DE1866000U - BLACK-OUT ROLLER. - Google Patents

Description

To counter X-ray rooms, laboratories, father's rooms, lecture halls, etc. To darken penetrating daylight, the windows are equipped with roll-up blackout blinds, conventional ones Construction has the following features:

A roller blind provided with a cord or belt roll is placed in a light-tight box above the window appropriate. The light-tight roller blind fabric that winds up on this shaft runs at the side in approx. 7 - 8 cm deep Ü-guide rails and receives a closing rail at the lower end, that of the roller blind gives the necessary stability, and the weight necessary for rolling.

The lower light-tight closure is made with protruding window sills by means of a foam or rubber loop, which is attached to the lower rail, which sits on the window sill in a sealing manner.

In the case of flush window sills, a lower, transverse U-rail is attached into the the roller blind-Sehlußschiene sits in it. With this construction, the roll-up curtain fabric must have an inner stability so that it is not caused by suction, draft, or light mechanical contact is pressed out of the guide rails, causing light transmission, as well as malfunctions and damage would result in the length of fabric. For this reason, fabrics made from wooden wire mesh have hitherto been preferred used, which are backed with a light-proof film. This wooden wire mesh

LANK CONNECTION: DEUTSCHE BANK A.G., H A H "i u8 G- POST CHECK ACCOUNT: HAM = U = G NS

Claims (2)

Sheet - 2 - of the description of a new type of darkening system are very expensive and, when rolled up, result in a much larger roll diameter than normal roller blind fabrics. The novelty of the invention is that it allows the use of all conventional normal, light-tight roller blind fabrics without the risk of being pushed out of the guides. This is achieved in that the fabric web 3 is provided with hollow seams (eyelets) on the sides, and the lower rail (drop rail) attached to it is designed in the same way. The C-shaped guide rails 1, which can be made much smaller than conventional U-guides, contain a rod 2 over the entire length, which is attached to the lower end and whose diameter is partially or over the entire length greater than the opening the guide rail. When the roller blind curtain is lowered, its hollow seams inevitably wrap around the rods 2. In the event of drafts or mechanical stress, the fabric curtain cannot emerge from the guide. When the curtain is rolled up, the fabric leaves the upper end of the guide rails, which are routed in a conventional manner to the lower edge of the roller box (light-tight cladding of the roller blind), and winds up on the roller blind, whereby the hollow seams flatten and do not hinder the winding process. The lower rail (drop rail) is designed so that it pushes under the bottom of the box and thus stops the rolling process, whereby it remains in the guide rails, so that the rods 2 are inevitably threaded into the fabric web loops when they are unrolled again. Protected rights claimed 1. Darkening system, characterized in that all commercially available, normal light-tight blind fabrics Can be used by receiving lateral hollow seams (loops). 2. Blackout system, characterized in that C-shaped guide rails are used,
which contain in their entire length a rod which is attached to the lower end and its
Partial or full length of diameter - 3 - Sheet «3 - the description of a new type of blackout system is larger than the opening of the guide rails. 3 «blackout system characterized in that the attached to the lower end of the fabric Weighting rail (drop rail) has loops on both sides that extend over the in the Slide the bars in the guide rails. ^ ₀ darkening system characterized in that the bars located in the guide rails thread into the hollow seams of the same when the fabric is lowered.