Method and apparatus for inspecting the bottoms of hollow glass

Details Method and apparatus for inspecting the bottoms of hollow glass Method and apparatus for inspecting the bottoms of hollow glass

1975-08-07

1977-05-24

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Containers or enclosures

2091117T, 250223B, 250341, G01N 2132

Patent

active

040252027

ABSTRACT:
Apparatus and method for inspecting the inside bottom surface of glassware for tramp glass by irradiating said surface with light having an angle of incidence of approximately 15 degrees and sensing any light transmitted through said surface as an indication of the presence of tramp glass.

REFERENCES:
patent: 2798605 (1957-07-01), Richards
patent: 3356853 (1967-12-01), Rottmann
patent: 3411005 (1968-11-01), Taylor
patent: 3684385 (1972-08-01), Einfalt et al.
patent: 3735144 (1973-05-01), Babunovic et al.
patent: 3770355 (1973-11-01), Anthon
patent: 3887285 (1975-06-01), Fry et al.
patent: 3894806 (1975-07-01), Remy et al.

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