History
In May 1917, one month after the US had declared war on Germany, a Federal task force known as the Aircraft Production Board summoned top engine designers Jesse G. Vincent (of the Packard Motor Car Company of Detroit) and E.J. Hall (of the Hall-Scott Motor Co. of Berkeley, California,) to Washington D.C. They were given the task of designing as rapidly as possible an aircraft engine that would rival if not surpass those of Great Britain, France, and Germany. The Board specified that the engine would have a high power-to-weight ratio and be adaptable to mass production. The Board brought Vincent and Hall together on 29 May 1917 at the Willard Hotel in Washington, where the two were asked to stay until they produced a set of basic drawings. After just five days, Vincent and Hall left the Willard with a completed design for the new engine.
In July 1917, an eight-cylinder prototype assembled by Packard's Detroit plant arrived in Washington for testing, and in August, the 12-cylinder version was tested and approved. That fall, the War Department placed an order for 22,500 Liberty engines, dividing the contract between the automobile and engine manufacturers Buick, Ford, Cadillac, Lincoln, Marmon, and Packard. Hall-Scott in California was considered too small to receive a production order. Manufacturing by multiple different factories was facilitated by its modular design. Cadillac was asked to produce Liberty engines but William Durant was a pacifist who did not want General Motors facilities to be used for producing war material. This led to Henry Leland leaving Cadillac to form the Lincoln company to make Liberty engines. However, Durant later changed his mind and both Cadillac and Buick produced the engines.
Ford was asked to supply cylinders for the new engine, and rapidly developed an improved technique for cutting and pressing steel which resulted in cylinder production rising from 151 per day to over 2,000, Ford eventually manufacturing all 433,826 cylinders produced, and 3,950 complete engines. Lincoln constructed a new plant in record time, devoted entirely to Liberty engine production, and assembled 2,000 engines in 12 months. By the time of the Armistice with Germany, the various companies had produced 13,574 Liberty engines, attaining a production rate of 150 engines per day. Production continued after the war, for a total of 20,478 engines built between July 4, 1917 and 1919.
Read more about this topic: Lincoln Liberty Engine
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