I'd certainly like to see more pictures. At the moment I'm guessing that the crank handle fits into the end of that shaft on the same side where it is stored, below the bottom of the flywheel, and drives the opposite end of the crankshaft. I don't see a ballrace at the end of the shaft, so there may be a ratchet involved. This seems a bit exotic, but after all the machine is British. Now that I've guessed, naturally I want to know if I'm right.
