Kaevandatud maa: Esimene roomiktraktor

Esimene roomiktraktor

1834. aastal tegid John Heathcoat (Inglise parlamendi liige) ja insener Joiah Parkes hiiglasliku auruajamiga roomikutega masina millega tõmmati atra. See traktor kaalus 30 tonni, oli 8,2 m lai, 10,3 m pikk, 2,4 m läbimõõduga roomikuratastega. Masinat katsetati Šotimaa rabas kuid see uppus sinna juba teisel päeval.

Farm

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