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Sheet separating apparatus

  • US 4,618,085 A
  • Filed: 06/29/1984
  • Issued: 10/21/1986
  • Est. Priority Date: 06/30/1983
  • Status: Expired due to Fees
First Claim
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1. A sheet separating apparatus for separating a sheet, which is elongated in a longitudinal direction and includes a plurality of weakened lines each crossing the longitudinal direction of said sheet, into a plurality of relatively small pieces along said weakened lines, said apparatus comprising:

  • first tensioning means for applying tension to said sheet in said longitudinal direction thereof; and

    second tensioning means for applying additional tension in said longitudinal direction which additional tension is non-uniform along successive weakened lines and which additional tension is applied while said sheet is being tensioned by said first tensioning means;

    wherein said second tensioning means includes a roller located in a fixed position and having an axis extending across the width of said sheet, said roller including a plurality of disks space apart along said axis, said disks gradually decreasing in diameter from a central portion of said roller toward each end of said roller, the outer peripheries of said disks abutting against said sheet to apply non-uniform tension along the width of said sheet.

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