Complex sentence: David Look bought this property in 1809 and converted the mill from grain to fabric by installing a carding machine to produce woolen yarn and looms for weaving that wool into fabrics called kersey and Satinet.
Split into simpler sentences: David Look bought the property in 1809 and converted the mill from grain to textile. He installed a carding machine to produce woolen yarn and looms for weaving that wool into fabrics called kersey and Satinet.