Threading vacuum sheave for a tissue calender

Details Threading vacuum sheave for a tissue calender Threading vacuum sheave for a tissue calender

1993-11-22

1995-10-10

Lacey, David L.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162193, 162361, 162368, 162369, 162370, 162372, 226 7, 226 95, 226 97, 2426153, 242548, 100173, 100174, D21F 702

Patent

active

054568021

ABSTRACT:
A vacuum/blowing sheave on the end of the lower calender roll of a papermaking machine threads a tissue web tail from a Yankee dryer to a take-up reel through the calender. The sheave is positioned adjacent to the outlet of the threader tube from the Yankee dryer, where the vacuum portion of the sheave picks up the tail and transports it towards the take-up reel. Upon transiting the closed nip of the calender, the tail is blown by a short blowing section on the sheave into the tube threader which leads to the take-up reel.

REFERENCES:
patent: 1732833 (1929-10-01), Carpenter
patent: 2714840 (1955-08-01), Bayrer et al.
patent: 3705676 (1972-12-01), Overly et al.
patent: 3756486 (1973-09-01), Howorth et al.
patent: 3853279 (1974-12-01), Gerstein
patent: 4074441 (1978-02-01), Helversen et al.
patent: 4324613 (1982-04-01), Wahren
patent: 4759512 (1988-07-01), Gaiser
patent: 5042347 (1991-08-01), Baum et al.

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