Complex sentence: The four alternating current generators, newly invented by Elihu Thomson, weighed 40 tons and were, 750-kilowatt alternating current generators made in the newly incorporated GE plant in Schenectady, New York.
Split into simpler sentences: The four alternating current generators, newly invented by Elihu Thomson, weighed 40 tons each and were. The 750-kilowatt alternating current generators were made in the newly incorporated GE plant in Schenectady, New York.