CA1263421A - Index tabbing system - Google Patents
Index tabbing systemInfo
- Publication number
- CA1263421A CA1263421A CA000544695A CA544695A CA1263421A CA 1263421 A CA1263421 A CA 1263421A CA 000544695 A CA000544695 A CA 000544695A CA 544695 A CA544695 A CA 544695A CA 1263421 A CA1263421 A CA 1263421A
- Authority
- CA
- Canada
- Prior art keywords
- book
- assembly
- panel
- panels
- inserts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
- B42F21/00—Indexing means; Indexing tabs or protectors therefor
- B42F21/02—Tabs integral with sheets, papers, cards, or suspension files
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D1/00—Books or other bound products
- B42D1/003—Books or other bound products characterised by shape or material of the sheets
- B42D1/006—Books or other bound products characterised by shape or material of the sheets with at least one foldable or folded sheet
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Sheet Holders (AREA)
Abstract
Title: INDEX TABBING SYSTEM
ABSTRACT OF THE DISCLOSURE
A method of making a book having index tabs in which the tabs are formed by inserts that are interspersed at appropriate locations with sheets for forming the pages of the book, during the book binding operation. Each insert comprises a six-page signature having first and second panels that are bound in with the sheets, and a third panel that carries the tab and is folded inwardly between the first two panels during the binding operation. After binding has been completed and the book has been trimmed, the panels that carry the tabs are folded out so that the tabs project from the trimmed outer edge of the book.
ABSTRACT OF THE DISCLOSURE
A method of making a book having index tabs in which the tabs are formed by inserts that are interspersed at appropriate locations with sheets for forming the pages of the book, during the book binding operation. Each insert comprises a six-page signature having first and second panels that are bound in with the sheets, and a third panel that carries the tab and is folded inwardly between the first two panels during the binding operation. After binding has been completed and the book has been trimmed, the panels that carry the tabs are folded out so that the tabs project from the trimmed outer edge of the book.
Description
~L2~3421 EIELD OF T~E INVENTION
This invention relates generally to the art of book binding, and is concerned more particularly with the provision of index tabs in books. Specifically, the invention provides a book having a series of index tabs, and a method of making such a book.
BACKGROUND OF TH~ INVENTION
Traditionally, index tabs have been used only in ring binders or other loose leaf books where sheets specially shaped to provide tabs can be easily inserted at appropriate locations between the other sheets that make up the book. This is because the tab sheets cannot be gathered on modern book binding equipment and must be inserted manually. Also, the final trimming of the edges of the sheets that forms part of a normal book binding operation cannot be accomplished without cutting off projecting tabs.
Expensive books such as dictionaries have been provided with finger or thumb index cut-outs that allow alphabetic indicators to appear at the outer edge of the book. These cut-outs are formed by manually cutting the pages after the book has been bound, which is a very expensive operation.
DESCRIPTION OF THE PRIOR ART
. . . _ _ .
Canadian Patent No. 261,827 issued June 15, 1926 to Arthur Watson Pimm and Joseph Husband discloses a book in which certain pages have tab-forming panels that are folded into the book so that they will not be cut off during h~ 3 trimming. The intention that the user will subsequently turn out the folded panels to expose the tabs. As a practical matter, this proposal is believed unsuitable for modern book binding equipment. The folded in panels on which the tabs are formed will tend to fly out as the pages travel through the equipment, with the result that the tabs will be cut off during the final trimming process.
Canadian Patent No. 1,105,958 is of interest in disclosing an alternative proposal for providing tabs. The intention is to permit a person reading a book or other publication to mark a page for future reference by tearing along a severence line and folding a section of the page to form a tab.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a book having a series of index tabs, in which the book is designed so that can be produced using conventional modern book binding equipment. A method of making such a book is also provided.
The book provided by the invention comprises a bound and trimmed assembly formed from a plurality of sheets and interspersed tab-forming inserts, in which the assembly has a spine and a trimmed outer edge opposite the spine.
Each insert is or was initially in the form of a separate signature unit comprising first, second and third panels, the first and second panels meeting at a first fold line extending along the spine of the assembly and the third panel being foldable inwardly between the first and second `t`, '~ ~2 ~
panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer trimmed edge of the assembly. The third panel has a free outer edge formed with a projecting index tab and is dimensioned so that the index tab projects from the trimmed outer edge of the bound assembly when the third panel is folded outwardly to lie generally co-planar with the second panel.
