Stoves and furnaces – Hot-air furnaces – Casings
Patent
1978-01-13
1980-06-03
Scott, Samuel
Stoves and furnaces
Hot-air furnaces
Casings
126116B, 126110AA, 62262, F24H 300
Patent
active
042056535
ABSTRACT:
A downflow furnace assembly having a combustible floor base including a pair of parallel side rails, a pair of parallel, variable length cross rails, and integral spacing flanges, and a method of constructing the combustible floor base. The integral spacing flanges are for maintaining the lower plenum of the downflow furnace assembly at a preset distance from the edge of a combustible floor and are formed by die pressing the same metal sheets that are pressed to form the rails of the floor base. The variable length cross rails are each comprised of a pair of interfitted channel members that are in slidable communication with each other. By sliding the channel members with respect to each other, the lengths of the cross rails and the width of the base can be adjusted. The surface of each channel member defines a plurality of holes, and each cross rail can be adjusted to various preset lengths by aligning different holes. In a preferred embodiment, the cross rails include joiner members which allow the cross rails to be easily secured to the side rails at a plurality of positions so that the depth of the floor base can also be varied.
REFERENCES:
patent: 3094916 (1963-06-01), McGrath et al.
patent: 3283753 (1966-11-01), Bodett et al.
patent: 3614949 (1971-10-01), Goodgion
patent: 3871039 (1975-03-01), Garceau et al.
Carrier Corporation
Daley Donald F.
Ratliff, Jr. Wesley S.
Scott Samuel
Sensny John S.
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