By Gerda MenzelOn Nov 10, 2017 Ideas
In Britain, awnings and window shutters are often categorized under blinds, which are so named because they limit observation and thus blind the observer to the view. The main types are slat blinds which can be opened in two ways, and solid blinds, which can only be raised or lowered, and are sometimes called shades.
Vertical blinds use a generally wider slat and one can pull a cord to stack the slats together, to one side, or to separate them in the centre and stack them on each end. The slats can be rotated via a rotating shaft in the upper head rail housing, which runs through independent geared carriers that convert the twisting of a tilt rail to a rotation of each individual slat in synchrony. The original vertical blinds were invented in Kansas City, Missouri by Edward Bopp and Fredrick Bopp, who held the original patent. The company name at the time was Sun Vertical. In the 1960s, the patent and company were sold.
The two overall types of window blinds are ready-made blinds and made to measure. Made-to-measure blinds are made to fit a given or measured window size. Ready-made blinds are manufactured in set sizes that can be cut down to fit any window. Window blinds can be classified broadly into six different categories: roller blinds (which do not have slats but consist of a single piece of material), Roman blinds, pleated blinds, Venetian blinds, Shoji Japanese blinds and vertical blinds.
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