Patent ID: 7918069

Claim:
In combination with a large round baler including a baling chamber for forming large round bales and for bringing a bale being formed into rotation at a first circumferential velocity, a wrapping arrangement for enveloping a bale formed in said chamber with an enveloping material, a supply of enveloping material, a driven, cylindrical propulsion element for withdrawing enveloping material from said supply, a drive arrangement being coupled to said propulsion device and including a clutch arrangement effectively connected with said propulsion element for causing said propulsion element to have a circumferential velocity which is less than said first circumferential velocity, the improvement comprising: said clutch arrangement including clutching components being arranged in such a way that a predetermined tensioning force acting upon the enveloping material, when grasped by the rotating bale, remains at least generally constant at a value less than that which would cause an excessive stretching of the enveloping material regardless of a change in a difference between said first circumferential velocity of said bale and said circumferential velocity of said propulsion element.