US Patent 11589516 Agricultural baler with controlled wrapping material brake

A wrapping assembly includes: a material roll that holds a roll of wrapping material; a duckbill assembly including a duckbill carrying a duckbill roll that draws material from a roll of wrapping material held by the material roll, the duckbill being movable between a first position and a second position; a duckbill actuator coupled to the duckbill that moves the duckbill between the first position and the second position; a variable brake associated with the material roll that applies a variable braking force to the material roll; and a controller operatively coupled to the duckbill actuator and the brake. The controller determines that a load on the duckbill actuator exceeds a threshold value and outputs a brake reduction signal to the brake so the brake reduces applied braking force to the material roll when the load on the duckbill actuator exceeds the threshold value.