Rollei-werke Franke & Heidecke

Friedrich Papke

Dieter Mankau

Bodo Mielke

Jochen Kramer

Hans Schonfeld

Heinz Hamm

Erwin Scholz

Paul Greger

Lothar Westerweck

Mirror reflex camera

Photographic camera

The invention relates to a crank drive, particularly to a crank drive for photographic cameras having a crank including a crankpin, and a drawbar pivotable about the crankpin. The drawbar consists of first and second rods connected to one another, and disposed in respective substantially parallel planes, which rods are joined or connected by a hinge having a hinge axis substantially parallel to the crankpin axis.

Crank drive for a photographic camera

Each slide is comprised of an exposure slit defining lamella moved on parallel swinging arms in front of the image aperture, whereby the arms overlap each other in part, as well as the lamella to provide additionally shutter functions for covering portions of the aperture which are to be covered but are not covered by the lamella in any phase of movement or position of deployment.

Double slide focal plane shutter

Growing community of inventors

Brunswick, Germany

Friedrich Papke