Finally, here is a Timeline I developed.
It’s not meant to be comprehensive and exhaustive. There are other examples out there. I already mentioned the Channellock “GripLock” for example. Another one I am always on the hunt for is the Kash Industries “K-VISE” (2,489,895, Nov 29, 1949). And I sure would love to have the Collison & Wright. As I find others, I will update this chart. For now, it’s just a handy way of organizing and seeing all the data on what I have in my collection and how it relates to others, including the Petersen line, in chronological format.
Note that as I alluded to earlier, DATAMP considers the Collison & Wright the first of a kind for locking plier-wrench type tools. Note further that Ord Mfg was in Ord, Nebraska, and Parrot Mfg was in Fremont, Nebraska. Ord and Fremont are in eastern Nebraska, not that far from DeWitt. I’m not saying that’s where William Petersen got his ideas. By the same token, it’s not at all out of the question, either. If Vise-Grips had been born in Pittsburgh or New England or L.A., I don’t think it would be remarkable. But the fact that the Collison & Wright locking plier-wrenches were being made in eastern Nebraska just a few short years before Vise-Grips very fairly begs the question.
Here's what they would look like!
