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S. Morgan Smith was an American manufacturer of turbines, founded by Stephen Morgan Smith in York, Pennsylvania. It was founded in 1877 shortly after Smith received a patent for an improved turbine. It became the country's largest manufacturer of hydroelectric turbines. The company's ability to manufacture large equipment was utilized during World War I to manufacture machines used to make large artillery guns. The company was purchased by Allis Chalmers and later spun-off to Voith Hydro.

History
Smith held a washing machine patent which he exchanged in 1874 for part-ownership of the York Manufacturing Company which was founded to produce the machines. His partner, Oliver J. Bollinger, signed over his rights to a 1870 turbine water wheel. Bollinger left the company in 1875 to produced an improved turbine at his own company. Smith took over improvements on the 1870 turbine, and received his first turbine on December 26, 1876, 17 days after the application was filed with the US Patent Office, for an improved turbine waterwheel. Smith personally retained the patent rights to the "Success" turbine and contracted with York to manufacture it.

Smith founded S. Morgan Smith in 1877 when it made its first sale of the turbine to a mill in Paradise Township, York County, Pennsylvania. Smith used York Manufacturing and other machine shops to manufacture his products through the 1880s. The company was incorporated in 1886.

The company built its first factory in 1890, then employing 20 workers. The company expanded to 166 employees by 1899 and was ranked as the 10th largest factory in the county.

By 1908, the company was manufacturing the McCormick turbine, the New Success turbine, and its newest model, the Smith Turbine.

The company's turbines were operating across the US and in many foreign countries producing waterpower to operate mills that spun cotton, sawed lumber, ground flour. Hydroelectric turbines powered melting furnaces at steel mills, pumped water for irrigation, and generated electricity for the lighting and transportation. By 1920, the York plant was the largest manufacturer of turbines and employed 750.

World War I
The York plant turned to the war effort, beginning with the manufacture in 1915 of two 50 inch {{cvt}500,000|lb)) gun boring lathes that Bethlehem Steel ordered. They also produced a 480,000 lb slicing lathe and 12 30 inch boring mills. Later, Bethlehem placed orders for even larger machines, including the nine machines necessary for Bethlehem to product guns with up to a 20 inch bore. Another 14 large gun lathes were ordered, making the plants output 90% war related production. The designs were further expanded to fill an order by US Steel for still larger machines for large gun production at a new gun plant at Neville Island. These machines would have weighted over 1,500,000 lb but were not completed before the end of the war.

Wind
By the 1920s and 30s, the industry was suffering from a lack of new hydroelectric projects as most dam sites had been developed. The company president in 1939, Beauchamp Smith, decided to turn to wind turbines for new opportunities. Wind turbines could power electric generators, as well as pump water for pumped-water storage for hydraulic generation. Smith partnered with Palmer Putnam and engineer who has been working on a wind generator since 1934. The first Smith-Putnam wind turbine was operational in August 1941. This machine was a two-bladed 1.25 MW turbine with a 53 m rotor diameter. It ran at a constant speed by adjusting the angle of the blades as the wind speed changed. The turbine was connected to a 600rpm General Electric generator. The generator, the world's largest at the time, was installed on a mountaintop near Rutland, Vermont.

The site was picked because it was within range of the customer, Central Vermont Power, the ridge was high and sharp which meteorologists believe caused accelerated wind speed, and had tree deformaties suggesting wind impact over many years.

After cracks in the blades were welded in May 1942, the turbine ran until February 1943 when the main bearing failed. Repair, much slowed by World War II delays was completed in March 1945. Three weeks later, one of the eight-ton blades broke off the turbine permanently ending its operation.

This project, which operated for over a thousand hours, demonstrated that wind power could be generated and supplied into the nation's electric grid at the MW-scale. The experiment was ended because it was not believed at the time that electricity could be generated a cost competitive with other sources.