Insley Manufacturing Co.The Insley Manufacturing Company produced heavy construction equipment, and was based in Indianapolis, Indiana.HistoryThe company was founded in 1907 by William Henry Insley. The company holds many patents for cable-operated digging equipment, such as Dragline excavators and power shovels, such as the Insley model k12. Insley lost its independence in 1975 when purchased by United Dominion Industries; the name is currently held by Badger Equipment Co.