Camera shutter control means

Patent

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Details

G03B 1738

Patent

active

041346599

ABSTRACT:
A camera shutter control mechanism for controlling a shutter opening comprises an opening member movable in an opening direction for opening the shutter opening to start an exposure and a closing member movable in a closing direction for closing the shutter opening to terminate the exposure. Opening and closing pawls releasably lock the opening and closing members in their charged positions. An operating member actuates the opening pawl so as to release the opening member for movement in the opening direction and during the course of such movement, the opening member actuates an interlock lever which in turn actuates an adjustable fulcrum lever for actuating the closing pawl to release the closing member for movement in the closing direction. An exposure period setting member is arranged so as to adjust the operation of the fulcrum lever with respect to the closing pawl and for selectively effecting movement of the fulcrum lever to operative and inoperative positions. A control lever operates the closing pawl in the event the fulcrum lever is adjusted to a position in which it is unable to do so. The control lever is releasably locked in a charged position by an engagement pawl which releases locking engagement with the control lever upon movement of the opening member in the opening direction.

REFERENCES:
patent: 4044368 (1977-08-01), Inoue

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