Abstract: A stapler includes a staple magazine rotably connected to an operating assembly. The operating assembly rotates around a shaft in response to pressure applied by a user to a operating handle. The staple magazine includes a plurality of staple clips capable of holding different size staples. The stapler includes means for determining a desired staple size. The staple magazine is rotated by the user to select a desired size staple. A stopper assembly, slidably mounted on a base of the stapler, is positioned by the user to limit and guide a front edge of a stack of papers being stapled. The means for determining a desired staple size and the stopper assembly are free from interference with each other. The stopper assembly is constructed so that a portion contacting the front edge of the stack of papers remains perpendicular to the front edge during a stapling operation.

Abstract: A stapler has a staple magazine with a plurality of staple clips. Each clip is designed to hold a different staple. The desired staple size is selected by rotating an indicator until a staple magazine contacts an inserted stack of paper. Once known, the desired staple clip can be selected by unlocking the staple magazine for rotation about a suspension rod until the desired clip is above an anvil. The magazine is locked, and a staple is punched therefrom. The act of locking, selecting and unlock is accomplished with only one hand.

Abstract: A pair of guide bores in an electric punch support a pair of punching blocks aligned with, and movable into, respective punching holes in a main frame. Two operation arms are pivoted on respective holders and each is connected to one punching block to impart vertical motion thereto. Each operation arm includes a longitudinal guide groove therein. A pair of operation pins are driven in circular paths within the guide grooves to reciprocate the operation arms about their pivots. In the quiescent condition, the one of the guide pins lies at the end of its guide groove, whereas the other guide pin lies about in the middle of its guide groove. A guide concavity at the end of the guide grooves accepts its respective operation pin, whereby the associated operation arm rests at a different rotational position than it would if the guide concavity were omitted. A spring provides a restoring force on the punching block associated with the guide concavity.

Abstract: An electric stapler wherein a guide cylinder is fixedly disposed on a base having a groove for bending a driven staple in such a way as to form a slit for inserting papers to be stapled, and in the guide cylinder is disposed a vertically movable block having at its lower end a downwardly projecting blade for driving the staple toward the staple bending groove. The block is always given a downward pull by springs. A working arm is swingably supported by a shaft fixedly disposed at a position spaced-apart from the guide cylinder, the arm being pivotally secured at one end to an upper part of the vertically movable block and having at its other end a pressure receiving portion.

Abstract: An electric punch wherein lower blades each are formed in the bottom part of each insertion concavity into which sheets of paper being punched are inserted sideways, and a plurality of elevatable upper blades are formed, each upper blade being lowered into the corresponding lower blade by a solenoid excited in sequence.

Abstract: A stapler wherein a staple pushing blade which can be moved up and down from and into a staple guide clearance from which a staple is forced out toward a staple bending groove, and a solenoid having a plunger for moving the staple pushing blade in the vertical direction are provided in a staple container. The staple container is provided with a slider for pressing the staplers toward the staple guide clearance, and a cover member closing an opening at the upper side of the staple container and capable of being moved forward and backward.

Abstract: An electric stapler comprising: a staple bending table; a main arm having a staple push-out blade at the forward edge thereof and supported turnably at the rear edge thereof; a sub-arm turnably supported by said main arm at a position other than the support point for rotation of said main arm; and a drive mechanism connected turnably to said sub-arm at a position more forward with respect to the support point of said sub-arm and imparting a rotary force in one direction to said sub-arm.