Device for supplying a machine working on a web of material in stopped position, more particularly but not exclusively applicable to supplying a flat cutting press

Device for supplying a machine working on a web of material in stopped position particularly for a flat cutting press, the web being continuously supplied upstream of the machine, passing between a pair of intake and counterpart rollers, of horizontal and transverse axes, tangential to each other, driven in rotation at a constant peripheral speed, comprising:

• in the vicinity of the intake roller and downstream thereof, in the direction of advance of the web, an oscillating roller mounted to rotate on a support, which is pivotally mounted about the axis of the intake roller for oscillation said intake roller, said oscillating roller being driven in rotation on itself from the intake roller, via a transmission mechanism, in such a manner that the peripheral speed of the oscillating roller is identical to that of the web of material winding around part of the periphery of this oscillating roller and thus always being in contact with the oscillating roller without sliding on the surface of the oscillating roller;
• means for provoking a movement of oscillation of the support and of the roller that it bears;
• and
• means for maintaining the tension of the web disposed at the entrance of the machine and means for cyclically controlling the movement of oscillation of the support and of the oscillating roller that it bears so that the length of the path of the web, between the intake roller and the machine, is lengthened or shortened to give the desired law for the advance of the web in the machine, law including in particular a phase of stop in the machine.