Manufacturing container or tube from paper; or other manufacturi – With cutting – breaking – tearing – or abrading – Including assembling or disassembling of distinct members
Patent
1997-03-10
1999-05-04
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
With cutting, breaking, tearing, or abrading
Including assembling or disassembling of distinct members
493353, 493392, B31F 502, B42F 300
Patent
active
058998411
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for the mechanical connection of documents in accordance with the preamble of claim 1.
Today, documents of a size of a few pages or sheets of paper are customarily stapled. Simple staplers of various sizes are used for this. They consist of a base, a staple magazine pivotably connected with it and a cover, pivotably connected with both and having a plunger. The papers are bundled and held between the staple magazine and the base, then the cover is pushed down, in the course of which the plunger pushes one staple out of the staple magazine downward through the papers on the base. The staple is bent on a slot in the base. However, the use of metal staples is often not desired or even prohibited. For example, they are an obstacle to recycling of paper. For this reason several attempts have been made to create a staple-free fastening.
Such a fastening device operating without staples is known from U.S. 3,577,575 (Fumio Taniguchi). The design corresponds to that of a stapler. Instead of pushing staples through the paper, a paper tongue is stamped out in three directions with a stamping knife. Simultaneously a cut is made in the paper transversely thereto by a stylus. The stylus has an eye, a pivot cam is provided in the stamping knife. It is pivoted after the tongue has been stamped. In the course of this it bends the cut-out paper tongue back and guides it into the recess on the stylus. When the fastening device is released, the pivot blade and the stylus are retracted from the paper. In the process the paper tongue is pulled through the slit to the other side of the paper. In this way the layers of paper are kept together by the paper tongues which have been cut out and pulled through. This device has the advantage that no metallic or other staples are needed. Fastening takes place by means of the paper itself. However, with the fastener open, the blades are free-standing. They are easily damaged and constitute a considerable danger of injury for the user. These fastening devices are put together from more than thirty individual elements.
It is the object of the invention to provide a fastening device wherein the stamping and cutting elements are not uncovered either in the state of rest or during, instead they are completely protected. It is intended that they do not become damaged and should not present any danger of injury to the user.
This object is attained by the invention recited in the claims.
A further advantage of the invention resides in that a fastening device in accordance with the invention can be constructed of only seven individual parts. This considerably reduces the production costs and reduces the susceptibility to trouble.
The invention will be described below in connection with the drawings. Shown are in:
FIG. 1, a device in accordance with the invention in cross section, with paper webs inserted, in the position of rest;
FIG. 2, a device in accordance with the invention in cross section, with paper webs inserted, at the end of the fastening process;
FIG. 3, a device in accordance with the invention in cross section, with fastened paper webs at the conclusion of the fastening process in the position of rest.
FIG. 4, the stylus in a front view;
FIG. 5, fastened sheets of paper in cross section;
FIG. 6, a plan view of the device, and
FIG. 7, a plan view of the pivoting and bending element.
A device in accordance with the invention is shown in FIG. 1 in the position of rest with paper webs inserted. It consists of three main elements, namely the base 1, a pushing element 3 and a cover 2.
The base 1 is U-shaped in cross section, it has inward projecting first detent cams 11 on the lateral flanks. A bearing block 12 is disposed on the bottom of the base 1. A stamping and bending element 15 is pivotably fastened on it, and an upward projecting stylus having cutters and an eye is also fastened thereon. The stamping and bending element 15 is pivotably maintained on the bearing block 12 in a pivot fastening 151. It has a carrier 154 for the operative connection wi
REFERENCES:
patent: 1055680 (1913-03-01), Stacy et al.
patent: 1130589 (1915-03-01), Gage
patent: 1229213 (1917-06-01), Bernard
patent: 1324103 (1919-12-01), Cone
patent: 3577575 (1971-05-01), Taniguchi
patent: 5024643 (1991-06-01), Kastner
Coan James F.
Metodya B & B
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