Fireplace structure

Details Fireplace structure Fireplace structure

F - Mech Eng,Light,Heat,Weapons

24

B

126/99

F24B 5/00 (2006.01) F24B 1/19 (2006.01)

Patent

CA 1121679

ABSTRACT OF THE DISCLOSURE 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 posi- tions 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 struc- ture being operable from the front of the fireplace. 1.

330621

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