Abstract: A roller screen includes a gauze screen, a roll-up mechanism for the gauze screen, a pull beam connected to the free end of the gauze screen, guides for guiding the pull beam and the side edges of the gauze screen. Furthermore spring hooks are used which cooperate with cams present on the ends of the pull beam. The spring hooks are mounted in the ends of the guides remote from the roll-up mechanism on a base which fits in the end of a guide. The spring hooks extend substantially in a longitudinal direction of the guides. The spring force of the hooks can be adjusted by an adjusting screw mounted in the base. The adjusting screw extends substantially perpendicularly to the hook and is accessible via an opening formed in a side wall of the guide.

Abstract: A roller screen comprises a screen, a roller mechanism for the screen, a pull-beam connected to an end edge of the screen and two side guides for guiding the side edges of the screen. The screen extends into each side guide through a longitudinal slot. A guiding rod for the corresponding side edge of the screen is provided in each side guide. Each guiding rod is coupled with a restricted freedom of movement with a mounting element fixed in the end of the side guide opposite to the roller mechanism.