Spool for strip-form recording substrates, in particular for pho

Details Spool for strip-form recording substrates, in particular for pho Spool for strip-form recording substrates, in particular for pho

1985-12-13

1991-01-15

Matecki, Katherine

Winding, tensioning, or guiding

Coil holder or support

Spool or core

G03B 1904, B65H 7528

Patent

active

049847511

ABSTRACT:
A spool for strip-form recording substrates, in particular for photographic films, with a slit arranged in the spool core and means arranged therein for fixing the strip end inserted into the slit, and with transitional surfaces which are rounded in the approximate shape of a cylinder surface on the inlet side between the axially running upper and lower slit surfaces and the external surfaces of the spool core, which are arranged in kink-free manner between the adjacent surfaces of the spool core and each form an arc portion of more than 90.degree. in cross section, the radius thereof being at least one third of the radius of the spool core.

REFERENCES:
patent: 1930144 (1933-10-01), Lee
patent: 2477010 (1949-07-01), Schmidt
patent: 3973740 (1976-08-01), Schankler
patent: 3982709 (1976-09-01), Hertel
patent: 4384687 (1983-05-01), Lamoureux
patent: 4506843 (1985-03-01), Luhrig et al.

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