Patent ID: 7878118

Claim:
A circumferential register adjustment device for a plate cylinder of a rotary press comprising: a motor for providing rotational motion; a worm shaft mechanically interconnected with said motor, said worm shaft exhibiting linear translation from the rotational motion of said motor; a bearing connected between said worm shaft and a drive gear of said plate cylinder such that said bearing transfers linear, but not rotational, translation to the drive gear due to movement of the worm shaft; a position emitter rigidly connected to said worm shaft; and a linear transducer for detecting the linear translation of said position emitter wherein said linear translation of said drive gear results in rotation of said drive gear and this rotation of said drive gear will be translated into a corresponding rotation of said plate cylinder so as to adjust said circumferential register of said plate cylinder; and wherein said linear translation of said worm shaft is directly measured and the linear translation of said worm shaft is used to determine the amount of rotation of said plate cylinder that was made to adjust said circumferential register.