Friction-Drive
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 ...
