I took another look at the Ethan Allen patent, 48249.
http://www.google.com/patents?id=hTIAAAAAEBAJ&dq=48249&jtp=1

It finally dawned on me that Allen is doing something very different. Figiel shows this same technique, of splitting a solid damascus cylinder, but states that it was used during the 17th century in India.

So, Allen is re-inventing this ancient technique. One that was never used in 19th century Europe. It is truly a shame that significant production was not achieved by Allen.

Pete