Patent ID: 7644563

Claim:
A round baler comprising: a bale forming chamber; a duck bill assembly which comprises a pair of elongate plates that are biased towards one another to grip wrapping material therebetween and which is movable between an advanced position and a retracted position to introduce a free end of the wrapping material drawn from a supply roll into the bale forming chamber of the baler; and a cutting device located between the retracted position of the duck bill assembly and the bale forming position for severing a length of wrapping material wrapped around a bale in the bale forming chamber at the end of a bale wrapping cycle from the supply roll, wherein a clamping device is configured to apply an additional force to at least one plate of the duck bill assembly, while the duck bill assembly is in the retracted position, such that the additional force on the plate increases the grip on the wrapping material by the duck bill assembly between bale wrapping cycles.