Spool for photographic film or other web material

Details Spool for photographic film or other web material Spool for photographic film or other web material

1989-08-21

1990-12-18

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 7528, G03B 1726

Patent

active

049780840

ABSTRACT:
A spool for photographic film has a generally cylindrical core with flanges at the end portions of the core. A slot through the core receives an end portion of the film that is to be wound onto the spool. Hooks in the slot are engaged with the film through apertures in the film for attaching of the film to the spool. In order to avoid locking of two spools together during bulk handling, as can occur when a flange of one spool enters the slot of another spool, the outer edge of one wall defining the slot is chamfered and generally V-shaped. The edge of the wall forms a large obtuse angle and is substantially aligned with the tip ends of the hooks so that the chamfered wall and the tip ends prevent a spool flange from becoming locked in the slot of another spool.

REFERENCES:
patent: 1930144 (1933-10-01), Kodak
patent: 3361380 (1968-01-01), Fuji
patent: 4834310 (1989-05-01), Konica
patent: 4852821 (1989-08-01), Harris et al.

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