The method of the invention involves gathering together the assembly of sheets and interspersed tab-forming inserts with the third panels of the inserts folded inwardly between the first and second panels so that each signature unit is a six-page unit, binding the sheets and inserts together at a spine, and trimming the exposed edges of the sheets and panels to form the book.
In the context of the invention, the term "signature" has its normal meaning as used in the trade, namely a sheet which when folded becomes a unit of the book.
The unit is referred to as "six-page" unit when the third panel is folded between the first and second panels, since each face of each panel is considered to be a "page". When the third panel has been folded out so as to lie generally co-planar with the second panel the unit becomes a four-page signature unit. Typically, the faces of the panels will be appropriately printed so that, when the third panel has been folded out to make the index tab is visible, the printed material carried by the panels will be appropriately presented to a person turning the pages of the book. The signature units can be made of the same paper stock as the other sheets of the book or can be made of slightly heavier stock. For example, the inserts could be made of heavier stock and appropriately colour printed to provide, say, advertising inserts in a catalogue or other book in which the other pages might be printed in black and white.
In any event, the fact that the signature unit is configured as a six-page unit (i.e. with the third panel folded in when the book is being made) has been found to prevent the third panel accidentally flying out (i.e. being unfolded) as the signature unit passes through the book binding equipment. In other words, by providing a signature unit of the form defined above, the tab is in effect protected against being trimmed off.
The other sheets that form the remaining pages of the book will normally also be in the form of signatures;
that is, muliple sheets folded to form a unit of the book.
The inserts can then be simply interposed with the other signatures in a stack to form the assembly to be bound. By changing the number of sheets in each signature and positioning inserts at appropriate locations between the signatures, tabs can be located by almost any location in the book.
Preferably, the widths of the second and third panels of the insert signatures are selected so that the second fold lines (between the second and third panels) of the respective inserts are staggered throughout the book. In a book having a relatively large number of inserts, this results in the book having a more uniform thickness and more stability, permitting the book to be accurately trimmed at high speeds.
BRIEF DESCRIPTION OF THE DRAWINGS
. . _ _ . .
In order that the invention may be more clearly understood, reference will now be made to the accompanying drawings which illustrate a particular preferred embodiment of the invention by way of example, and in which:
Fig. 1 is a perspective view of a book provided with a series of index tabs in accordance with the invention;
Fig. 2 is a sectional view taken on a horizontal plane through the book as shown in Fig. l;
Fig. 3 is a perspective view of one of the inserts used in the book of Figs. 1 and 2;
Fig. 4 shows the insert of Fig. 3 positioned in the book with the panel that carries the tab folded inwardly; and, Fig. 5 is a view similar to Fig. 4 showing the panel folded out.
DESCRIPTION OF T~E PREFERRED EMBODIMENT
. . . _ Referring first to Fig. 1, a book is indicated generally by reference numeral 20 and is provided with a series of index tabs individually denoted by reference numeral 22. In this particular illustration, the book is shown as having a cover 24 of a slightly heavier paper stock than the sheets that form the pages of the book.
7,~
-- 7 ~
The pages comprise a bound and trimmed assembly of sheets and interspersed tab-forming inserts that is gener-ally denoted by reference numeral 26. As best seen in Fig.
This invention relates generally to the art of book binding, and is concerned more particularly with the provision of index tabs in books. Specifically, the invention provides a book having a series of index tabs, and a method of making such a book.
BACKGROUND OF TH~ INVENTION
Traditionally, index tabs have been used only in ring binders or other loose leaf books where sheets specially shaped to provide tabs can be easily inserted at appropriate locations between the other sheets that make up the book. This is because the tab sheets cannot be gathered on modern book binding equipment and must be inserted manually. Also, the final trimming of the edges of the sheets that forms part of a normal book binding operation cannot be accomplished without cutting off projecting tabs.
Expensive books such as dictionaries have been provided with finger or thumb index cut-outs that allow alphabetic indicators to appear at the outer edge of the book. These cut-outs are formed by manually cutting the pages after the book has been bound, which is a very expensive operation.
DESCRIPTION OF THE PRIOR ART
. . . _ _ .
