Just guessing on my part!
Looks like an old bed wrench
Agree bed wrench
Thanks guys That looks like that is it!
Yup - similar are found in the UK.... Used to assemble iron frames beds and also to tighten the mesh or spring frame that supports the (often horsehair and thus unsprung) mattress....
(http://sleephistory.org/yahoo_site_admin/assets/images/woven_spring_couch.75195743_std.jpg)