Need help identifying tool

[Dangie]

Please see attached photos. These boards were found in a garage where the owner did blacksmithing. Notice there is a groove on one side and alike size raised piece on the other.
Thanks, Dennis

 

[freudianfloyd]

View media item 87147
Sorry, I dont know what they are, it this was the first thing to come to mind.

 

[2oolhound]

They look like stretching boards for stretching hides but I don't know about the grove in the middle. Mink comes to mind for the size and shape.

 

[madmanc]

i would be interested to find out what these are ,ive a couple of forges near me but never seen anything like them