| 摘要 |
A table with a flat bed of substantial length, for example, 50 feet, has a shear blade fixedly mounted along each edge thereof, the cutting edges of the shear blades being parallel and spaced apart by a distance equal to the desired trimmed width of a worksheet to be trimmed thereon. Centering means centers a worksheet placed on the bed, and vacuum chucking means anchors such worksheet to the bed with marginal portions of the sheet overlying the shear blades. Compressed air may be introduced into the vacuum chucking means when centering a worksheet or moving such sheet along the bed to provide air bearing support for such sheet. The carriage drive means also may be used to draw a worksheet onto, and remove it from the bed.
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