GB2203698A

GB2203698A - Binder

Info

Publication number: GB2203698A
Application number: GB08709614A
Authority: GB
Inventors: Takao Kakuta
Original assignee: Mitsubishi Pencil Co Ltd
Current assignee: Mitsubishi Pencil Co Ltd
Priority date: 1987-04-23
Filing date: 1987-04-23
Publication date: 1988-10-26
Also published as: DE3716978A1; GB8709614D0

Description

ROE "BINDER" This invention relates to a binder and more particularly a

binder having engaging means for engaging the inside of the folded base of a book to be bound.

One conventional binder includes detachable hair pin- shaped connectors attached directly to both the upper and lower ends of the inside of the binder spine in its engaging means. In use, the connectors are simultaneously engaged within both the upper and lower ends of the folded base of a book to be bound. With such a binder, special fittings are necessary to prevent accidental removal of the hair pin-shaped connectors and also to firmly secure the connectors. The separate connectors are difficult to handle and easily lost.

Another conventional binder has engaging means comprising one or more long rods bridging the upper end and the lower end of the inside of the back portion or spine of the binder.

Because the rods are long and thin, they are weak and tend to bend. For this reason and other reasons, the-le is a risk of damaging a book bound in such a binder.

The binder is also complicated to used.

One object of this invention is to avoid the aforementioned drawbacks of the conventional binders and to provide a binder that is of simple construction and easy to use.

Another object of this invention is to provide an improved binder in which a book can be effectively bound without any looseness.

According to the present invention a binder having a back or spine portion, a holder base at each end of the back portion and extending inwardly therefrom, and engaging means projecting from confronting inner surfaces of the holder bases for engagement, in use, within opposite ends of the folded base of the book to be bound wherein at least one of the holder bases is movable between an engaged and a disengaged portion of the engaging means.

Also, according to another aspect of the invention a binder comprising a back portion or spine, holder bases projecting inwardly from the inside of both upper and.lower ends of the back portion and a plurality of engaging projections in the form of blades arranged at intervals along and projecting at two or more different lengths from each of the confronting inner surfaces-of the holder bases for engagement in use, inside the folded bases of the books to be bound.

The above and related objects and features of the invention will be apparent from the following description by way of example, of embodiments of the invention.

The description refers to the accompanying drawings in which:

Figure 1 is a perspective view of one embodiment of the binder according to the present invention; Figure 2 is a perspective view showing the binder of Figure 1; Figure 3 is a'perspective view showing part of another embodiment of the binder according to the present invention; Figures 4A to 4C are side and front views of a variety of examples of'engaging pistons employed in the binder of this invention; Figure 5 is an enlarged perspective view of a part of the binder of the invention; and Figure 6 is a front view illustrating how the binder of Figure 5 is used.

The binder of Figures 1 and 2, has covers a and 1', a back portion 2 and holder bases 3 and 3' respectively projecting inwardly from both the inside of the upper and lower ends of the back portion or spine 2. Engaging means 9 for engaging a book to be bound comprises engaging pins 5, 51, 511,... 6, 61, 611... on the holder bases 3 and 3', at least one of which is movable. The pins 5, 51, 511,... and 6, 61, W'... stand at a predetermined interval in pairs on the confronting inner surfaces 4 and 4' of the respective holder bases 3 and 3'. The lower holder base 3' is fixedly secured, but the upper holder base has a leaf spring piece 7 extending therefrom in the same direction as the engaging pins 5, 51, 511, the leaf spring piece 7 being inserted into a hole 8 formed at the upper end of the back portion 2 inside the binder, so that the holder base 3 can be withdrawn to an elevated position. Stopper plates 13 are provided on the lower holder base 3'. In a modified embodiment, the movable holder base may be formed at the S.

lower end instead of the upper end or both the upper and lower holder bases may be movable.

Use of the binder shown in Figure 1, is illustrated in Figure 2 from which it will be seen that the lower end of the folded base 11 of a book 10 is fitted over the pin 61 of the holder base 31, the movable holder base 3 is then moved upwardly and thereafter downwardly, such that the pin 51 engages within the upper end of the folded base 11 of the book 10. In this manner the book can be bound in the binder. To remove book 10 from the binder, the reverse sequence of the above opertions is carried out.

Figure 3 shows another embodiment of binder in which the leaf spring piece 7 of the movable holder base 3 is bent to form up'per and lower pieces 7a and 7b, and a padding member 12 is secured to the surface of the side of the lower piece 7b such that the leaf spring piece is movable with padding member 12 and the outside surface of the lower piece 7b is always in contact with the inside surface of the hole 8. This is even more effective in avoiding slackness of the holder base 3 than the use of the leaf spring piece alone (see Figure 1).

it is noted that the engaging pins 5, 51, 511, may be rockably moved around the bent part in the same shape as the holder base 3 shown in Vigure 3, though not shown.

Q 4_ It is preferred in this case of the holder base thus constructed to form in position a projection for preventing slackness of the holder base in the hole 8.

Figures 4A to 4C show side and front views of engaging pins of various types. Figure 4A corresponds to the shape shown in Figures 3 to 5, Figures 4B shows a U-shaped engaging pine 5a, and Figure 4C shows an engaging pin 5B so formed in a converging piece.

As in the embodiment of Figures 1 and 2, the binder has engaging means for engaging inside the folded base 11 of a book 10 to be bound. Holder bases 3, 31, at least one of which is movable to an elevated position, project inwardly from both upper and lower ends of the back portion 2 inside the binder. Pairs of engaging pins 5, 51, 5" and 6, 6' and 6",.. project from both confronting inner surfaces 4 and 41 of the respective holder bases 3 and 31, wherein the movable holder base 3 is elevationally moved, the engaging pins 5, 5' ad 5",...

