US2762372A - Filler having a reinforced perforated edge - Google Patents

Description

Sept. 11, 1956 P. JOCHIM A REINFORCED PERFORATED EDGE FILLER HAVING Filed June 18, 1953 United States Patent 2,762,372 FILLER HAVING A REIZIN 'ORCED PERFORA'IED Paul Jochim, Strasbourg, France Application June 18, 1953, Serial No. 362,628 1 Claim. (Cl. 129-1) My invention has for its object fillers such as loose leaves, document-holders or the like, having perforated edges with a view to the interchangeable mounting on a file provided with a stringing mechanism, such as a multiple ring mechanism.

My invention has for its object to reinforce the perforated edge of the fillers to an extent such as will avoid as far as possible any tearing through the perforations. My invention has further for its object to provide these perforations in the immediate vicinity of the outer bounding line of the edge so as to avoid any reduction in the area of the useful surface of the fillers, as far as possible, while simultaneously making the turning over of the sheets easier.

It is well known that in such fillers, the edge perforations should be provided sufiiciently far inside the edge so that enough material may remain to make the tearing out more difficult. By gluing over the perforated edge a reinforcing perforated strip, made of paper, fabric or any other suitable material and the perforations of which strip register with those of the said edge, it is possible to increase, it is true, the resistance of the edge against tearing through the perforations; but this does not provide an actually sufiicient protection against such tearing out. Further drawbacks also appear in this prior arrangement since the extent of the perforations inwardly of the edge reduces the useful area on the filler, while the turning over of the fillers is substantially more difiicult due to the thickness of the added strip.

The object of my invention which provides for the removal of these drawbacks consists in that the inner edge of the fillers forms a hollow member provided at points registering with the stringing elements of the stringing mechanism, with recesses opening freely into the outline of said edge; further, there is secured inside the hollow edge thus formed, a thin resistant rod, preferably a wire of resilient steel, adapted to close outwardly the abovementioned recesses in the edge and consequently to form the outer boundary of the stringing openings thus defined. I have illustrated in the accompanying drawings various embodiments of my invention. In said drawings:

Fig. 1 shows an embodiment in which the filler is constituted by a single sheet with a hollow edge along one side thereof, said edge being obtained by folding and securing to the body of the sheet a marginal section thereof;

Fig. 2 is a cross-section through line II-II of Fig. 1;

Fig. 3 shows an embodiment wherein the filler is constituted by two sheets connected with each other by means of a connecting strip, said sheets forming together, if desired, a pocket, while the hollow edge of the filler is formed by said connecting strip;

Fig. 4 is a cross-section through line IVIV of Fig. 3;

Fig. 5 shows an embodiment wherein the filler is constituted partly by two comparatively narrow strips of cardboard or the like, which are secured together by a connecting strip, and partly by a piece of fabric or the like secured to said narrow cardboard strips, the hollow 2 edge in which filler is similar to that illustrated in Figs. 3 and 4;

Fig. 6 is a cross-section through line VI.-.VI of Fig. 5;

Fig. 7 illustrates an embodiment wherein a filler ac cording to the invention is adapted to be inserted in a. stringing mechanism cooperating with two. series of open: rngs;

Fig. 8 shows a further embodiment wherein the resil ient Wire is replaced by two interconnected adjacent wires of which one is straight and the other is incurved in regis.-. ter with the stringing points to form loops; and

Fig. 9 shows a file with a multiple ring mechanism as: sociated with my improved fillers.

Referring to the drawings: Figs. 1, 3 and 5 designate respectively the upper halves of the fillers before the formation of the hollow edge and the lower halves of the same fillers after the formation of the said hollow edge. In the embodiment illustrated, the tiller constituted by a single sheet 1 is perforated along its left hand side, the perforations 2 being separated by distances equal to the distances between the stringing members of the files, that are not illustrated. The marginal section of the filler sheet 3 extending symmetrically with reference tov the common medial or crease line of the perforations 2, is coated on its upper side with glue, preferably dry glue. A thin wire 4 of resilient steel is laid over the gluedside of the marginal section of the filler sheet in register with said medial or crease line and finally, said marginal sec: tion is folded over said wire in a manner such that the, two longitudinal elements of the section cover each other and are glued together through their glued surfaces with the wire protruding through the outer edges of the perforations.

