Westinghouse Air Brake Company

Westinghouse Air Brake Company. Founded by inventor and industrialist George Westinghouse in 1869, the company revolutionized rail transport safety with the first practical railway air brake. This innovation dramatically reduced train accidents and enabled the operation of longer, heavier, and faster freight and passenger trains, fundamentally shaping the development of the American railroad industry. The company, often abbreviated as WABCO, later expanded into railway signalling and global manufacturing, becoming a cornerstone of industrialization in the 19th century.

History

The company was incorporated on September 28, 1869, in Pittsburgh, following George Westinghouse's patenting of the "straight air brake" system. The invention addressed the deadly inadequacy of existing brake systems, which required individual brakemen to manually set brakes on each railroad car. A pivotal demonstration for the Pennsylvania Railroad in 1869 proved the system's effectiveness, leading to rapid adoption. By 1872, Westinghouse had improved the design with the safer "automatic air brake," which would apply if the train pipe ruptured. The company's growth was fueled by the explosive expansion of railroad networks across North America and partnerships with major lines like the New York Central Railroad and the Baltimore and Ohio Railroad. In 1889, Westinghouse established the Union Switch & Signal company, merging it into the air brake business to form a comprehensive safety systems provider.

Products and technology

The company's foundational product was the Westinghouse Automatic Air Brake, which used compressed air stored in a reservoir on each car, controlled by a brake pipe running the length of the train. Key innovations included the triple valve, which automatically equalized pressure and applied the brakes. This technology was later enhanced for passenger trains with faster-acting systems like the "Quick Service" feature. Beyond brakes, the company became a leader in railway signalling under the Union Switch & Signal brand, producing interlocking plants, track circuits, and semaphore signals. Its product line expanded to include switches, couplers, and later, components for diesel locomotives and urban rail transit systems such as light rail and metro networks.

Corporate affairs

Headquartered in Pittsburgh, the company's manufacturing operations were centered in Wilmerding, Pennsylvania, where it constructed a massive plant and an entire planned company town for its workers. It established a dominant market position through aggressive patent protection and licensing. The company was a major employer and influenced labor relations in the region, with its facilities later becoming a focal point for the Congress of Industrial Organizations. In the 20th century, it diversified through acquisitions and joint ventures, forming WABCO Vehicle Control Systems for commercial vehicles. The rail-focused divisions underwent several corporate transformations, including ownership under American Standard Companies and later being part of Wabtec Corporation, formed by its merger with Motivair Corporation.

Impact and legacy

The company's air brake is considered one of the most important safety inventions in railroad history, directly enabling the modernization of rail transport by making high-speed, long-distance travel commercially viable and safe. Its adoption was mandated in the United States by the Railroad Safety Appliance Act of 1893, a landmark piece of federal regulation. The technology became the global standard, used by railways worldwide including the Trans-Siberian Railway and across Europe. The company's work established Pittsburgh as a center of industrial innovation and its training programs fostered generations of mechanical engineers. The WABCO name remains a recognized brand in railway equipment and commercial vehicle controls.

Notable projects and applications

The company's systems were integral to iconic passenger trains such as the 20th Century Limited and the Super Chief. Its brakes and signals were installed on major mountain railways, including those crossing the Alps and the Rocky Mountains. The New York City Subway, one of the world's largest rapid transit systems, extensively used its braking and signalling equipment. During World War II, the company's factories produced critical components for the war effort, including parts for M4 Sherman tanks and aircraft. In the modern era, its successor companies have provided control systems for high-speed rail projects like the Acela Express and metro systems in cities such as London, Singapore, and Hong Kong.

Category:Rail transport equipment manufacturers of the United States Category:Companies based in Pittsburgh Category:1869 establishments in Pennsylvania Category:George Westinghouse