sentences:  This system was first patented by two agricultural engineers from nearby Fakenham, Percival Everitt and William John Adams.By arrangement Burrells built ploughing engines incorporating the Everitt and Adams winding drum arrangement and engines were supplied either as a pair with left and right drums or singly with a double drum for use with supplied roundabout tackle.In 1881 Everitt and Adams transferred commercial rights for the system to Burrells for royalties of £5 per engine sold, this type of engine then became known as Universal Type Ploughing Engines.