I found CarolineS's machine. I love the light fixture. Too bad the goodwill machine is missing the lamp shield.
http://www.quiltingboard.com/vintage...c-t177066.html
It looks like everything is on a bracket. If the motor housing isn't cracked I would still try to preserve it, though.
This graybar is cast differently:
http://www.auctionflex.com/showlot.a...222153&lang=En