Branching apparatus for a paper-web threading guide of a rotary

Details Branching apparatus for a paper-web threading guide of a rotary Branching apparatus for a paper-web threading guide of a rotary

1997-05-15

1998-10-06

Jillions, John M.

Advancing material of indeterminate length

Threading device

With means to pull lead-end

G03B 156

Patent

active

058164650

ABSTRACT:
A branching apparatus is provided in a paper-web threading apparatus of a rotary press in which, in order to thread a paper web into a threading path of the rotary press, threading guides are disposed at side portions of the threading path to extend therealong, thereby forming a threading-member traveling path through which a threading member can travel. The branching apparatus includes a branch threading guide in which a plurality of downstream threading-member traveling paths are formed such that they communicate with a single upstream threading-member traveling path via respective branching points, shifters disposed in the vicinity of the branch threading guide and having guide edges which operates at the branching points of the branch threading guide so as to guide the threading member to a selected downstream threading-member traveling path while closing the unselected downstream threading-member traveling path, and a drive for moving the shifter so as to selectively open and close the downstream threading-member traveling paths. It is possible to allow smooth traveling of the threading member. In addition, the branching apparatus can be simplified and be made compact.

REFERENCES:
patent: 3995553 (1976-12-01), Winterholler et al.
patent: 4370927 (1983-02-01), Fischer
patent: 4987830 (1991-01-01), Fukuda et al.
patent: 5052295 (1991-10-01), Suzuki et al.
patent: 5320039 (1994-06-01), Reponty et al.
patent: 5400940 (1995-03-01), Sato et al.

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