Steve.....WOW!!! Thank you for the large version of your avatar picture. What an absolutely stunning machine.
People might enjoy this animation, which looks like it would be what your machine does to create stitches:
http://oldsewingmachines.acandanex.co.uk/g&b.html
We are busy with an event here in Colorado, no time to keep up with the goings on, but thank you for posting about this machine.
Dianne in Colorado