How much power did the Corliss Centennial Engine produce at Philadelphia's 1876 exposition?

The Corliss Centennial Engine produced 1,400 horsepower at Philadelphia's 1876 exposition.

The enormous steam engine was the centerpiece of Machinery Hall at the United States Centennial Exposition. It was designed to power machinery and exhibits throughout the building, using line shafts with a combined length of more than a mile. President Ulysses S. Grant and Brazil’s Emperor Pedro II helped start the engine during the fair’s opening ceremonies.

The engine stood about 45 feet high and had a flywheel about 30 feet in diameter. Its two cylinders each had a 44-inch bore and a 10-foot stroke. These dimensions made it one of the most impressive engineering displays of the nineteenth century.

After the exposition, the engine was dismantled and returned to Providence, Rhode Island. It was later used at the Pullman works in Chicago before being sold for scrap in 1910. Its role illustrates how anniversary fairs combined historical symbolism with industrial spectacle.