Abstract: A stapler comprises an upper assembly for driving a staple through a stack of papers to be bound, and a lower assembly with a staple anvil for clinching the staples only after the staples are completely driven through the papers. The staple anvil is kept clear of the effort to drive in the staples by a risen table that is allowed to drop around the staple anvil in a second stage of operation. The upper assembly and a handle for the user are provided that are arranged to give the user a 2:1 mechanical advantage with a lever arrangement.

Abstract: A stapler comprises a mechanism to first fully drive staples into sheets of materials, e.g., paper, and only then to fold over the legs of the staples. This results in a flat clinch and very few crumpled staples. An anvil table is locked in a raised position above a staple anvil, and a trigger mechanism will operate only when a staple blade has proceeded through a staple magazine and forced a staple fully out. The trigger mechanism slides back when this happens, and unlocks the anvil table so it can drop down around a staple-leg-folding anvil. The whole top of the stapler and the papers being stapled drop with the already fully inserted staple onto the anvil to fold the staple legs over flat.

Abstract: A punch comprises a handle and arms on a hinge that change their mechanical advantage against punching heads as the arms pass through the middle part of their travel. Each punching head has a pin near the hinge that passes through slots in the arms radial to the hinge, and through vertical slots tangent to the hinge in punching head towers. A Class-2 type lever arrangement results with the hinge acting as the fulcrum. The mechanical advantage of the handle and arms reaches a maximum when the punching head pins shuttle closest to the hinge. The cutting faces of the punching heads are finished with a saddle contour and set at an angle, with one extending a bit further down into a paper slot than the other. The result is a substantial reduction in effort required of the user.

Abstract: A stapler comprises an upper assembly for driving a staple through a stack of papers to be bound, and a lower assembly with a staple anvil for clinching the staples only after the staples are completely driven through the papers. The staple anvil is kept clear of the effort to drive in the staples by a risen table that is allowed to drop around the staple anvil in a second stage of operation. The upper assembly and a handle for the user are provided that are arranged to give the user a 2:1 mechanical advantage with a lever arrangement.