Arrangement for transporting photographic film, and the like

Details Arrangement for transporting photographic film, and the like Arrangement for transporting photographic film, and the like

1976-01-26

1980-02-26

Stoner, Jr., Bruce H.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

On endless belt or chain

271274, B65H 1724, B65H 502

Patent

active

041901851

ABSTRACT:
Sheet material is physically contacted only at its lateral edge portions by transport elements for transporting the sheet material along a predetermined transport path. The central portions of the sheet material are not physically contacted, to prevent damage to them. Because the sheet material is held only at its lateral edge portions, sagging or bulging of the central portion of the sheet material could occur. To prevent this, the sheet material is tensioned in direction transverse to the sheet material transport direction, during actual transport, to an extent sufficient to prevent sagging or bulging of the sheet material during such transport.

REFERENCES:
patent: 562831 (1896-06-01), Iles
patent: 2880998 (1959-04-01), Middleton et al.
patent: 2899201 (1959-08-01), Pirot
patent: 3120794 (1964-02-01), Gold
patent: 3256558 (1966-06-01), Andersen et al.
patent: 3342386 (1967-09-01), Rademacher
patent: 3611407 (1971-10-01), Alden

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