Pivoted stapler assemblies
AssigneeWilhelm Dahle Buro- und Zeichengeratefabrik
InventorGerald Dahle
Life of this patent
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Abstract
A stapler assembly frame arranged to be associated with a common office stapler to form a complete assembly, the frame being composed of a pair of two-armed levers pivotally connected at a location between the arms of each lever in the manner of scissors. In the region of their pivot axis one scissors lever is provided with a passage opening through which passes the other scissors lever and the levers provide a fulcrum for each other in the region of the passage opening. The passage opening is dimensioned so that the rear, or pivot, end of the office stapler can be accommodated therein.
Claims31
In a stapler assembly including a frame composed of first and second levers pivotably connected together to pivot relative to one another in a pivot plane and about an axis of pivotal pivotal movement, at least a portion of each lever having a U-shaped cross section, and an office stapler which is operable independently of said frame and which is releasably fastened to, and carried by, one of the levers and is arranged to be acted upon by the other lever for movement with respect to an associated pivot axis of said stapler to effect a stapling operation, the improvement wherein:
- each of said levers is a two-armed lever the arms of which are disposed to respectively opposite sides of the axis of pivotal movement and said levers cross each other in the form of scissors;
- said first lever is provided, in the region of said axis of pivotal movement, with a passage opening and includes a pair of lateral jaws coplanar with the sides of said U-shaped portion of said first lever and laterally delimiting said passage opening;
- and
- a portion of said stapler extends into said passage opening.
In a stapler assembly including a frame composed of first and second levers pivotally connected together to pivot relative to one another in a pivot plane and about an axis of pivotal movement, and an office stapler releasably fastened to one of the levers and arranged to be acted upon by the other lever to effect a stapling operation, each of the levers being a two-armed lever the arms of which are disposed to respectively opposite sides of the axis of pivotal movement and the levers crossing each other in the form of scissors, the first lever being provided, in the region of the axis of pivotal movement, with a passage opening extending along the pivot plane and with a pair of lateral jaws extending parallel to the pivot plane, traversing the axis of pivotal movement and delimiting the lateral sides of the passage opening, and the second lever extending through the passage opening and being provided with a pair of lateral jaws extending parallel to the pivot plane, traversing the axis of pivotal movement and laterally contacting the inner surfaces of the lateral jaws of the first lever, the improvement wherein:
- said lateral jaws of one of said levers are provided with respective, short pivot pins coaxial with, and defining, the axis of pivotal movement and extending toward said lateral jaws of the other said lever;
- said lateral jaws of said other lever are provided with respective bearing holes into which said pins snap into engagement when said second lever is pushed through said passage opening;
- and
- said office stapler is provided with a base plate via which said stapler is releasably fastened to said one of said levers.
In a stapler assembly including a frame composed of two levers pivotally connected together, each of the levers being a two-armed lever the arms of which are disposed to respectively opposite sides of the axis of the pivotal movement, of the levers relative to one another, and the levers crossing each other in the form of pair of scissors, one arm of one of the levers being provided with lateral jaws extending along its longitudinal edges and parallel to the plane of pivotal movement of the levers, one of the levers being provided, in the region of the axis of pivotal movement, with a passage opening extending in the plane of pivotal movement of the levers relative to one another;
- the other of said levers extending through the passage opening, the passage opening being dimensioned to accommodate the pivot end of the office stapler, the assembly further including an office stapler provided with a base plate via which the stapler is firmly seated between the lateral jaws of the one arm of the one of the levers, the improvement wherein:
- said base plate of said office stapler is provided with lateral walls which diverge in the direction toward the lower surface of said base plate, and in the region of said one arm where said base plate is firmly seated, the inner walls of said lateral jaws correspondingly diverge so as to form a dovetail guide.
In a stapler assembly frame arranged to releasably receive an office stapler to form a complete assembly, which frame is composed of two levers pivotally connected together, with the office stapler adapted to be releasably fastened to one of the levers and being acted upon by the other one of the levers to effect a stapling operation, each of the levers being a two-armed lever the arms of which are disposed to respectively opposite sides of the axis of pivotal movement of the levers relative to one another, and the levers crossing each other in the form of scissors, one of the levers being provided, in the region of the axis of pivotal movement, with a passage opening extending in the plane of pivotal movement of the levers relative to one another, the other of the levers extending through the passage opening and the passage opening being dimensioned to accommodate the pivot end of the office stapler, the frame being further composed of a leaf spring disposed between the levers to urge them in an opening direction and fastened to the inside of one arm of one lever, the improvement comprising detent cams connected to each said lever and located to abut against one another during an opening movement of said levers for limiting the spreading angle produced between said levers by the pressure of said leaf spring, while permitting further spreading of said levers under additional operating pressure.
In a stapler assembly frame arranged to releasably receive an office stapler to form a complete assembly, which frame is composed of two levers pivotally connected together, with the office stapler adapted to be releasably fastened to one of the levers and being acted upon by the other one of the levers to effect a stapling operation, each of the levers being a two-armed lever the arms of which are disposed to respectively opposite sides of the axis of pivotal movement of the levers relative to one another, and the levers crossing each other in the form of scissors, the one of the levers being provided, in the region of the axis of pivotal movement, with a passage opening extending in the plane of pivotal movement of the levers relative to one another, the other of the levers extending through the passage opening and the passage opening being dimensioned to accomodate the pivot end of the office stapler, the improvement comprising detent cams connected to each said lever and located to abut against one another when said levers are in a normal open position, and wherein:
- one arm of one said lever is arranged to carry the office stapler;
- said one arm of said one lever and that arm of the other said lever located at the opposite side of the axis of pivotal movement are each provided with an outer longitudinal surface perpendicular to the plane of pivotal movement;
- and said outer longitudinal surfaces of the two said arms are coplanar, and define a supporting surface for said frame, when said levers are in said normal open position.
Dependencies are inferred from the claim text.