Round baler for forming bales of agricultural products

A round baler for forming roll bales of agricultural products comprising a housing;

• rotatable bale-forming rolls arranged in said housing and spaced from each other;
• a binding tape supply container mounted on said housing and accommodating a tape supply roll supplying the binding tape to be wrapped around the bale being formed by said rolls;
• cutoff blade means for cutting off tape portions of a predetermined length from the binding tape supplied from said roll, said cutoff means including a pivotable blade holder, a blade supported in said blade holder and a support shaft which supports said blade holder for a pivoting movement, said blade holder being pivotable between an operative position in which said blade cuts off a tape portion from the binding tape pulled from said supply roll and an inoperative position in which said blade is remote from the binding tape, a pair of tape advancing rollers receiving a starting end of the binding tape from the tape supply roll, at least one of said advancing rollers being rotated after a bale has been formed by said bale-forming rolls in said housing so as to advance said starting end into a gap between two neighboring bale-forming rolls, whereby the binding tape is taken along by said bale forming rolls and the formed bale and is completely wrapped around the formed bale;
• drive means for rotating said at least one advancing roller, said drive means including a drive wheel connected to said one advancing roller, a pivotable lever having two deflection rollers rotationally supported on said pivotable lever, a hydraulic piston-cylinder unit for pivoting said pivotable lever, and a drive chain running over said deflection rollers and said drive wheel to rotate the latter upon a pivoting motion of said pivotable lever;
• and means for returning said blade holder to said inoperative position after said blade has cut off a tape portion from the binding tape, said returning means including a returning lever connected to said support shaft, said pivotable lever having an abutment provided with an abutment roller, said abutment roller cooperating with said returning lever to return said blade holder to said inoperative position after a tape portion has been cut off from the binding tape.