. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. JS46.] THE CIVIL ENGINEER AND ARCHITECT'S The annexed figure shows a vertical section of a stove, a is the fire-cham- ber, of fire-briclis, about two inches thick, of a cylindrical shape (or eitlier conical, square, or polygonal, if prefer- red), and the lop is perforated with nu- merous holes, from ith to ith of an inch in diameter, on the side, as shown at y, for the escape of the gases from the lire; at the bottom is an iron grating b, and beneath it an ash-pit o
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. JS46.] THE CIVIL ENGINEER AND ARCHITECT'S The annexed figure shows a vertical section of a stove, a is the fire-cham- ber, of fire-briclis, about two inches thick, of a cylindrical shape (or eitlier conical, square, or polygonal, if prefer- red), and the lop is perforated with nu- merous holes, from ith to ith of an inch in diameter, on the side, as shown at y, for the escape of the gases from the lire; at the bottom is an iron grating b, and beneath it an ash-pit or chamber <?. rf is a packing of sand or ciay, between the fire-chamber and the outer cylindrical case of iron e, to pre- vent the radiation of heat at that part; and/is a door-way or opening for the introduction of fuel. The smoke and gases, in their escape from the lire- chamber, having to pass through the apertures in the top or side (which in time becomes red-hot), are consumed or intensely heated. The combustion is earned on in the lower part of the chamber;'the upper part serving as a magazine or store of fuel. Besides these methods of constructing fire-chambers, they may be com- posed of two vessels of a cylindrical or other shape, one within the other â the gases from the fire being allowed to escape between the two bv openings' in the side of the inner one, which contains the fuel, and is closed at the top; or the current of gases may be made to descend through the body of the Ignited fuel and grate, and then pass up between the two vessels, by admitting air above the fuel, instead of from below. The heat retainer of ihe stove, through which the gases have to pass in their course to the flue i is made of slabs or discs of burnt clay or brick, fitting closely within the casing or body of the stove ; or the retaining mass may be composed of any number of smaller parts, with intervening spaces tor the passage of the gases, instead of the perforations above-mentioned U
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