Forced air floor furnace

Claim 1

A FLOOR FURNACE HEATER COMPRISING: AN OUTER CASING HAVING OPPOSED PAIRS OF SIDE AND END WALLS AND MEANS FOR SUPPORTING THE OUTER CASING WITH ITS UPPER END GENERALLY COEXTENSIVE WITH A FLOOR, A TRANSVERSE PARTITION WALL HAVING AN OPENING THEREIN AND JOINED TO OPPOSED SIDE WALLS DEFINING THEREBY A BLOWER CHAMBER AND AN AIR HEATING CHAMBER, SAID BLOWER CHAMBER BEING OPEN AT ITS UPPER END AND ADAPTED TO BE LOCATED ADJACENT A FLOOR AND SAID AIR HEATING CHAMBER BEING OF CLOSED CONSTRUCTION AND INCLUDING A TOP WALL AND A BOTTOM WALL JOINED TO SAID SIDE WALLS; GRATE MEANS CONSTRUCTED AND ARRANGED TO BE CARRIED ON THE TOP OF SAID OUTER CASING ABOVE SAID BLOWER CHAMBER; A BLOWER MOUNTED IN SAID BLOWER CHAMBER FOR RECEIVING RETURN AIR FROM THE SURROUNDING AIR SPACE AND DISCHARGING THE RETURN AIR INTO SAID AIR HEATING CHAMBER THROUGH THE OPENING IN SAID TRANSVERSE PARTITION WALL; A PLURALITY OF COMBUSTION CHAMBER HOUSINGS POSITIONED WITHIN SAID AIR HEATING CHAMBER FOR BURNING FUEL THEREIN AND DIRECTING THE COMBUSTION PRODUCTS UPWARDLY AND THENCE DOWNWARDLY AND OUT OF SAID AIR HEATING CHAMBER, SAID COMBUSTION CHAMBER HOUSINGS EXTENDING ALONG A SUBSTANTIAL PORTION OF THE LENGTH OF SAID AIR HEATING CHAMBER AND BEING JOINED AT THEIR LOWER ENDS WHILE SPACED APART FROM ONE ANOTHER AT THEIR UPPER ENDS, WHEREBY AIR IS HEATED WHILE MOVING PAST THE LENGTH OF THE EXTERIOR SURFACES THEREOF FROM SAID BLOWER; BAFFLE MEANS SPACED INTERMEDIATE THE OPPOSED SIDE WALLS OF SAID AIR HEATING CHAMBER TRANSVERSE TO SAID PARTITION WALL AND BETWEEN SAID SIDE WALLS AND SAID PLURALITY OF HOUSING FOR DIRECTING AIR SUBSTANTIALLY ACROSS SAID AIR HEATING CHAMBER, SAID BAFFLE MEANS SUBSTANTIALLY ABUTTING SAID TRANSVERSE PARTITION WALL AND BEING SPACED FROM THE CASING END WALL WHICH FORMS THE END WALL OF SAID AIR HEATING CHAMBER AND DEFINING THEREBY A SUBSTANTIALLY U-SHAPED OUTLET PLENUM WITH RESPECT TO SAID OPPOSED SIDE WALLS, AND MEANS FOR CONNECTING OUTLET DUCT MEANS TO SAID OUTLET PLENUM TO THEREBY DISCHARGE THE HEATED AIR.