Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,162 pages of information and 233,682 images on early companies, their products and the people who designed and built them.
of London, Chippenham and Kingswood (Bristol).
Westinghouse Brake and Saxby Signal Co, of 82 York Road, London, N1. Telephone: North 2415 (6 lines). Cables: "Westinghouse, London". (1929)
Westinghouse Brake and Signal Co, 82 York Road, King's Cross, London, N1. Telephone: Terminus 6432. Telegraphic Address: "Westinghouse, Nordo, London". (1937)
Ditto 1937 Address and Telephone. Cables: "Westinghouse, London". (1947)
1874 Tests on the Midland Railway using a specially equipped train
1876 North British Railway organised a series of trials between Westinghouse's automatic air-brake and Smith's vacuum brake supplied by the Vacuum Co which demonstrated the advantages of the air-brake.
By 1880, 37,000 sets of Westinghouse apparatus had been supplied to railways around the world.
1894 Antwerp Exhibition. Train braking systems. (Westinghouse Brake Co). 
1894 Antwerp Exhibition. Awarded Grand Prix Diploma for Railway Plant. (Westinghouse Brake Co). .
1899 The Westinghouse Brake Co in conjunction with Messrs McKenzie and Holland was the first to introduce power signalling into Great Britain with the installation at Bishopsgate Street station on the Great Eastern Railway.
1907 Separate company formed to carry on the power signalling business: McKenzie, Holland and Westinghouse Power Signal Co which equipped the whole of the underground railways of London with power operated automatic signalling.
By 1910, 3 million sets of Westinghouse brake apparatus had been supplied to railways around the world.
1913-1917 For a list of the models and prices of Marine Motors see the 1917 Red Book under the Westinghouse-Cross name.
1920 Recognising the interdependence of effective braking and signalling in train safety, Westinghouse Brake Company acquired certain assets of the Consolidated Signal Co. By these means, Westinghouse Brake secured controlling interests in the signal manufacturing concerns of:
The name of the company was changed to Westinghouse Brake and Saxby Signal Co.
1925 Introduced metal rectifiers, not long after the discovery that Copper Oxide could act as a rectifying medium.
1929 British Industries Fair Adverts for Low Tension Battery Eliminator and Metal Rectifiers. Manufacturers of All-metal Rectifiers for use in Radio apparatus and Battery Chargers, and for other purposes, where direct current is required from alternating current supply. (Wireless section - Stand No. MM.39). [of York Road, London] 
1932 The London works of Westinghouse Brake Co were moved to Chippenham
1935 The name was changed to the Westinghouse Brake and Signal Co.
1937 Listed Exhibitor - British Industries Fair. Metal Rectifier Equipment for all purposes requiring direct current conversion from alternating supplies, including Rectifiers for Electro Plating, Battery Charging, Cinema Arc Operation. (Stand Nos. Cb.614 and Cb.616) 
1947 British Industries Fair Advert for "Rectifiers for Radio". Also units for use in measuring instruments and battery chargers. Manufacturers of Metal Rectifiers of HT and LT supplies to radio receivers and transmitters; detection and AVC telecommunication: and for use with measuring instruments. Commercial Battery Chargers and Trickle Chargers. (Music and Radio Section - Olympia, Ground Floor, Stand No. C.1531) [of York Way, King's Cross, London, N1]. 
1956 Acquired Douglas (Kingswood) Ltd
1959 Main divisions were:
as well as several foreign companies. Signals and Colliery Division had introduced the first "Westronic" centralised traffic control installation; also first use of Westinghouse electro-pneumatic retarted manufactured in the UK.
1961 Manufacturers of power and mechanical signalling equipment, compressed air and vacuum brakes, rectifiers and rectification apparatus, power operated tub handling plants for the mining industry, brakes for road transport, and pneumatic control equipment. 7,000 employees. 
1962 Short-lived venture into making automatic transmissions - see Westinghouse Hobbs
1963 Motor Show exhibitor. Mobile car lift. 
1966 Demand for brakes for commercial vehicles had increased substantially
1970 Semiconductors business was expanding; continued demand for railway signals, recitifiers and commercial vehicle brakes