Sash windows were originally designed by the Renaissance man Robert Hooke in the late nineteenth century. He was an active scientist, architect and inventor during the later half of the Victorian period and early Edwardian era. The sash window invention relied on the clever use of a counterbalance system. Clever use of the right counter weight greatly reduces the actual weight of the sash you are using. This system allows for the movement of a very large weight with the exertion of minimum force, through the clever use of counter weights. These panes of glass that are glided one across the other are all actually called sashes. However, in colloquial English this word is now used to describe the style of window designed and created by Robert Hooke. The two sashes/panes of glass are separated by a narrow bar, called a muntin bar. Sash windows incorporate this muntin strip, which is made from either wood or metal. This part of the sash window separates and also holds the two panes (sashes) of glass. You can find these bars in use in doors, window and even furniture. Their use is typical in western styles of architecture. They can also be used to further subdivide the sash window into lights, or lites. Before developments in sheet glass production, this method was the only way of providing a large surface area of glass.
Georgian architecture is a term used to describe buildings designed and built during the 1720s and 1840s. The period is eponymous with the Georges that ruled England to some degree or other during this time. There were a succession of George’s starting not surprisingly at I and ending at IV. The period known as the House of Hanover extends to the death of Queen Victoria in 1901. As all were descendants of that family. During this and the following architectural period architects employed the feature of sash windows. Gradually as materials and building technologies developed the windows of their designs got proportionally larger. During the later half of the eighteenth century they had the choice of non lighted sashes to add to the tool box of features. The sliding, light weight proper sash window design was designed during the same period. This further expanded the possibilities of proportion of glass to building structure, as the large sashes could now be moved one against the other. This revolutionary, mechanism gave architects the ability produce beautifully proportioned windows at frequent intervals in their exterior walls. The sash mechanism allowed for ventilation of the spacious, now highly lit rooms. Also, very importantly the ability to move one sash on top of the other for the first time allowed the easy cleaning of a large window.
The development of the sash mechanism revolutionized architecture in the late nineteenth century. Revolutionary changes in all the art forms, including architecture are a feature of the late eighteenth and nineteenth century. These changes are reflected in the fashions, fine arts, and furniture design. Now the architect had beautifully designed furniture and fittings to add to his radiant structure
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