Patent ID: 7237372

Claim:
An introduction device for introducing a roll of wrapping material to a wrapping device comprising; a support for supporting a roll of wrapping material, the support being movable between a loading position and an operating position; an actuating device including a pressure arm mounted for pivoting about a bearing, a roller mounted onto the pressure arm, and a first actuator coupled to said pressure arm in a manner establishing an over center relationship relative to said bearing, whereby said first actuator acts to yieldably retain said arm either in a non-operating position holding said roller away from a region to be occupied by said roll of wrapping material when the support is in its loading position, or in an operating position wherein said roller contacts and exerts pressure onto the roll of wrapping material during the wrapping operation when the support is in said operating position; a device coupled between said support and said pressure arm for moving said pressure arm so as to cause said first actuator to move over center when said support is moved from said loading position to said operating position, and vice-versa and; a second actuator coupled to said support for selectively moving said support between said loading and operating positions.