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PRODUCT WEIGHING SYSTEM

  • US 3,705,636 A
  • Filed: 12/28/1970
  • Issued: 12/12/1972
  • Est. Priority Date: 12/28/1970
  • Status: Expired due to Term
First Claim
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1. In a product weighing system:

  • a. a single product delivering conveyor and beam balance means including a beam having a product receiving station adapted to receive product from said conveyor, and pivot means forming a support fulcrum for said beam;

    b. position responsive means coupled to said beam and adapted to deliver a signal representing the immediate disposition thereof, said position responsive means including a transformer having a primary winding, a secondary winding, and movable core means inductively coupling said windings, one to another, said core means being operatively coupled to said beam with the movement of said beam being adapted to vary the inductive coupling between said primary and secondary windings;

    c. power supply means coupled to said primary winding and adapted to deliver electrical power to said primary winding at a substantially constant potential;

    d. said product receiving station being a weigh container disposed along said product delivering conveyor, said container having side walls, an open top and a bottom closure wall adapted to intermittently open in response to a signal from said transformer indicating said beam balance means having reached a certain limited predetermined position indicating a fill of product having been received;

    1 e. said conveyor means having first and second delivery channels with Said first delivery channel receiving product at a substantially greater rate from said conveyor than said second delivery channel, each delivery channel being disposed immediately adjacent said weigh container and being arranged to deposit product into said weigh container with each delivery channel having reciprocatorily movable gate means for controllably interrupting flow of product into said weigh container, the gate means for said first delivery channel being closed in response to a first signal generated by said transformer indicating said beam balance means having reached a certain first predetermined position which is prior to reaching said limited predetermined position, the gate means for said second delivery channel remaining open and continuing to deliver product to said weigh container until being closed in response to a second signal generated by said transformer indicating said beam balance means having reached said limited predetermined position; and

    f. means interrupting said product delivering conveyor in response to said second signal.

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