Abstract: A double drum winder machine for web-formed material, especially paper webs, including a support. The machine further includes two winder drums which are disposed on the support and form therebetween a drum bed. A wound roll is operatively supported in the drum bed. One of the winder drums receives the web-formed material and directs the material towards the wound roll so that the material is wound onto the wound roll. A load drum is disposed on the support and rides on the wound roll. A relief drum is in cooperation with and is disposed on the same side of the wound roll as the one winder drum. The relief drum is operatively installed on rocking levers which are pivotally connected to the support. A drive mechanism operatively engages the rocking levers to pivot the levers toward and away from the wound roll so as to selectively and responsively press the relief drum against the wound roll whereby the weight of the wound roll against the one winder drum is adjustable during the winding operation.

Abstract: A heatable roll has a plurality of annular, preferably electrical, heating elements (13) distributed internally along the length of the roll body (10,11). A slip-ring arrangement (22) rotating with the roll connects the heating elements with a heating current source (20) located outside the roll. A heating output setting device (9) arranged inside the roll is provided for each heating element and is connected to a signal transmitting arrangement (31 to 34). A control signal is formed for each heating element in a control center (21) located outside the roll, and is supplied to a parallel-serial converter (31). This converter forms one serial signal sequence from the plurality of parallel control signals, and this sequence is supplied, for example by means of slip-rings (22a), to a serial-parallel converter (34) located in the roll. This converter converts the serial signal sequence back again into parallel control signals which are supplied to the individual heating output setting devices.