Classifying – separating – and assorting solids – Adhesion – Coated surface or mass
Patent
1976-07-22
1978-03-28
Knowles, Allen N.
Classifying, separating, and assorting solids
Adhesion
Coated surface or mass
B65G 4734
Patent
active
040813622
ABSTRACT:
A paddle mounted on a fruit sorter at the end of a fruit conveyor is connected to the plunger of a solenoid which normally is actuated to bias the paddle into the path of fruit being discharged from the conveyor toward a good-fruit discharge conveyor. A color sorter is positioned to scan the fruit leaving the conveyor, and means are provided to de-energize the solenoid upon the detection of a good fruit to allow the paddle to be moved from the path of the fruit so that the fruit will fall onto the discharge conveyor. Power to operate the solenoid is provided by a circuit which develops a relatively large value of current upon initial energization of the solenoid. This large current acts to quickly move the paddle into the path of any cull fruit or non-fruit leaving the conveyor to deflect such items from the discharge conveyor. The sorter circuitry provides a much smaller amount of current after the initial surge to retain the paddle in its deflecting mode until a good fruit is again scanned. When the solenoid is de-energized its travel is limited by a soft spring so that its return to the deflecting position will be rapid, said spring being readily yieldable if the paddle is hit by a good fruit moving toward the discharge conveyor.
REFERENCES:
patent: 2933185 (1960-04-01), Coleman et al.
patent: 3278021 (1966-10-01), Schultze
patent: 3381819 (1968-05-01), Crawford
patent: 3460673 (1969-08-01), Sanner
Chamberlin Donald W.
Irving Donald W.
FMC Corporation
Guernsey L. B.
Kelly R. S.
Knowles Allen N.
Tripp C. E.
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