Roller blinds

Roller blind having two sections a first of which comprises an adjustable length armor having a series of lamellae, may be moved in guiding rails (5) at the side over a deployment length and which can be rolled on or off a take-up roll (2) disposed in a roller-blind housing (1), the free end of a material or coarse-screen (7) that in turn is accommodated in a blind housing (8), being fastened to the last lamella (4') at the free end of the armor (3) and the blind housing (8) being disposed below the last lamella (4') of the armor (3), wherein the blind housing (8) can be moved over the deployment length (L) of the armor (3), can be locked in position at any height within the deployment length (L) by means of a locking mechanism (10, 11) and, when not in the locked position, is pressed by the tension of a spring in set contact with the last lamella (4') of the armor (3) said armor being adapted for movement in lateral, spaced apart, guide rails over a deployment length, a first roller-blind housing spanning one end of said lateral guide rails, a first take-up roll disposed in said housing in a position enabling rolling of said lamellae on or off said first roll for shortening or increasing the length of said armor, a second section of said roller blind comprising a continuous blind section normally rolled up under spring tension on a second roll accommodated in a second housing and having a free end fastened to a free end of that lamella most distant from said first housing, said second housing, by virtue of rolling up of said second section on said second roll under spring tension being disposed below said most distant lamella of said armor for movement with said armor over its deployment length, and means for locking said second housing against movement with said armor enabling rolling of said second section off said second roll during rolling of said lamellae on said first roll.