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US 3,937,006 AGranted
Method and means for obtaining staples or the like
OwnerRolf Erik Lindqvistinventor
Life of this patent
Estimating the term…
Abstract
A machine is disclosed for producing staples or the like. A mat of wires is fed towards rotating discs, which at the same time cut and bend the wire mat to staples. The bending is performed over a fixed bar, where the mat is kept by an arm, and the cutting is performed by one fixed and one rotating knife. Many types of staples are obtainable, including naillike staples with sharp points.
Claims8
A method to produce staples with parallel legs comprising the following steps:
- arranging a plurality of wires of desired cross section in a side-by-side relationship in a plane and adhering the wires to each other to form a mat or strip, moving the mat or strip which is obtained stepwise in the longitudinal direction of the wires, the length of the steps being chosen as desired, cutting off the portion of the mat which has been moved in this way from the rest of the mat while the central portion of said portion is kept fixed, and is given a somewhat concave, blunt V-shaped bending on the upper side, bending the side legs of the cut portion of the mat downwards, principally to mutual parallel positions, moving the cut and bent portion of the mat along a bar, pressing both ends of the central portion of the bent portion of the mat downwards over a ridge, shaped as a blunt V, to make its leg to converge towards their free ends, and interrupting the pressing when the legs have achieved a position, from which they will become parallel by the resilience of the material.
Apparatus for producing staples with parallel legs wherein:
- a feeding member, is arranged to feed, in a stepwise manner and in predetermined, desired steps, a mat of wires, arranged so as to adhere to each other in a plane, comprising a keeping member, arranged to press down a central portion of a mat portion fed in stepwise manner into a shallow, V-shaped groove, on the upper side of a bar which is arranged perpendicular to the movement direction of the wire mat, cutting members, comprising a fixed lower beater plate and an overhang beater, which is fixed, substantially radially, to a circular disc which is attached to and rotating with a shaft, bending members, which are designed as bent bending surfaces, each of the bending members being attached to a respective disc, which rotates with a rotating shaft, and being substantially radially arranged on said discs, said bending members being arranged to bend down both legs of the cut portion of the mat over said bar, expelling members, designed as cam surfaces, arranged on the sides of the rotating discs, which face each other, and arranged to expel the adhering mat of staples which has been formed, along the bar, a pressing member, arranged above said bar and arranged to press both ends of the central portion of the formed mat of staples against the edges of a ridge, bluntly V-shaped, which is arranged below the pressing member, along the upper side of said bar, to make the legs of the staple mat to be pressed into cavities in the sides of said bar, said pressing member being arranged to work in a synchronous manner with said rotating shaft.
Dependencies are inferred from the claim text.