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Window screens designed specifically to prevent insect entry were not patented in the United States, although by 1900 several patents were awarded for particular innovations related to window screen design. By the 1950s, parasitic diseases were largely eradicated in the United States in part due to the widespread use of window screens. [3 ...
The company was founded in 1925 when Peter Kuyper and his wife Lucille invested $5,000 to buy the Rolscreen Company, a small business that had created the Rolscreen insect window screen that rolls out of sight when not in use. [2] In 1926 they moved the company to Pella, Iowa, where the Kuyper family had a lumber business.
Other common names for it include "clear sight", "spin window", "Kent Screen" and "rotating windshield wiper". Clear view screens were patented in 1917 by Samuel Augustine de Normanville and Leslie Harcourt Kent as a stand-alone pillar-mounted screen, [ 1 ] with later patents for telescope and optics covers, followed by the more familiar ships ...
A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and may also allow the passage of sound and sometimes air.Modern windows are usually glazed or covered in some other transparent or translucent material, a sash set in a frame [1] in the opening; the sash and frame are also referred to as a window. [2]
Sports or racing cars would sometimes have aero screens, which were small semi-circular or rectangular windshields. These were often mounted in pairs behind a foldable flat windshield. [ 6 ] Aero screens are usually less than 20 cm (8 inches) in height.
On older houses, storm windows were installed in autumn when the window screens were removed; later homes had the pieces combined in one unit. Similarly, storm doors (also called "screen doors") allow similar energy savings for the necessarily less efficient primary doors – the screen allows for summer ventilation.
In the summer, a window screen would be installed on the exterior over the double-hung window to keep out animals and insects. In the winter, the screen was removed and replaced with a storm window, which created a two-layer separation between the interior and exterior spaces, increasing window insulation in cold winter months. To permit ...
The earliest CRTs were monochrome and were used primarily in oscilloscopes and black and white televisions. The first commercial colour CRT was produced in 1954. CRTs were the single most popular display technology used in television sets and computer monitors for over half a century; it was not until the 2000s that LCDs began to gradually ...