I thought some of you might enjoy these old patents though

You may have to scroll up to the top to see the drawings on some of these links.
http://www.google.com/patents?id=yyVhAA ... &q&f=false
http://www.google.com/patents?id=nQxoAA ... &q&f=false
http://www.google.com/patents?id=tskdAA ... &q&f=false