Classifying – separating – and assorting solids – Adhesion – Coated surface or mass
Patent
1974-09-30
1976-01-20
Reeves, Robert B.
Classifying, separating, and assorting solids
Adhesion
Coated surface or mass
B07C 536
Patent
active
039332489
ABSTRACT:
An improved "bird-swing" detector which has a downstream rejection system. An optical type bird-swing detector inspects glass containers as they move therethrough on a conveyor. A container exhibiting a bird-swing defect causes generation of a rejection signal. An oscillator may be set at a frequency in synchronism with the travel of the containers. A wave-shaping circuit forms the output of the oscillator into square waves at the frequency of the oscillator. A flip-flop has one input connected to the rejection signal and another input terminal connected to the wave-shaping circuit. The flip-flop output is connected to a multi-stage shift register. The signal from the wave-shaping circuit clocks the shift register. The switching of the flip-flop is delayed to allow entry of any information therefrom into the shift register before the flip-flop is reset. A reject or defective container signal is clocked through the shift register in synchronism with the travel of a defective container on the conveyor. In a rejection zone, downstream of the detector, a rejection mechanism is activated by a one-shot to reject the container. The final stage output of the shift register is gated with the signal from the wave-shaping circuit to turn on the one-shot at the proper time for rejection of a defective container.
REFERENCES:
patent: 3565249 (1971-02-01), Codding
patent: 3662883 (1972-05-01), Sager
patent: 3669263 (1972-06-01), Babb
patent: 3802559 (1974-04-01), Luchetti
patent: 3820642 (1974-06-01), Levasseur
Damm David A.
Juvinall John W.
Scherf Gerald F.
Holler Edward J.
McLary Steve M.
Owens--Illinois, Inc.
Reeves Robert B.
Rolla Joseph J.
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