Advancing material of indeterminate length – By orbitally traveling material-engaging surface – On endless belt or chain
Patent
1981-10-05
1983-11-01
Jillions, John M.
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
On endless belt or chain
226 74, 226 76, B65H 2912, B65H 1738
Patent
active
044126379
ABSTRACT:
A bidirectional document tractor unit having spaced apart laterally adjustable tractor mechanisms each provided with an endless tractor belt which is in driving engagement with a document support belt to provide a document path interposed between the support belt and the tractor belt. The support belts include perforations engageable with the drive pins on the tractor belt. The support belts also are drivably engaged with sprocket members having document drive pins formed thereon. The tractor belts are driven through suitable sprockets in driving engagement with an elongated driveshaft. Movable gates are disposed adjacent to the drive sprockets which provide for lead-in driving engagement with the document which is trained along the tractor belt between the tractor belt and the support belt, then through the printer platen and then along the opposite run of the tractor belts before returning to a document magazine or stack. Formed rod support bars are provided for maintaining oppositely moving runs of the document spaced apart from each other.
REFERENCES:
patent: 2840217 (1958-06-01), Nelson et al.
patent: 3209972 (1965-10-01), Benbow
patent: 3608801 (1971-09-01), Nystrand
patent: 3669327 (1972-06-01), Dowd
patent: 4129239 (1978-12-01), Hubbard
patent: 4214691 (1980-07-01), Namen
Datamarc, Inc.
Huynh Dao Van
Jillions John M.
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