Abstract: A pair of scissors has a fixed handle, a fixed jaw extending from one end of the fixed handle, a movable jaw pivotable with respect to the fixed jaw, a movable handle pivoted with the fixed jaw along with the movable jaw by a common pivot, and a gear transmission mechanism. The gear transmission mechanism has a rack located at one end of the movable jaw, a drive gear rotatably mounted on the fixed jaw and engaged with the rack, and two driven gears rotatably mounted on the fixed jaw and engaged with the drive gear and the toothed edge of the movable jaw. The two driven gears are driven by the drive gear to cause the movable jaw to move toward or away from the fixed jaw.

Abstract: A pair of shears including a primary handle, a secondary handle, a movable jaw, a connection rod, and a push claw. The primary handle is provided with a fixed jaw. The push claw is actuated by the secondary handle to urge a toothed portion of the movable jaw, thereby resulting in the progressive moment of the movable jaw toward the fixed jaw so as to cut a workpiece held between the fixed jaw and the movable jaw. The movable jaw moves away from the fixed jaw at the time when the secondary handle is moved away from the primary handle so as to actuate the connection rod to pull the lower end of the movable jaw.