Canadian Patent No. 261,827 issued June 15, 1926 to Arthur Watson Pimm and Joseph Husband discloses a book in which certain pages have tab-forming panels that are folded into the book so that they will not be cut off during h~ 3 trimming. The intention that the user will subsequently turn out the folded panels to expose the tabs. As a practical matter, this proposal is believed unsuitable for modern book binding equipment. The folded in panels on which the tabs are formed will tend to fly out as the pages travel through the equipment, with the result that the tabs will be cut off during the final trimming process.
Canadian Patent No. 1,105,958 is of interest in disclosing an alternative proposal for providing tabs. The intention is to permit a person reading a book or other publication to mark a page for future reference by tearing along a severence line and folding a section of the page to form a tab.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a book having a series of index tabs, in which the book is designed so that can be produced using conventional modern book binding equipment. A method of making such a book is also provided.
The book provided by the invention comprises a bound and trimmed assembly formed from a plurality of sheets and interspersed tab-forming inserts, in which the assembly has a spine and a trimmed outer edge opposite the spine.
Each insert is or was initially in the form of a separate signature unit comprising first, second and third panels, the first and second panels meeting at a first fold line extending along the spine of the assembly and the third panel being foldable inwardly between the first and second `t`, '~ ~2 ~
panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer trimmed edge of the assembly. The third panel has a free outer edge formed with a projecting index tab and is dimensioned so that the index tab projects from the trimmed outer edge of the bound assembly when the third panel is folded outwardly to lie generally co-planar with the second panel.
The method of the invention involves gathering together the assembly of sheets and interspersed tab-forming inserts with the third panels of the inserts folded inwardly between the first and second panels so that each signature unit is a six-page unit, binding the sheets and inserts together at a spine, and trimming the exposed edges of the sheets and panels to form the book.
In the context of the invention, the term "signature" has its normal meaning as used in the trade, namely a sheet which when folded becomes a unit of the book.
The unit is referred to as "six-page" unit when the third panel is folded between the first and second panels, since each face of each panel is considered to be a "page". When the third panel has been folded out so as to lie generally co-planar with the second panel the unit becomes a four-page signature unit. Typically, the faces of the panels will be appropriately printed so that, when the third panel has been folded out to make the index tab is visible, the printed material carried by the panels will be appropriately presented to a person turning the pages of the book. The signature units can be made of the same paper stock as the other sheets of the book or can be made of slightly heavier stock. For example, the inserts could be made of heavier stock and appropriately colour printed to provide, say, advertising inserts in a catalogue or other book in which the other pages might be printed in black and white.
In any event, the fact that the signature unit is configured as a six-page unit (i.e. with the third panel folded in when the book is being made) has been found to prevent the third panel accidentally flying out (i.e. being unfolded) as the signature unit passes through the book binding equipment. In other words, by providing a signature unit of the form defined above, the tab is in effect protected against being trimmed off.
The other sheets that form the remaining pages of the book will normally also be in the form of signatures;
that is, muliple sheets folded to form a unit of the book.
The inserts can then be simply interposed with the other signatures in a stack to form the assembly to be bound. By changing the number of sheets in each signature and positioning inserts at appropriate locations between the signatures, tabs can be located by almost any location in the book.
Preferably, the widths of the second and third panels of the insert signatures are selected so that the second fold lines (between the second and third panels) of the respective inserts are staggered throughout the book. In a book having a relatively large number of inserts, this results in the book having a more uniform thickness and more stability, permitting the book to be accurately trimmed at high speeds.
BRIEF DESCRIPTION OF THE DRAWINGS
. . _ _ . .
In order that the invention may be more clearly understood, reference will now be made to the accompanying drawings which illustrate a particular preferred embodiment of the invention by way of example, and in which:
Fig. 1 is a perspective view of a book provided with a series of index tabs in accordance with the invention;
Fig. 2 is a sectional view taken on a horizontal plane through the book as shown in Fig. l;
Fig. 3 is a perspective view of one of the inserts used in the book of Figs. 1 and 2;
Fig. 4 shows the insert of Fig. 3 positioned in the book with the panel that carries the tab folded inwardly; and, Fig. 5 is a view similar to Fig. 4 showing the panel folded out.
DESCRIPTION OF T~E PREFERRED EMBODIMENT
. . . _ Referring first to Fig. 1, a book is indicated generally by reference numeral 20 and is provided with a series of index tabs individually denoted by reference numeral 22. In this particular illustration, the book is shown as having a cover 24 of a slightly heavier paper stock than the sheets that form the pages of the book.
