I have recently bought a second hand Adcock & Shipley Model No OC
horizontal milling machine, which has been fited with a Dore-Westbury
Light Vertical Milling Machine Head.
I would like to locate some operating/maintenance instructions for the
original machoine and the Vertical Milling Head. Any ideas?

In particular, I need to know how to change the vertical head speed.
There are two speeds available from the pulleys, but I believe that a
total of 6 speeds can be obtained buy use of the epicyclic gearbox.
Anyone have any idea how this is done?