- George Westinghouse invented the air-brake system for trains and brought alternating current power to cities.
- Westinghouse also had an infamous rivalry with fellow inventor Thomas Edison.
- While he may no longer be a household name, George Westinghouse and his inventions have shaped the modern world.
The Westinghouse brand has been well known since the late 19th century, but the man behind the brand—George Westinghouse—is not.
He founded dozens of companies and transformed the world with his technological achievements. But, today, few besides engineering and technological-history buffs remember George Westinghouse, who was responsible for two key inventions that have touched millions of lives. Just after the Civil War, he invented the air-brake system, a quantum leap in railroad safety. Thirty years later, he was responsible for the triumph of alternating current (AC) power, making electricity viable for domestic and industrial use.
Westinghouse was born in Central Bridge, NY, in 1846. He apprenticed at his father’s company, Westinghouse Machinery Co., learning mechanical design and drawing. As a junior engineering officer on a US Navy vessel during the Civil War, Westinghouse honed his engineering skills along with a sense of discipline and service—qualities that informed his life and career.
Westinghouse’s Air-Brake System Led A Railway Revolution
Before Westinghouse invented the air-brake system, passenger and freight trains employed a brakeman to manually turn handwheels on top of each car, engaging the brakes individually. It was dangerous work and ineffective—trains could take 2 miles to come to a halt. Westinghouse’s system connected the cars with compressed air lines that activated the brakes simultaneously. The new braking system reduced braking distance from thousands of yards to hundreds, saving untold damage and hundreds of lives each year.
“This revolutionized train safety and travel,” says Emily Ruby, curator of the Heinz History Center, which maintains a large Westinghouse collection.
The success of the Westinghouse Air Brake Company (founded in 1869 and still in business) allowed Westinghouse to explore other fields. In 1885, an article in the English journal Engineering sparked his interest in AC electrical systems. This eventually brought Westinghouse into contact—and conflict—with the major inventor of that era: Thomas Edison.
The War of AC vs. DC Power Begins
In the 1880s, the electrical-power industry was in its infancy. Many devices were powered by direct current (DC), often from batteries, for light industry and office applications. Electrical lighting, based on the new Edison incandescent bulb, was gaining a foothold. High-voltage AC was in limited but impressive use, such as for powering the intense blue-white streetlights that gave New York City’s Broadway its nickname, “The Great White Way.”
But low-voltage DC could be transmitted only a few thousand yards from its source. This was viable for small towns, where a central DC power station had adequate reach, but for cities, it was unfeasible.
While Edison invested in DC systems to power stock tickers, telegraph machines, and incandescent bulbs, Westinghouse saw greater potential in the more-difficult-to-master AC. His breakthrough was recognizing the similarities between AC power and compressed-air or natural-gas transmission systems.
Westinghouse Improved on the Power of the Transformer
Natural gas used for lighting or heating is produced at high pressure, which allows transmission over long distances. At the point of use, the pressure tapers to safe levels using a reducing valve. In electrical current, voltage is analogous to pressure, and high-voltage AC power can be transmitted over long distances. At the point of use, a device called a transformer acts as a reducing valve, stepping down the voltage to safe levels for home and industrial applications.
“Most people knew that natural gas was a great source of energy, but it took Westinghouse developing the system to store, distribute, transform, and meter it that made it an industry,” Ruby says. “That work also gave him the idea that AC could be practical if it could be ‘transformed’ once it reached its destination. It is fascinating to see how all of his work connected and spurred new ideas in other industries.”
In 1885, Westinghouse bought the US rights to a transformer patented by the French-British duo Gaulard and Gibbs and immediately set about improving it. Working with the brilliant Serbian inventor Nikola Tesla, Westinghouse produced the first practical AC-power generation and distribution systems, based on Tesla’s designs, as well as a lightbulb that competed with Edison’s incandescent bulb.
The greatest achievement in AC power, however, came when Tesla developed the first practical AC electric motor. Producing no dangerous sparks and reducing the components subject to physical wear that DC motors required, AC motors were the key to industrial applications for AC power.
How Westinghouse Beat Edison at the Electricity Game
Edison, “The Wizard of Menlo Park,” considered electricity to be his bailiwick. Incensed when Westinghouse entered the fray, Edison famously exclaimed, “Tell him to stick to air brakes.”
Although Westinghouse was designing an original system, not a copy of Edison’s DC system, Edison engaged in a public-relations battle with the Westinghouse faction, denouncing high-voltage AC power as dangerous, even lethal. Edison went so far as to encourage its use in the first electric chair for executions, proposing the slanderous term “Westinghousing” for execution by AC current.
The Westinghouse-Tesla AC-power system won out in the end. Notably, the Westinghouse Electric Company also won the contract to illuminate the 1893 Chicago World’s Fair, where it designed, built, and installed a complete AC central station, powered by a 2,000-horsepower Allis-Chalmers steam engine and a dozen 1,000-horsepower engines. The generators powered over 160,000 Westinghouse-designed lamps in the fair’s pavilions, plazas, and walkways—all controlled from a central switching system overseen by a single operator.
The death knell for DC power was struck by the Niagara Falls Power Company on Nov. 16, 1896. Its ambitious project directed water from the Niagara River through a huge subterranean tunnel, spinning Westinghouse turbines and generators and providing electricity to the industries of Buffalo, NY.
George Westinghouse’s Legacy Continues to Shape the World
Financial manipulation during the Panic of 1907 by J.P. Morgan (an early Edison backer) wrested control of the Westinghouse Electric Manufacturing Company from its founder. While the air-brake company and several other concerns remained under Westinghouse’s control, it was a blow that he never seemed to recover from. His health declined, and he passed away on March 12, 1914, age 67.
In contrast to Edison, a relentless self-promoter, Westinghouse was a retiring personality who preferred to let his work take the spotlight. “The reason that George Westinghouse is not, and probably never will be, well known is that there isn’t any primary material,” says historian and author Jill Jonnes. “He did not leave any personal papers. Anyone under the age of 30 or 40 probably won’t have heard of Westinghouse. He’ll just fade away.”
Although the Westinghouse brand thrived well into the 20th century as a household name for kitchen appliances, radios, and midcentury industrial electrical products, the Westinghouse Electric Corporation was gutted in the mid-1990s, disassembled for its assets. Its industrial and technology divisions were sold off to the highest bidders, and only the media component (one of the original Big Three American radio, and later television, networks) remained.
Despite his descent into anonymity, Westinghouse remains a giant of the early years of industrial technology. As the man behind key technologies in transportation and electrical power—though not as visible to the public as Edison’s phonograph, movies, and lightbulb—Westinghouse was instrumental in shaping today’s world.
This article has been updated. It was originally published in November 2017.