The stringing holes 2 obtained after the folding of the edge 3 open now freely outwardly along the line of fold and are limited on their outside, along the outline of the folded hollow edge 5 thus obtained, by the wire 4 that is now located inside said hollow edge 3 and extends throughout the length of the edge.

Instead of securing the folded edge 3 on the filler through gluing, it is possible also to secure said edge by sewing, stitching or the like, or else it is possible to weld the fillers when these are made of weldable synthetic material.

In the embodiment illustrated in Fig. 3, two sheets 1, l have their inner edges 1a, 1a slightly spaced from each other, said sheets being secured together by means of a folded back strip the upper surface of which is provided with dry glue, which surface is laid on the corresponding back surfaces of said sheets. The stringing perforations 2 are produced by means of a perforator after a preliminary folding or creasing of the two already interconnected sheets 1, 1. After opening again the two sheets 1, 1' forming the elements of the complete filler, the wire 4' is laid in the space provided between the cooperating edges 1a, 1a, i. e. over the glued strip 6 covering said edges on the outside thereof and said wire is then urged against said strip so as to adhere to the latter. After further folding of the two elements 1, 1, the wire 4' is definitely secured to said halves by means of a blunt blade urged against the outside of said elements and moves over same alternatingly in either direction and there is obtained the folded double sheet shown in the lower half of Fig. 3.

The embodiment illustrated in Fig. 5 corresponds to that of Fig. 3, in that it comprises the wire 4" similar to wire 4 within the glued strip 6', similar to strip 6, with the difference however that the two sheets forming part of the filler are constituted by comparatively narrow strips 7, 7', of cardboard or the like material. Between these two strips may be secured subsequently a sample of canvas 8 or the like material, e. g., forming the other part of the filler, by stapling or stitching at 9. This embodi- Patented Sept. 11, 1956..

ment lends itself to the securing of heavier plural filler sheets such as canvas constituting display samples and requiring heavier securing means such as the aforesaid cardboard stn'ps.

The arrangement shown in Fig. 7 is similar to that shown in Fig. l, but in this case the stringing arrangement is provided with only two series of members, in which case the perforated edge extends only over the medial or lower part of the filler instead of throughout its length as in the case of a mechanism including a larger number of series of rings or the like members in the said part. 7

Fig. 8 difiers from the above-described embodiments in that the resilient wire is duplicated, i. e. it is constituted by two elementary adjacent wires ta-4b which are soldered or welded together and of which the first wire is rectilinear while the second Wire is bent in register with the locations of the stringing rings so as to form at each of said locations a rectangular loop or stringing opening 10 for instance, which loop or opening is closed on one side by the wide 4a and on the three other sides by the bent wire 41). Such an embodiment has in particular the advantage that the stringing members of the stringing mechanism engage now only metal parts and this arrangement prevents any damage to the fillers made of paper, synthetic material or the like while they are being turned over.

Fig. 9 which is a cross-section of a file provided with a multiple ring filing mechanism associated with fillers executed in accordance with my invention, shows clearly that the projecting edge of the fillers is reduced to a mini mum, which is hardly larger than the diameter of the wire 4, i. e. generally about & of a millimeter. The

figure shows furthermore that when the fillers are being turned over, the corresponding wires 4 slide over the rings of the mechanism and that the tractional stress exerted outwardly on any filler is absorbed by the resistance of the corresponding wire and of the hollow edge enclosing said wire.

The above-disclosed embodiments have been given solely by way of examples and the shape, size and details thereof may be modified in accordance with requirements without modifying the principle underlying the invention as defined in the accompanying claim.

What I claim is:

A filler for loose-leaf binders consisting of two sheets in adjacency with all edges in alignment, a medially creased strip having an internal space therein and glued internally to the two outwardly lying surfaces of the sheets along one edge thereof, said strip and sheets having spaced openings therethrough along said specified edge,.a wire extending longitudinally in the space within the creased strip and visible through all of the aforesaid openings, and another wire also extending longitudinally in the space within the creased strip and in adjacency to the first wire, said last named wire having loop portions protruding through the said openings, whereby the rings of the hinders are received in said loops between both wires, said wires having their portions lying in adjacency welded together.

References Cited in the file of this patent UNITED STATES PATENTS 736,339 Akass Aug. 18, 1903 1,142,021 Chambers June 8, 1915

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