3. The Wills Engine (004) of 1886 and now housed in what was the coal store was manufactured by W & F Wills & Co., Bridgwater. It is fitted with “poppet” valves actuated by an unusual design of Wills patent Variable Valve Timing which, as far as the Trust is aware, is the only surviving example of this type of valve gear. The engine spent its working life at a Bridgwater brickworks, powering a clay mixer for the manufacturer of bricks and tiles.