Patent for a new and improved saw-jointer. This design consists in "two casts having longitudinal triangular grooves upon their inner facing sides, having the lower portions of their inner facing sides cut away to form a longitudinal groove, and having the upper portions of their inner facing sides bulged to form longitudinal halves of a socket, with a screw passing through the castings in the space between the bulged socket portions and the longitudinal grooves, the said grooves being adapted to receive a triangular file having its lower face at right angles to the sides of the groove" (lines 64-76).