John Wrathall Bull (23 June 1804 – 21 September 1886) was a settler, inventor and author in the early days of colonial South Australia.
He acted as an agent for absentee landholders in South Australia and farmed in the Mount Barker and Rapid Bay districts.
[1] Bull was known for his creation of the agricultural stripping machine which he developed but was controversially beaten to the title of the inventor by John Ridley.
[1] Bull successful petitioned parliament in 1880 for a grant of recognition of his invention and after a long inquiry, was given £250 in 1882 "for services in improving agricultural machinery".
[2] Also involved in South Australia's colonial militia, Bull was made lieutenant in command of the companies at Mitcham and Glen Osmond.