Abstract: A simplified gear box for intermittently displaying a number of displays on a display apparatus is comprised of a partial gear driven by a drive shaft, the partial gear cooperates with a number of pins on a rotatable pin wheel which is secured to a triangular shaped display element so as to intermittently rotate the display element upon rotation of the pin wheel. A number of gear boxes are connected to a number of triangular elements to intermittently synchronously rotate all of the triangular display elements, to display different images upon a face of the display apparatus.

Abstract: A vertical blind system includes a head casing having a track and open ends with interchangeable end caps held in the open ends and a plurality of suspended vertical blinds held vertically by a plurality of carriers movable along the track in the head casing between the end caps. Each carrier has an elongate, open sided, substantially rectangular hollow housing with a vertical blind holder rotatably secured therein, coacting with a worm gear rotatably also mounted therein adjacent to and in engagement with a further gear formed on the vertical blind holder. A rachet is formed interiorly of the worm gear, and a holding element for a pull cord is formed integrally with the housing and includes a resilient opening to allow quick and easy insertion of the pull cord into the holding element from outside of the head casing.

Abstract: The louvers of vertical louver system are provided with strengthened and color changing resistant clear transparent holding means that is secured to each louver as a clear transparent unitary assembly on a back, that may be clear and transparent or opaque, over the entire mating surfaces of the holding means and the back.

Abstract: An adjustable track means for louver-type drapes or blinds having a telescoping supporting frame and telescoping driving means for drawing the drapes transversely and for rotating the individual louvers is described.