Circulating-air heating stove

Claim 1

A free-standing heating stove including in combination: a combustion chamber with front, back, top, bottom and side walls, said back wall being spaced inwardly from the ends of said bottom, top and side walls; an auxiliary wall spaced from said back wall and attached to said top, bottom and side walls to provide an airspace between said back wall and said auxiliary wall for passage of air to be heated, an inlet near the bottom of said airspace for the entry of air into such airspace; a plurality of heat tubes extending across the upper portion of said combustion chamber between corresponding openings in said back wall and front wall to provide passages for air from said airspace to exit from the openings in said front wall; a baffle plate located above said plurality of heat tubes and inclined upwardly at an acute angle less than 15 degrees therefrom to increase the turbulence of combustion products from the combustion chamber as these products rise therefrom, said baffle plate overlying the major cross-sectional area of said stove over said heat tubes and being spaced from said front, back and side walls of said combustion chamber; a flue located in said top wall substantially centered above said baffle for forming an outlet for the products of combustion; said front wall having a rectangular opening in it located beneath the openings terminating said heat tubes and extending substantially from side to side for permitting viewing of a fire therein, if desired; and first and second doors pivotally attached on opposite sides of the rectangular opening in said front wall for cooperatively closing said rectangular opening in a closed position and for pivoting back substantially parallel to opposite side walls of said heating stove in an open position to permit use of said heating stove as a fireplace with said doors in the open position and as a heating stove with said doors in a closed position.