I have a nice relationship with a real watch/clock maker/repair gent 3rd generation and all of that - He sends various Telechrons my way from time to time..
So, he is stuck, and I may be too, on a Hammond Bichronous motor - for a large Postal Telegraph.
I thought I'd worked on one of these, but, alas, it was the Synchronous motor. Much much easier. So I opened up my Arcadia, which also wouldn't start. Turns out to be missing a bunch of teeth on on of those phenolic-fiberglass laminates (I think die stamped).
a) I guess these are hard to replace... but my friend does make gears, and does all that nice stuff...
b) I got around the pull turn release semi-spin start when I opened it up - but it looked like it wanted to run the second hand about 1 rev in 15 seconds !!!
there was a tiny wire that looks like it tensioned parts in that back spinning counter-wait -- oops it sprung away.. hmmm
Any thoughts welcome - seems like the fiber-gears might be the big hurdle...