Film tension maintenance means for use in roll-film camera

Details Film tension maintenance means for use in roll-film camera Film tension maintenance means for use in roll-film camera

1974-08-14

1976-02-17

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 75, 2421561, B65H 7700

Patent

active

039387534

ABSTRACT:
A film tension maintenance means for use in a roll-film camera comprising a simply mounted, expandable clasp element, which exerts evenly distributed force on opposite sides of a take-up spool and maintains the take-up spool in a vertical alignment, and steadily expands as film is wound onto the take-up spool, while maintaining pressure countering any tendency of the wound film to uncoil, thereby to ensure unhindered film wind-up and accurate advance of successive film frames to an exposure position.

REFERENCES:
patent: 1250792 (1917-12-01), Burdette
patent: 2029476 (1936-02-01), Githens
patent: 2928538 (1960-03-01), Mills
patent: 3804351 (1974-04-01), Kaneko et al.
patent: 3836984 (1974-09-01), Hertel et al.

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