Welcome. What a beautiful machine. I am not sure that I understand. If you turn the hand wheel and the pedal moves, but not the other way around, does not make sense. If you turn the hand wheel does the needle bar move? Are you moving the hand wheel in a anti-clockwise direction? Does the needle bar move when you wind the bobbin?
I also think that the Brunswick takes a 20x1 needle, but there are some that will use a 15x1 by dropping it a bit.
Janey - Neat people never make the exciting discoveries I do.