I have been lucky enough to acquire a copy of blueprints for the treadle wheel from The Leach Pottery in St. Ives, Cornwall, England. It is huge (nearly 3MB), but you are welcome to view it in JPG format. Here are the images that I have developed so far..
A SELF RELIANT POTTER by Andrew Holden
Many people also wish they could get a hold of Andrew Holden’s book “A Self Reliant Potter”. Unfortunately that book is out of print. Here are some brazen reproductions.
Those are straight images of the pages, Here is a transcribed version with more ledgable text