Fireplace structure

Details Fireplace structure Fireplace structure

1978-11-30

1984-09-18

Jones, Larry

Stoves and furnaces

Liquid heater

126112, 126285R, 126288, F24B 700

Patent

active

044717555

ABSTRACT:
A fireplace having one or more conduits for directing outside combustion air into the firebox with a movable member adjacent a conduit outlet for normally closing said conduit and having either open or closed positions dependent upon the existence of a pressure difference across said member. A pressure difference caused by a fire in the firebox results in a higher pressure on the side of the member opposite the firebox to cause the member to move to open position. Operating structure is provided for positively closing the member and with the operating structure being operable from the front of the fireplace.

REFERENCES:
patent: 549547 (1895-11-01), Tercy
patent: 1272064 (1918-07-01), Lezius
patent: 1307950 (1919-06-01), Anderberg
patent: 1346883 (1920-07-01), Frederick
patent: 1668911 (1928-05-01), Jowett
patent: 2620984 (1952-12-01), Larsen
patent: 2863443 (1958-12-01), Hoffman
patent: 3111301 (1963-11-01), Ruegsegger
patent: 3180332 (1965-04-01), Grushkin
patent: 4004731 (1977-01-01), Zung
patent: 4184475 (1980-01-01), Faehling et al.

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