B67-536 TONGUE PLANE. Loughborough Patent. Rare even by the standards of Loughborough planes, this is based on his second patent, issued in 1859. The patent was for a filletster, with a cast iron fence with diagonal slot and U-shaped lever cap, but he also manufactured a tongue-cutting version. See PTAMPIA II, page 42. It has Loughborough's name and the patent date stamped clearly into the beech tote, which is in immaculate condition; japanning 70% and some light surface oxidation. From the collection of Harold Unruh. Good+ 4000-8000