| 摘要 |
Method and apparatus for dispensing a web of material including; at least one roller adapted to engage said web; structure for rotationally driving said roller when said web is drawn from said roller at a preselected force; planetary gear assembly associated with said driving structure for varying the rate of rotationally driving said roller in response to variation in said force drawing said web from said roller so as to maintain said drawing force at said preselected level.
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