Exposure time adjusting device for electric shutters

Claim 2

In a camera having a shutter; shutter-actuating means including a movable trigger lever for effecting both opening of said shutter in response to movement of said trigger lever in one direction and then closing of said shutter; electric delay means including a timing switch actuated during movement of said trigger lever in said one direction for maintaining said shutter open a predetermined time period after actuation of said timing switch; and adjusting means for selectively adjusting the time duration between the actuation of said timing switch and the actual opening of said shutter independently of said predetermined time period.

Claim 3

A camera according to claim 1; wherein said adjusting means comprises means cooperative with said shutter-actuating means for adjusting the position of said shutter relative to said timing switch.

Claim 4

A camera according to claim 2; wherein said last-mentioned means comprises a pair of relatively movable levers, and means for selectively adjusting the relative position of said pair of levers to accordingly effect adjustment of the position of said shutter relative to said timing switch.

Claim 5

A camera according to claim 3, wherein said pair of movaBle levers are superimposed one upon the other and one of said levers has means therein defining a groove, and wherein said means for selectively adjusting the relative position of said pair of levers comprises an eccentric pin adjustably connected to the other of said levers extending into said groove and engaging with said one lever whereby adjustment of said eccentric pin effects relative movement of said pair of movable levers.

Claim 6

An exposure control mechanism for an electrically controlled photographic shutter comprising: displaceable release means for effecting opening of the shutter, electric delay means for maintaining the shutter open a predetermined time period, a timing switch actuated in response to displacement of said release means to effect energization of said electric delay means, shutter closing means operable by said electric delay means to effect closing of the shutter, and adjusting means for selectively adjusting the starting position of the shutter so as to alter the time interval between actuation of said switch and the actual opening of the shutter, whereby said time interval may be adjusted to compensate for the time delay between the operation of the electric delay means and the actual closing of the shutter.

Claim 7

An exposure control mechanism for an electrically controlled photographic shutter comprising: displaceable release means for effecting opening of the shutter, electric delay means for maintaining the shutter open a predetermined time period, a timing switch actuated in response to displacement of said release means to effect energization of said electric delay means, shutter closing means operable by said electric delay means to effect closing of the shutter, and adjusting means for selectively adjusting the starting position of the shutter so as to alter the time interval between actuation of said switch and the actual opening of the shutter, whereby said time interval may be adjusted to compensate for the time delay between the operation of the electric delay means and the actual closing of the shutter.

Claim 8

An exposure control mechanism according to claim 5, wherein said adjusting means includes a governor effective to variably adjust the starting position of the shutter.