US2337847A - Revertible draft stove - Google Patents

Description

. 28, 1943. E. w. CONKELL 2,337,847

REVERTIBLE DRAFT STOVE I Filed Aug. 26, 1940 3 Sheets-Sheet 1 Dec. 28, 1943. E. w. CONKELL 2,337,847

REVERTIBLE DRAFT STOVE Filed Aug 26, 1940 3 Sheets-Sheet 2 Dec. 28, 1943. E. w. CONKELL REVERTI'BLE DRAFT STOVE Filed Aug. 26, 1940 3 Sheets-Sheet 3 Patented Dec. 28, 1943 REVERTIBLE DRAFT STOVE Elias W. Conkell, Birmingham, Ala.. assignor of one-half to Jessie L. Lambert, Birmingham,

Ala.

Application August 26, 1940, Serial No. 354,187

1 Claim.

This invention relates to improvement in revertible draft magazine heating stoves and consists in the unusual arrangement, combination and construction of parts hereinafter described.

The main object is to provide a stove so that the greatest efficiency may be obtained from the fuel consumed.

In the accompanying drawings Fig. 1 is a front elevation of the assembled furnace. Fig. 2 is a part top plan view. Fig. 3 is half sectional elevation on center line. Fig. 4 is a part sectional on line 4& in Fig. 3. Fig. 5 is half sectional elevation on center line at 90 degree angle to other center line. Fig. 6 is a part sectional on line i6 in Fig. 5.

Similar reference numerals refer to similar parts throughout the several views.

By referring to the drawings it will be observed there is a fire pot indicated by I and 2 that may be made in one or more pieces. It is supported by a main ring or rim 3 in the stove lower portion which also supports an ash pan 5. Attached by welding or other means to the rim 3 are bracket tracks 8 for balls 1 that carry movable part ii) of the fire pot with the rocker grate bars 6. These grates 6 and movable part 40 may be removed through the door 4 when necessary. Part it! that is movable has brackets 45 to support the shaker bar operated by the crank 9. The main radiator or heat shell I0 is corrugated to afford greater heating as its inner surface is in direct contact with the fire gases. This radiator extends from the bottom H to a top flange it except for the door spaces. Above the fire ot l and 2 is a magazine 33 which is charged with fuel by removing the top 31 and inner cover &3. Magazine 33 has a flange 34 that fits between top 26 of outer shell 39 as shown at 35, 36 and 42 to form a joint. Louvers 38 are for air passage. The inner edges of radiator I0 end at 24; in contact with a fire Wall 21. There is a main flue I? with a damper door It hand operated by the handle H. To better control the draft the stove has an oblong bafile member with sides 22 ending short of the stove front as indicated at as provided with holes 3!) for gas circulation. The sides 22 are held together at one end by a cross rod 29 and at the other end by a face part 23. The bottom of the stove shell has opening 28 through which the said baffle assembly is passed to rest on the bottom 32 of the stove. The front 23 of the bafile has a latch 31 to keep the baiile inserted and in place. The top of the ash compartment is indicated by 25. The Stove has a main door l3, double bottom doors 4 with draft openings 44, and legs 4!. The draft is automatically controlled by a thermostat indicated by IR that operates a damper l9 over an opening I5 that has an inspection door l4. The fire shell extends from bottom 26 above lower gas chamber to the heighth indicated by 2'! or may be extended higher but must not come in contact with the interior top 21 of fire compartment.

When fire is started directly draft door It leading to flue is opened to allow free passage of smoke and gas to said main flue ll. After the fire is well started this draft door It is closed. The gas, and smoke if any, then travel upward and over inner fire shell or wall 21, then down between the fire Wall 21 and inner surface of the radiator IE to main bottom and along through and around baflle assembly 22 and then up to main fiue I1. By this arrangement of parts the heat from the fire rises upward, then is pulled down, then up and out. In this long passage it is slow moving and causes long contact with the parts that are adjacent the air for heating.

It is intended to manufacture the furnace out of any material that may be best suited for the purpose.

While I have shown the preferred embodiment of my invention I do not wish to limit myself to the precise and exact details of structure but reserve the right to make any and all modifications and changes so long as I remain within the spirit and scope of the following claim.

Having described my invention I claim:

A revertible draft stove comprising, the combination of a fire not having grates therein, an inner casing supporting said fire pot and forming an ash chamber therebelow, an intermediate casing surrounding the inner casing and spaced therefrom to form a down draft passage leading to a sub-chamber beneath the ash chamber, an outer casing surrounding the last mentioned casing and forming passages for air to be heated, means forming a flue leading upwardly from said sub-chamber to a vent opening in said outer casing, thermostatically controlled damper means providing communication between the ash chamber and said flue, a damper in an upper portion of said intermediate casing providing direct communication between said fire pot and vent, a draft baffle in said sub-chamber, said draft baflle comprising two parallel sides with vent holes in same and held together at one end by a cross member as a brace and closure, and joined at the opposite end by a cross rod.

ELIAS W. CONKELL.

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