Machine for folding sheets

Details Machine for folding sheets Machine for folding sheets

1978-12-26

1981-09-08

Burr, Edgar S.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

29116R, 291211, 29130, 493426, 493428, B65H 4518

Patent

active

042880670

ABSTRACT:
A machine for folding sheet material comprises a plurality of rollers opposedly arranged in pairs and engaged at the ends with a stationary frame and biased towards each other by pushers. Each roller has a surface provided with resilient lugs and intervening smooth surfaces. Owing to the resilient lugs the rollers are forced to move away from each other, as the sheets move past, only to a limited extent thereby accommodating any uneveness in the sheets.

REFERENCES:
patent: 1830439 (1931-11-01), Mogaard
patent: 1915128 (1933-06-01), Keltie
patent: 2514737 (1950-07-01), Anderson
patent: 2900185 (1959-08-01), Petre
patent: 3266414 (1966-08-01), Wahlstrom
patent: 3349462 (1967-10-01), Mott
patent: 3447600 (1969-06-01), Greene
patent: 3721188 (1973-03-01), Jacobsen
patent: 3748711 (1973-07-01), Smith
patent: 3796423 (1974-03-01), Shuster

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