F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
98/45
F23L 17/02 (2006.01) F23J 13/08 (2006.01) F23L 11/00 (2006.01)
Patent
CA 1172895
-13- "ENERGY SAVING CHIMNEY CAP ASSEMBLY" ABSTRACT OF THE DISCLOSURE Even when no fire is burning in a grate, there is a consistent heat loss from the house through the chimney. Attemps have been made to detachably seal the chimney at the upper end thereof but condensation and freezing often occurs in cold climates tending to cause an ice seal to form between the closure plate and the seat thus making it difficult to open when it is desired to use the fireplace. The present device consists of a cap assembly engageable within the upper end of the chimney having a seat on the main body portion and disc or plate secured to a rod mov- able vertically. It may be actuated from a sealed seat en- gaging position to an open seat disengaging position and the plate is normally maintained open by means of a spring. Actuation is by means of a cable attached to a rod which extends downwardly to the fireplace. An asbestos seal is provided to reduce icing but also, when closed against pressure of the spring, the disc "oilcans" downwardly so that, when released, the oilcanning action assists in breaking any ice which may have formed on the seal.
384752
Ade & Company
Ross James
LandOfFree
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