Maker, W. Jackson, London, England?

Note in the photos above that all of the escapement components and second wheel (of a total of 5 wheels in the going train) all lack conventional pivots at the end of their respective arbors. Instead a needle pivot on the end of a threaded rod and equipped with a knurled stop nut is screwed into a hole in the frame and secured (photo four). This pivot mates into the holes at the ends of their respective arbors. When constructed properly, this system has less friction than conventional arbor-mounted pivots. The last photo (below) shows the area containing the various cocks stripped of the escapement components to better reveal the needle pivots inserted into these as well as the frame.