| 摘要 |
Gripper movement changeover device on a sheet-turning drum for perfector printing machines having drive members for the gripper movement pivotable about pivot pins, each of the drive members carrying a roller selectively engageable with coaxially disposed control cams for following the same, includes a bridge disposed in a cavity formed in the sheet-turning drum, the bridge extending over the length of the sheet-turning drum, the drive members being mounted in the bridge, the bridge being longitudinally displaceable a distance corresponding to the mutual spacing of the control cams of the respective drive members. |
