Trimont Manufacturing was founded in July, 1889. The original founders were Alfred, Charles and Edward Ely.From what I have read, the company stopped making wrenchs in the 1940's. The company was located in Roxbury, Ma.
My father and my uncle were partners in a plumbing & heating business for many years. This wrench has seen many years of use and is still in very good condition.My son and I continue to do some plumbling as part of our handyman business.