On Tue, Oct 18, 2011 at 12:08:08PM -0400, David Hillman wrote: > On Tue, 18 Oct 2011, john niolon wrote: > It's actually based on a 1918 patent... an American one. HJ Watts > patent #1,241,176. When I was a kid, I saw a replica in action at a Ripley's 'Believe It Or Not' museum.