Venetian blind

A venetian blind comprising a plurality of slats, a winding drum having a longitudinal axis, said winding drum mounted on a stationary frame, a cord wound on said winding drum, said cord passing through said stationary frame and said plurality of slats and fastened to a lower most slat, said drum having a pully means thereon drivingly connected to a flexible ladder, said flexible ladder having two bands connected to edges of said slats to tilt said slats, a movable member mounted below said drum and mounted to move transverse to said drum longitudinal axis, said movable member having band passages and a cord passage, said bands passing through said band passages and said cord passing through said cord passage, a first stop means attached to one of said bands above an uppermost slat, a second stop means attached to another of said bands above said uppermost slat, said band passages having a size to allow passage therethrough of said stop means, said cord being positioned relative to said movable member to move said movable member to at least a stop position and a non-blocking position, means associated with said movable member in said stop position to block passage of said stop means through said band passages.