It's on youtube, can't load it here.
Junkyard materials, some welding...voila! Save backs and arms...we have pretty straight grained woods here, so it would work well...especially in the cold.
http://www.youtube.com/watch?v=uGFTzAWspDw
Oh.I like it.
A heavy weight wedge counter balanced with an automotive coil spring. Genius!
"If voting made any difference, they wouldn't let us do it." ~ Mark Twain.