Pre WW I Niagara No. 4 Bench Grinder Model 60
a knife sharpener/grinder (hand crank) with "Niagara No 4 / The Carborundum Co. Niagara Falls NY" on the face plate.
Made by The Carborundum Company,
Niagara Falls, NY
This company dates back to sometime before 1920. They made abrasive wheels and various specialty sanding, grinding, and polishing systems. From the late 1940s through to at at least the early 1970s they made a wide-belt sander designed for flattening panels and hardwood veneer sanding.
In about 1999 this company was acquired by Sant-Gobain Group.

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