I do not know anything specific about the technical details in the Wrights' Patents, but I do know for sure that boat, pump and mill sails were all "Known", and so too were the cables, ropes and pulleys and bell-cranks often used to shape and control them. Propellers were also "Known" and used long before 1903 (on boats, on some balloons and on Stringfellow's model aeroplane).
I am not a Patent Lawyer, and guessing what a Patent Office might have decided in the Wright Brother's era is unclear, but I think it is reasonable to say that the UK Patent Office would probably have found plenty of "Prior Art" in their searches.
This would have been shown to the Wrights and/or their Patent Agent(s) seeking their comments. I consider that ALL the mechanisms used by the Wrights were "Known" and "Obvious" and also identical in their function to the muscles and tendons acting on the bones of animal wings.
Therefore I doubt the Wrights's mechanisms could have been patented in UK unless the Wrights were able to demonstrate that their use for an aeroplane was entirely new.