Here is my modest collection to date of Ohio Tools Block Planes. I think it covers a wide spectrum of what you’ll find for Ohio Tools Block Planes and it shows most of the Ohio Tolls Block Plane Patents. The Ohio Tool Company was founded in Columbus Ohio in 1851 by Peter Hayden, of P. Hayden & Co. which had been doing business since 1842, and various associates.
Ohio #09 1/2
Ohio #0120 (with red “japanning”) The Red Jappanning would most likely put this plane 1900-1905.
Ohio Tools #019 Knuckle Block.
A Ohio Tools made Keen Kutter #065
Ohio made Keen Kutter #09 1/2
Note””: All patent information courtesy of http://datamp.org
The geared iron shown on the #0120 is Edward F. Marks – Auburn, NY, US Patent: 680,055, Granted: Aug. 06, 1901.
The lateral adjustment that slides left to right is Edward F. Marks – Auburn, NY, US Patent: 680,0556, Granted: Aug. 06, 1901. This patent also include the cam lock used.