The trial of a cause instituted by Richard Pepper Arden, Esq; His Majesty's Attorney General, by writ of scire facias, to repeal a patent granted on the sixteenth of December 1775, to Mr. Richard Arkwright, for an invention of certain instruments and machines for preparing silk, cotton, flax, and wool for spinning; before the Honourable FrancisBuller... at Westminister-Hall... the 25th of June 1785