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US Patent: 1,578,331
Thrashing Machine Cylinder Wrench
Reuben D. Litwiller - Seward, NE

USPTO Classifications:
81/54, 81/57.3, 81/DIG8

Tool Categories:
wrenches : cylinder tooth wrenches


Reuben Litwiller - Seward, NE
Port Huron Machinery & Supply Co. - Lincoln, NE


Patent Dates:
Applied: Sep. 30, 1924
Granted: Mar. 30, 1926

Patent Pictures: [ 1 | 2 ]
Reuben D. Litwiller Pat. Mar. 30, 1926
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Commonly known as the HANDY WRENCH, this cylinder tooth wrench uses a chain drive to turn the offset wrench socket. It was sold with a range of square and hex "chucks" to fit the varieties of threshing machine and combine cylinder teeth in use in the 1920s and 1930s. The sales literature noted, "The motion is continuous .. no jigging back and forth as with a ratchet ... "

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