1975-05-28
1976-10-26
Adams, Jr., Russell E.
354248, 354249, G03B 936, G03B 920
Patent
active
039887545
ABSTRACT:
This invention is directed to a photographic camera having a slit shutter which utilizes two cover systems which operate above the plane of the image. These systems are movable perpendicularly to the direction of movement of the film within the camera. Each cover system comprises displaceable segments movable relative to each other. These can be brought into and out of overlapping position at a corresponding opposed end of the image window. When open, they extend across the window to cover the window, and when closed they recede into overlapping position to uncover the window. While broadly speaking, the so-called "slit shutter" type of shutter has been used, the herein described proposal for providing the open and closed systems is unique. This invention provides multiple segments which are movable relative to each other in which the corresponding slit-forming segment of each cover system is guidingly supported for displacement by link means and at least two cover segments are associated with each slit-forming segment and correspondingly guidingly supported for displacement by straight guide means, preferably so that each of the slit-forming segments and the cover segments associated therewith are connected directly to form a generally parallelogram link formation for common drive.
REFERENCES:
patent: 2927519 (1960-03-01), Matsuda
patent: 3078776 (1963-02-01), Okabe
patent: 3672282 (1972-06-01), Yamada
patent: 3829878 (1974-08-01), Onda et al.
patent: 3903539 (1975-09-01), Kitai et al.
Rentschler Waldemar T.
Starp Franz W. R.
Adams, Jr. Russell E.
March Arthur A.
Prontor-Werk Alfred Gauthier GmbH
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