Weighing scales – Processes
Patent
1978-01-23
1979-08-14
Miller, Jr., George H.
Weighing scales
Processes
177 50, G01G 1952
Patent
active
041642600
ABSTRACT:
A method and apparatus are provided for controlling the minimum and average weights of a product prior to packaging so as to assure that no charges are below a given minimum weight and to assure that the average weight of the charges is maintained at a predetermined level over the entire operating period of the machine producing the charges. After weighing, any charges under the minimum weight are brought up to weight by adding product. The deviation of the final weight of the charges from the average is then determined and an indication provided of the amount and direction of each deviation. All of these indications of the deviation from the average are summed to produce a running tally representative of the total net deviation from the average. The production of charges is correctively controlled when the summation exceeds a preselected level in either direction. An alarm may be energized and the system shut down when a further higher level is exceeded.
REFERENCES:
patent: 3108647 (1963-10-01), Harmon et al.
patent: 3476198 (1969-11-01), Francis
patent: 3643752 (1972-02-01), Blodgett
patent: 3805903 (1974-04-01), Muskat et al.
patent: 3974888 (1976-08-01), Murakami et al.
Miller Jr. George H.
Mira-Pak Inc.
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