A paper corner protector cutter includes a base. The base is provided with a frame. The frame is pivotally connected with an operation rod. The operation rod is able to link a blade holder. The blade holder is provided with two blades. Two stop plates are disposed at two sides of the frame, enabling the blade holder to be located between the stop plates. Two stop plates are provided between the stop plates corresponding to the blade holder. The paper corner protector cutter can be assembled and positioned with ease by using a plate-type structure. The required time to assemble or disassemble the paper corner protector cutter can be decreased greatly to enhance the economic benefits.

A variable rake shear comprises a housing (8), a first blade (1) mounted in a first blade mounting (4), a second blade (2) mounted in a second blade mounting (3); and a control device (5) to control movement of one blade mounting to shear the material. Each blade mounting is movable in at least one dimension relative to the housing. One blade is an active blade (1) and the other blade is a passive blade (2). A rake adjustment mechanism (6a, 6b) for at least one of the mountings (3, 4) and the mounting (4) for the active blade (1) has a torque tube linkage mechanism (10, 11, 12).

A variable rake shear comprises a housing (8), a first blade (1) mounted in a first blade mounting (4), a second blade (2) mounted in a second blade mounting (3); and a control device (5) to control movement of one blade mounting to shear the material. Each blade mounting is movable in at least one dimension relative to the housing. One blade is an active blade (1) and the other blade is a passive blade (2). A rake adjustment mechanism (6a, 6b) for at least one of the mountings (3, 4) and the mounting (4) for the active blade (1) has a torque tube linkage mechanism (10, 11, 12).

A paper corner protector cutter includes a base. The base is provided with a frame. The frame is pivotally connected with an operation rod. The operation rod is able to link a blade holder. The blade holder is provided with two blades. Two stop plates are disposed at two sides of the frame, enabling the blade holder to be located between the stop plates. Two stop plates are provided between the stop plates corresponding to the blade holder. The paper corner protector cutter can be assembled and positioned with ease by using a plate-type structure. The required time to assemble or disassemble the paper corner protector cutter can be decreased greatly to enhance the economic benefits.