Most chainstitch machines I've heard of are heavy duty and used as "bag closers", like on jute feedbags, etc. In the home sewing arena, I've heard of attachments to convert a conventional machine to chain stitch. Lastly, I've heard of people learning to sew on one as a child, so maybe they predated lockstitch machines.
What are the advantages of a chainstitch machine and how are they usually used in the home/factory today to advantage? I only can think of the advantage of uninterrupted sewing because of no bobbin to fill and the fact that they make more spm.
I'm looking for an excuse to buy an old timer I found to restore, but would like to have a use for it when it's done. Any ideas? JPBill