The Union Switch and Signal Company, Manufacturers of Railroad Signaling Appliances of all Descriptions

George Westinghouse expanded his railroad equipment business from air brakes and other railroad car parts into railroad signaling. This catalog from his new company, Union Switch and Signal, shows all of the railroad signal and track switching apparatus manufactured by the firm. The company’s signal and communication systems allowed for safer operation of trains at a greater frequency. The firm would continue to expand its offerings as railroad technology improved over the ensuing years.