Thanks for info received. I also thought all clock keys had square drive. Some Banjo Head nuts are Hex Shape. Anyone have any thoughts on this? - Rex
Just look it up as it call Flat Spring Steel Asst....Timothy....
I thought the same thing but I've never seen a hexagonal clock key; they are all square, or at least all the ones I'm aware of.
I have two of them as your look differ than my. The metal spring that was broken should made your own. Not sure what the name of metal but can buy them at any locksmith supply. I'll see if I can find...
one more pic of back
I posted photos and write-up on this lock on another forum. It was mentioned there that this is an oddball lock so I am sharing it here on this forum so that all that are interested can see it.
I know Corbin referred to these as master ring locks (I have many of those as well :)), however I believe Sargent marketed theirs as the Duplex.
I believe the correct terminology would be "master ring" rather than "duplex".