Patent ID: 8413560

Claim:
A quick-release apparatus in combination with a knife plate of a saw grinding machine, the quick-release apparatus combination comprising: a fixture plate with a first projection, said fixture plate being fixed to a saw grinding machine; said first projection including screw threading at least at a distal end thereof; said fixture plate including at least one second projection to prevent rotation of at least one of a knife plate or a fastening member; wherein the knife plate includes a coupled portion having a slot to engage the first projection of the fixture plate; said fastening member mounted onto and not pivotable with respect to the first projection of the fixture plate, wherein the fastening member has an interior side directed towards the knife plate and the fixture plate and including an exterior side having at least one concaved portion; and a control member pivotably connected to the fastening member and including an abutted side and at least one protruding portion formed on the abutted side, with the abutted side and the at least one protruding portion both corresponding to the at least one concaved portion, with the abutted side facing the exterior side of the fastening member, and with the at least one protruding portion selectively pressing the exterior side of the fastening member to attach to the knife plate; the fastening member further comprising a limited slot formed on the exterior side thereof; wherein the control member includes a sliding portion limited to slide in the limited slot of the fastening member.