Staying overnite at Mansfield, OH -- Google books search for "Mansfield Ohio Wrench" turned up this 1921 Ohio Brass catalog with a double handfull of specialized wrenches scattered in among the hardware:
(
https://books.google.com/books?id=5mw3AQAAMAAJ ) They all have part numbers in the illustrations so maybe will identify an "orphan" or two.