Books – strips – and leaves – Book – element thereof – or accessory therefor – Binding
Patent
1982-12-22
1985-10-15
Bell, Paul A.
Books, strips, and leaves
Book, element thereof, or accessory therefor
Binding
281 35, 281 36, 412 4, 412 5, B42D 100, B42D 300, B42C 1100
Patent
active
045470006
DESCRIPTION:
BRIEF SUMMARY
The present invention is concerned with a soft-cover book block and in particular with such a soft-cover book block as comprises a book block consisting of sheets, leaves, etc. joined together at their back edges, a soft cover fastened to the book block, as well as a member for fastening the soft cover to the book block so that the spine part of the cover is apart from the back part of the book block. In the present connection, the spine part is understood as meaning, in addition to the spine proper of the cover, also an area that extends partly beyond the folding lines of the spine towards the opening side of the book.
In the prior-art soft-cover book blocks, the book block is usually glued onto the spine of the soft cover over its entire length and width, and in some cases the cover is additionally glued over a certain distance from the back edge of the book block onto the first and last leaf of the book block so as to obtain a stronger fastening between the cover and the book block. The spine of a book made in this way is rather rigid, whereby the book opens itself poorly and is difficult to read. This is why the spine of the book is readily broken, and especially the first and last leaves of the book block tend to be detached when attempts are made to turn the leaves of the book more open by force.
From the Finnish Patent Application No. 791,516, a soft-cover paperback book is known in which a support layer is fastened to the back of the book block and the soft cover is fastened to the book block only at its front and back cover along fastening strips running at the back edges of the first and last leaf of the book block, so that the spine portion of the cover between the fastening strips is loose from the back of the book block. In this prior-art solution, the spine of the soft cover is not fastened to the back of the book block, whereby the spine is not fastened to the leaves of the book block. Instead, in order to join the book block together, a thin, flexible, strong support layer is used, such as a crepe strip, which is fastened to the back of the book block and which does not subtantially prevent opening of the leaves of the book. In this way, a more readily openable soft-cover paperback book has been provided.
As compared with the first-mentioned solution, this second solution, however, involves the drawback that a separate support layer is required to join the book block together, in addition to which the soft cover is fastened to the book block only along narrow fastening strips placed at its front and back cover.
Under these circumstances, the objective of the present invention is to provide a soft-cover book block wherein the soft cover is, by means of a separate fastening member, fastened to the book block so that the spine portion of the cover is apart from the back portion of the block, so that no excessive strains are directed at the book block and especially not at its first and last leaves, but wherein the fastening is, nevertheless, performed substantially over the entire face of the spine portion of the soft cover and the back of the book block so as to achieve a fastening that is of maximum strength but, yet, flexible, between the soft cover and the book block. Thus, by means of the present invention, the advantages present in the two prior-art solutions mentioned above have been obtained without their drawbacks.
It is a further objective of the present invention to provide a method for the manufacture of a soft-cover book block by glueing the soft cover onto the book block by the intermediate of a separate fastening member non-penetrable by glue, so that the spine portion of the cover is apart from the back portion of the book block.
In a preferred embodiment of the invention, the circumference of the elastically flexible sleeve, non-penetrable by glue, functioning as the fastening member, is preferably somewhat larger than twice the width of the back of the book block, so that the sleeve extends a certain distance between the first leaf of the book block and the front cover and be
REFERENCES:
patent: 951436 (1910-03-01), Duryea
patent: 998283 (1911-07-01), Duryea et al.
patent: 3437506 (1969-04-01), Falberg
Bell Paul A.
Ross Taylor J.
LandOfFree
Soft-cover book block and method for the manufacture of same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Soft-cover book block and method for the manufacture of same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft-cover book block and method for the manufacture of same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2431226