Optics: motion pictures – Camera and/or projector drive mechanisms – With starting and/or stopping means
Patent
1976-05-11
1978-02-07
Hayes, Monroe H.
Optics: motion pictures
Camera and/or projector drive mechanisms
With starting and/or stopping means
352169, 352177, G03B 100
Patent
active
040724093
ABSTRACT:
A motion picture camera with a release device capable of selective control of rotative movement of the shutter blade in the camera for a normal motion picture sequence and for a single frame slot depending upon the position of a selector therefor. The release device is provided with the single stop lever arranged between the shutter blade and a release member to be pivoted in either of two planes, perpendicular to each other. For a motion picture sequence, as the pivotal movement of the stop lever is limited to only one of the planes, it is retained in operative engagement with the release member so long as the latter is pressed, thus permitting a number of revolutions of the shutter blade in sequence. When the selector is manually switched to the single frame position, a disengage actuator is brought into cooperation with both of the shutter blade and the stop lever in such a manner that just after an exposure aperture is covered by the shutter blade to terminate a single frame exposure, the disengage actuator causes a pivotal movement of the stop lever in the other plane which in turn causes the stop lever to be taken out of the operative engagement with the release member as the stop lever is pivoted in the first-named plane regardless of the fact that release member is pressed. This results in operative engagement of the stop lever with the shutter blade to stop the shutter blade in the exposure aperture closed position.
REFERENCES:
patent: 3178721 (1965-04-01), Kamp
patent: 3512881 (1970-05-01), Kubota
patent: 3520598 (1970-07-01), Murata
Hirata Noritsugu
Ishikawa Kazuo
Takigawa Tomoshi
Canon Kabushiki Kaisha
Hayes Monroe H.
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