sentences:  One of their notable inventions was the single-eccentric reversing gear.This compact device allowed the sequence of valve opening of a steam engine to be changed, both in terms of "cut-off" and "direction" without the need for link motion and all the associated levers.In 1898 Mann and Charlesworth produced, on behalf of Philip Parmiter of Tisbury, an agricultural steam cart using the front end of a conventional traction engine and a roller at the rear.