Windows have been around for many years. Homes going back as far as 4000 years ago had spaces in the walls where occupants could see to the outside, as well as to get fresh air. If you doubt this, imagine the alternative, which is a stone structure with no ventilation. Occupants would also be vulnerable to attack, and perhaps even the theft of their belongings on the outside. However, at that time, people tended to wake with the sun. The agrarian economy left most to be farmers, which meant the need to be working before the heat of the day. As the economies of the world shifted, people began to seek out privacy and wanted to be able to sleep later. This modesty and need to wake up a little later led to the need to cover windows.
When earlier homeowners began to have actual windows, the first types of window coverings were fabric cloths nailed up on the tops and retracted to the sides. Later technological developments allowed the easier retraction of the fabric to the top of the windows, and thus led to the invention of the roller shade. Early roller shades simply lifted the fabrics up and did not use any mechanism to lift or lower the shades.
Roller shades, thus,...
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