What is it? Game 39  This week's collaboration with What is it?
Blog brings us this strange contraption - can you guess what it
is?  Since no one guessed correctly in last week's game, we'll
carry over the prize (a Free Live! Pro Webcam by Creative). It's
not the latest gizmo, but hey - it's free!  Contest rule is
darned simple: place your guess in the comment section. One
guess per comment, but you can guess as many times as you'd
like. Please post no URL - let others play. The first person who
guessed correctly will win the webcam. If you live outside of
the US or Canada, however, the prize is a Neatorama T-shirt
instead.  For more clues (like dimensions and such), check out
the What is it? Blog.  Come on, people! Let's win something
already... Good luck!  Update 9/28/07 - The answer is:
Mechanical lifting jack for use on wagons and carriages. The
rack-plate on the right is the fulcrum, while the one on the
left serves as a catch.  From the patent: ...principally
intended to be used for elevating and suppo