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the requisite quantities of cinder and metal have been again charged, and the process is continued. From eight to ten charges are made before any refettling is required, and these heats are worked in a day of ten hours. See puddling-furnace. Mechanical Puddlers. Griffith1865 McCarty1852 Berard1867 Harrison1854 Bloomhall1872 Bennett1864 Heatley1873 Gove1858 Dormoy1869 Riley1873 Danes1873 Sellers1873 Wood1870 Heatley1869 Revolving Puddlers. BeadlestoneDec. 9, 1857 HeatonAug. 13, 1867 AllenApr. 14, 1868 YatesFeb. 23, 1869 DanksNov. 24, 1868 DanksOct. 20, 1869 YatesFeb. 23, 1869 See also patents to Boynton, Allen, Jenkins, Smith, 1871; Jackson, Goodrich, Richardson, et al., Davies, Post, 1872; Jones, Danks, 1873. Pud′dle-rolls. The first, or roughing, rolls of a rolling-mill. Invented by Henry Cort, England, and patented in 1783. The loop, or ball of puddled iron, after a preliminary forging, is drawn out by passing through the puddle-rolls,
hird engine built by Hancock seems to have been well constructed, and ran for hire in the neighborhood of London. It was called the Infant. In following the record chronologically, we find the names of Gough, Summers and Ogle, Boase and Rawe, Heaton, Napier, Palmer, Gibbs and Applegath, Church, Redmund, Squire and Macaroni, and Hills. This brings us down to 1833. Hills seems to have been the most successful of the whole series of inventors. He traversed many of the roads leading out of d is to incorporate with a peculiar iron carbonaceous matters, such as fat, resins, tar, etc. Mushet fuses malleable iron with carbonaceous matters in crucibles. Vickers combines iron scrap, ground charcoal, and black oxide of manganese. Heaton's process consists in the use of nitrate of soda, producing what he terms crude steel, which may be afterward converted into pure iron or steel. He uses a cylindrical convertor, in the bottom of which is placed a charge of Chili saltpeter (an im