| 摘要 |
A compressed air-fed turning bar assembly for turning over printed webs of material includes a cross member, a bearing body displaceably disposed on the cross member, at least one turning bar secured to the bearing body and displaceable therewith on the cross member, the turning bar having a circumference formed with air-outlet openings, at least one actuating spindle mounted in the turning bar and having an air duct, and a piston displaceably mounted on the actuating spindle and having an outer cylindrical surface formed with air outlet openings disposed in rows of different length extending in axial direction of the piston.
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