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SYSTEM FOR AUTOMATING BLAST FURNACE SCALE CAR

  • US 3,559,820 A
  • Filed: 05/07/1969
  • Issued: 02/02/1971
  • Est. Priority Date: 05/07/1969
  • Status: Expired due to Term
First Claim
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1. In a system for controlling a scale car reciprocable along a track and adapted to receive materials from a storage bin positioned adjacent the track, transfer those materials to a discharge position along the track, and thereafter automatically discharge those materials at the discharge position, the combination of:

  • means for storing an electrical signal indicative of the position of said storage bin along said track to which the scale car is to travel;

    means for producing an electrical signal which varies as a function of the actual position of said scale car along the track;

    means for comparing said stored electrical signal indicative of the position of said bin with said electrical signal which varies as a function of the actual position of said scale car to derive an error signal;

    means responsive to said error signal for moving said scale car to said bin such that said error signal is zero when the scale car is adjacent the bin; and

    means responsive to a zero condition of said error signal for activating said bin to discharge at least a portion of its contents into the scale car.

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