Cut batts to length by setting the top of the batt into the space and cutting against the bottom plate with a sharp utility knife. Leave an extra 1/2 in. of length for a tighter fit. We're using unfaced batts that are sized to friction-fit into standard stud spaces (either 16-in. or 24-in. on-center studs).
History of Windmills. The Persians seem to have been the first to develop windmills (between 500 and 900 A.D.). Sails had long been used to move ships at sea, but the Persians converted the wind for use in grinding grain.
For 50 years, George Devol's invention has been speeding up production lines at manufacturing plants around the world. Last week, at his home in Wilton, Connecticut, George Devol, the inventor of the first industrial robotic arm passed away. Devol's invention has reshaped production lines around the world. Famously first embraced by the Japanese, robotic arms are now hard at work in the production of everything from cars to pancakes. Devol received his patent for Programmed Article Transfer in 1961.