A Shaker-Sister who was an early American tool inventor in the mid-1800's. While working in the spinning house at the Harvard Shaker community in Massachusetts, she envisioned her invention while watching men in sawmills slaving with the incredibly difficult two-man pit saw used to rip logs into lumber. She combined elements of her spinning wheel with a rotating circular blade ringed with teeth and thus was born the first American circular saw blade in 1813. Along with Eli Whitney, she is also credited with inventing cut nails. As a Shaker she never patented any of her inventions. (Tile dedicated by Naomi Friedman.)