How does my sewing machine needle come unthreaded with out breaking during sewing?

Question

I have been sewing for 20 odds years and my sister and mother before that and have always been baffled how you can be sewing along and suddenly the needle is no longer threaded yet the thread has not broken and there is no split or anything in the eye of the needle. Any one else have that happen? Or can you explain it?

Answer 1

That happens to me when I start sewing if I haven't enough length as a tail. The action of the arm going up pulls the thread right out of the needle