Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1976-04-10
1979-10-30
Knowles, Allen N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209644, B07C 512
Patent
active
041725280
ABSTRACT:
A tablet selecting apparatus comprising a horizontally rotatable circular perforated plate having a multiplicity of perforations for passing reject tablets therethrough, a vibrator for giving vibrations to the perforated plate, a tablet feeding chute having a feeding outlet disposed above and opposed to the perforated plate at a position other than the center of the plate, an acceptable tablet blocking member provided adjacent the feeding outlet on one side thereof opposite to the direction of rotation of the perforated plate and spaced from the perforated plate by a clearance not permitting passage of the tablets therethrough, a compressed air injecting duct provided adjacent the blocking member on one side thereof opposite to the direction of rotation of the perforated plate and having an air outlet directed toward the outer periphery of the perforated plate, and a reject tablet receptacle disposed below the perforated plate. The tablets to be separated for selection are fed from the feeding outlet onto the perforated plate and make approximately one revolution with the rotation of the perforated plate. During the revolution, reject tablets having a smaller diameter than the perforations pass through the perforated plate into the tablet receptacle. The acceptable tablets impeded by the blocking member as retained on the plate are removed from the plate by the air forced out from the injecting duct.
REFERENCES:
patent: 1701641 (1929-02-01), Skriba
patent: 3942645 (1976-03-01), Aronson
patent: 3997058 (1976-12-01), Greer et al.
patent: 4024058 (1977-05-01), Derckx
Kyoda Takeshi
Morishita Kazuo
Fujisawa Pharmaceutical Co. Ltd.
Knowles Allen N.
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