There are 3 published designs for Fowler ploughing engines
The BB1 By John Haining and Colin Tyler is probably the most common and is a compound with 5" dia boiler
The 16NHP Is an earlier style single cylinder engine with 5" boiler again by John Haining
The Z7, Z7S and Superba all to a design by John Haining this is a bigger compound engine with 6" boiler that could be made in the 3 versions
There is also the Kitson and Hewitson easily identified by the Clip drum that gripped a cable rather than the deeper drums of the others that had many winds of cable around them. haining/tyler design
Sarik or Blackgates will have the drawings for the first three, Colin Tylers son was selling drawings for the Kitson but I don't know if he still does
Build date suggests it could be earlier than the Kitson or BB1 which were late sixties, post some images if you can.
If it's an actual implement then the balanced Plough and Mole Drainer were both later publications in the 80s I think.
Edited By JasonB on 27/05/2022 07:46:46