Tensioning apparatus for a web threading endless rope
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United States of America Patent
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-
Nov 23, 1993
Grant Date -
N/A
app pub date -
Oct 28, 1991
filing date -
Oct 28, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compact rope stretcher maintains the tension in an endless rope used for threading a web in a papermaking machine and includes an elongated H-beam having a flange engaged by guide wheels supporting a pair of separate carriages. The carriages support corresponding rope sheaves for free rotation, and a pair of fluid cylinders are mounted on opposite sides of the beam web and have piston rods connected directly to the corresponding carriages by laterally floating links. Proximity sensors are mounted on opposite end portions of the H-beam for indicating when the rope stretch is reaching a limit, and the beam supports a full length cover which encloses and protects the carriages and cylinders.
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