Mechanism for Raising anf Lowering a Dual Shade Convering a Window

A mechanism for operating a dual shade covering a window with a single handle. The mechanism provides a first glide attached by a pulley system to the first shade of the dual shade, and a second glide attached by a pulley system to the second shade of the dual shade. The first glide and the second glide are slibably disposed within a track assembly, and a master glide is disposed in the track assembly between the first glide and the second glide. The master glide engages the first glide to lower the first shade, and is detached from the first glide along the track assembly by a disengaging plate. The master glide engages the second glide to lower the second shade, and is detached from the second glide along the track assembly by a disengaging plate.