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
B65H 1740
Patent
active
044692625
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. The pulley has a pair of elements, one of which has axially extending resiliently deflectable posts thereon and the other of which has means thereon engaging the posts. Resiliently deflectable means on the second pulley element 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 and of the posts.
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Data Motion, Inc.
Haugland Scott J.
Levy Stuart S.
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