Gas tight chimney access door and shield for use therewith and c

Details Gas tight chimney access door and shield for use therewith and c Gas tight chimney access door and shield for use therewith and c

1983-06-03

1985-08-06

Joyce, Harold

Stoves and furnaces

Ash discharge and collecting

52 19, F23J 1308

Patent

active

045329150

ABSTRACT:
A chimney access door assembly for mounting on existing chimneys to permit convenient cleaning includes a frame member defining an aperture therein and which is mounted in the opening of the chimney and a closure member dimensioned to overlie and close the aperture in the frame member and extend about a marginal portion of the frame member about the aperture. Gasket means is provided between the adjacent surfaces of the closure member and frame member and extends about the frame member aperture so as to substantially prevent passage of smoke, fumes and the like. In one embodiment, the closure member is provided with a recess for seating on its inside surface insulating means for use of the access door assembly on an exterior wall. To permit cleaning with a minimal passage of dust and dirt passage outwardly of the opening the chimney, a dust cover may be substituted for the closure member, and the dust cover provides a sleeved opening for insertion of the cleaning tool and another aperture for removal of dust, soot and the like.

REFERENCES:
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patent: 679830 (1901-08-01), Carter et al.
patent: 1457450 (1923-06-01), Matthews
patent: 2196934 (1940-04-01), Morgan
patent: 2219962 (1940-10-01), Reynolds et al.
patent: 2397470 (1946-04-01), Cauchaner
patent: 2398393 (1946-01-01), Paulette
patent: 4062344 (1977-12-01), Mayes
patent: 4118894 (1978-10-01), Kennedy et al.
patent: 4159016 (1979-06-01), Johnson
patent: 4193237 (1980-03-01), Jankowski
patent: 4287815 (1981-09-01), Henderson

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