Mechanism for feeding wrap material into a bale-forming chamber for enveloping a large round table

In a large round baler having a bale chamber for receiving crop products and including driven, chamber defining elements for rotating the crop products within the chamber for forming a bale, and a bale wrapping mechanism including a wrap material feeding mechanism for introducing wrap material into the chamber for engagement with the periphery of a bale rotating within the chamber, the improvement, comprising:

• said wrap material feeding mechanism including a pair of frictionally interengaged drive rolls adapted for having wrap material placed therebetween for being propelled toward the bale-forming chamber;
• drive means coupled to one of the pair of drive rolls for selectively driving the rolls when wrapping of a bale is desired;
• a wrap material support roll mounted adjacent the drive rolls at a location for having the wrap material drivingly engage a peripheral portion thereof before passing between the drive rolls whereby the support roll will rotate any time wrap material is advancing through the drive rolls;
• rotation sensing means operatively associated with the support roll and operable for monitoring the rotation of the support roll and generating first and second output signals respectively indicative of rotation and absence of rotation;
• at least one indicating circuit means coupled to the rotation sensing means and including signal means responsive to the first signal for notifying an operator when the support roll is rotating so as to indicate undesired dispensing of wrap material;
• and said one indicating circuit means including enabling means operatively associated with the drive means for enabling the rotation sensing means only when the drive means is not driving the drive rolls.