. The book of the garden. Gardening. " Fig. 172 is a section, supposing the front wall of the furnace to be removed ; Fig. 172. z X. rra, wall of common bricks, 9 inches thick, which encloses the furnace on its four sides; b b a wall 9 inches thick, formed of Welsh fire-lumps, that enclose the fire- chamber on three sides. From the face and ends of this wall fire-bricks project, to support the coiled pipe a, placed in the flue. The intention of this wall is to pre- vent the too rapid abstraction, by the coil, of the heat from the fire, which comes in contact with it at the opening in fron
. The book of the garden. Gardening. " Fig. 172 is a section, supposing the front wall of the furnace to be removed ; Fig. 172. z X. rra, wall of common bricks, 9 inches thick, which encloses the furnace on its four sides; b b a wall 9 inches thick, formed of Welsh fire-lumps, that enclose the fire- chamber on three sides. From the face and ends of this wall fire-bricks project, to support the coiled pipe a, placed in the flue. The intention of this wall is to pre- vent the too rapid abstraction, by the coil, of the heat from the fire, which comes in contact with it at the opening in front only, where the hot gases turn into the back and side flues in which three-fourths of the furnace or boiler coil is placed. The roof of the furnace is formed of Welsh lumps, in which is an opening m fitted with a movable cover, for supply- ing the furnace with fuel, (coke or an- thracite coal being preferred.) The ash- pit o is enclosed with a door n, in which there is a register; k is a double fire-door to an opening in the wall, for clearing the fire-place and furnace bars from dust and scoria. This has a dead plate, to separate the ash-pit from the heating flues; x, heating-pipe, rising from the boiler coil which passes round the internal wall in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McIntosh, Charles, 1794-1864. Edinburgh and London, W. Blackwood
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
