Perfected system to graduate the passage of the light through transparent panels, variating its color, to achieve its total opacity. (Machine-translation by Google Translate, not legally binding)

摘要

System perfected to adjust the passage of light through transparent panels, varying its color, until achieving its total opacity, characterized by the fact that to simplify the system and reduce the cost of installation, the transparent plate can be removed interior of the opening that is covered with the adjustable brightness panel, arranging the translucent screen with respect to the single transparent plate, so that it can ascend or descend parallel to it, by means of its respective rollers, between which the transmission by pulleys, joined by cord, belt or chain by an automatic winding mechanism that works by the action of a shooter, which causes the curtain to be rolled. (Machine-translation by Google Translate, not legally binding)