Package Machinery Co. Inc.

Eagle Machinery Company

Oren G Mosher

Oren A Mosher

Ellwood S Douglas

Edward P Stone

A levelling apparatus for a combination weighing system comprises a first, rotating tine assembly supported adjacent to a vibrating feed chute to rake product, a second, stationary tine assembly supported adjacent to the first tine assembly so that as tines of the first tine assembly revolve about a tine assembly axis the tines of the first tine assembly interdigitate with tines of the second tine assembly to strip product from the first tine assembly and participate in the levelling process. The first tine assembly is pivotally supported to a guide means which leads from the chute to an accumulator bucket so that the first tine assembly does not interfere with vibrations of the feed chute and is pivotally moveable away from the chute to facilitate servicing of the chute.

Leveller for product feeder in weighing machine

A package fill height detector comprises a probe for abutting a batch of product in a package, means for inserting the probe into an opening in the top of the package so that the probe rests on the product, and a sensor for sensing the height of the probe when it rests on the product in the package to determine the fill height of the package. The means for inserting the probe into the package comprises an arm which supports the probe, a motor for rotating the arm and a cam for guiding the arm downwardly into the package until the probe rests on the product within the package and then upwardly out of the package. An associated weighing and packaging system includes a control coupled to the sensor for decreasing the delivered weight of subsequent batches of product when the fill height is below a target level and vice versa.

Fill height detector in weighing and packaging system

A combination weighing system searches a plurality of scales for a combination which provides a minimum total weight of product not less than a pre-established target weight. The search for the best combination is performed on the basis of an ordered search sequence of all combinations, and certain steps of the sequence and corresponding combinations are omitted from the sequence if they involve subcombinations previously searched and found to be at or above the target weight. The scales produce signals representative of the product weight, and the signals are calibrated and processed to eliminate measurement errors.

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Hayward, CA, United States of America

Oren G Mosher