Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1988-08-29
1989-08-01
Levy, Stuart S.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 74, B65H 7518, G03B 1726
Patent
active
048528218
ABSTRACT:
A spool for holding photographic film, consisting of a core member provided with flanges between which flexible film may be wound and an elongated slot into which the end portion of a film strip may be entered and fastened. Adjacent the flanges are raised shoulders extending about the circumference of the core and above the core surface. The shoulders each gradually increase in thickness in the film-winding direction and terminate in a stepped portion corresponding to the thickness of the film. In a preferred embodiment, shoulder portions accommodate the edge portion of a full-width film, have an initial height above the surface level of said spool, and then rise gradually to an additional height approximately equal to the thickness of the film. When the full-width portion of the film is juxtaposed the spool flanges, said shoulders provide the film with a substantially level transition surface for each convolution of the full-width film, thereby avoiding imperfections on the spool-core surface.
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Armbruster Randy
Decker Michael
Harris Clark E.
Phillips Bradley A.
Childress G. Herman
duBois Steven M.
Eastman Kodak Company
Levy Stuart S.
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