Apparatus for making saw blades

An apparatus for making saw blades having serially formed stepped segments wherein the teeth formed in each segment define a cutting edge which is inclined to the back edge of said blade comprising:

• a support,
• a carriage means mounted on said support,
• means for effecting reciprocation of said carriage relative to said support,
• a clamping station mounted on said carriage for movement therewith,
• said clamping station being adapted to receive a saw blade to be formed,
• said clamping station including a first blade clamping means and a second blade clamping means,
• means responsive to movement of said blade and carriage for actuating said clamping means in unison between an operative gripping position and inoperative non-gripping position,
• means for heating the blade in the gripping position,
• means for laterally moving one of said clamping means relative to the other clamping means when the blade is heated to effect a lateral offset in the blade,
• and means for shearing the back edge of the blade to define a coincidental back edge for said segments.

An apparatus for making saw blades having serially connected stepped segments wherein the teeth formed in each section are progressively sloped relative to the back edge of the saw so that a transverse section progressively increases from leading to trailing edge of each segment comprising:

• a support,
• a carriage slideably mounted on said support,
• a clamping station mounted on said carriage to move therewith,
• said clamping station including a first clamp and a second clamp,
• said clamps being spaced from one another,
• each of said clamps having relatively moveable jaw members for movement between a gripping and non-gripping position,
• means connected to said jaw members for activating said jaw members between a gripping and non-gripping position,
• means for slideably mounting one of said clamps for lateral movement relative to the other clamp,
• means for actuating said one clamp for effecting the lateral movement thereof relative to said other clamp,
• operating means operatively connected to said jaw member activating means to effect the gripping and non-gripping of said jaw members,
• said operating means including a first means responsive to the movement of the saw blade to effect the gripping position of said clamps, and second means responsive to the movement of said carriage to effect the non-gripping position of said clamps,
• said clamps including a heater to heat the saw blade portion clamped thereby,
• a time delay device operatively connected to said heater to effect the energizing and de-energizing in timed sequence to the gripping and non-gripping of said clamps,
• and a means for shearing the back edge of the offset segments to define a back edge which is coincidental to each formed saw segment.