1950s double-engined Fordson tractor - videos, patent, and photo
A Doe Triple-D double Fordson tractor. This was originally a 1950s creation by an English farmer and ingenious homemade tool maker named George Pryor. Pryor purchased two Fordson tractors and linked them together, thus creating the world's most powerful tractor, and no doubt earning eternal bragging rights among his farmer buddies.
Local Fordson dealers Ernest Doe & Son later replicated the build, calling it a Doe Dual Drive, AKA Doe Triple-D.
About 300 Triple-Ds were built. In the 1960s, tractor companies began developing single-engined tractors with sufficient horsepower.
https://s3-us-west-1.amazonaws.com/h...le_tractor.jpg
2:16 video of a Doe in action:
https://www.youtube.com/watch?v=URavZUgDJaM
3:42 video of a Doe emerging from barn hibernation:
https://www.youtube.com/watch?v=4RN0YKxr9JU
And I believe I found the US patent for it, #3061029 A, awarded in October 1962. Titled "Coupling mechanism for tractors", it's assigned to Englishman George Pryor Herbert, with drawings labeled "Herbert George Pryor", whom I believe is our same George Pryor.
https://s3-us-west-1.amazonaws.com/h...sm_patent1.jpg
https://s3-us-west-1.amazonaws.com/h...sm_patent2.jpg
https://s3-us-west-1.amazonaws.com/h...sm_patent3.jpg
More:
https://en.wikipedia.org/wiki/Doe_Triple-D
Doe Triple D 1962 - TractorShed.com
Patent US3061029 - Coupling mechanism for tractors - Google Patents
Previously:
https://www.homemadetools.net/forum/...4194#post79504
https://www.homemadetools.net/forum/...979#post100397
https://www.homemadetools.net/forum/...3718#post99844
https://www.homemadetools.net/forum/...4233#post79570
https://www.homemadetools.net/forum/...2255#post76030
https://www.homemadetools.net/forum/...2353#post76200
https://www.homemadetools.net/forum/...6993#post84808
https://www.homemadetools.net/forum/...3037#post97899
https://www.homemadetools.net/forum/...3489#post99230
https://www.homemadetools.net/forum/...2016#post75586
