Stoves and furnaces – Fireplaces or accessories
Patent
1988-04-22
1989-02-21
Scott, Samuel
Stoves and furnaces
Fireplaces or accessories
52218, 52219, 110336, F24B 700
Patent
active
048055913
ABSTRACT:
Fifteen prefabricated refractory concrete blocks, consisting of ten different sizes and/or shapes assemble to provide a replacement firebox of U-shape with facing side walls joined by a rear wall. In one embodiment a metal lintel is disposed at the front upper boundary of the structure produced from the fifteen blocks, the lintel resting on the side walls bridging the opening therebetween and defining the upper boundary of the hearth opening. A masonry transition cone is erected atop the side walls and lintel. In a second embodiment, trapezoidal sheet metal panels are assembled to form a transition cone above the U-shape structure. The bottom courses are produced from blocks that are in the form of oblique rectangular parallelepipeds. These are arranged so that the joints are staggered vertically. The upper portion of the rear wall below the transition cone is formed from oblique trapezoidal prismatic blocks. Certain of the blocks in addition are truncated.
REFERENCES:
patent: 3460525 (1969-08-01), Bryant
patent: 3721225 (1973-03-01), Tidwell
patent: 3908630 (1975-09-01), Burcham
patent: 4248206 (1981-02-01), Orthey, Jr.
patent: 4305374 (1981-12-01), Taylor
patent: 4478208 (1984-10-01), Pitha
Kamen Noah
Scott Samuel
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