Web threading system

Details Web threading system Web threading system

1978-10-16

1980-02-05

McCarthy, Edward J.

Advancing material of indeterminate length

Threading device

226 7, 226 97, G03B 156, B65H 2506

Patent

active

041868609

ABSTRACT:
A system for directing the tail of a web of flexible material to a predetermined location including a wall element having side edges and a web entry end and a web exit end and a Coanda nozzle located at the wall element web entry end to direct a gaseous flow therealong toward the web exit end. Venting means in the form of opposed foil elements extend from the Coanda nozzle toward the wall element side edges for laterally venting portions of the gaseous flow past the side edges to exert lateral forces on the web and spread it as the web is propelled along the wall element.

REFERENCES:
patent: 3650043 (1972-03-01), Overly
patent: 3705676 (1972-12-01), Overly
patent: 3999696 (1976-12-01), Reba
patent: 4014487 (1977-03-01), Reba
patent: 4136808 (1979-01-01), Reba

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