Does anyone have any information on late 19th-century residential gas lighting
systems?.  More specifically, a gas machine system like the Springfield Gas
machine.  This system included a machine that generated lighting gas from
gasoline, an air pump, and pipes.  I may be excavating such machinery at
Ashland, Henry Clay's Estate in Lexington, Ky. in the Fall.  It seems that the
air pump included a large circular stone that is similar to a mill stone.  I do
not know what the actual function of the stone was, but it was carved with the
Springfield name.  Has anyone ever encountered such machinery archaeologically?
 Any information would be very helpful.
 
Thanks,
 
M. Jay Stottman
University of Kentucky
Kentucky Archaeological Survey