http://ismacs.net/newhome/new-home-s...e-manuals.html
http://www.ismacs.net/domestic/image...ng-diagram.jpg if the tension is on the side
or
http://ismacs.net/newhome/images/new...hreading-1.jpg if it't the AB model with those plates on the top
All of the shuttle bobbin machines are pretty similar to thread and to wind a bobbin on.