Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1982-08-11
1984-09-04
Levy, Stuart S.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
226 75, B65H 1740, G03B 130
Patent
active
044692633
ABSTRACT:
A tractor for a web feeding assembly has a chassis providing a pair of apertures extending therethrough and a belt extending thereabout. A drive pulley mounted in one of the chassis apertures is engaged with the driven surface of the belt and has an aperture therethrough receiving the drive shaft. Resiliently deflectable means on the pulley defines at least a portion of the shaft receiving aperture and resiliently bears upon the drive shaft over a portion of its length. The deflectable means provides a passage portion of reduced cross section to engage the surface of the shaft. As a result, irregularities in the drive shaft, and variations in axial spacing of the shafts occuring during operation, may be accommodated by deflection of the deflectable means.
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Data Motion, Inc.
Haugland Scott J.
Levy Stuart S.
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