Boots – shoes – and leggings
Patent
1979-11-01
1981-09-22
Wise, Edward J.
Boots, shoes, and leggings
364472, G06F 1546
Patent
active
042913799
ABSTRACT:
The method for automatically regenerating molding sands consists in mixing the spent sand and in intermittently withdrawing a cylindrical test sample of sand. The compactibility of the test sample is measured intermittently by determining the reduction in height of the sample under the action of a predetermined force. The quantity of water to be added to the sand is determined by means of a microprocessor from the result of the measurement and from the temperature of the sample. The results of measurements of compactibility and compressive strength of the test sample are transmitted to the microprocessor which determines the quantity of bentonite, of foundry black and the like to be added to the spent sand.
REFERENCES:
patent: 3168926 (1965-02-01), Dietert
patent: 3373977 (1968-03-01), Dietert
patent: 3561743 (1971-02-01), Schroeder et al.
patent: 3627021 (1971-12-01), Schultz et al.
patent: 4149581 (1979-04-01), Adkison et al.
Automatic Sand Testing and Bond Additions to System Sand; Dietert, Modern Castings, vol. 52, No. 6, Dec. 1967, pp. 61-67.
Computerized Sandology for Instant Sand Control; Schaum; Modern Castings, vol. 57, No. 3, Mar. 1970, pp. 131-133.
Improve Your Core Mixtures with a Computer; Smith, et al., Modern Castings, vol. No. 1, Jan. 1967, pp. 59-63.
Cappelletto Renzo
Willame Jean
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