Abstract: The invention concerns a gathering device (10) with a revolving body (14) for the formation of sheet stacks (34, 35) from individually delivered sheets (30, 31). Thanks to a device (23) for generating a holding force, preferably by electrostatic charging, which is arranged essentially outside the outer surface (16) of the revolving body (14), the sheets (30, 31) can be secured to the revolving body (14) without the revolving body (14) needing to have receiving positions dictated by mechanical means. Therefore, the receiving positions can be adapted as desired to the particular requirements.

Abstract: The invention concerns a gathering device (10) with a revolving body (14) for the formation of sheet stacks (34, 35) from individually delivered sheets (30, 31). Thanks to a device (23) for generating a holding force, preferably by electrostatic charging, which is arranged essentially outside the outer surface (16) of the revolving body (14), the sheets (30, 31) can be secured to the revolving body (14) without the revolving body (14) needing to have receiving positions dictated by mechanical means. Therefore, the receiving positions can be adapted as desired to the particular requirements.

Abstract: An apparatus for winding or unwinding material webs onto or from a winding core (3) has a bearing device (5) and a drive device (9) for driving the winding core (3) that is rotatably mounted in the bearing device (5). The drive device (9) comprises a drive (10) and a torque-transmitting device (11) from the drive (10) to the winding core (3). In order to achieve the smallest possible winding-core diameter and, nonetheless, to achieve an adequate winding or unwinding speed, the torque-transmitting device (11) comprises a toothed-belt reduction gear mechanism (12).