B62-401. SCREW-ARM PLOW PLANE. E.W. Carpenter. Super clean example of Carpenter's revolutionary 1838 patent. The rosewood outer nuts, almost always found badly chipped, are near perfect, and the boxwood arms, inner nuts and fence facing have only a few minor dings. Original rosewood wedge with Wm. Butcher cutter. D4 mark with the "patent" and "improved arms" lines reversed. From the collection of Steve Dice. Fine 1000-2000