Thomas, David, 1794-1882

David Thomas was born on November 3, 1794, at Tyllwyd, Glamorganshire, Wales. He began working at the Neath Abbey iron works in 1812 and in 1817 was made general superintendent of the Yniscedwyn Iron Works, which was acquired by George Crane in 1820. The two men conducted extensive experiments to use the local anthracite coal to smelt iron, but without success. In 1836 they learned of the hot-blast invented by James B. Neilson in Scotland. Crane received a British patent for hot-blast smelting with anthracite on September 28, 1836, and a successful furnace was blown in at Yniscedwyn in February 1837.

In May 1837 the American engineer, Solomon White Roberts, visited the works as the agent for the Lehigh Coal & Navigation Company and the Philadelphia & Reading Railroad Company. Josiah White, Erskine Hazard, and others associated with the LC&N resolved to adopt the process in America, and Hazard went to Wales in 1838 and induced Thomas to emigrate. The Lehigh Crane Iron Company was incorporated in Pennsylvania on January 10, 1839. Thomas ordered most of the machinery for the new works in Britain before embarking for America in May 1839. The Crane Iron Works at Catasauqua, Pa., began production on July 4, 1840.

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