A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . can do nothing towards supplying the deficiency of carbon in the metal reduced in the cen-tral part. From these considerations, it became evident that no system of drawing off thegases aroimd the sides, whether by the insertion of an iron tube into the throat, or by lat- 345. era! openings through the walls into a chamber surrounding the top of the furnace, can beadopted without more or less injury to its action ; and that the only unobjectionable modeVol. III.—
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . can do nothing towards supplying the deficiency of carbon in the metal reduced in the cen-tral part. From these considerations, it became evident that no system of drawing off thegases aroimd the sides, whether by the insertion of an iron tube into the throat, or by lat- 345. era! openings through the walls into a chamber surrounding the top of the furnace, can beadopted without more or less injury to its action ; and that the only unobjectionable modeVol. III.—11 642 IRON. would be to take the gases from a chamber above the surface of the minerals, thus equaliz-ing the pressure on the whole sectional area of the mouth, and thereby allowing an equallyfree flow for the ascending current up the middle, as well as up the sides of the this method the whole of the waste gases would become utilized, instead of a portion onlyand the fiuii^ee would be restored to its original state, inasmuch as the direction of the flowof heated gases would not be interfered with by unequal resistance. To form this cham-ber, the furnace must be covered in, and fed through a hopper, a plan long adopted at theCodner Park Iron Works, with the supposed advantage of scattering the minerals aroundthe sides of the furnace, and preventing their accunmlating in the centre ; a
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
