Glass Shutters?

It is amazing what can be made from glass. The glass shutters pictured here are in the Corning Museum of Glass in Corning, NY. Elias Hungerford received the patent for his glass window blinds in 1866. They were not a commercial success and according to the museum, only a few sets survive today. You have to see these in person, though to appreciate the work and the details. I can only imagine how heavy they were. I would have loved to see them hung in a window with the sunlight shining through!