Shutter release device for camera

Claim 1

A shutter release device for a camera comprising, an electric exposure control means having an exposure control electric circuit including a main switch and an electromagnet whose energizing current begins to flow with closure of said main switch, the end of the flow being controlled by the electric circuit while the main switch is in closed condition: a shutter opening means; a shutter closing means; first shutter release means manually operable for closing the main switch and initiating a shutter opening action of the shutter opening means when operated for shutter release; a restricting member movable between a first position and a second position and normally located at the first position, the restricting member being attracted to and retained at the second position by the electromagnet to prevent a shutter closing action of the shutter closing means upon energization of the electromagnet and being returnable to the first position to initiate the shutter closing action upon denergization of the electromagnet, second shutter release means manually operable independently of the first shutter release means to mechanically advance and keep the restricting member to and at the second position and to initiate the shutter opening action when operated for shutter release, the second shutter release means being returnable to permit the restricting member to return to the first position and initiate the shutter closing action when freed from the shutter release operation.