Clip-on star wheel substitute

摘要

As a substitute for the transfer or star wheel, for preventing paper wrinkling in the chain delivery section of a printing apparatus, which chain delivery section has a pair of continuous chains upon which chains are mounted a plurality of paper gripping members, wherein the chains include a plurality of pairs of links pivotally attached by pintles, an improvement comprising a pair of opposing clips detachably mountable on a link on the respective one of the chains, without the need for adding a protrusion to the link or pintle, and including a support, a bar fixedly engaged by the supports against rotation about the longitudinal axis of the bar and paper contacting members longitudinally adjustably mounted on the bars. Also disclosed is the paper contacting members being eccentric in shape and having a bearing surface with the eccentric being rotatably adjustable about the longitudinal axis and held against further rotation during operation of the chain delivery.