6, 61, 611... formed in pairs are thus engaged to both the upper and lower ends of the folder base 11 at the inside of the book 10, hereby binding the book. Since the engaging pins 5, 51, 511,... and 6, 61, 611...

are not handled directly in binding the book 10 but move with the movable holder base 3, the binder is extremely simple to use as compared with conventional binders.

Further, the binder of this invention is of simple construction and effectivply eliminate the looseness of binding the book 10.

Figure 5 shows another embodiment of the binder and Figure 6 illustrates how the binder of Figure 5 is used.

A plurality of engaging blades 15, 15,... project from the inner surface 4 of the holder base, but are not all of the same length. In the illustrated embodiment alternate blades 15, 15 are of the same length but this is not essential. The blades 15, 15 may be of several different lengths and in an irrregular arrangement or all may be of different lengths. Further the engaging baldes may also be arbitrarily aligned. The shape of the blades 15 shown in Figure 5 is a sector, in fact, a quadrant, of a circle but the blades 15 may be semi circular, rodlike, or of any other shape or combination of shapes only in such a manner that the projecting lengths may be various.

Such blades may be provided on only one holder base, or on both the upper and lower holder bases.

In use of the embodiment of Figures 5 and 6, books 24, 25, 26 can be bound in the same manner as with a conventional binder. However, only the longest blades 15 initially contact the books 24, 25, 26 by pushing the holder base 3, and then start inserting into the books. In the case, relatively large resistance is produced at the engaging blades due to the static frictional resistance of the blades at the initial contactng time, but when the engaging blades start inserting into books, the dynamic frictional resistance is produced at the blades and accordingly becomes relatively small. The shorter engaging blades are then contacted with the books in this state. Therefore, it can weaken the static frictional resistance of the engaging blades as compared with the case that all the engaging blades are simultaneously contacted with the books, thereby smoothing the insertion of the engaging blades into the books.

In accordance with this embodiment of the invention, a binder comprises holder bases 3, 3' that project inwardly from the inside of both the upper and lower ends of the back portion or spine, and a plurality of engaging blades 15, 15... that project at a predetermined interval from both confronting inner surfaces 4, 41 of the respective holder bases 3, 31 for engagement, in use, inside the folded bases of the books 24, 25, 26 to be bound. The blades 15, 15... are of different lengths such that blades 15, 15.. contact and enter the book in sequence (in stages) according to their length whereby the static and dynamic frictional resistances can be dispersed and weakened as compared with the case that all the engaging blades are heretofore simultaneously contacted with the books and are then simultaneously inserted into the books. Books 24, 25, 26 can be thus bound smoothly with the application of only a light force. This avoids the risk of damaging books particularly when a number of books are to be bound together in one binder.

a "I

Claims

2 1. A binder having a back or spine portion, a holder base at each end of the back portion and extending inwardly therefrom, and engaging means projecting from confronting inner surfaces of the holder bases for engagement, in use, within opposite ends of the folded base ofa book to be bound, wherein at least one of the holder bases is movable between an engaged and a disengaged position of the engaging means.
2. A binder according to claim I wherein the engaging means on one holder base are aligned with the engaging means on the other holder base.
3. A binder comprising means for engaging with the inside of the folded base of a book to be bound, holder bases at least one of which is elevationally movable and in which the engaging means are inwardly projected from both upper and lower ends of the back portion at the inside of the binder, and engaging projections stood in pairs from both confronting inner surfaces of the respective holder bases, wherein the movable holder base is elevationally moved, the engaging projections formed in pairs are thus engaged to both the upper and lower ends of the folder base at the inside of the book, thereby binding the book.
4. A binder according to claim 1 or claim 3, wherein the movable holder base comprises a leaf spring piece 1 -g- extending therefrom in the same direction as the engaging projections, and slidably received in a hole formed at the end corresponding to the inside of the back portion of said binder..
5. A binder according to claim 4, wherein the leaf spring has upper and lower portions inclined to one another, and having a padding member secured to one side of the lower portion, the padding portion and the lower portion together being slidable. in the hole.
6. A binder according to any one of claims lto 5 wherein the engaging projections are pins.
7. A binder according to any one of claims 1 to 5 wherein the engaging projections are rods bent into substantially a U-shape.
8. A binder according to claims 1 to 5, wherein the engaging pin is formed in a converging piece.
9. A binder comprising a back portion or spine, holder bases projecting inwardly from the inside of both upper and lower ends of the back portion, and a plurality of engaging projections in the form of blades arranged at intervals along and projecting at two or more different lengths from each of the confronting inner surfaces of the holder bases for engagement, in use, inside the folded bases of the books to be bound.
10. A binder according to claim 1 or claim 9 wherein alternate engaging projections are of the same length.
11. A binder according to claim 1 or claim 9, wherein the engaging projections are projected irregularly.
12. A binder according to claim 1 or claim 9, wherein the engaging projections all have different lengths.
13. A binder according to claim 1 or claim 9, wherein the engaging projections comprise several sets of projections of different lengths.
14. A binder according to claim 9, wherein the shape of the engaging blades is sector of a circle.
15. A binder according to claim 9, wherein the engaging blades are semicircular, rod-like or a combination of said shapes in such a manner that the projecting lengths thereof are various.
16. A binder constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.

Publibhed 1988 at The Patent Office, State House, 66MI High Holborn, London W01R 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BRS 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent. Con. 1/87.

tswes i3ranciL st Marv crav. orniniton. Kent BR5 3RD. Printed bv Multinlex techn1aues ltd- St Marw Grav. Kent. Can- 1/87.