Looks like "Grandma"...My 3/4 Singer that was my Grandmothers....She was in a cabinet in my basement and got all rusty...I recently went down and cleaned her up...You can get that rust off those parts by soaking them in Brasso Metal Cleaner...Take the parts off, let soak for hrs and then with a very fine steelwool lightly remove rust......Grandma is all rust free, now I'll oil her and she'll be running or sewing away...Don't give up on her...She'll come back...