Title: Apparatus for producing suitcase frames

Abstract: In an apparatus comprising a non-circular rotary mandrel on which a strip of paper or a similar sheet material is wound to form a multilayer tubular article, the material entering the mandrel is subjected to pressure thereagainst by means of a roller unit including at least two pairs of rollers. Both pairs of rollers are independently and pivotably suspended in a common carrier so that all of the rollers may continuously and independently apply a surface pressure to the material being wound onto the mandrel.

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Inventors: Olsen, Harry Herbert (Korsor, DK)
Hjort, Mogens Ivan (Korsor, DK)

Application Number: 487685
Filing Date: 1974-07-11
Publication_date: 1976-03-09
Assignee: Danalet Kuffertfabrik A/S (DK)
Primary Class(es): 156/446 156/486
Other Classes:
US Patent Ref:

1278898	Sep, 1918	Fernald	156/446.
2218027	Oct, 1940	Hatch	156/193.
2388541	Nov, 1945	Henderson	156/189.
2495167	Jan, 1950	Horstman et al.	156/193.
3076493	Feb, 1963	Berg	156/446.
3190783	Jun, 1965	Tarnok	156/489.

Other Refs:
Primary Examiner: Drummond, Douglas J.
Assistant Examiner: Simmons, David A.
Attorney: Browne, Beveridge, DeGrandi & Kline