7,~
-- 7 ~
The pages comprise a bound and trimmed assembly of sheets and interspersed tab-forming inserts that is gener-ally denoted by reference numeral 26. As best seen in Fig.
2, the inserts are individually denoted 28. For clarity of illustration, only three inserts have been shown although the book in fact has six inserts corresponding to the six tabs 22 (Fig. l). The sheets are shown in the form of signatures 30, each comprising a series of folded single sheets. Fig. 2 illustrates the fact that the individual signatures 30 can contain different numbers of sheets and that different numbers of signatures can be positioned between each two adjacent inserts 28. The number of sheets in each signature 30 and the disposition of the inserts 28 is chosen so that the inserts (and hence the tabs 22) appear at the appropriate locations throughout the book.
The assembled signatures and inserts are bound together as appropriate depending on the particular method of binding employed. For example, the signatures and inserts may be secured together by gluing or stitching. In any event, the end result is that the assembly 26 has a spine 32. The assembly is then secured within the outer cover 24 in conventional fashion, for example by gluing. The final step in the book manufacturing operation is to trim the outer edge of the book opposite the spine (denoted 34) and the top and bottom edges 36 and 38 (see Fig. l). In this embodiment, the cover 24 is trimmed at the same time. In Fig. 2 a trim line for the outer edge 34 is indicated at 40.
~ 12t,~
One of the inserts 28 is shown individually in Fig.
The assembled signatures and inserts are bound together as appropriate depending on the particular method of binding employed. For example, the signatures and inserts may be secured together by gluing or stitching. In any event, the end result is that the assembly 26 has a spine 32. The assembly is then secured within the outer cover 24 in conventional fashion, for example by gluing. The final step in the book manufacturing operation is to trim the outer edge of the book opposite the spine (denoted 34) and the top and bottom edges 36 and 38 (see Fig. l). In this embodiment, the cover 24 is trimmed at the same time. In Fig. 2 a trim line for the outer edge 34 is indicated at 40.
~ 12t,~
One of the inserts 28 is shown individually in Fig.
3 and it will be seen that the insert is made up of first, second and third panels denoted respectively 42, 44 and 46.
The first and second panels meet at a first fold line 48 that extends along the spine 32 in the assembly of signa-tures and inserts (Fig. 2). The third panel 46 is foldable inwardly between the first and second panels 42 and 44 respectively about a second fold line 50 which adjoins the second panel 44 and is diposed parallel to the first fold line 48 but disposed so that it is spaced inwardly from the outer trimmed edge of the assembly 26 in the assembly of inserts and signatures. In this embodiment, the fold lines 50 and 48 are formed by scoring the paper stock from which the insert is made. Scoring is preferred since it provides an accurate and well-defined fold line, although it is not absolutely essential. In any event, the third panel 46 has a free outer edge 52 formed with a projecting index tab 54.
Panel 46 is dimensioned so that the index tab projects from the trimmed outer edge 34 of the bound assembly when the panel 46 is folded outwardly to lie generally co-planar with the second panel 44 as shown in Fig. 5.
In manufacturing the book, the inserts 28 are posi-tioned with their third panels 46 folded inwardly as shown in Fig. 2 so that the tab 54 is protected between the first and second panels 42 and 44 and is not trimmed off in the final trimming operation as discussed previously. The fact that the tab and the third panel 46 from which it extends are located between the other two panels prevents the third panel being inadvertently drawn out into a projecting position as the insert travels through the book binding equipment.
The customer receives the finished book with the third panels and tabs of all of the inserts folded inwardly as shown in Fig. 4, in the case of one of the inserts. The user then folds out the panels and tabs in using the book so that they appear as shown in Fig. 5.
Fig. 2 illustrates the fact that the second and third panels (as the panels 44 and 46 in Fig. 3) of the respective inserts are of varying widths throughout the book so that the second fold lines (as fold line 50 in Fig. 3) are staggered with respect to one another. In the case of a book having only a few inserts, staggering of the fold lines in this way may not be significant. However, where there are a number of inserts, staggering is extremely important (particularly where the inserts are made of thick stock) since it results in the book having a more uniform thickness that would otherwise be possible, permitting greater accuracy in trimming at high speeds.
Preferably, the first panel (42) of the insert 28 should have the exact same dimensions as the dimensions of the signatures 30 with which it is to be gathered. That panel will then be trimmed down to the final size along with the signatures themselves.
