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US 4,221,150 AGranted
Glass scribing apparatus
AssigneeOptical Coating Laboratory, Inc.
InventorsNils H. Bergfelt, H. William Bruce, Heinz J. Roeser
Life of this patent
Estimating the term…
Abstract
Apparatus for scribing a planar work piece includes a vacuum chuck table and a scribe bridge assembly moveable along shaft tracks straddling the table surface. The bridge assembly supports first and second sets of scribe devices which can be alternately rotated into engagement with a work piece as the bridge assembly moves along the tracks. The assembly is driven at both ends by chain drives by synchronized movement.
Claims10
Apparatus for scribing a planar work piece such as glass plate comprising
- a frame,
- chuck means mounted on said frame for receiving a work piece,
- track means,
- a bridge assembly mounted on said track means and moveable thereon, said bridge assembly including a shaft member positioned above said chuck means and moveably mounted in said bridge assembly, scribing means including a first set of scribing devices mounted on one side of said shaft member and a second set of scribing devices mounted on an opposite side of said shaft member whereby said scribing means can be rotated into engagement with a work piece by movement of said shaft member, and means for moving said shaft member in a first direction for rotating said first set of scribing devices into engagement with a work piece and moving said shaft member in a second direction for rotating said second set of scribing means into engagement with a work piece, and
- drive means for driving bridge assembly on said track means.
2 more elements
Dependencies are inferred from the claim text.