My mom had a white machine that must have been from the 40s, and it's needle was threaded differently from how my current machines are threaded. I can't remember if it was side to side or back to front, but definitely different. I have no idea what kind of needles it used.
Hope this helps![/QUOTE]
My 301A threads from side to side. I use Schmetz, they are just inserted with the flat side in a different position. I have been using Schmetz since the 70's. They were recommended by my Viking dealer. I think the important thing is to change your needle more often, because they can become dull.