US449218A

US449218A - graves

Info

Publication number: US449218A
Authority: US
Publication date: 1891-03-31
Anticipated expiration: 1908-03-31

Description

(No Model.) I

C. GRAVES.

STOVE. No. 449,218. Patented Mar. 31, 18911.

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UNITED STATES PATENT OFFIGEs' CHARLES O. GRAVES, OF IVASHINGTON, KANSAS.

STOVE.

SPECIFICATION forming part of Letters Patent No. 449,218, dated March 31, 1891.

Application filed April 15, 1889. Serial No. 307,298. (No model.) i

To aZZ whom it may concern.-

Be it known that I, CHARLES O. GRAVES, a citizen of the United States, residing at VVashington,in the county of Washington and State use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to combined heating and cooking stoves; and it consists in a stove provided with an air-heating drum and an oven.

The particular arrangement and construction of parts which constitute my invention are hereinafter described, and are pointed out in the claims.

The drawing represents the vertical section of a stove embodying my improvements, the lower part of the fire-pot and the base of the stove being omitted for want of room on the sheet.

The fire-pot A. is of any ordinary construction and may be lined with fire-brick a, as usual. Above the fire-pot is a straight cylindrical section B, containing a door I) for the introduction of fuel. In practice I make this section about one foot high. The next section (3 flares outwardly until its diameter at its upper edge is about one-third greater than that of the section B. The wall of section 0 may be-frusto-conical, as shown,or curved,as indicated in dotted lines. It may be made integralwith section B or separate therefrom. The section D above section 0 contracts to a point (I, at which level it is of about the same 7 diameter as the section B. Above this level .ber F is an oven L.

indicated in dotted lines, but is somewhat smaller, so as to leave an annular space between it and the inside of the stove-bod y. The diameter of the air-heating chamber at its largest part is greater than that of the section B of the stove-body, so that the cylindrical column of smoke and hot gases rising'from the fire-pot will all be intercepted by the surface of the air-heating chamber. The short arrows 00 indicate the course of the rising column of smoke, flame, and hot gases. This insures a greater-heating effect than would be the case if the chamber were less in diameter than the column of hot gases.

The bottom of the chamber F connects with a large curved air-inlet flue G, which enters the stove above the fire-pot through the section B. This location exposes it to the fiercest heat of the fire, so that the air entering through it becomes heated before it reaches the chamber F, where its temperature is quickly raised to a high degree. In order to cause the air to come in contact with the walls of the chamber F, and also to prevent it from passing too rapidly through the chamber, I place within the chamber over the upturned end of the inlet-flue G two or more inverted conical deflectors H II, alternating with one or more inwardly projecting downwardly-in clined annular battle-plates I, secured to the inner surface of the air-heating chamber. The deflectors H II may be suitably supported by braces attached to the walls of the chamber or to the baffle-plates, the deflectors being of such a diameter as to leave a narrow annular space for the passage of the heated air be tween the edge of the deflectors and theheated walls of the chamber.

The top of the air-heating chamber is about on a level with the contracted portion of section D of the stove-body. It maybe continuous or may have a central opening closed by a removable plate F. Suitable outlet-fines K, which may have dampers in them, if desired, permit the heated air in the chamber F to escape into the apartment in which the stove is placed. Above the air-heating cham- The top of the chamber may constitute the bottom of the oven. The

walls of the oven rise from the top of the chamber F to the annular top E, leaving a space all around the oven inside of the section D of the stove-body for the circulation of hot smoke and gases which escape through the smokepipe M. In addition to the heat thus imparted to the oven hot air from the chamber F may be admitted to the oven by removing the plate F.

The lid E constitutes the top of the oven, though this lid may be dispensed with and a solid top substituted, in which case a door must be provided through the section D and the wall of the oven. In any convenient place, preferably in the lid E, is inserted a thermometer N,with its bulb inside the oven and its tube and scale outside. The attendant can thereby ascertain the exact temperature of the airin the oven without opening the door.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, with a stove, of an air heating chamber F inside thereof, two or more inverted conical deflectors H II within the air-heating chamber, and tho inwardly-projecting downwardly-inclined baffle-plate I, located between and substantially parallel with the deflectors. substantially as described.

2. The combination, with a stove, of an airheating chamber F, located inside thereof and directly above the fire-pot, a cur ed air-inlet flue G entering the stove above the fire-pot and communicating with the lower end of the air-chamber, exit-flues K, leading from the to the top of the stove, the top of the air-chamber forming the bottom of the oven and being provided With an opening closed by a cover F for the passage of heated air into the oven, as and for the purpose set forth.

3. The combination, with a stove, 'of an airheating chamber F, located inside thereof and directly above the fire-pot, a curved air-inlet flue G entering the stove above the fire-pot and communicating with the lower end of the airchamber, an inverted conical deflector H, suspended inside the air-chamber with its apex substantially in line with the center of the mouth of the flue G and its base lying near to and substantially parallel with the walls of the air-chamber, and an oven L, 10-

cated above the air-chamber and extending to the top of the stove, the top of the air-chamber forming the bottom of the oven, substantially as described.

In testimony whereof I aflix m y signature in presence of two witnesses.

CHARLES O. GRAVES. Witnesses:

W. W. STEWART, L. ROOT.