By Doris RufOn Dec 04, 2017 Ideas
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 term window blinds can also be used to describe window coverings generically—in this context window blinds include almost every type of window covering, i.e. shutters, roller blinds, cellular shades (also called honeycomb shades), wood blinds, roman blinds and of course, standard vertical and horizontal blinds. In the United Kingdom, awnings are sometimes called blinds or shades.
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.
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