| 摘要 |
A web transport by which a thin strip or web of material is driven by a novel roller having inclined confronting faces which grip the web by the extreme edges, avoiding any wear or damage to the web faces. In one form the drive returns the web in the general direction of the supply and permits slippage when the web from the supply is slack, but grips for a positive drive upon slight tension in the web supply. In another form, essentially positive drive is obtained at all times in a straight through configuration, both forms being adaptable to film, tape and other strip elements.
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