Tensioning apparatus for a web threading endless rope

Details Tensioning apparatus for a web threading endless rope Tensioning apparatus for a web threading endless rope

1993-11-22

1995-01-10

Crowder, Clifford D.

Advancing material of indeterminate length

Threading device

With means to pull lead-end

226118, 226195, 474104, B65H 5938

Patent

active

053799321

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.

REFERENCES:
patent: 3175444 (1965-03-01), Spinney
patent: 3414208 (1968-12-01), Butler, Jr. et al.
patent: 3501075 (1970-03-01), Scharf
patent: 3540642 (1970-11-01), Riegel
patent: 3643497 (1972-02-01), LeCompte
patent: 4049168 (1977-09-01), Cole et al.
patent: 4186861 (1980-02-01), Steinhilber
patent: 4288014 (1981-09-01), Evers

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