Abstract: This invention is an improvement over my U.S. Pat. No. 4,326,577 for a window screen arrangement comprising a novel roller combination for winding and unwinding the screen or shade element and at the same time positioning of the entire screen assembly in a desired position vertically on a window to provide partial screening in any part of the window while at the same time permitting additional screening provided by the operation of the screen upon a roller. The method of supporting the screen in the window opening comprises a novel arrangement of cords for support and positioning which permit the foregoing without the use of pulleys, springs, counter-weights, hooks, clamps or other positioning devices to hold the screen assembly in any given location by permitting its roller features to function.

Abstract: A window screen arrangement comprises a novel roller combination for winding and unwinding the screen or shade element and at the same time providing for positioning of the entire screen assembly in any desired position vertically on a window to provide partial screening in any part of the window while at the same time permitting additional screening provided by the operation of the screen upon a roller. The method of supporting the screen in the window opening comprises a novel arrangement of cords for support and positioning which permit the foregoing without the use of pulleys, springs, counter-weights, hooks, clamps, or other positioning devices to hold the screen assembly in any given vertical location while permitting its roller features to function.