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In his corner office at Corning Inc.’s towering steel-and-glass headquarters in Corning, N.Y., CEO Wendell Weeks keeps a small, yellowed piece of paper in a dark wood frame behind his desk ...
A very important advance in glass manufacture was the technique of adding lead oxide to the molten glass; this improved the appearance of the glass and made it easier to melt using sea-coal as a furnace fuel. This technique also increased the "working period" of the glass, making it easier to manipulate.
A stained glass window is a window composed of pieces of colored glass, transparent, translucent or opaque, frequently portraying persons or scenes. Typically the glass in these windows is separated by lead glazing bars. Stained glass windows were popular in Victorian houses and some Wrightian houses, and are especially common in churches. [24]
Until the 20th century, window glass production involved blowing a cylinder and flattening it. [9] Two major methods to make window glass, the crown method and the cylinder method, were used until the process was changed much later in the 1920s. [10] All glass products must then be cooled gradually , or else they could easily break. [11]
German workers were used, and production of window glass is believed to have begun in 1786. [108] De Neufville was a poor financial manager, and the glass works was abandoned by 1790. [109] James Caldwell and associates renovated the abandoned factory in 1792 and began producing window glass. He called his factory the Albany Glass House. [110]
A sash window or hung sash window is made of one or more movable panels, or "sashes". [ A ] The individual sashes are traditionally paned windows , but can now contain an individual sheet (or sheets, in the case of double glazing ) of glass.
Belcher mosaic windows were manufactured in the United States by the Belcher Mosaic Glass Company between 1884 and 1897. Identifiable by their unique, continuous lead matrix and use of small, glass tesserae, Belcher windows are an example of the innovation occurring in decorative glass during the nineteenth century.
Window glass was produced throughout the period on a small scale, in the form of crown glass and broad glass. [3] [11] This was predominantly made from green glass throughout the 16th century. [3] [6] While rare in the early 16th century, glass windows soon became a symbol of increasing wealth and status. Larger sheets were in demand for ...