Patent ID: 6272816
Filing Date: 2001-08-14
Classification: A01F

Abstract:
In a wrapping mechanism for feeding a web of wrapping material into a baling chamber of a large round baler for wrapping a bale located in the chamber, the mechanism including upper and lower wrap material feed rolls having their surfaces frictionally engaged with each other and adapted for being counter-rotated, a wrapping material active supply roll located in direct contact with said upper feed roll so as to be rotated in response to rotation of said upper feed roll, with the supply roll having opposite first and second peripheral locations respectively adjacent and remote from said baling chamber, a roll pressure applying arm assembly including a transverse pressure roller engaged with a peripheral segment of said supply roll extending between said second peripheral location and a top of said supply roll, the arm assembly further including an energy source for urging the roller against said supply roll thereby urging the latter against a desired peripheral zone of said upper feed roll, and a length of wrap material extending from said supply roll through a nip defined by said upper and lower feed rolls, the improvement comprising: said arm assembly including separate upper and lower arm sections; said upper arm section including a pair of transversely spaced upper arm portions being pivotally mounted at first ends for movement about a first transverse axis, located above said supply roll and adjacent said baling chamber, between a raised loading position and a lowered working position; said lower arm section including a pair of transversely spaced lower arm portions pivotally mounted at first ends for movement about a second transverse axis, located on an opposite side of said supply roll from said baling chamber, between a raised working position and a lowered loading position; said pressure roller extending between and being mounted to said pair of lower arm portions; and said upper and lower arm sections overlapping each other at a location adjacent said peripheral portion of said supply roll when said upper and lower arm sections are in their respective working positions; and said upper arm section being in engagement with said lower arm section for imparting the force urging said pressure roller against said active supply roll.