US 4,228,830 A · Method and device for manufacturing a single-piece binder with a hanger for sheet packs

Abstract

A device for forming a hanging eye in a wire binder, having a plurality of loops extending through a stack of sheets adjacent one edge of the sheets with the recess formed in the edge, comprising, a housing, a pair of tongs pivotally mounted in the housing, forming a jaw for grasping one of the loops in the binder, and a first driver for closing and opening the tongs to grasp and release the loop. The frame is movable to bring the jaw into the vicinity of the recess with the first driver being energized to grasp a loop adjacent the recess in the jaw. A second driver is connected to the tongs for rotating them about 90.degree. to rotate the grasped loop adjacent the recess. The first driver is then energized to open the jaws and the second driver is energized to remove the jaws from the vicinity of the recess. A hanging eye is thus formed from the loop which has been rotated through 90.degree. in a continuous operation. The invention is also drawn to a method for producing a hanging eye in a continuous wire binder.

Claims17

Dependent claims

A method of forming a hanger eye in a wire binding comprising the steps of:

forming a plurality of parallel loops in a continuous wire, each extending through a stack of sheets adjacent one edge thereof to bind the stack of sheets together;
forming a recess in the one edge of the stack of sheets having at least one loop therein which does not extend through the stack of sheets;
supporting the bound stack with the recess exposed;
providing a pair of tongs forming a loop-clamping jaw which can be closed to grasp a loop;
moving the tongs into the recess in a direction perpendicular to the edge of the stack and around at least one loop within the recess;
closing the jaw to grasp the at least one loop in the recess;
rotating the jaw with grasped loop to rotate the loop approximately 90.degree. in the recess and form a hanger eye;
opening the jaw to release the loop now in the form of a hanger eye;
and moving the tongs away from the recess in a direction perpendicular to the stack eye.

6 more elements

A device for forming a hanger eye in a continuous wire binding having a plurality of loops extending through a stack of sheets adjacent one edge thereof with a recess formed in the edge, comprising, a frame, a pair of tongs movably mounted in the frame forming a jaw for grasping at least one loop in the area of the recess, first means engageable with the wire binding for fixing the plurality of loops with respect to the edge of the stack of sheets, second means connected to said pair of tongs for opening and closing said jaw to release and grasp the at least one loop, third means connected to same frame for moving said frame and said jaw into the vicinity of the recess in the stack edge, and fourth means connected to said pair of tongs for rotating said jaw when it has been moved into the vicinity of the recess by said third means and closed by said second means to rotate the at least one loop by about 90.degree. to form the hanger eye.

Dependencies are inferred from the claim text.

Method and device for manufacturing a single-piece binder with a hanger for sheet packs

Life of this patent

Method and device for manufacturing a single-piece binder with a hanger for sheet packs

Life of this patent

Abstract

Claims17