Eastman-kodak Company

Horst Simon

Hermann Dieterle

Manfred Leutwein

Dietmar Blattner

Heinz G Bethmann

Heinrich Killguss

Heinz Kilguss

Otto Wisst

Cutting and mounting apparatus

In a photographic shutter, an opening blade and a closing blade are settable in respective tensioned positions from which the blades can be released to first uncover and then recover an exposure opening. A cam device is mounted for unidirectional rotation to release the blades from their tensioned positions and to reset the blades to such positions. The cam device has an arcuate camming surface which extends spirally about the axis of the cam device from an area of minimum radius to an area of maximum radius as the cam device is rotated. A step-like surface of the cam device connects the areas of maximum and minimum radii to cause an abrupt drop from the maximum radius area to the minimum radius area. Respective springs urge the opening and closing blades against the camming surface. This causes each blade to be released from its tensioned position to drop from the maximum radius area to the minimum radius area when the maximum radius area moves out of the way of the blade, and causes each blade to be reset to its tensioned position when the maximum radius area moves back to the blade.

Photographic shutter

An improved exposure control apparatus for use in a camera having a shutter mechanism utilizing a setting member with first and second positions corresponding to first and second exposure time setting positions of the shutter mechanism. A spring linkage is provided to urge the setting member towards its first position. The spring linkage, upon manual movement of the setting member to its second position, cooperates with structure within the camera to releasably retain the setting member in its second position. A release member, actuated by the preparation of the camera for the next exposure, releases the spring linkage simultaneously with increasing the restoring force exerted on the setting member by the sprink linkage.

Exposure control apparatus having two exposure time setting positions

An improved shutter mechanism of the sliding blade-type for synchronizing the firing of a flash device with the movement of one of the shutter blades to effect an exposure. During movement of the blade, an abutment surface on the blade momentarily closes the contacts of a switch to activate an electrically-fired flash device. A second abutment surface, located on either the shutter blade or a cover blade, prevents closing of the switch contacts during recocking of the shutter mechanism.

Shutter mechanism

Growing community of inventors

Fellbach, Germany

Horst Simon