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bell and hopper

A machine for charging a shaft furnace, consisting of an iron hopper with a large central opening, which is closed by a cone or bell pulled up into it from below. In the annular space around this cone, the ore, fuel, etc., are placed, then the cone is lowered to drop the materials into the furnace, after which it is again raised to close the hole.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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