Forno-Convertisseur
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“Ponsard Furnace or Forno-Convertisseur. This apparatus is essentially a combination of the Pernot furnace with the Bessemer converter, consisting of a hearth movable about an obliquely vertical axis. Instead of rotating round and round on this axis, the hearth D only moves through half a revolution.” — The Encyclopedia Britannica, 1893
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Iron and Steel IndustrySource
The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)
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