The Westinghouse Brake & Signal Company Ltd was created in 1935 when the "Westinghouse Brake & Saxby Signal Company" Ltd, dropped the 'Saxby' from their title. For most of the 20th century, it manufactured railway air braking, signalling, mining & colliery equipment, industrial automation and power rectifier equipment in the engineering works in Chippenham, Wiltshire, England and Melbourne, Australia. There were associate companies in South Africa (Saxby & Farmer Private) and India. The company's main factory of around 35 acres was located immediately north-east of Chippenham railway station on the Great Western Railway.