'Ferguson Black' tractor, 1935.
© Science Museum / Science & Society Picture Library
Harry Ferguson's prototype tractor with 3-point linkage, weight transference and hydraulic control of implements, including automatic depth control, completed in 1935 in Belfast, and known as the 'Ferguson Black'. More than any other single development, this invention revolutionised the use of the farm tarctor, and nearly all subsequent designs have incorporated its design principles. The plough shown with it is believed to be one of the first two furrow ploughs made after World War II to complement the launch of the TE20 and all its variants. It was the TE20, descendant of the 'Black Tractor', which became a common sight on farms all over Britain in the 1940s and early 1950s, and the implements made for it, represented the full flowering of the Ferguson System.