Mandrel and core assembly for large format cameras

Details Mandrel and core assembly for large format cameras Mandrel and core assembly for large format cameras

1982-07-15

1984-04-03

Petrakes, John

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 68, 242 71, B65H 7502

Patent

active

044403577

ABSTRACT:
A combined mandrel and core assembly for a camera in which an elongated, cylindrical hollow core, upon which a roll of photosensitive material is carried, is supported by a cylindrical mandrel rotatably mounted within the camera. A spring loaded detent within a slot in the mandrel extends through the slot into a complimentary slot at the midpoint between the ends of the core. The mandrel slot is precisely located upon the longitudinal optical axis of the camera's image plane. The core and its photosensitive material are thereby quickly and accurately positioned along said optical axis. Different widths of photosensitive material may be used upon the same mandrel.

REFERENCES:
patent: 670683 (1901-03-01), Moore
patent: 1055576 (1913-03-01), Tyler et al.
patent: 1068895 (1913-07-01), Harper
patent: 1260898 (1918-03-01), Harrell
patent: 1362397 (1920-12-01), Colter et al.
patent: 1479253 (1924-01-01), Rivetta
patent: 1482339 (1924-01-01), Abeles
patent: 4129266 (1978-12-01), Masiello
patent: 4191342 (1980-03-01), Reinhold

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