Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1982-05-03
1983-10-04
Gonzales, John
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 711, G03B 1726
Patent
active
044075790
ABSTRACT:
A photographic film assemblage wherein a film spool which supports a roll of film is comprised of two pieces constructed so as to telescopically receive each other. Each piece includes a radially extending flange which is adapted to be located closely adjacent to but not in engagement with a side of the roll of film. The spool is rotatably supported within a housing having a lighttight passageway through which a leading end of the film may extend to the exterior of the housing. To move the leading end into and through the passageway so as to make it available at the exterior of the housing for connection to a film winding mechanism, one merely applies inwardly directed pressure to the opposite ends of the spool so as to move the flanges into contact with the sides of the roll of film. With the film thus confined by the flanges, and while maintaining said pressure, relative rotation in a predetermined direction between the spool and the housing will result in the leading end of the film being moved into and through the passageway. The coefficient of friction of the facing surfaces of the two flanges may be increased by any suitable means so as to increase their gripping effect on the edges of the roll of film. Once the pressure is removed from the ends of the spool, the flanges return to their original positions where they are for all practical purposes out of engagement with the edges of the film.
REFERENCES:
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patent: 3864993 (1975-02-01), Hovind
patent: 4034393 (1977-07-01), Goldmacher
patent: 4047653 (1977-09-01), Starr
patent: 4145133 (1979-03-01), Wareham
patent: 4212527 (1980-07-01), Fischer
Corrigan Alfred E.
Gonzales John
Polaroid Corporation
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