placed atop first slat and is connected to a third line which moves one end portion of the elongated second slat along the top of the first slat application_number US 69506585 A description the venetian blind described in fig1 4 of the present invention is designated by reference character 10 in its entirety a venetian blind 10 includes as one of its elements a first slat 12 fig1 3 first slat 12 includes a top 14 bottom 16 and edge portion 18 therebetween first slat 12 may be of conventional construction and includes an opening through the center 20 for guideline or liftcord 22 slat 12 may be constructed of known materials such as aluminum wood and the like first and second lines 24 and 26 tilt slat 12 in the known manner bridging lines 28 and 30 extend beneath bottom 16 and above top 14 of slat 12 to control the tilting of first slat 12 by lines 24 and 26 it should be noted lines 24 and 26 may be included in a worm gear mechanism known in the art a second elongated slat 32 is also depicted in fig1 through 4 second slat 32 possesses the same general shape as first slat 12 but may be constructed of material having a different.