Cin Tool Co

Cin Tool Co by JohnEdgarPark
Cin Tool Co, a photo by JohnEdgarPark on Flickr.

I just cleaned up some surface rust and gunk from this nice little clamp I rescued from a rusted out toolbox I bought, then hit it with some oil to protect the surface.

Here’s a look at the other side:

This being the internet and all, there is a webpage for people interested in the history of clamp companies. From this, the site, I present some history, including the fact that my clamp was designed by the grandfather of the author:

Hargrave brand of Cincinnati Tool Co

The Cincinnati Tool Company was founded in 1877. In 1925, it changed its name to the Hargrave Company, which continued until 1955.
The information below was provided through the kindness of John McCutcheon, of Grand Rapids, Michigan
A “circled H” on tools made by Cincinnati Tool Company signifies that it was designed by my grandfather, John M. Hargrave (1889-1975).
Edward Hollister Hargrave worked for Cincinnati Tool Co. in the late 1800’s. By 1911 or 1912, when he died, I think he was running the company.
John Morris Hargrave (his son) had just graduated from M.I.T., with a degree in Electrical Engineering. He was called home to take over the company. (I don’t know if he owned the company or not at that time, but I am pretty certain that he did eventually. I believe he sold the company and retired sometime in the 1950’s.)
The company made a complete line of hand tools of all kinds, from bar, cee and wooden jaw clamps to cold chisels, star drills, etc.

Here is a drawing from Hargrave’s Patent No. 1,918,469 which I found on the Directory of American Tool and Machinery Patents

Patent 1,918,469


3 thoughts on “Cin Tool Co

    • Yes, I used a wire wheel on a dremel and then an abrasive sponge attachment to strip off light rust and accumulated greasy, dirty muck. I would love to know if you have recommended ways of cleaning these up, especially if my method is in danger of damaging the surface.

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