Abstract: A paper cutter includes a base having a stationary blade; a fixing seat fixed to the base adjacent to one end of the stationary blade and having a connecting portion extending upward from the base, wherein the connecting portion is atop, peripherally formed with a plurality of teeth, and is formed centrally with a through hole for allowing a shaft to pass therethrough; a connecting element having a rotatory portion that is formed with a slot for allowing the shaft to pass therethrough and being atop provided with recesses for receiving the teeth; and a movable blade having a lower edge formed as a curved edge and having a front end fixed to the rotatory portion. Thereby, when the movable blade is pushed downward, the connecting element is driven to rotate and move along the teeth while approaching and sliding with respect to the stationary blade.

Abstract: A knife has a pair of housing parts relatively shiftable between an open position and a closed position and a base on one of the housing parts forming a blade seat. A holding arm mounted on the base is movable relative thereto between a blade-holding position retaining a blade in the seat and a blade-change position freeing the blade so that in the blade-change position the blade can be switched. Interengaging formations on the other housing part and on the arm shift the holding arm from the blade-holding position into the blade-change position on movement of the housing parts from the closed position into the open position.

Abstract: An adapter for a support enclosure bin for a roll of thermoplastic bags is described. The bin has a half round cylindrical wall, first and second vertical side walls attached to a supporting rim. The rim has spaced apertures for mounting the bin to a surface that has an opening that permits passage of outer surfaces of the walls but not the rim. The side walls have integral channels that provide support for a rod for a wide roll of bags. The adapter includes first and second bag dispensers for vertically folded coreless roll mounted bags. Each of the dispensers has first and second side panels that are attached together with a connecting link that aligns the front edges and bottom edges of the dispensers. First and second axles are mounted adjacent the outer side panels of the dispensers with positioning wheels that engage the integral channels of the bin.

Abstract: A compound leverage hand tool with an interchangeable tool head. The tool includes a pair of pivotably interconnected handles and a tool head defined by a pair of pivotably interconnected blade members. Each blade member terminates at one end in a mounting dowel that is pivotably mounted in a pair of retention slots in one of the handles. Tool head latches are pivotably mounted to the handles and include locking fingers that extend over the retention slots. The tool head latches can be pivoted relative to the handles between a locked position, wherein the locking fingers prevent the mounting dowels from being removed from the handles, and an unlocked position, wherein the mounting dowels can be removed from the handles. A spring biases the tool head latches toward the locked position. To unlock the tool head latches and remove the tool head, a user engages a tool head latch and pulls the handles apart.