Segmented core
AssigneeNCR Corporation
InventorJames B. Coffey
Life of this patent
Estimating the term…
Abstract
A segmented core includes a plurality of integral core segments defined by a respective separation slot in the outer surface thereof. A sheet is wound around the core in a plurality of layers and is slit at the slot to simultaneously wind respective sheet ribbons on the core segments to form individual rolls. The sheet slit is aligned with the core slot which allows the wound rolls to be broken apart at the slots.
Claims20
A method for making wound rolls comprising:
- producing a segmented core having a tubular wall including an inner surface defining a bore, and an outer surface interrupted axially by an annular slot extending radially inwardly to an integral web for defining a plurality of core segments;
- winding a sheet around said core in a plurality of layers;
- and
- slitting said sheet at said slot during said winding step to simultaneously wind respective sheet ribbons on said core segments to form said rolls.
An apparatus for making wound rolls comprising:
- means for producing a segmented core having a tubular wall including an inner surface defining a bore, and an outer surface interrupted axially by an annular slot extending radially inwardly to an integral web for defining a plurality of core segments;
- means for winding a sheet around said core in a plurality of layers;
- and
- means for slitting said sheet at said slot during winding to simultaneously wind respective sheet ribbons on said core segments to form said rolls.
A core for winding a slit sheet therearound comprising a solid tubular wall having an inner surface defining a bore, and an outer surface interrupted axially by a plurality of annular separation slots extending radially inwardly to an integral web for defining a plurality of equal-length core segments bounded by shorter scrap end segments breakable apart at said slots.
A core comprising:
- a tubular wall having an inner surface defining a bore, and an outer surface interrupted axially by an annular slot extending radially inwardly to an integral web for defining a plurality of core segments;
- and
- means for locally weakening said core web to define a break-apart plane between said core segments.
A core comprising:
- a tubular wall having an inner surface defining a bore, and an outer surface interrupted axially by an annular slot extending radially inwardly to an integral web for defining a plurality of core segments;
- and
- wherein said wall includes chamfers at said slot to crown said core segment for self-centering sheet ribbons wound therearound.
A core comprising:
- a tubular wall having an inner surface defining a bore, and an outer surface interrupted axially by an annular slot extending radially inwardly to an integral web for defining a plurality of core segments;
- and
- a slit sheet wound around said core segments in a plurality of corresponding sheet ribbons thereon defining a wound roll log.
Dependencies are inferred from the claim text.