Books – strips – and leaves – Book or leaf holder – Cooperating with leaf fold
Patent
1990-02-12
1992-06-09
Bell, Paul A.
Books, strips, and leaves
Book or leaf holder
Cooperating with leaf fold
281 48, 281 49, B42D 318
Patent
active
051200759
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to binders, and is particularly concerned with binders intended to contain a plurality of magazines or the like in book form.
Hitherto, binders have been known which comprise two cover boards, a curved spine, and a flat retaining board extending between the cover boards adjacent the spine to form a tunnel therewith. Magazines are held in the binder by being passed under the exposed parts of loops positioned round the retaining board, the loops having a concealed part extending through the tunnel and an exposed part extending back along the length of the retaining board. The loops are of course placed round the retaining board prior to its fixing to the remainder of the binder, and cannot subsequently be removed except by cutting. More importantly, however, additional loops cannot be added to a finished binder, and thus any deficiency in the number of loops makes the entire binder unsaleable.
The object of the present invention is to provide a spine arrangement for a binder of the type described above which can accept additional loops and permit the selective removal and replacement of loops and/or their contents without damage.
According to the present invention, a binder spine comprises a base portion and a lid portion which when closed together form an elongate tubular structure, a plurality of loops being positionable round the lid portion prior to closure of the spine so as to extend longitudinally through the spine and return along the outside of the spine lid portion, the spine base portion being adapted for fixing into a spine region of a binder. The tubular structure may be of rectangular section, or may have one or more curved sides to give, for example, a "D" shape section.
The lid and base portions may be separate components, adapted to be fixed together by, for example, snap-engagement. The lid and base may be formed of identical sections of extruded or moulded plastics material.
Preferably, however, the lid and base portions of the spine are hingedly attached along adjacent longitudinal edges. Most preferably, the hinged lid and base portions are held in their closed position by a resilient engagement between a longitudinal edge of the lid and a longitudinal edge of the base. In a modification of this preferred embodiment, a slot may be formed in the lid so as to extend transversely across the lid from its longitudinal edge opposite the hinge, this slot allowing loops of a second, smaller, size to be held by the spine, these smaller loops extending through the tubular spine from one end, passing out through the slot, and returning along the outside of the spine lid. The spine lid and base are preferably extruded from plastics material, most preferably as an integral extrusion by joining them at a longitudinal hinge line.
The lid and base may be of different plastics materials, integrally co-extruded, to permit the mechanical properties of the lid and base to differ. Most preferably the lid and base are of polyvinyl chloride, and are joined together by a hinge of a different material, the lid base and hinge being simultaneously co-extruded.
As an alternative, the lid or base may be formed from metal strip, or the entire spine may be bent from resilient metal strip.
An embodiment of the invention will now be described in detail, with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of an integrally extruded spine in the open position with one loop fitted;
FIG. 2 is an end view of the spine of FIG. 1 in the closed position;
FIG. 3 is a view similar to FIG. 1 of a further variant of the spine;
FIG. 4 shows a view similar to FIG. 3 of a spine modified to accept loops of more than one size;
FIG. 5 shows a view similar to FIG. 1 of a further variant of the spine assembly; and
FIG. 6 shows a view similar to FIG. 1 of a further variant of the spine assembly.
Referring now to FIGS. 1 and 2, the binder spine illustrated comprises a channel-like body portion 1 having a base 2 and side walls 3 and 4 extending along its length.
Side wall 3 is forme
REFERENCES:
patent: 2960090 (1960-11-01), Shugart
patent: 4243459 (1981-01-01), Lawes
Bell Paul A.
Marshall Cavendish Services Ltd.
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