Method and apparatus for inspecting glass containers

Details Method and apparatus for inspecting glass containers Method and apparatus for inspecting glass containers

1981-05-22

1983-08-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

209526, 356240, B67C 114, B07C 500

Patent

active

043993575

ABSTRACT:
This invention relates to inspecting glass containers and other types of containers for defects, such as horizontal checks, in the sidewall thereof. The invention involves both method and apparatus for inspecting for such defects, whereby radiant energy is directed from above to be transmitted through the sidewall as a vertical band or column while the container is rotated. A light-sensitive detector observes the sidewall for reflected light produced by the defect, energizing of the detector creating a reject signal for rejection of flawed containers.

REFERENCES:
patent: 3328000 (1967-06-01), Rottmann
patent: 3394263 (1968-07-01), Baker
patent: 3894806 (1975-07-01), Remy et al.
patent: 4063823 (1977-12-01), Grat
patent: 4066363 (1978-01-01), Juvinall
patent: 4209802 (1980-06-01), Fogg et al.

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