James Cuthbertson & William Clark
James Cuthbertson of Biggar was a key player in the development of forestry ploughs in Scotland. As a child, he was introduced to the experimental work on forestry ploughs undertaken by Sir Charles Ross at Balnagowan Estate.
In the 1940s, his engineering firm in Biggar turned out a series of experimental ploughs for the Research and Development team at the Forestry Commission.
By the 1950s, his firm had an international reputation for specialist ploughs, ranging from paddy field ploughs for the rice fields of South East Asia, to those tackling Canadian swamps, and even underwater sea-bed ploughs for cable tracks.
However, by the 1960s, Cuthbertson was less involved with forestry ploughs, and a new engineering star appeared on the horizon: William Clark.
William Clark is an important character in the development of forestry ploughs.
Clark established the engineering company Clark of Parkgate in Dumfriesshire in 1925. Initially a blacksmith, he expanded into agricultural engineering soon afterwards.
It is unsurprising, given it was located in a major forestry area, that the firm became involved with the Forestry Commission. Clark's early work includes developing a plough for use on dry heathland, and repairing and modifying earlier ploughs made by James Cuthbertson.
In the 1960s, Clark and his son Murray worked closely with Forestry Commission forestry experts, such as Jimmy Paterson, to create a number of specialised ploughs. These became standards, used across the United Kingdom and beyond.
Of the many examples of Clark's work that you can find at Ae, the Humpy is the most famous. Its name comes from its distinctive trademark A-frame structure.
Meanwhile, the Rotary Mould Board Plough, designed by Murray Clark, looks like it came from a science fiction film.
In the 1960s, a Finnish Company introduced the Lokomo Ditch plough, threatening Clark's domination of the plough market. This massive plough, which you can see at Ae, looked like it would create some tough competition for the Clarks. However, these fears proved unfounded, as the plough was not suited to Scottish conditions.