[0031]
In Figure 4 and Figure 5 shows a variant of the invention that uses the movement for media rolls of carpet two carousels 1 and 2, respectively 26 and 27. Each of these has two carousels cheeks between which are fixed rollers that support will come in turn 1 and 2 carpets. Each of the cheeks of the carousels comprises three radial arms located at 120 ° from each other. The ends of these arms are fixed levers which in turn carry at their ends rollers which support the belt 1 and 2. Levers deviate more or less from the axis of the carousel by means of jacks. On three rolls each carousel door that only one is active at a given time. On this figure are the rollers 28 and 29. They are respectively supported by the levers 30 and 31, actuated by the cylinders 32 and 33, and themselves supported by the radial arms 34 and 3