Title: System for package weight control

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Abstract: A system for package weight control. The system includes a digital for receiving material sufficient in volume to at least equal a desired net weight of product. At least one conveyor is mounted for conveying the material from a like number of feeders disposed at one end of the conveyor to the hopper disposed at the other end of the conveyor. Each feeder may dispense substantially similar volumes of material at spaced locations on each conveyor as the conveyors are advanced through predetermined incremental distances. The accumulated weight of the material on each conveyor belt is measured and a first digital signal representing the accumulated weight is generated and stored by a control. Each new accumulation on each belt likewise is measured and a second ditigal signal and so on representative of the accumulation is generated and stored. The weight of the quantity of material of the new accumulation is determined by subtracting the summation of digital signals from that digital signal representing the last summation. A digital signal representing the desired net weight of product to be received by the hopper is generated and stored. The control compares the latter signal with the signal representing accumulations as the accumulations are summed and advances the conveyor belt a sufficient distance so that a desired net weight of product is received by the hopper. One of the conveyors of multiple conveyors may convey a bulk volume of material to the hopper.


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