During the war, Colt's was still prevented by the American laws from infringing Rollin White's patent. Nevertheless, the war made a huge fortune for the company, allowing Sam Colt to become America's first manufacturing tycoon, though he did not live to see the end of the war; he died of rheumatic fever on January 10, 1862. His close friend and firearms engineer, Elisha K. Root, took over as Colt's company president. On February 4, 1864 a fire destroyed most of the factory, including arms, machinery, plans, and factory records. On September 1, 1865, Root died, leaving the company in the hands of Samuel Colt's brother-in-law, Richard Jarvis. The company's Vice-president was William B. Franklin, who had recently left the Army at the end of the Civil War. With the Civil War over and having no new military contracts, Colt's Manufacturing was forced to lay off over 800 employees.