Metal working – Method of mechanical manufacture – Roller making
Patent
1994-04-21
1995-11-28
Lavinder, Jack W.
Metal working
Method of mechanical manufacture
Roller making
2426091, 2426135, 492 47, 493308, B31D 500
Patent
active
054696194
ABSTRACT:
A tubular core assembly for winding or unwinding sheet material, such as newsprint or Rotogravure Print, wherein the opposed ends of an elongate cylindrical core are provided with inside diameter-reducing annular core insert members. The inside diameter-reducing annular core insert members are secured by a mechanical interlocking member to a central core body formed by multiple wraps of a paperboard material. The mechanical interlocking member includes at least one radially interlocking member secured to and extending member and the annular core insert member. Because of the mechanical interlocking relationship between the inside diameter-reducing annular core insert members and the central core body member, the inside diameter-reducing annular core insert members are secured to the central core body member in positive locking relationship.
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Lavinder Jack W.
Sonoco Products & Company
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