Binder device releasably engaging aperture or notch of sheet – Sheet
Patent
1995-02-22
1997-02-04
Han, Frances
Binder device releasably engaging aperture or notch of sheet
Sheet
281 38, 281 36, 281 37, 281 41, B42F 2100
Patent
active
055991289
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a separating means for bound printed works with a tab which projects from a plane of the bound printed works.
BACKGROUND OF THE INVENTION
Separating means of the aforementioned type are generally known and, for example, separating means have been proposed which are fashioned as tabs which can be glued or adhesively secured to book pages and which are attached later using adhesive to one of the outside edges of the book page by the user on certain pages of the book which, for example, must be frequently used. These separating means make it possible, for example, to quickly open a book to a certain page. This can take place with separating means in the form of projecting tabs, for example, using one hand by grasping the book with the fingers of one hand and placing the thumb on the tab. By tilting the book accordingly all pages of the book can be opened up to the tab while the pages behind remain closed.
A disadvantage of this type of separating means resides in the fact that when the tabs are attached later to the book page, the book page can be damaged. Even when using the separating means in the form described above, book pages consisting of very thin paper can be damaged since, when opening the book, considerable forces are exerted on the paper of the book page by the held tab, especially when the pulling action of the tab is exerted at an offset angle.
SUMMARY OF THE INVENTION
The aim underlying the present invention essentially resides in avoiding the above noted disadvantages and to provide a separating means for bound printed works which can be easily operated, in which there is no danger that sensitive book pages can be damaged, and which can be attached later without any great difficulty in the bound printed work such as books, catalogs, computer handbooks and the like.
In accordance with advantageous features of the present invention, a separating means is provided which is in the form of a separating sheet having an inside edge opposite to a tab or tabs, with an inside edge of the separating sheet having a width greater than a width of the tab or tabs and an adhesive material for attachment to an inside of the bound printed works.
On a side of the separating sheet opposite an inside of the book, one or more folds may be provided.
The adhesive material in accordance with the present invention may be in the form of adhesive strips and, it is also possible to provide, on a side of the separating means facing the inside of the book one or more insert tabs.
Advantageously, the separating sheets have markings in the form of marking lines or perforations for enabling an adaptation to different book formats.
The separating sheets may have tabs in different numbers for separating sheets and in different positions.
The separating means according to the invention includes a separate separating sheet which can be glued or adhesively secured into the bound printed work. The separating sheet may be fashioned of a durable paper, a plastic film or a similar pliable material which can be glued or adhesively secured into the space between two pages of the bound printed work without any problems. A tab is attached on one of the outside edges which corresponds to an outside edge of the book, with the tab being dimensioned such that the tab projects out of the format of the bound printed work. On the inside edge of the bound printed work opposite the tab, the separating sheet can be provided with adhesive material so that it can be glued or adhesively secured to the inside of the book with the pages. In this manner, the separating means is permanently attached to the book. The inside edge of the separating sheet opposite the tab is wider than the width of the tab itself so that the forces which occur when the tab is being held and when paging through the book can be uniformly distributed on the inside edge of the book, also by friction on the adjacent book pages over the latter without damaging or tearing out the separating sheet.
Preferably, according to
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patent: 2195646 (1940-04-01), Green
patent: 3324823 (1967-06-01), Peters
patent: 4422672 (1983-12-01), Levi
patent: 4575126 (1986-03-01), Grubbs
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