Folding apparatus for four or six etchings

摘要

In a folding apparatus for a rotary printing press having a form cylinder with four or six etchings, with a folding cylinder having a plurality of spaced fastening devices on the circumference thereof and a collecting cylinder associated with the folding cylinder with folding blades, grippers or point group cassettes thereon, the improvement comprising, the fastening devices being divided into two groups, each with a number of fastening devices, with the ratio of the number of the fastening devices in each group being a mixed number. Each fastening device is provided with a cam follower and a cam wheel is positioned within the folding cylinder with cams thereon for selectively rendering the folding devices of one of the groups inoperative.