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(11) | EP 0 834 461 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Automatic machine for folding long sheets, particularly technical drawings |
| (57) This automatic machine for the zig-zag folding of long sheets, particularly technical
drawings, creates alternate folds by the action of two oscillating creasing blades
prior to a short fold-completing compressing action determined by inserting a vertically
descending and alternately creased sheet, gripped and urged by two upper rollers,
between two opposing pairs of presser rollers rotatable with predetermined reciprocating
synchronous movement. |