Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Pins on flexible belt or chain
Patent
1983-11-10
1986-01-28
Hornsby, Harvey C.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Pins on flexible belt or chain
226171, 4006161, B65H 1740
Patent
active
045666180
ABSTRACT:
A tractor for a web feeding assembly having spaced support and drive shafts 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, and a cantable insert within a pulley body defines at least a portion of the drive shaft receiving aperture. As a result, irregularities in the drive shaft, and variations in axial spacing of the shafts occurring during operation, may be accommodated by canting movement of the cantable insert within the pulley body. A convexly arcuate belt support surface cooperates with the drive pulley to define the web drive path for the belt therebetween. A resilient spring clamp is mounted adjacent the other aperture in the chassis and releasably clamps the tractor on the support shaft. The mounting desirably permits the clamp to rotate about the axis of the aperture receiving the support shaft.
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Seitz Alan F.
Seitz Karl G.
Data Motion, Inc.
Haugland Scott J.
Hornsby Harvey C.
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