Thanks Jo, I thought it rang a bell.
John visited me at Ffordd Lerry a day I shall never forget. My mother had passed away not even 10 hours previous to his visit. I don't remember who accompanied him now but it might have been Tony Harcombe?
Tony has a small engine museum that has one of the only known running versions of the Preistman Oil engine.
John was definitely a talented engineer and a lovely personality, despite my obvious grief we spent an interesting Saturday afternoon together.
I ended up buying his Dynamo patterns and the rights to produce but like many other projects it got shelved. My goodness that was 32 years ago just gone.... ( October )
Cheers Graham.