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The model archive
Samson
Explore 7 farm tractor models. Follow a model into its engine specifications, transmissions, dimensions, historical photographs, and available test records.
About Samson
Samson’s California tractor business became part of General Motors in 1919 and moved to Janesville, Wisconsin. GM ended the line and converted the factory to Chevrolet production in 1922.
- Beginning
- Original launch unverified; GM purchase in 1919
- Founder / origin
- Original founders unverified; later owned by General Motors
- Known for
- Sieve Grip and later agricultural tractors
- Sale / later history
- Purchased by GM in 1919; tractor line ended by 1922
History and legacy
The original low-profile three-wheel concept was replaced by a more competitive design. Investment in a cultivator and difficult competition hurt the venture. The plant’s later automobile role continued after Samson tractors ended.
Sources & further reading
History reviewed 2026-10-20.
Showing 7 of 7 models
S25
1916–1918
31 hp
Engine estimate from belt power
2WD Only
Drive
10-25
1914–1917
27 hp
Engine estimate from belt power
Unknown
Drive
12-25
1917–1918
27 hp
Engine estimate from belt power
Unknown
Drive
M
1918–1922
21 hp
Engine estimate from belt power
2WD Only
Drive
6-12
1912–1917
13 hp
Engine estimate from belt power
Unknown
Drive
A
Production years not listed
Power not listed
No index power figure
Unknown
Drive
D
Production years not listed
Power not listed
No index power figure
Unknown
Drive
Index power values can include estimates derived from belt or PTO power. They are identified on each model card and are not interchangeable with a measured engine rating. Model years and missing values follow the source index.