SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Carbon arc welding. Historical artwork of a worker using a coloured piece of glass to shield his eyes from a 19th-century welding device. This artwork illustrates the carbon arc welding method developed by Bernados and others at the Cabot Laboratory (Cabat) in France. The technique was patented in the UK in 1885. It used a high electrical voltage between two electrodes, one being the metal object to be welded (in clamp) and the other a carbonised tip held in the hand and brought close to the other electrode. The wires seen here supply the electricity, which was generated by a steam engine. Artwork from A Travers l'Electricite (G. Dary, Paris, 1900).
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