Patent ID: 6962559

Claim:
A roller arrangement for booklet makers, comprising at least a first and a second pair of rotatable driven rollers, between which booklets are intended to pass successively for folding, the said first pair of rollers comprising two rollers that are arranged such that they can move towards and away from each other and have a spring loading towards each other, and where the second pair of rollers comprises two rollers with a mutual separation that can be adjusted, and mechanical means arranged for, following the insertion of a booklet between the rollers of the first pair of rollers to automatically adjust the mutual separation of the rollers of the second pair of rollers in response to separation between the rollers of the first pair of rollers produced by insertion of the booklet therebetween, wherein said rollers are mounted in bearings such that they can rotate between two end pieces arranged at a distance from each other and said mechanical means comprises a wedge element arranged at each end piece, such that the wedge elements can move into the space between the rollers of the first pair of rollers when these are separated by a distance caused by insertion of the booklet therebetween whereupon the wedge elements adjust the distance between the rollers of the second pair of rollers depending on the said distance between the rollers of the first pair.