Abstract A fireplace stove comprising a generally rectangular metallic housing adapted to extend into a fireplace opening, with penetration being limited by a flange around the housing which engages and seals against the face of the fireplace. A metallic inner fire shell is closely spaced within the inner surfaces of the housing to provide airflow passages between them. An air inlet with a blower is located at the lower end of one side of the housing and a narrow, hot air outlet extends across the top. Air is directed to flow almost completely around the fire shell for maximum heating. An air inlet with a blower is located at the lower end of one side of the housing and a narrow, hot air outlet extends across the top. Air is directed to flow almost completely around the fire shell for maximum heating. An access door is held in sealed engagement by a spring latch and a combustion air duct in the door extends into the interior so that the air entering thereto is preheated before actual contact with the fire. A butterfly valve damper is mounted in the duct and may be operated from outside the box.
In a fireplace stove having an access opening therein: a door hinged on said stove to open and close said access opening: a latch shaft journalled on and disposed parallel to said door; means for turning said latch shaft; a pair of metal strip latch fingers having substantial flexural strength extending outward from said front wall in converging relation with a space between the distal ends thereof to receive the end of said latch shaft therebetween; said end of said latch shaft being narrow along one cross-sectional axis to be received between said fingers and relatively wide along the other cross-sectional axis to bias the converging fingers apart when said latch shaft is rotated through about 90°.
Claim 2
Dependent Claim
117 words
In a fireplace stove having an access opening therein: a door hinged on said stove to open and close said access opening: a latch shaft journalled on and disposed parallel to said door; means for turning said latch shaft; a pair of metal strip latch fingers having substantial flexural strength extending outward from said front wall in converging relation with a space between the distal ends thereof to receive the end of said latch shaft therebetween; said end of said latch shaft being narrow along one cross-sectional axis to be received between said fingers and relatively wide along the other cross-sectional axis to bias the converging fingers apart when said latch shaft is rotated through about 90°.
Claim 3
Dependent Claim
27 words
The fireplace stove door defined by claim 1 wherein: said converging fingers have flexural strength to bias said latch shaft and door firmly against said front wall.
Claim 4
Dependent Claim
37 words
The fireplace stove door defined by claim 2 wherein: said converging fingers engage the remote edges of said end of the latch shaft so that the flexural strength thereof pulls said shaft end toward said front wall.
Claim 5
Dependent Claim
49 words
The fireplace stove door defined by claim 1 including: a vent opening in said front door; a butterfly valve damper rotatably mounted on said door to open and close said vent opening by rotating through about 90°; and means on the outside of said door for turning said damper.