Another one from email.
The Ideal Mch & Tool Co. Cincinnati adjustable wrench
"Greetings from Missoula, Montana -
We found this interesting wrench recently & are scratching our heads trying to determine what it might have been used for. Have you ever seen one?
Any information would be greatly appreciated - have a good day,
Steven"
Cope lists three Ideals- St. Louis, New York, and Tacoma Washington, but none in Cincinnati, and no wrench quite likje this one. Nothing in Schulz either.
Anyone have any info on this one?

That is a nice find, never saw one like that before. I would take that home with me any day of the week. Looks like a good research project.

 A neat wrench but probably a little short on the practability side. Wonder if one of the Goldberg boys had a hand in the design ?

 I have never seen nor heard about this one.

very interesting how they put the concave on the flat jaw,  that would help to hold a pipe without it slipping out.

that is the type of find we all dream about, yes, if I saw it, I would try my best to have it follow me home.

I will try to find info on it.  this might be a tough task,  it might be one for someone around Cincinnati to
search the company in the library.

I must add, "very nice find."

Wow!  Just wow!

just a little information.

in 1912, The Ideal Machine & Tool Company was located at 128 - 130 Opera Place, Cincinnati, Ohio.
listed as a maker of models of small devices made of metal.
in 1912, they claimed to have a quarter century experience in this line of work.

what I believe is that if you had an invention and needed a working model to present to the patent office, they were capable of performing
that task.
they could also help you market your product.

NOTE; it is very possible that they had only made one example, and never followed thru with a patent ?????? could have passed away or
perhaps did not have the capital to follow through. or were told that it would not sell.  yes, there are mysteries in many finds.

  the person that has this wrench may be a very lucky owner.

  good luck with your search for the correct answer.

  Frank

  was it found at an estate sale ???   could backtrack to the family.   (just a thought)