Just when I think I can guess what a tool is spozed to do, one comes along and really stumps me.  This came from the Wednesday night auction in a box of stuff and one side says" Patented" and the other side has a very faint capital  S, t(or maybe a lower case L).  The opposing pointy things below the pivot point are unique too.  If it's another hog ring pliers, then farmers and inventors had WAY too much time on their hands.....lol   Any help on this would be greatly appreciated.  I wouldn't dare want to use this tool for a purpose in which it was not intended.....lol

DM&FS

Have I stumped the forum with this one????

DM&FS

Stumped maybe, given up no!
They must be a very special specialist tool!? I've checked my early Piano tool cat, my old & new jewelry tool cats, Sellens & both Salaman's dictionaries. They are overall of robust contruction and those strange stops on the handles are unusual. Yes I'm stumped.
Graeme

The jaws look like they could crimp a band clamp, of unknown type.  The stops from over doing the crimp, and never seen anything like them. 

Could be crimpers for cable (stranded wire) ferrules/lugs or maybe not --- good luck with this one.

Here is a crazy guess

How about fishing net lead weight crimper and opener?
From the shape of the jaws it seems like a crimper of some kind. And those handle blades?
For spreading lead back open so you can get it back off the net and reuse it?

Its just that, small hand line fishing I grew up with uses lead crimp on sinkers and certain pliers crimp them
and then use a knife type blade to spread them back out again
  and the whole function seem so similar..............

Except large!
  So, bigger fishing maybe?
  yours Scott

Those stops on the one side are very puzzling...

Stops, or blades??? when the handles are fully closed how far apart are the 'stops'???

Just a wild a$$ guess, but my money is on the "blades" or "stops" are for stripping casing on whatever type wire was being used with the crimped ends.

Observation: the attachment portions of the "stops" or "blades" can't permit much adjustment, or the holes/slots would come close to breaking out, even with no loading.  The opposite side shows that the holes themselves are in fixed locations (not, say, countersunk with below-flush nuts).  I'm wondering if they were retainers for the flat spiral springs sometimes used to open jaws of plier-like tools.  See http://www.felcostore.com/springs?gclid=CKGJn8DjlbQCFYxaMgodFlIAbg for the type I mean.  Using flat pins to locate the spring means that they can bypass each other, keeping it very compact.
No, this doesn't tell us any more about what the tool did, but it could improve our focus, if confirmed by having dimwittedmoose51 look at the tool with this in mind.