Combined punching and stapling device
OwnerYoshio Mitsuhashiinventor
Life of this patent
Estimating the term…
Abstract
In a hand-operated punching device such as that incorporated with a stapler to enable the same both to staple and perforate sheets of paper or the like, an improved punch element is provided which is movable into and out of a hole in a die for perforation. The punch element has three or more sharp-edged cutting teeth formed peripherally on one end thereof in order to improve the perforating or cutting ability of the device. The axis of the pivot pin connecting the base, lever and staple magazine lies in a plane extending transversely to the longitudinal axis of the punch element intermediate between the distal end thereof and a location thereon to which the punch element is allowed to advance relative to the inlet of the hole. Numerous variations are possible in the structural details of the punch element.
Claims13
A combined punching and stapling device comprising:
- a base having an anvil on its distal end;
- a lever pivotally secured at its proximal end by means of a pivot pin to the proximal end of the base;
- a staple magazine pivotally secured at its proximal end by means of said pivot pin so as to be swingable about the pivot pin relative to the lever;
- a hammer fixed at the distal end of the lever so as to be movable into and through the magazine for ejecting successive staples from within the magazine and for forcing the staples against the anvil for stapling operation;
- a die provided on the base;
- a punch element fixedly mounted on the staple magazine for relative movement into and out of mating engagement with the die as the magazine and the base are pivoted toward and away from each other;
- and at least three sharp-edged cutting teeth formed peripherally on the distal end of the punch element, said die being in the form of a flat plate having formed therein a hole for receiving the punch element, the axis of said pivot pin lying in a plane extending transversely to the longitudinal axis of the punch element at a position thereon intermediate between the distal end thereof and a location thereon to which the punch element is allowed to advance relative to the inlet of the hole.
Dependencies are inferred from the claim text.