Yes they are, what else but Nut Crackers.

No no no. The first one, exhaust pipe pliers, the other two are hose clamp pliers. I wonder how many versions of nut crackers there are out there.

I really appreciate the multiplied force of the middle one.

The one on the right ( http://www.datamp.org/patents/search/advance.php?pn=627401&id=35069&set=1 ) has often been "guessed" to be an adjustable pipe wrench.
A while back I had a couple pages of nut cracker patents in the MVWC Newsletter -- they were all ones which looked enough like an alligator wrench to warrant clarification. 

I'll add mine to the list. They came to me by way of member Shopdweller about a year ago. The compound plier linkage puts a great deal of mechanical leverage on the jaws. The tradeoff though is that the jaws have very little travel.

A pretty complex device for simply cracking nuts, but cool nonetheless.

I just re-found this nutcracker the other day.  Marked "STAINLESS ITALY".  Very precise joint and smooth action.  And sleek.


Al