The Ross action, patents #19395 and 14866 of 1890 utilize a sliding rod to cock the gun more in the style of the Perks/Scott action and thus are an entirely different concept to the Purdey.The associated ejector systems,patent #1995 of 1890 is complex. In combination, the objective of the designs was to create an easy closing action.[ie Perhaps to offer an alternative to the Purdey action which some say is harder to close than other actions used on S.L.E. guns!]
According to Baker and Crudgington they have not as yet seen a gun built to the Ross patents.
It would appear that John Ross was an out worker to the London trade, who ultimately set up business on his own account.