Not sure I am able say for sure about the concept your asking about. But the early self propelled New Holland swathers (model 905 and 907 and maybe others) used a planetary gear box on each drive wheel. Each wheel had a stick, pushed forward it engaged a clutch pack for the planetary gears for forward motion and locked over center. Pulling the sticks back passed neutral it engaged a brake band and reversed you. I was told it had a lot of similarity to a Ford model T transmission in how the reverse worked.
Ah yes, thanks for responding Ray. Now that you mention it, I seem to recall something about the Model T gearbox being planetary and no hydraulics
I think that's also how Lenco car transmissions work. Not sure if the actuation is a band, but seems to be manual.
Paul.
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