Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Rotating sprocket
Patent
1978-07-31
1980-11-25
Christian, Leonard D.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Rotating sprocket
226 87, G03B 124
Patent
active
042353602
ABSTRACT:
A pin feed apparatus is provided for a printing machine of the type including a main frame and a printing station. The pin feed apparatus is capable of feeding marginally punched record material past the printing station and includes a shaft rotatably mounted to the main frame, a platen mounted about the shaft for rotation therewith, and a pin wheel feeding device for feeding marginally punched record material disposed about the platen past the printing station. The pin wheel feeding device includes a housing coupled to the shaft adjacent an end of the platen for rotation therewith. The housing has a plurality of openings formed therein and the pin wheel feeding device further includes a cam member fixed in position relative to the housing and a plurality of pins disposed within the housing in respective alignment with the plurality of openings. The pins cooperate with the cam member during rotation of the housing to project from their respective openings for a predetermined segment of their path of circumferential movement. The pin feed apparatus further includes guide means connected to the frame and including a pair of guide members positioned on either side of the path of circumferential movement of the pins. The guide members are located adjacent the predetermined segment to define a gap between each guide member and the housing through which record material is advanced during rotation of the shaft.
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Christian Leonard D.
Smith Barry Paul
Xerox Corporation
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