York2024-270. JOINTER. Palmer's Patent. Patented in 1857 by J.F. Palmer of Auburn, New York. PTAMPIA I describes this as "perhaps the most significant development in longitudinal cutter adjustment" as it was the first efficient cutter adjustment to be used by major plane manufacturers - in addition to S.W. and J.F. Palmer, the same mechanism was also used by Truman M'Master and Metallic Plane Co. This one is actually marked b A & E Baldwin, which has not previously been recorded as using the patent. The patent also describes a spring-loaded mechanism to withdraw the cutter on the back stroke, but apparently that feature was too complicated and it was never manufactured. 22" sole with closed tote, wide flat strike button, and 2-1/2" cutter, marked "Palmer's Patent" with the patent date on the cap iron and Baldwin's B mark on the toe. There are a couple of shiny rectangles on the cutter where it looks like labels protected the metal from rusting. The wood is very clean. Rated R2 for rarity (fewer than 25 examples) in Larson & Blanchard. From the collection of Cliff Sapienza. Good+ 400-800