Method for removing a marginal zone external of an outline cut i

Details Method for removing a marginal zone external of an outline cut i Method for removing a marginal zone external of an outline cut i

1992-04-20

1994-05-24

Woodard, Joye L.

Glass manufacturing

Processes

Glass preform treating

65113, 225 2, 225 935, C03B 3302, C03B 3309

Patent

active

053145232

ABSTRACT:
An outline is cut in a glass sheet to form an inner zone and an outer marginal zone. The glass sheet is positioned on a support which supports the inner zone and marginal zone from below. A carrier is arranged such that suction pads thereof adhere to the inner zone, and such that a beveled bottom surface of a mechanical removing device carried by the carriage contacts an outer edge of the marginal zone. When the carriage is raised, the suction pads move up relative to the mechanical removing device. The inner zone is raised, but the outer edge of the marginal zone is restrained against upward movement by the mechanical removing device so that the marginal zone breaks along the outline.

REFERENCES:
patent: 3520457 (1970-07-01), Augustin
patent: 4033490 (1977-07-01), Ulivi
patent: 4371103 (1983-02-01), Siemens et al.
patent: 4698088 (1987-10-01), Bando

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