Hi All
Just to let you know that following a reference I must admit I had never thought anything of previously in Cooke & Hunters 1866 Tunneller patent, I've just had delivered the patent drawings for the double tunneller of which we have the photos!!! The actual specification also describes how it was meant to work and move etc! Loads of other patent stuff too, mostly to do with the Munroes of Arbroath and their own machines, all will be revealed at NAMHO (well, as much as I can squeeze in, anyway). Must go and lie down now, brain overheating
Grahami
The map is the territory - especially in chain scale.