Improvements to the subject of main patent No. 9100972 for device for securing banding on perforation and cutting cylinders for graphic arts machinery

摘要

They consist in connecting the pneumatic chambers 6 to conduits 102, 103, 104, 105 of a source for continuously supplying compressed air, which maintains the pressure in said chambers, and also in arranging elastic small blocks 107, which damp impacts and noise, under the screws 13 for regulating depth, and others 110 between the chambers 6 and the bodies of the screws 13 for braking any fortuitous unthreading of the screws.