Abstract: A safety structure for rotary paper trimmer comprises a carriage, a cartridge, a blade holder, a locking means, an unlocking means, a biasing means and an actuating means. The blade holder is received inside the cartridge for holding a cutting blade and slides downward to expose a cutting edge of the cutting blade outside the cartridge during cutting operation. By means of the cooperation among the locking means, the unlocking means, the biasing means and the actuating means, the cutting edge is ensured to be concealed completely inside the cartridge when the cartridge is removed from the carriage and when the carriage cover is not pressed by the user, therefore preventing the cutting edge from injuring the user when the rotary paper trimmer is not in use.

Abstract: The present invention relates to a kind of flat-clinch stapler comprising a staple pressing device, a staple magazine device, a base and a staple flat-clinching device whereas the staple flat-clinching device comprises a movable platform a movable platform supporting block, a movable platform position fixing block and a spring; and also comprising a push arm whereas the push arm comprises an upper fulcrum, a middle fulcrum, a blocking part, and a lower push arm.

Abstract: A light weight hand-operated stapler which comprises a pressing cap, a plastic head, a metal drive plate, a base and a plastic magazine which is connected to the base via a hanger and connected to the plastic head via a pin, a metal guide head disposed at a front end of the plastic magazine and substantially covering the front wall of the plastic magazine, a first elastic mechanism for pushing the staples down the plastic magazine to reload the stapler, a second elastic member disposed between the pressing cap and the plastic head for pushing the pressing cap up to its original position after stapling, and a third elastic member disposed between the base and the plastic magazine for pushing the plastic magazine up to its original position after stapling.

Abstract: A light weight hand-operated stapler which comprises a pressing cap, a plastic head, a metal drive plate, a base and a plastic magazine which is connected to the base via a hanger and connected to the plastic head via a pin, a metal guide head disposed at a front end of the plastic magazine and substantially covering the front wall of the plastic magazine, a first elastic mechanism for pushing the staples down the plastic magazine to reload the stapler, a second elastic member disposed between the pressing cap and the plastic head for pushing the pressing cap up to its original position after stapling, and a third elastic member disposed between the base and the plastic magazine for pushing the plastic magazine up to its original position after stapling.

Abstract: A hand-held cutter with automatic blade changer which has a casing, short blades each with an aperture, a pushbutton and a plug, and the casing is composed of an outer casing, a fixed blade holder and a retractable blade holder; and it further has a blade changer which is divided into a blade unloading chamber and a blade loading chamber. The present invention has the advantages of being simple in construction and convenient to use, and allowing the users to change and dispose of the blades without touching them, thereby effectively protecting personal safety.

Abstract: A hand-operated stapler comprises an arm, a sliding belt and a blocking member, wherein the arm comprises a front end which acts as an effort, a rear end which acts as a fulcrum, and a load portion in between the front end and the rear end of the arm; and the rear end of the blocking member is connected to a front end of the sliding belt. At a non-stapling default position a front end of the blocking member is biased to be disposed above the stopper and blocks the upper clincher member from engaging with the lower clincher member. At a stapling position the rear end of the sliding belt is pulled upward, thereby pulling the blocking member rearward and away from the stopper and thus allowing the upper clincher member to engage with the lower clincher member.

Abstract: A hand-operated stapler comprises an arm, a sliding belt and a blocking member, wherein the arm comprises a front end which acts as an effort, a rear end which acts as a fulcrum, and a load portion in between the front end and the rear end of the arm; and the rear end of the blocking member is connected to a front end of the sliding belt. At a non-stapling default position a front end of the blocking member is biased to be disposed above the stopper and blocks the upper clincher member from engaging with the lower clincher member. At a stapling position the rear end of the sliding belt is pulled upward, thereby pulling the blocking member rearward and away from the stopper and thus allowing the upper clincher member to engage with the lower clincher member.

Abstract: A stapler that requires exertion of less effort comprising a body, an electric motor, a power supply, a power supply switch, a motion transmission mechanism having a gear cluster driven by the electric motor, a staple driving mechanism having a driving blade and a staple magazine driven by the motion transmission mechanism. The motion transmission mechanism comprises a rocking arm, and the rocking arm is a crank which is composed of a connecting shaft and a rocking shaft. The end of the connecting shaft connects to the top of the driving blade. The end of the rocking shaft is a gear, and the gear of the rocking arm has teeth which mesh with teeth of at least one gear of the gear cluster. The motion transmission mechanism comprises a double pole changeover switch and a micro switch.

Abstract: A stapler that requires exertion of less effort comprising a body, an electric motor, a power supply, a power supply switch, a motion transmission mechanism having a gear cluster driven by the electric motor, a staple driving mechanism having a driving blade and a staple magazine driven by the motion transmission mechanism, the motion transmission mechanism comprises a rocking arm, and the rocking arm is a crank which is composed of a connecting shaft and a rocking shaft, the end of the connecting shaft connects to the top of the driving blade, the end of the rocking shaft is a gear, and the gear of the rocking arm has teeth which mesh with teeth of at least one gear of the gear cluster. The present invention is of a simple and practical construction, has components for rotation with a smaller angle of movement, requires less time for stapling and resetting, requires less time and effort for operation, and is capable of ensuring the consistency of the stapling quality.

Abstract: A hand-held cutter with automatic blade changer which comprises a casing, short blades each with an aperture, a pushbutton and a plug, and the casing is composed of an outer casing, a fixed blade holder and a retractable blade holder; and it further comprises a blade changer which is divided into a blade unloading chamber and a blade loading chamber. The present invention has the advantages of being simple in construction and convenient to use, and allowing the users to change and dispose of the blades without touching them, thereby effectively protecting personal safety.

Abstract: The present invention relates to a crayon sharpener, which comprises a cavity to which a crayon is to be inserted, a stopper with a plane at one end, a blade which is fixed at an angle corresponding to the cavity and the stopper, and a connecting shaft which has a hole in it for installing in an electric or hand-operated sharpener. This invention can sharpen crayons smoothly and quickly without easily breaking them and the tips of the crayons will not be too sharp. This invention can be used alone or installed in an electric or hand-operated sharpener as a replaceable part to sharpen crayons and is more convenient and economical to use.

Abstract: The present invention relates to a crayon sharpener, which comprises a cavity to which a crayon is to be inserted, a stopper with a plane at one end, a blade which is fixed at an angle corresponding to the cavity and the stopper, and a connecting shaft which has a hole in it for installing in an electric or hand-operated sharpener. This invention can sharpen crayons smoothly and quickly without easily breaking them and the tips of the crayons will not be too sharp. This invention can be used alone or installed in an electric or hand-operated sharpener as a replaceable part to sharpen crayons and is more convenient and economical to use.