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US 4,596,541 AGranted
Slit-score method and apparatus
AssigneeThe Ward Machinery Company
InventorsWilliam F. Ward, Sr., Raymond S. Watson
Life of this patent
Estimating the term…
Abstract
A method of slitting selected plies of multiply paperboard blanks by compressing narrow portions against an anvil surface (preferably soft) and cutting one or more plies along the compressed portions. The apparatus includes a cutting rule (straight or annular) with compression rules on each side to compress the blanks simultaneously with the cutting. The method and apparatus may be used in conjunction with conventional flat-bed or rotary diecutting.
Claims10
Slit-scoring apparatus for cutting selected plies of resilient multiply paperboard blanks comprising in combination:
- support means for supporting said blanks during cutting thereof;
- a die holder means positioned adjacent to and spaced from said support means such that said blanks are directed between said die holder means and said support means during cutting of said blanks;
- compression means including a pair of rigid compression rules having a space therebetween mounted on said die holder means for compressing narrow portions of said blanks against said support means during cutting of said blanks;
- and
- cutting means including a cutting rule mounted in said space between said compression rules for cutting one or more plies of said blanks along said narrow portions during compression thereof while leaving other plies of said compressed portions uncut,
- said cutting rule having a cutting edge extending beyond the compression edges of said compression rules a fixed distance substantially equal to the thickness of said selected plies to be cut for controlling the depth of cut in said blanks independent of the space between said support means for said blanks and said die holder means.
3 more elements
Dependencies are inferred from the claim text.