Thank you for your replies jlhmnj, HelenAnn, Rodney, KenZ and Macybaby :-)
KenZ, I have a Singer 27 here. The bobbin winder arm is shaped differently, and the bobbin is shorter on the Kenmore than on my 27. It would help if they were interchangeable so I could at least wind some decent bobbins.
Speaking of which -- jlhmnj, winding by hand would be 2 person job. I'd have to frank with my right and I'm hopeless with my left. Maybe it's a matter of practice though....
HelenAnn and Rodney, thanks for the positive comments.
Thanks Macybaby/Cathy -- I had/have hopes that you may have something in your stash :-). Thanks for taking the time to look.
Best, Sabine