B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
342/11, 242/13,
B65H 23/00 (2006.01)
Patent
CA 1193235
ABSTRACT A roll drive apparatus for driving a continuous length of material upon demand, from a feed roll and winding that material onto a take-up roll comprising a frame; a driven rotating feed roll mounted on the frame; a driven rotating take-up roll mounted on the frame at a distance from said feed roll; a spring loaded counterweighted displaceable dancer rod having a zero position and a maximum position contacting said material at a point between said feed roll and said take-up roll and adapted for being displaced between said zero position and said maximum position by tension changes of said material; a first variable speed motor means mounted on said frame and connected to said feed roll for rotating said feed roll; a second variable speed motor means mounted on said frame and connected to said take-up roll for rotating said take-up roll; and a dancer rod displace- ment sensing means connected to said dancer rod and said first motor means and mounted on said frame and adapted for continuously adjusting the speed of said first motor means is disclosed.
418146
Dunsmuir George H.
Pro Forms Equipment Ltd.
LandOfFree
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