Shutter drive synchronously set with film frame and flash cube s

Details Shutter drive synchronously set with film frame and flash cube s Shutter drive synchronously set with film frame and flash cube s

1975-09-12

1977-04-05

Griffin, Donald A.

G03B 1503

Patent

active

040165817

ABSTRACT:
A shutter type flash camera is provided with novel means for synchronously setting the shutter drive thereof as the camera film transport mechanism is set to a next unexposed frame, while a flash cube mounting is simultaneously rotated to a next sequential position. The film transport mechanism includes an external gear rotatably mounted on the camera housing. In mesh therewith is a second gear having external and internal gearing. The mesh between the first and second gears occurs between the external gearing of both. Eccentrically mounted within the second gear is a smaller external third gear which meshes with the internal gearing of the second gear. A crescent shaped space is defined between the second and third gears. As the first gear mounted on the film transport mechanism is rotated counterclockwise, the second and third gears are correspondingly rotated in a clockwise position. Mounted on the underside surface of the second gear are a plurality of cams in relative spaced relationship. The cams cooperate with a centrifugal lever mounted in the camera shuttering mechanism for releasing the camera shutter whereby an exposure occurs. The centrifugal lever is also cooperatively connected to an ignition plunger which is shifted to a second ignition position for igniting the flash cube as the shutter is simultaneously released, the second position being in the crescent shaped space.

REFERENCES:
patent: 3353467 (1967-11-01), Ernisse et al.
patent: 3463068 (1969-08-01), Engelsmann et al.
patent: 3687033 (1972-08-01), Beach
patent: 3714877 (1973-02-01), Schroder
patent: 3735679 (1973-05-01), Winkler
patent: 3882519 (1975-05-01), Winkler et al.

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