Gibbs jointer, was marketed by Simonds Saw and Steel Co., The shoes are adjustable to follow the curve of the saw teeth while sharpening crosscut saws. Mar 24, 1914 and Aug 21, 1917 patent dates cast in the frame. An earlier one with the brass thumb screws.
BODY IS MACHINED FROM A SOLID BLOCK OF AIRPLANE GRADE ALUMINUM ALLOY. THE FILE SCREW HOLES ARE STEEL, LOCK INSERTS, SO THE STEEL SCREWS WON'T BIND TO THE ALUMINUM. THE "SHOES" ARE MILLED FROM SOLID STEEL ALLOY BLOCKS AND HEAT TREATED HARDER THAN HELL ITSELF. THE BODY HAS A FULLY ANODIZED PROTECTIVE COATING, AND IS 18-INCHES LONG. CURRENTLY UNDER TESTING BY THE USFS RESEARCH AND DEVELOPEMENT