The combined width of the second and third panels (dimensions Wl + W2 in Fig. 3) should be slightly less than ~ 26;3~21 the corresponding finished dimension of the book itself to guard against any small inaccuracies in binding that might otherwise cause the finished edge adjacent the tab 54 to protrude beyond the edges of the other pages of the book. In other words, that edge should be set back slightly rather than risking that it might protrude. For example, in a book having an approximate overall size of 11" (height) by 8"
(width) a setback of 1/16" would be appropriate. If the book is to be sewn casebound the combined width of the two panels would simply be selected to be, say, 1/16" less than the finsished book trim size. On the other hand, if the book is to be perfect bound, the width of the two panels would amount to 5/16" less than the finished book trim size. This allows for approximately 1/4" to be removed by the grinding process that is part of the overall binding operation. This results in tne signatures being in effect separated into single sheets which are held in place by glue.
It will be appreciated by a person skilled in the art that the invention allows almost infinite variation in the number and arrangement of the tabs. For example, for a book of approximately 11" x 8" in size and 1~" in thickness, up to about 24 tabs can be easily incorporated for a perfect bound book. The tabs can be arranged as two "banks" of tabs (i.e. two different staggered series) or as a single bank.
If more than 24 tabs are required, then it may be desirable to make special arrangements to ensure that the tabs are firmedly held by the glue that is used in the binding process.
The tabs can be located before or after any signature in the book because the tab is a self-contained unit that can be gathered mechanically by the book binding equipment. By changing the number of pages in a signature, tabs can be located almost anywhere in the book. For example, the first signature might contain 16 sheets and be followed by a tab which would in turn by followed by any appropriate number of signatures before the next tab. For example, there might be four intervening signatures, the first two of which would contain 32 sheets, the third 16 sheets and the fourth 8 sheets.
It should also be noted that the tab-forming inserts may be wrapped around and/or inserted into other sections of a book mechanically, for example in the case of a saddle stitch book.
In summary, the method provided by the invention allows books to be provided with index tabs at very little additional cost as compared with an equivalent book without index tabs. The books can be manufactured using ordinarily available book binding equipment, operating at normal speeds and without detriment to the final appearance of the book.
Details of the book binding equipment itself have not been given since the equipment itself forms no part of the present invention and in any event will be familiar to a person skilled in the art.
It should finally be noted that the preceding description refers to a particular preferred embodiment of the invention only and that modifications are possible 2~
within the broad scope of the invention. Some of thosemodifications have been indicated previously and others will be apparent to a person skilled in the art. For example, the invention may be applied to books of many different types including law books, product catalogues, telephone books, medical books, dictionaries, and event to leaflets or pamphlets having relatively few pages. Accordingly, the term "book" should be interpreted in its broadest sense as meaning a collection of written, printed or blank sheets fastened together along one edge. The book may or may not have a cover.
The first and second panels meet at a first fold line 48 that extends along the spine 32 in the assembly of signa-tures and inserts (Fig. 2). The third panel 46 is foldable inwardly between the first and second panels 42 and 44 respectively about a second fold line 50 which adjoins the second panel 44 and is diposed parallel to the first fold line 48 but disposed so that it is spaced inwardly from the outer trimmed edge of the assembly 26 in the assembly of inserts and signatures. In this embodiment, the fold lines 50 and 48 are formed by scoring the paper stock from which the insert is made. Scoring is preferred since it provides an accurate and well-defined fold line, although it is not absolutely essential. In any event, the third panel 46 has a free outer edge 52 formed with a projecting index tab 54.
Panel 46 is dimensioned so that the index tab projects from the trimmed outer edge 34 of the bound assembly when the panel 46 is folded outwardly to lie generally co-planar with the second panel 44 as shown in Fig. 5.
In manufacturing the book, the inserts 28 are posi-tioned with their third panels 46 folded inwardly as shown in Fig. 2 so that the tab 54 is protected between the first and second panels 42 and 44 and is not trimmed off in the final trimming operation as discussed previously. The fact that the tab and the third panel 46 from which it extends are located between the other two panels prevents the third panel being inadvertently drawn out into a projecting position as the insert travels through the book binding equipment.
The customer receives the finished book with the third panels and tabs of all of the inserts folded inwardly as shown in Fig. 4, in the case of one of the inserts. The user then folds out the panels and tabs in using the book so that they appear as shown in Fig. 5.
