Hyer Industries, Inc.

Paul M Kintner

Frank S Hyer

When a weigh feeding system which senses the rate of material feed by weighing the material and automatically controls the actual feed on the basis of a departure of the sensed rate of material feed from a desired rate, thereby to produce an error signal, is subjected to a major or sporadic disturbance such that the sensed rate departs from the desired feed rate by more than a predetermined amount, the system limits the feed rate used to produce the error signal to a synthetic amount no matter by how far the sensed feed rate departs from the desired rate, the values of said predetermined amount and said synthetic amount being selected in accordance with the nature of the system, the degree of accuracy desired, and the nature of the expected disturbances, thereby to improve the overall accuracy of the system when subjected to such disturbances.

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Pembroke, MA, United States of America

Paul M Kintner