I have started to research this machine. Found the patent by "Woodworking Machinery Co."
google.com/patents/about?id=EgJYAAAAEBAJ&dq=1834684
Sold by: Carpenters Machinery Co., Messinger Manufacturing, American Floor Surfacing Co., Nathional Target & Supply .......
I have 78 and counting so far just from Carpenters Machinery Co.
Any paperwork, serial#, model, is it being used...or history, would be appreciated !!!
Bruce