Apparatus for threading a paper web into the folding mechanism o

Details Apparatus for threading a paper web into the folding mechanism o Apparatus for threading a paper web into the folding mechanism o

1977-12-19

1980-02-12

Schacher, Richard A.

Advancing material of indeterminate length

Threading device

With means to pull lead-end

226 97, 226197, B65H 2332

Patent

active

041879686

ABSTRACT:
To provide for automatic threading of a paper web throughout an entire printing press equipped with a press threading mechanism, and also over the folding former thereof, two paper guide baffles are located at the back side of the folding former extending in converging direction from the edges of the former to the tip thereof and up to the nip between a pair of take-up rollers located below, and adjacent the tip of the former. Air pressure differential generating means, typically air blast nozzles are directed towards the guide baffles to generate an under pressure adjacent to surfaces thereof which will pull paper downwardly into the nip between the take-up rollers. The take-up rollers themselves have a knurled, or ribbed surface and are driven by air blasts directed against the ribbing of the surface, to move paper which is guided over the folding former by the air blasts away and through the former mechanism. Thus, threading of the press can be done entirely automatically, eliminating the requirement of a pressman, threading the paper web over the former.

REFERENCES:
patent: 3548783 (1970-12-01), Knapp
patent: 3999696 (1976-12-01), Reba
patent: 4063505 (1977-12-01), Sasamoto

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