Apparatus for facilitating engagement between film and film actu

Details Apparatus for facilitating engagement between film and film actu Apparatus for facilitating engagement between film and film actu

1976-08-12

1977-06-07

Hayes, Monroe H.

Optics: motion pictures

With film treating or working

352 72, 352 78R, G03C 1100

Patent

active

040279561

ABSTRACT:
Apparatus for facilitating the achievement of locking engagement between the film strip contained in a film cassette of the type in which the film may be exposed, processed and projected without removal from the cassette, and a pull-strip for removing a tear-tab closure initially sealing a supply of processing fluid within the cassette. The supply end of the film strip contains a bottle-shaped aperture through which a tapered latching tongue provided at the free end of the pull-strip passes upon initiation of rewind after exposure. The supply reel hub is provided with a latching tongue receiving surface lying below the film receiving surface of the hub which, upon continued advancement of the film strip, receives and supports the latching tongue to fold it back upon itself.
The bottle-shaped aperture in the film strip includes a first section through which the tapered latching tongue initially passes and a locking section communicating with the first section by a narrow passageway defined by a pair of inwardly extending tabs. The passageway defined by the inwardly extending tabs is narrower than the tapered latching tongue and the tabs are caused to deflect downwardly into the region below the hub surface and above the latching tongue receiving surface to further facilitate passage of the latching tongue into locking engagement with the film strip aperture responsive to the resisting force of the initial removal of the tear-tab closure.

REFERENCES:
patent: 3895862 (1975-07-01), Stella
patent: 3923520 (1975-12-01), Burke
patent: 3951530 (1976-04-01), Czumak

Affiliated with

Also associated with

Rating

Apparatus for facilitating engagement between film and film actu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for facilitating engagement between film and film actu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for facilitating engagement between film and film actu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1233641