Weighing scales – Weigher responsive material control – Correlated feed and discharge
Patent
1981-05-28
1983-08-30
Hartary, Joseph W.
Weighing scales
Weigher responsive material control
Correlated feed and discharge
177122, G01G 1324
Patent
active
044011741
ABSTRACT:
A weigh scale machine for automatically filling bags/containers including an infeed chute, a weigh bucket, a scale mechanism, and a discharge hopper. Initially, the flow gate located between the infeed chute and the weigh bucket is open and product is permitted to flow through the infeed chute into the weigh bucket. When the prescribed weight is attained, as determined by the setting of the scale mechanism, a weigh complete sensor is triggered and the flow gate is closed. The dump doors located at the bottom of the weigh bucket are then opened and the product is discharged through the hopper into the bag/container. Operation of the machine is controlled by a solid-state controller which includes a plurality of sensors for monitoring the actual positions of the flow gate, scale beam, and dump doors. The controller is adapted to sequence the machine through the various functions in the weighing and filling cycle in response to feedback signals received from the sensors indicating that commanded functions have in fact been performed.
REFERENCES:
patent: 2022659 (1935-12-01), Fisher
patent: 2954202 (1960-09-01), Bale
patent: 3124206 (1964-03-01), Burke
patent: 3133607 (1964-05-01), Gardner
patent: 3959636 (1976-05-01), Johnson
Douglas & Lomason Company
Hartary Joseph W.
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