Patent ID: 7678038

Claim:
A device for compressing a folded edge of a workpiece, the device comprising: a support surface for supporting the workpiece; a rotatable pressure application member spaced from the support surface by a fixed distance, wherein the rotatable pressure application member is rotatable about a first axis of rotation, and wherein the workpiece passes through a space defined by the fixed distance between the support surface and the rotatable pressure application member such that a folded edge defined by the workpiece is compressed by operation of the support surface and the rotatable pressure application member as the folded edge of the workpiece passes through the space defined between the support surface and the rotatable pressure application member; and an adjustment mechanism interconnected with the rotatable pressure application member, wherein the adjustment mechanism is configured to adjust the fixed distance defined between the support surface and the rotatable pressure application member, wherein the adjustment mechanism includes a rotatable support member to which the pressure application member is rotatably mounted, and an actuator interconnected with the rotatable support member for selectively imparting rotation to the rotatable support member, wherein the rotatable support member is rotatable about a second axis of rotation that is offset from and parallel to the first axis of rotation such that selective rotation of the rotatable support member caused by operation of the actuator is operable to adjust the fixed distance defined between the support surface and the rotatable pressure application member due to the offset between the first and second axes of rotation, and wherein the space defined by the fixed distance between the support surface and the rotatable pressure application member remains constant other than during operation of the actuator to impart rotation to the rotatable support member.