chamber having flue opening means in the top portion thereof whereby the gases in said combustion chamber move upwardly through said combustion chamber toward said flue opening, a substantially horizontally positioned door opening in said combustion chamber through which fuel is admitted into the upper portion of said combustion chamber, a door for closing said door opening, a bafile means swingably mounted adjacent one edge of said door opening and a counterweight to normally urge said bafile means to obstruct a part of said door opening whereby to reduce the effective open area of said door opening.

3. In a stove, means forming a combustion chamber, a cover for said chamber, there being a substantially horizontal opening in said cover through which fuel may be charged into said chamber, a door closing said opening, there being a second opening in said cover for connection with a flue, said door being hinged to-said cover on an axis substantially horizontal and centrally of said cover between said openings, a battle member hinged to the inside of said cover on an axis closely adjacent and parallel to the axis of said door, said baiile being swingable on its axis to a position where it at least partially obstructs said door opening, and yielding means urging said bafiie to opening-obstructing position.

4. In a stove, a vertical wall member closed on itself to form a combustion chamber, a cover for said chamber supported on said wall, said cover having a substantially horizontal opening through which fuel may be charged into said chamber, a door adapted to cover said opening or to be swung back on a substantially central horizontal axis, there being a second opening in said cover for connection with a flue a bafile plate pivoted on the lower side of said cover on an axis adjacent and substantially parallel to the axis of said cover and between said openings, and normally obstructing said fuel opening, and pendulous means attached to said plate and yieldingly urging the same to a position where it obstructs said fuel opening, said bafile being pivoted downwardly into the chamber by the fuel as it is charged through said opening.

5. In a stove having side walls forming a combustion chamber and a cover for said chamber closing the same at the top, there'being a substantially D-shaped fuel opening in said cover with the straight edge of said D substantially diametrically located with respect to said cover, there being a smoke-pipe opening in said cover diametrically opposite said fuel opening, a baflie having a pivot axis substantially parallel to and closely adjacent said straight edge, pendulous plate means connected with said baflie and urging the same to a position obstructing said fuel opening, said plate means being so connected with said baffie that, when fuel is charged through said opening, said baflle is moved downwardly to thereby move said plate to form a wall directing combustion gases to said smoke-pipe opening.

6. In a stove a closed vertical Wall forming a heating chamber, a cover for said chambersupported on top of said wall, said cover having diametrically opposite openings adjacent its periphery through one of which fuel is charged to said chamber, and the other of which is for connection to a smoke-pipe, a door for said fuel opening, means hinging said door to said cover on a substantially horizontal axis centrally of said cover whereby said cover may be raised about said axis to permit fuel to be charged into said chamber, a bafile hinged within the chamber on an axis adjacent and below the axis of said door, and a pendulous plate connected to said baflle to urge said baflie to a pivotal position obstructing said fuel opening, said bafile being pivoted downwardly by fuel as it is charged through said opening, to thereby pivot said plate adjacent said smoke-pipe opening to form a smooth passage for combustion gases to said smoke-pipe opening.

WILLIAM A. BURKE.

HARRY J. FRESE.

WILLIAM O. FRESE.

Images