Fig. 2 illustrates the fact that the second and third panels (as the panels 44 and 46 in Fig. 3) of the respective inserts are of varying widths throughout the book so that the second fold lines (as fold line 50 in Fig. 3) are staggered with respect to one another. In the case of a book having only a few inserts, staggering of the fold lines in this way may not be significant. However, where there are a number of inserts, staggering is extremely important (particularly where the inserts are made of thick stock) since it results in the book having a more uniform thickness that would otherwise be possible, permitting greater accuracy in trimming at high speeds.
Preferably, the first panel (42) of the insert 28 should have the exact same dimensions as the dimensions of the signatures 30 with which it is to be gathered. That panel will then be trimmed down to the final size along with the signatures themselves.
The combined width of the second and third panels (dimensions Wl + W2 in Fig. 3) should be slightly less than ~ 26;3~21 the corresponding finished dimension of the book itself to guard against any small inaccuracies in binding that might otherwise cause the finished edge adjacent the tab 54 to protrude beyond the edges of the other pages of the book. In other words, that edge should be set back slightly rather than risking that it might protrude. For example, in a book having an approximate overall size of 11" (height) by 8"
(width) a setback of 1/16" would be appropriate. If the book is to be sewn casebound the combined width of the two panels would simply be selected to be, say, 1/16" less than the finsished book trim size. On the other hand, if the book is to be perfect bound, the width of the two panels would amount to 5/16" less than the finished book trim size. This allows for approximately 1/4" to be removed by the grinding process that is part of the overall binding operation. This results in tne signatures being in effect separated into single sheets which are held in place by glue.
It will be appreciated by a person skilled in the art that the invention allows almost infinite variation in the number and arrangement of the tabs. For example, for a book of approximately 11" x 8" in size and 1~" in thickness, up to about 24 tabs can be easily incorporated for a perfect bound book. The tabs can be arranged as two "banks" of tabs (i.e. two different staggered series) or as a single bank.
If more than 24 tabs are required, then it may be desirable to make special arrangements to ensure that the tabs are firmedly held by the glue that is used in the binding process.
The tabs can be located before or after any signature in the book because the tab is a self-contained unit that can be gathered mechanically by the book binding equipment. By changing the number of pages in a signature, tabs can be located almost anywhere in the book. For example, the first signature might contain 16 sheets and be followed by a tab which would in turn by followed by any appropriate number of signatures before the next tab. For example, there might be four intervening signatures, the first two of which would contain 32 sheets, the third 16 sheets and the fourth 8 sheets.
It should also be noted that the tab-forming inserts may be wrapped around and/or inserted into other sections of a book mechanically, for example in the case of a saddle stitch book.
In summary, the method provided by the invention allows books to be provided with index tabs at very little additional cost as compared with an equivalent book without index tabs. The books can be manufactured using ordinarily available book binding equipment, operating at normal speeds and without detriment to the final appearance of the book.
Details of the book binding equipment itself have not been given since the equipment itself forms no part of the present invention and in any event will be familiar to a person skilled in the art.
It should finally be noted that the preceding description refers to a particular preferred embodiment of the invention only and that modifications are possible 2~
within the broad scope of the invention. Some of thosemodifications have been indicated previously and others will be apparent to a person skilled in the art. For example, the invention may be applied to books of many different types including law books, product catalogues, telephone books, medical books, dictionaries, and event to leaflets or pamphlets having relatively few pages. Accordingly, the term "book" should be interpreted in its broadest sense as meaning a collection of written, printed or blank sheets fastened together along one edge. The book may or may not have a cover.
Claims (15)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A book provided with a series of index tabs and comprising a bound and trimmed assembly formed from a plurality of sheets and interspersed tab-forming inserts, the assembly having a spine and a trimmed outer edge opposite said spine, each said insert comprising a separate signature unit made up of first, second and third panels, the first and second panels meeting at a first fold line extending along the spine of the assembly and the third panel being foldable inwardly between the first and second panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer trimmed edge of the assembly, the third panel having a free outer edge formed with a projec-ting index tab and being dimensioned so that the index tab projects from said trimmed outer edge of the bound assembly when the third panel is folded outwardly to lie generally co-planar with said second panel.
2. A book as claimed in claim 1, having a plurality of said tab-forming inserts distributed through said assembly, wherein the second and third panels of the inserts are of respectively different widths so that the said second fold lines of the inserts are staggered with respect to one another so that the finished book is of substantially uniform thickness throughout its width.
