Web cutting apparatus employs a rotary knife cylinder with elongated, radially outwardly projecting knife blade assemblies spaced around its periphery. A rotary anvil cylinder spaced parallel to the knife cylinder carries a corresponding peripheral array of elongated anvils. When the two cylinders rotate, the knife blades bear against the anvils at the nip between the two cylinders. The knife blade assemblies are flexible and resilient so that each blade edge is biased against its anvil at the instant of interference, with a local force sufficient to cut web. Further, the natural frequency of the knife assemblies is selected to be considerably higher than those of the other machine parts so that the spacing between the knife blades and the anvils at the nip is substantially unaffected by vibrations of those parts. Also the apparatus efficiently removes trim strips produced by the web cuts.
Apparatus For C-Folding Paper With Variable Spacing
John Cogswell - Maynard MA Robert Fokos - Wayland MA
Assignee:
Sequa Corporation - New York NY
International Classification:
B65H 4522
US Classification:
493423
Abstract:
A paper product traverses a straight line path through a folding apparatus defined by two folding stations that are mounted independently of one another. Each station includes supports, a central frame extending along the paper folding path, and belt arrangements for gripping, propelling and folding a laterally projecting portion of the paper. Each station is mounted for a lateral translation of the entire station perpendicular to the paper path. In the preferred form, this translation is accomplished with racks associated with each stand and pinions carried on a common drive shaft that engage the racks. Both stations also preferably include an arrangement for rotating the station as a whole in the horizontal plane to adjust the squareness of the fold.
John A. Cogswell - Medfield MA Fred E. Klaszky - Glen Ellyn IL Anthony S. Jacobs - Glencoe IL
Assignee:
The Wessel Company, Inc. - Chicago IL
International Classification:
B65G 5714
US Classification:
214 6D
Abstract:
An apparatus piles a continuous stream of booklets in a stack, with a succeeding booklet in the stream being piled atop a preceding booklet. When the stack attains a predetermined size, the stack is ejected from the apparatus without stopping delivery to the apparatus of the continuous stream of booklets which are accumulated in a temporary holding stack, during ejection of the other stack. The temporary holding stack is depleted at a rate faster than it formed, following the ejection of the other stack.
John Cogswell - Wayland MA Robert Fokos - Wayland MA
Assignee:
Sequa Corporation - New York NY
International Classification:
B65H 2968
US Classification:
271182
Abstract:
A stacking apparatus for signatures includes a signature-carrying belt positioned with respect to incoming signatures to raise the trailing edge of each signature and form a reverse shingle stream of signatures. A retarding wheel positioned above the signature carrying belt slows the travel of the signatures as they enter the stacker. The signatures pass through a nip created between the retarding wheel and the signature carrying belt. The signature carrying belt carries the reverse shingle stream from a horizontal orientation to a vertical orientation and then to a signature collector that includes a transport belt. A belt drive activated by a sensor of the pressure in the stack collected on the belt carriers the stack in a direction away from the signature carrying belt. The collector includes a vertical barrier that supports the collected signatures in a vertical orientation and automatically adjusts its position to accommodate varying quantities of signatures stacked in the collector.