It's an antique toy sewing machine from the early 1900's. It doesn't use a bobbin- it just stitches a chain stitch using the top thread. So, no pulling the thread when you take it out of the machine because it just unravels the whole thing. I assume users either tied a knot in the end or used a hand sewing needle to secure the ends.
And I did ask my mother before I took it. My mother inherited it from her mother's friend who had it as a child. My mother was quick to clarify that she was not around in the early 1900's. She was around for the more modern, zippier 1940's version. (Sorry Mother, I couldn't help myself.)