Method and a device for catching a printed web after breakage

Details Method and a device for catching a printed web after breakage Method and a device for catching a printed web after breakage

1991-08-12

1992-11-17

Burr, Edgar S.

Printing

Processes

Condition responsive

101219, 101228, 226 11, 226 42, B41F 1354

Patent

active

051633710

ABSTRACT:
In order to catch a broken printed web, which is gripped downstream from a printing unit, and more particularly downstream from the last printing unit of a roll feed rotary printing press, between a driven roll and at least one yoke which is able to be pivoted against the roll in response to the signal of a switch sensing breaking of the web, to ensure a high degree of operational reliability, the roll is initially run at a higher speed than the web and then the effective speed of the roll is made equal to the web speed by the use of a drive device with at least one yielding means therein, the torque transmitted to the yielding means being reduced to a value lower than the web break value at the earliest when the yoke comes into engagement with the roll.

REFERENCES:
patent: 2838303 (1958-06-01), Morley
patent: 3404627 (1968-10-01), Halley
patent: 4508033 (1985-04-01), Fischer
patent: 4549485 (1985-10-01), Nawrath
patent: 4846060 (1989-07-01), Proctor
patent: 4920879 (1990-05-01), Leguillochet et al.
patent: 5036765 (1991-08-01), Keilhau

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