Patent ID: 7028598

Claim:
An apparatus for both transversely and longitudinally perforating a paper web at a folding station of a web-fed printing press, comprising: (a) feed means including a feed roller for feeding the web into and through the folding station; (b) transverse perforator means for creating series of perforations transversely in the web, the transverse perforator means including a blade cylinder extending along a first transverse axis for rotation thereabout and an anvil cylinder for making perforating engagement with the blade cylinder via the web and extending along a second transverse axis for rotation thereabout; (c) a longitudinally perforating blade carrier shaft rotatably supported opposite the feed roller and operative to pivot about the second transverse axis; (d) a longitudinally perforating blade mounted to the longitudinally perforating blade carrier shaft for joint rotation therewith; (e) an anvil formed on the feed roller for engaging the longitudinally perforating blade on the longitudinally perforating blade carrier shaft via the web in order to enable the longitudinally perforating blade to create a series of perforations longitudinally in the web; (f) longitudinally perforating blade retractor means for pivotably moving the longitudinally perforating blade together with the longitudinally perforating blade carrier shaft about the second transverse axis into and out of perforating engagement with the anvil on the feed roller; and (g) drive linkage means for drivingly linking the transverse perforator means to the longitudinally perforating blade carrier shaft for synchronous rotation.