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Heider ads touted the tractor's friction-drive, but whether it was any better than a traditional transmission is debatable. This 1920 ad's claim for '12 Years Actual Field Work' is a bit of pitchman's hype; although John and Henry Heider started work on a prototype in 1908, they didn't introduce their first tractor until 1910.When lowans John and Henry Heider launched the Heider ...

Richard Backus | Oct 1, 2003

Gas Engine Magazine

Preserving the History of Internal Combustion Engines