the machine column 14 the lifting mechanism 15 comprises two levers 16 17 that respectively act upon the bearing housings 8 of perforation cylinder 3 in the plane formed by the rotational axes 12 13 these levers are designed with two arms and are installed such that they can pivot on the machine column 14 in this case the one free end of lever 16 17 faces the bearing housing 8 and the opposite lever end is connected to an activation device 18 the levers 16 17 are formed by two uniform parallel lever components 19 20 which are positioned on a shaft 21 that is arranged in the machine column 14 the lever end coordinated with the perforation device has an upward facing receptacle 22 and a tensioning bracket 23 on the opposite side facing the bearing housing 8 the receptacle 22 is used for lifting up and removing the cylinders 3 4 in or from the machine column 14 or the installation of the cylinder 3 4 the receptacle 22 is a component of a sliding track 24 that runs parallel to the rotational axes 12 13 of cylinders 3 4 or lateral to the paper web 1 and which can be interrupted between the levers 16 17 by a connecting element 25 that can be advanced a roller 27 for a lifting frame 28 that rotates freely in a frame 26 which is screwed to the bearing housing 8 is arranged above a receptacle 22 the upper or both cylinders 3.