sews

Hi Joe -- thank you for that search link -- it supplied links to blogs that I had not visited before, one with very detailed info but of an earlier vintage - 1874 - http://theprojectlady.blogspot.com/2...nk-sewing.html and with a different bobbin winder. However, all that info helps, either adding to or excluding possibilities.
This 1874 winder actually has a SET SCREW that holds it in place. HUH? Seems like that should definitely have remained as a very helpful feature.

My machine has a hole at the edge in the same location where this winder attaches!
It made me wonder whether the winder unit that I have was actually even original to the machine since it does not fit quite right... A lot can happen in 127 years!

Over the 40 years this machine was produced (until 1902, I believe) there have been improvements and parts added to the winding mechanism, like the ladle type thingy that helps distribute the thread on the spool. However, mine isn't that advanced. (My Anker has it, and that too was a pain to figure out LOL. )

Thanks again for eveyone's thoughts and leads.

(Edited to provide the correct link to the 1874 Singer 12 blog)
http://theprojectlady.blogspot.com/2...nk-sewing.html