This is what I found with a quick google search: http://olivetreegenealogy.blogspot.com/2011/05/guelph-stove-company-and-genealogy.html
The Guelph Stove Company began in 1897 as the Guelph Foundry Company and was incorporated as the Guelph Stove Company in 1904. According to Artefacts Canada, the initial owners were Dr. Reid, Mr. Frank Nunan, Mr. Christian Kloepfer, Mr. Joseph Brown and Professor Doherty.
The early products were the Idea steel stoves and ranges, and the Kelly hot air and combination furnaces. In 1908, the T. Eaton's Company began to purchase stoves from the Guelph company.
In 1919, Eatons purchased the company. Ontario Archives holds many of the original ledgers and documents from the Guelph Stove Company, all of which can be viewed on site in Toronto Ontario. They are part of the T. Eaton Co. fonds.
The company was located on Paisley from 1897 until about 1929. The original building was located just west of Norfolk and on the south side of the street and is probably where the parking lot for the plaza (with Simply Wonderful and Market Fresh) is now. In 1929 the company built a brand new plant at the corner of York Road and Victoria Road.
The company was sold in 1964 to the Studebaker Company. Studebaker sold the company to White Consolidated Co. in 1968 and they no longer manufactured stoves.
Good luck with any restoration or use. I imagine that parts will be hard to source.