Stoves and furnaces – Stovepipe thimbles
Patent
1987-01-23
1988-01-19
Yeung, James C.
Stoves and furnaces
Stovepipe thimbles
126316, F23J 1300
Patent
active
047199016
ABSTRACT:
There is provided a non-flammable pass-through unit for installation in new construction or as a substitute for a removed section of existing flammable wall in a building for the purpose of allowing the safe installation of a heating appliance, such as a wood or coal stove, and which will reduce the required clearances from a heating appliance to the wall in registry with a flue opening in an existing chimney located behind the wall. The unit comprises a frame composed of non-flammable vertical and horizontal galvanized sheet metal mambers. The metal frame defines an opening which, when the frame is installed, is centered on the axis of the chimney flue opening. A heat resistant, non-flammable tunnel is fitted into the opening and is butted against the chimney. A non-flammable sheathing covers the face of the metal frame, the sheathing defining an opening centered on the common axis for receiving a thimble and a stove pipe and adapted, when installed, to have its surface flush and merging with the surface of the flammable wall.
REFERENCES:
patent: 364651 (1887-06-01), Hutchins et al.
patent: 450355 (1891-04-01), Green
patent: 563587 (1896-07-01), Green
patent: 677447 (1901-07-01), Ethier
patent: 1321675 (1919-11-01), Shurtleff
patent: 1584912 (1926-05-01), Williamson
patent: 1744269 (1930-01-01), Johnson
patent: 4463748 (1984-08-01), Sinkes
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