Mobile binding

The mobile binding consists of two sheets (1 and 2) of cardboard, or similar semi-rigid material, which extend over the whole length of the binding and which are stuck to each other, except at least in the end portions of the spine, and an opening (8) is provided in the inner sheet of cardboard, perpendicular to each of these end portions. The elements holding the magazines consist of clips (9) substantially in a S-form one (9a) of whose end branches is designed to be inserted into the middle of a magazine to be bound (10); the other end branch (9b) is designed to be inserted through one of the openings (8) of the inner sheet of the spine. Each clip (9) is in molded plastic, its central branch (9c) being extended to beyond the portion (9e) where it connects to the first end of branch (9b), by an overlay (9d) in the immediate proximity to the inner sheet.

BACKGROUND OF THE INVENTION 
In bindings, referred to as mobile bindings, which are designed to keep a 
series of magazines assembled together, the latter are generally held in 
position by rods that are inserted into the central fold of each of the 
magazines and whose ends are slipped in the grooves of catches fastened to 
the inside of the spine of the binding. 
However the manufacture of catches is relatively costly and their fastening 
to the spine of the binding somewhat complicated because, for reasons of 
appearance, it is preferable that the means employed to obtain this 
fastening, rivets for example, should not be visible from the outside of 
the back. Moreover, rods have a considerable diameter and increase the 
length of the magazine. 
French Pat. No. 2 439 681 describes a mobile binding consisting of two 
sheets of cardboard, or similar semi-rigid material which extends over the 
whole length of the binding and which are glued to each other, except at 
least in the end portions of the spine, an opening being provided in the 
internal sheet of cardboard, perpendicular to each of these end portions. 
This binding is used with catches in groove form which insert into the 
openings and which house and hold the ends of the assembly rods. This 
binding contains no visible rivets but has the drawback or requiring the 
use of rods. 
French Pat. No. 695 551 describes a mobile binding in which the magazines 
are held by clips formed of a metal wire bent into an S. One of the end 
branches of the clips is secured to a tab fastened to the spine whereas 
its other end branch is designed to be inserted into the centre of a 
magazine to be bound. The binding does not require the use of rods, but 
experience shows that, under the effect of the weight of the magazine, the 
clip tends to tilt over. 
The purpose of this invention is to provide a binding which avoids these 
various drawbacks. 
BRIEF SUMMARY OF THE INVENTION 
The binding according to the invention consists of two sheets of cardboard, 
or similar semi-rigid material, which extend over the whole length of the 
binding and which are glued to each other, except at least in the end 
portions of the spine, an opening being provided in the internal sheet of 
cardboard perpendicular to each of these end portions and is characterized 
in that: the parts holding the magazine consist of more or less S-shaped 
clips one of whose end branches is designed to be inserted in the middle 
of a magazine to be bound, in that the other end branch is adapted to be 
inserted to one of the openings of the internal sheet at the spine, and in 
that the clip is in moulded plastic, its central branch being extended 
beyond the portion where it connects to the first end branch, by an 
overlay in immediate proximity to the said internal sheet.

TICULAR DESCRIPTION OF THE DRAWINGS 
As shown in the drawing, the mobile binding according to the invention 
consists of two sheets 1 and 2, of cardboard or similar semi-rigid 
material, which are superposed and in which folding lines 3 and 4 are 
formed. The outer sheet of cardboard 1 is clad with a decorative sheet 5 
whereas the inner sheet 2 is clad with a flyleaf 6. The two sheets 1 and 2 
are stuck to each other outside lines 3 and 4, but not in their part 7 
between these lines, which has eventually been hot bent and is designed to 
form the spine of the binding. The flyleaf 6 extends over the whole width 
of the binding and the decorative sheet 5 contains folds which cover the 
edges of sheets 1 and 2. 
A more or less rectangular opening 8 is provided in the sheet of cardboard 
2 and in flyleaf 6 which covers it, close to each end of part 7. Clips 9, 
in moulded plastic, can be inserted into these openings 8. 
Each clip 9 is approximately in S-form. One 9a of its outer branches is 
relatively thin and lies in the plane of the clip; its end is pointed. Its 
other outer branch 9b is also relatively thin, but it lies in a plane 
perpendicular to that of the clip, as can be seen in FIG. 3; it is pointed 
and its thickness decreases from point 9e where it connects to central 
branch 9c, to its end. Its central branch 9c is extended by an overlay 9d, 
beyond connection point 9e. 
Each opening 8 has a height a little greater than that of part 9e of the 
clip. 
To install a clip 9, simply insert its branch 9b through one of the 
openings 8, for example upper opening 8, between the two sheets 1 and 2, 
and apply part 9e against the lower edge of the opening (see FIG. 2). 
To fasten a magazine 10 in a binding, install a clip 9 in each of the 
openings 8 and insert the branches 9a of the two clips in the centre of 
the magazine 10. The branches 9a which are thin and lie in the plane of 
the magazine increase the thickness of this magazine very little. The 
overlays 9d which are in the immediate vicinity of the inner sheet 2, 
prevent the clips from tilting over.