Who Made That Block Plane

I always get asked about knuckle block planes. Stanley, Sargent, Union, and many others made a knuckle block and they made them for many other brands. Some never have a name stamped other than the cutter. These often got changed or lost.

So who made that block plane  (other block plane post)

Here are some clues

Sargent Knuckle Blocks

 

Union Block Planes

Stanley Block Planes

Siegley (Stanley made)

Ohio Tools (along with some Keen Kutters made by Ohio Tools)

 

An Ohio Made Keen Kutter Block Plane