Errr... Motor-wound pinhole? Or, does that lever eject from pack through manual rollers? Show more camera! Nice effort regardless.
Thanks Skorj, I was glad to see a nice wide image develop after all the work invested.
the answer is a motor driven back. a rather rare film back, I think, it came off some form of endoscopic camera made by olympus. I built the pinhole contraption so as to slide the film back in like a drawer.. after the exposure is made push the green button on the back and the film is ejected. the leaver opens the mouth of the back to unload/load film packs.
[Sorry, image deleted during forum software upgrade. Please re-upload if so inclined.]