Optics: motion pictures – With film treating or working
Patent
1976-06-28
1979-05-01
Hayes, Monroe H.
Optics: motion pictures
With film treating or working
352129, 356430, 192133, 192135, 15100, G03C 1100
Patent
active
041520530
ABSTRACT:
An apparatus for inspecting motion picture film so as to locate edge cuts and tears, sprocket hole tears, improper splices and tape fragments or other objectionable foreign material on the film surface, which apparatus comprises a supporting frame with a front panel disposed in a generally vertical plane between parallel spaced end frame members and extending above a work table on which are mounted a plurality of work units and control apparatus therefor, the work units being disposed between the end frame members and along a generally horizontal path traversed by the film which is fed from a supply reel and gathered onto a take-up reel, both of which are driven by circuit controlled motors, the work units comprising a film cleaning unit, a defect detector unit, a viewer or an illuminated film viewing light box unit, a splice counter and footage measuring unit and a film tension sensor unit, with integrated circuit electronics for control of all machine functions and with safety devices including a transparent safety hood which automatically moves into place over the reels when the machine is operating to protect the operator from spinning reels and flying chips during high speed inspection and rewind operations.
REFERENCES:
patent: 2382147 (1945-08-01), Hanak
patent: 2491035 (1949-12-01), Deacon
patent: 2802235 (1957-08-01), Brown
patent: 3447866 (1969-06-01), Heisler
patent: 3737219 (1973-06-01), Jorgensen
patent: 3856414 (1974-12-01), Menary
patent: 3906579 (1975-09-01), Manske et al.
Greenawalt Guy A.
Hayes Monroe H.
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