Flexibly coupled roller chain for threading a substrate web in a

Details Flexibly coupled roller chain for threading a substrate web in a Flexibly coupled roller chain for threading a substrate web in a

1988-07-13

1989-04-11

Eickholt, Eugene H.

Printing

Rolling contact machines

Rotary

226 92, B41F 1354, B65H 2000

Patent

active

048195570

ABSTRACT:
To permit a threading roller chain for a printing machine to flex outside of a plane, for example parallel to the printing machine, and permit passage of the threading mechanism about turning bars and the like, the roller chain is formed of a plurality of bolt elements (1, 16) retaining rollers (2, 19) thereon, and rotatable within the guide track (15, 29). The bolt elements (1, 16) are connected by flexible, preferably steel cables or ropes (4, 5, 22), passed through holes (11, 23) in the bolts and retained therein by pinch or clamp deformation of the bolts. The cables or ropes accept tension forces between adjacent bolts and rollers. To accept compression forces, essentially non-compressible spacer elements (6, 24) are placed between adjacent bolts, preferably in form of tightly wound spiral springs, surrounding the respective cables or ropes. The cables or ropes, with the spacers thereabout, can be passed alongside a single roller (FIGS. 1, 2) or centrally through the bolts and between a pair of rollers located on the bolts (FIGS. 5, 6).

REFERENCES:
patent: 2944345 (1960-07-01), Faeber
patent: 3587461 (1971-06-01), Polglase
patent: 3761001 (1973-09-01), Bolza-Schunemann et al.
patent: 3995553 (1976-12-01), Winterholler et al.
patent: 4187968 (1980-02-01), Winterholler et al.
patent: 4370927 (1983-02-01), Fischer
patent: 4404907 (1983-09-01), Kobler et al.
patent: 4480801 (1984-11-01), Stone
patent: 4706862 (1987-11-01), Theilacker
patent: 4958850 (1986-07-01), Winterholler et al.

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