3. A book as claimed in claim 1, wherein said sheets of the assembly are themselves formed by a series of signa-tures with which the tab-forming inserts are interspersed.
4. A book as claimed in claim 1, wherein said inserts are made of a paper stock that is different from the stock from which the sheets are made.
5. A book as claimed in claim 1, wherein said first panel of each insert is of substantially the same overall dimensions as the said sheets.
6. A book as claimed in claim 1, wherein said second and third panels of the inserts are dimensioned so that said free outer edge of the third panel is inset from said trimmed outer edge of the assembly except at the position of said index tab.
7. A book as claimed in claim 1, wherein said first and second panels of each insert were separated from one another in binding of the book.
8. A method of making a book having a series of index tabs comprising the steps of:
forming an assembly of sheets and interspersed tab-forming inserts, the assembly having an edge intended to form a spine of the book and an outer edge opposite said spine intended to be trimmed, wherein each said insert is in the form of an initially separate six-page signature unit comprising first, second and third panels, the first and second panels meeting at a first fold line extending along said edge of the assembly intended to form the spine and the third panel being folded inwardly between the first and second panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer edge of the assembly, the third panel having a free outer edge formed with a projec-ting index tab and being dimensioned so that the index tab will project from said outer edge of the assembly when the third panel is folded outwardly to lie generally co-planar with the second panel;
binding said sheets and tab forming inserts to form a unitary assembly; and, trimming at least said outer edge of the assembly while said third panels of the tab-forming inserts remain folded inwardly.
forming an assembly of sheets and interspersed tab-forming inserts, the assembly having an edge intended to form a spine of the book and an outer edge opposite said spine intended to be trimmed, wherein each said insert is in the form of an initially separate six-page signature unit comprising first, second and third panels, the first and second panels meeting at a first fold line extending along said edge of the assembly intended to form the spine and the third panel being folded inwardly between the first and second panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer edge of the assembly, the third panel having a free outer edge formed with a projec-ting index tab and being dimensioned so that the index tab will project from said outer edge of the assembly when the third panel is folded outwardly to lie generally co-planar with the second panel;
binding said sheets and tab forming inserts to form a unitary assembly; and, trimming at least said outer edge of the assembly while said third panels of the tab-forming inserts remain folded inwardly.
9. A method as claimed in claim 8, wherein a plurality of said tab-forming inserts are distributed through said assembly, wherein the second and third panels of the inserts are of respectively different widths so that the said second fold lines of the inserts are staggered with respect to one another so that the finished book is of substantially uniform thickness throughout its width.
10. A method as claimed in claim 8, wherein said sheets of the assembly are themselves formed by a series of signa-tures with which the tab-forming inserts are interspersed.
11. A method as claimed in claim 8, wherein said inserts are made of a paper stock that is different from the stock from which the sheets are made.
12. A method as claimed in claim 8, wherein said first panel of each insert is of substantially the same overall dimensions as the said sheets.
13. A method as claimed in claim 8, wherein said second and third panels of the inserts are dimensioned so that said free outer edge of the third panel is inset from said trimmed outer edge of the assembly except at the position of said index tab.
14. A method as claimed in claim 8, wherein said step of binding the sheets and tab-forming inserts includes removal of a portion of said spine of the assembly so that the first and second panels of each insert are separated at said first fold line.
15. For use in a method as claimed in claim 8, a six-page signature unit comprising first, second and third panels, the first and second panels meeting at a first fold line extending along said edge of the assembly intended to form the spine and the third panel being folded inwardly between the first and second panels about a second fold line adjoining the second panel and disposed parallel to the first fold line but spaced inwardly from said outer edge of the assembly, the third panel having a free outer edge formed with a projecting index tab and being dimensioned so that the index tab will project from said outer edge of a said assembly of sheets and inserts when the third panel is folded outwardly to lie generally co-planar with the second panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000544695A CA1263421A (en) | 1987-08-17 | 1987-08-17 | Index tabbing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000544695A CA1263421A (en) | 1987-08-17 | 1987-08-17 | Index tabbing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1263421A true CA1263421A (en) | 1989-11-28 |
Family
ID=4136289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000544695A Expired CA1263421A (en) | 1987-08-17 | 1987-08-17 | Index tabbing system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1263421A (en) |
-
1987
- 1987-08-17 CA CA000544695A patent/CA1263421A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |