Apparatus for forming serrations in opposed edges of wooden panels for use in I-beams

An apparatus for forming serrations in opposed edges of wooden panels comprisng;

• a. anvils arranged for supporting a stack of the panels in the apparatus and having serrated margins located inwardly adjacent to the edges of the stack,
• b. two spaced sets of broaches having cutting faces defining the pattern of the serrations, one being mounted in the apparatus above each anvil margin and movable horizontally with respect thereto,
• c. said sets of broaches being tapered and having lower portions which are spaced apart by a distance which is substantially equal to the width of the stacks, and being arranged for cutting the serrations simultaneously in both edges of the panels when forced therepast.
• d. actuation means connected to the broaches and arranged for translating them between raised positions wherein their lower portions are above the stack and lowered positions wherein their upper portions are below the stack for simultaneously forming the serrations in both edges of the panels.