Patent ID: 7905475
Filing Date: 2011-03-15
Classification: B65H

Abstract:
1. A system for positioning a plurality of signatures for binding, the system comprising: a gathering chain that transports transport the plurality of signatures to a stitching head; a plurality of swords, each of the plurality of swords separating a new signature from a document in production; a plurality of vent caps, each vent cap having no more than three equally spaced openings that create airflow that expands and flows downward in an essentially inviscid manner thereby generating a low-pressure region beneath the new signature when deposited by a feeder onto the document in production, wherein the new signature conforms to and is aligned with the document in production, and does not deviate from the gathering chain as a result of the generation of the low-pressure area; and a stitching head that binds the new signature with the document in production.