coving is the mouth of the chimney, as it may be termed, beinga rectangular opening, 9 inches wide and 6 inches high, above the level of thehobs of the grate, into which the smoke from the tire first enters as it rises, ina direction almost horizontal, and then changing its course, ascends… … The smoke ascending through the mouth and throat of the chimney, may becompared to water flowing through a strait, leading suddenly into a sort ofgulf or much larger channel; for in this tire-place, after raising the sides andback, within and behind the side covings and grate, a little higher than…
Civil engineering · Architecture
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