A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . The charcoal fnery is also worked by the use of the gases to a much greater extentthan is generally known. The workman sends his blast directly into the mass of iron, andthe charcoal seems to be simply the means by which he is better enabled to manipulatethe iron in the finery, and keep it covered, so as to revive the oxidized metal, and thusprevent waste. A few hours spent with any intelligent workman at the side of his charcoalfinery would show the wasteful an
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . The charcoal fnery is also worked by the use of the gases to a much greater extentthan is generally known. The workman sends his blast directly into the mass of iron, andthe charcoal seems to be simply the means by which he is better enabled to manipulatethe iron in the finery, and keep it covered, so as to revive the oxidized metal, and thusprevent waste. A few hours spent with any intelligent workman at the side of his charcoalfinery would show the wasteful and expensive character of the so-called 7icw schemes for con- TIN PLATES. 1055 662. verting cast into wrought iron by theuse of air alone. The hite belief inthese schemes, by men of high reputeand practical knowledge in the trade, isa direct proof of the deficiency inknowledge of esact science, as at pres-ent applied to the nianuf\xcture of iron. The pile was now placed in the hol-low fire, and brought to a soft weldingor washing heat—again hammered outto slabs, 6 inches wide and threequarters inch thick ; these were re-heated, cut up, and afterward passedthrough rolls, reducing them to bars6 inches by half inch. These wereknown in the trade as hollow fireiron or tin bars. The result ofMr. Watkin Georges improvementswas to reduce the cost and double theproduction with the same outlay inmachinery. All the tin plates madeat this time had the great defect of arougii and smooth side. In the year1820, Mr. Win. Daniell (a gentlemansiill living, and for whose inventionthe trade is and will be under greatobligation) found a mode to remedythis defect. Himself a maker of tin
Size: 1436px × 1741px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
