Ramsay and Jackson was founded in the 1940's and was originally involved in threshing contracting using steam traction engines. The sales and repair side of the business soon evolved with the three Ramsay brothers mainly Neil, Billy and Robin becoming partners with their mother Isabella Jackson and step father James Jackson.
The contracting side of the business continued on until the 1970's when the last combine harvester was sold off to allow more time to be spent on the growing machinery supply and repair business. The firm is presently run by Billy and Neil Ramsay who are the sons of the original partners. At present 12 people are employed at the new purpose built premises at knowehead works, Mauchline.