al Fig. 1 is a longitudinal and Fig. 2 a transverse section. A The furnace, it is claimed, is well adapted to the heating of exchange. The edifice is to be of brick and stone, nine sto- is the fire pot, the heated air and gases from which pass up extension rooms; and by a nearly horizontal pipe,fif… … stone, resting on a layer of con- this chamber may also be di- FURNACE FOR HEATING BUILDINGS. crete eleven feet square. The vided by a longitudinal parti- cost of the concrete, as compared with masonry, is estimated and ten inches in diameter, with only ten inches rise, an ade- tion, represented in…
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