Fireplace

Stoves and furnaces – Liquid heater

Patent

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Details

126 77, 126290, D23 97, F24B 118

Patent

active

042730961

ABSTRACT:
A fireplace heating unit provided with a firebox. A vertically elongated hollow member defining in horizontal cross section a square and formed primarily of transparent material, is open at both ends and is secured at its lower end to the firebox. A hollow top section having a relatively small open upper end which defines a chimney and a lower open and conforming to and engaging the upper end of said member has a narrow horizontal peripheral border having the same shape and essentially the perimeter as said square. Shaped openings partially blocked by louvers are formed in the border of the top and bottom section and hinged flaps are mounted outside of the louvers so as to control the amount of air passing into the heating unit through the louvers.

REFERENCES:
patent: 2400900 (1946-05-01), Agricola
patent: 2470430 (1949-05-01), Carter
patent: 3499432 (1970-03-01), Hannebaum
patent: 3616788 (1971-11-01), Hannebaum
patent: 3757766 (1973-09-01), Stevenson
patent: 4108144 (1978-08-01), Wilhoite
patent: 4112913 (1978-09-01), Shimek et al.
patent: 4121560 (1978-10-01), Knight

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