Self - regulating windmill sails were invented and patented by him in 1807 , at which period he settled at Horning , Norfolk , in business as a millwright .
Cubitt became known for the accuracy and finish of his patterns for the iron castings of machines .
Self - regulating windmill sails were invented and patented by Cubitt in 1807 , at which period Cubitt settled at Horning , Norfolk , in business as a millwright .
Cubitt became known for the accuracy and finish of his patterns for the iron castings of machines .