US 4,901,981 AGranted

Device for removing a staple from a stapled bundle of sheets

AssigneeOce-Nederland B.V.

InventorsAntonius A. Knippels, Thomas T. C. van Gerwen

Life of this patent

Estimating the term…

Loading patent…

Abstract

Device for removing a staple from a stapled bundle of sheets by moving the bundle over a supporting element past a staple removing strip. The strip extends above the supporting element at a small acute angle therewith and is fixed to an arm which is rotatably mounted on a shaft positioned at the side of the strip facing away from the acute angle and below the supporting element. The strip is moved upwards when a stapled bundle of sheets, with the legs of the staple facing downwards, is fed between the supporting element and a wedge-like tapered end of the strip, which end presses onto the supporting element. When in this way the staple is positioned in front of the wedge-like tapered end of the strip, the bundle is pulled towards the strip, the end of the strip penetrates between the crown of the staple and the bundle and the staple thereafter is pulled out of the bundle. The pulled-out staple drops in a receiving tray formed beneath the supporting element.

Claims8

Dependent claims

A device for removing a staple from a stapled bundle of sheets, compromising a strip projecting freely to a wedge-like tapered end, said end capable of being inserted between the bundle and the staple present therein, said device including a supporting means having a contact surface on which surface the wedge-like tapered end of the strip is pressed at an acute angle of at most 20.degree. relative to the contact surface, said device further including a fastening means for connecting the strip movably to the supporting means such that the bundle may be inserted between the supporting means and the strip and pulled backwards relative to the direction of insertion of said bundle to remove the staple by means of the strip,

wherein the fastening means comprises an arm and a shaft, said arm having one U-shaped end rigidly attached to the strip, the arm being bent over the strip and extending beyond the edge of the strip that faces away from the acute angle, the other end of the arm being bent with a portion thereof extending below the level of the contact surface and being rotatably mounted on the shaft, the shaft being perpendicular to the strip and fitted at a fixed location with respect to the supporting means.

Dependencies are inferred from the claim text.