The Samson Iron Works of Stockton, California were responsible for developing the "Sieve Grip" tractor, a three-wheeled machine with a special open-rim wheel design that was intended to increase traction. Several models were produced from about 1914, including a 6-12 hp single-cylinder tractor and a larger 10-25 hp model. At around this time, the General Motors Corporation (G.M.C.) was looking to move into tractor production as part of its running battle with the Ford Motor Co. General Motors decided to buy the Samson Iron Works, and continued to build Sieve Grip tractors with the G.M.C. name attached. However, the desire to compete on equal terms with the Fordson F led to the introduction of a brand new model, the Samson M, in 1918. Although slightly more expensive than the Fordson, the Samson M offered a more powerful engine and other improvements, but unfortunately General Motors could not match Ford's price cuts. The last Samsons were produced in 1923, when General Motors brief flirtation with tractor building came to an end.

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