LOL, that is how it starts....
These come up all the time. (the newer ones)
1st, they are chainstitchers not lockstitch machines. Most folks think that the chainstitch will unravel if you break it but it is not the case with these. They make a locking chainstitch that they claimed was even stronger than a standard lockstitch
They must have been doing something right because these were first made inthe 1860's and the last were made in the late 1950's/early 1960's.... Serious longevity.
They are also known as the "silent machine" because they do not have metal parts that interact like lockstitch machines.
The final neat feature is that they have NO adjustments, except stitch length. NONE, not even tension.
A very lovely lady We met at one of our shows told me her mom had used one of these in the 50's to make her entire prom dress. She went through the whole event terrified that the stitching would break or unravel. Obviously it never did, but when I told the daughter about the true nature of the stitch she told her mom and they had quite a good laugh about it.