Continuously operating device for directing pressing or pulling force at an object fed in relation to the device

A continuously operating device for directing pressing or pulling force at an object fed in relation to the device, at that part of the object which is at the location of the device, said device comprising:

• at least two pairs of roller means, said pairs of roller means being located at a distance from one another in a direction of movement of the object, each said pair of roller means creating a nip, each said roller means in each said pair of roller means having an axis of rotation, an actuator connected to and supported by at least one roller means of at least a first one of said pairs of roller means, said actuator rotating with said at least one roller means for which the object is arranged to travel, effecting a rotary movement concentric with respect to the axis of rotation of the at least one roller means, the actuator being arranged to transmit said rotary movement and a rotary force by mechanical power transmission means to at least one roller means of another pair of said roller means, a drive shaft for supplying driving power of the actuator, said drive shaft arranged to rotate concentrically with respect to the axis of rotation of the at least one roller means of the first one of said roller pairs, but independently with respect to the axis of rotation, said drive shaft being rotated by a power means, and said rotary force transmitted by said actuator as a result of the driving power supplied by said independently acting drive shaft to said actuator acting in a first mode in a first direction parallel with a direction of rotation of said at least one roller means to effect said pulling force and acting in a second mode in a second direction in opposition to said direction of rotation of said at least one roller means to effect said pressing force.