Taylor Hobson (Newing Hall) manual Pantocut

Hi,

I've recently acquired an old Taylor Hobson Pantocut pantograph engraver. I'm looking for anyone with any information on setting up the machine. Its like an old PNC 4E but with a copy table where the CNC part goes.

It also has need of some repair work, there seems to be a belt tensioning device which has been taken off and has no screws. It looks as though it needs a shoulder bolt which I can make but I'd love to be able to confirm the correct dimensions and how it should be set. It I'm not sure if it's meant to lock in one position or be free to rotate as the arm moves. I'm going by the dirt marks to work out where it should go :)

Any help would be greatly appreciated. If anyone knows how I could track down and old operators manual that would be great.

Cheers
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