Web guide roller with directionally switched drive coupling

Details Web guide roller with directionally switched drive coupling Web guide roller with directionally switched drive coupling

1994-11-23

1996-04-30

Mansen, Michael R.

Advancing material of indeterminate length

With material-responsive control means

Responsive to break or depletion

101228, 101484, 226108, 226183, B65H 4300, B65H 2002, B41F 1354

Patent

active

055117120

ABSTRACT:
Damage to rotating cylinders in a web-fed rotary printing machine, due to breaks or tears in the material web passing through the machine, is prevented by providing a web guide roller with a directionally switched coupling intermediate two spaced gripping locations. If the web breaks, the web guide roller becomes positively driven and prevents web roll up on one of the rotating cylinders.

REFERENCES:
patent: 3375716 (1968-03-01), Lawrie et al.
patent: 3409237 (1968-11-01), Pospisil et al.
patent: 4398877 (1983-08-01), Taylor
patent: 4508033 (1985-04-01), Fischer
patent: 4549485 (1985-10-01), Narwrath
patent: 5163371 (1992-11-01), Kotterer et al.
patent: 5398610 (1995-03-01), Paviliny et al.

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