Weighing scales – Weigher responsive material control – Feed
Patent
1998-03-24
2000-05-09
Gibson, Randy W.
Weighing scales
Weigher responsive material control
Feed
177154, 222 77, G01G 1304, G01G 2302, G01G 1300
Patent
active
060606673
ABSTRACT:
A method and apparatus is disclosed for supplying a predefined quantity of bulk material to a packaging system. An amount of bulk material which closely approximates the desired package weight is discharged from a surge bin into a loss-in-weight feeder. Accurate single package weight loading of the loss-in-weight feeder yields a lower percentage of weight variance during feeder discharge than more heavily loaded feeders. In addition, the apparatus includes weight bearing springs mounted within the weighing mechanisms of the loss-in-weight feeder such that the weighing mechanisms are not damaged by overloading. The method of accurate filling of the loss-in-weight feeder prior to discharge and the spring protected loss-in-weight feeder cause package portions having optimal weight variance to be supplied for packaging.
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