US1614838A - Index - Google Patents

Description

Jan. 18, 1927.

F. P. GORIN INDEX Filed Oct. 27, 1925 Patented Jan. 18, 1927.

1,614,838 PATENT OFFICE.

FREDERICK P. GORIN, 0F SEATTLE, WASHINGTON.

INDEX.

.Application filed October 27, 1925.

This invention relates to means for indexing bound books, With a vieu7 to providing an index which Will be comprehensive in its notation, which may be selectively applied as desired, and Which, When 1n place, will be secured against liability of separatlon in use or a tendency to tear the leaf or leaves to which it may be applied.

In providing index means for booksof certain character, as laW books and technical publications, the ordinary alphabetical 1ndex is of little or no service and the index notations must of necessity be sufficiently lcomprehensive to indicate, for example,

chapterl divisions or subject divisions, and Under these circumstances the index tab per se must be capable of carrying a larger legend than is the case With the alphabetical 1ndex. Indexes of the particular type referred to have been heretofore proposed in connection with books of this character, but such, Where formed as a part ofa particular leaf or separately formed and attached to such leaf have proven of little value as they were readily separated from the leaf 1n use, or when more permanently att-ached., 'resulted in a tearing of the leaf or leaves 1n opening the book through the use of the index tabs.

The present invention is designed to provide an index tab which will permit a sufficiently comprehensive index notation and which Will be so attached to the leaf as to render separation therefrom in ordinary use practically impossible,'and which at the same time Will utilize the index tab as the means subjected to strain when opening the book With the index, thereby avoiding the possibility of tearing the leaf.

The invention is illustrated in the accompanying drawings, in Which: l

Fig. 1 is a broken perspective view ofa book showing several of the index tabs in position.

Fig. 2 is a broken plan with the book open at one of the index leaves.

Fig. 8 is a section on line 3-3 of Fig.` 2.

The index tab proper, of which of course there may be any desired number, comprises a strip of transparent material, as 1, preferably celluloid or the like, folded upon itself and having a length when folded approximating the Width of the leaf 2 of the book, and the additional projection 3 beyond the free edge of the leaf necessary to provide a tab proper of the required Width. The strip Serial No. 65,219.

as folded embraces the leaf 2, the free ends of the strip terminating approximately adjacent the inner or bound edge of the leali. The strip is secured to the leaf by any suitable transparent adhesive, and the strip itself is comparatively thin.

Thatportion of the strip which vextends beyond the free edge of the leaf is thus formed of upper and lower sections defining a space closed at the inner-end by the edge of the leaf 2 and at the outer end by the fold or bend in the strip l. This space is designed to receive the index notation, and such may be formed on a fabric section 4 printed on both sides with the desired index notation and cemented in place so that the fabric section is securely held as a fixed part of the index tab and the notation thereon is clearly visible through the transparent strip proper. Obviously the sect-ion 4' ma;1 he constructed of any appropriate material. as paper or the like, it being apparent that the strip 1 completely protects the strip 4 and also prevents the notation on the strip 4 from becoming blurred or obliterated through continued use.

Of course the index strips described arc to be applied in appropriate number, that is to say, if the respective chapters of tlhe book form the index basis, there will be an index tab at the first page of each chapter. The printed matter of the -leaf to which the index tab is applied is of course readily legible through the transparent strip 1, and as thev l latter is quite thin, say for example` two thousandths of an inch :in thickness. it is apparent that the strip when applied adds to the particular leaf double this thickness or four thousandths, which is of course a negligible matter of importance, in so far as increasing the thickness of the book is concerned. VAs the index tabs for the hook are necessarily in staggered or offset relation, the book is increased in thickness only to the extent of one of such tabs, which does not appreciably increase the thickness of the book. If the index of the book requires more than one set of oHset tabs, the book thickness Will be of course increased by thc aggregate thickness of the underlying or aligned tabs, but even to this extent the ordinary uses of the book both in the space occupied in the book case and its appearance when closed will not be appreciably changed by the use of the tabs.

The important characteristic of the improved tab is, however, incidental to the fact that while it may be independently ap plied to any book or books, it is when applied an actual reinforce to the book rather than an aid in destroying the book as have been similar tabs as previously developed. 1n the first place, it is to be noted that the tab is secured across the width of the leaf, and on both sides thereof, and in the secondV place, the free end of the index tab strip is formed by a bend in the strip, that is, is closed. Thus the tendency to open the book at the desired point by lifting the superimposed leaves by pulling or raising the selected index tab, will not, in any degree, place any unusual strain upon the leaf to which the tab is attached, for the strain on the tab is extended throughout the full width of the leaf and is borne by the tab proper on the upper and lower sides of the leaf. lf the tab were a single strip applied to by one side of the leaf, it is apparent that the attempt to lift the leaves by the selected tab would exert a leverage upon the connection of such tab and leaf and tend to either strip the tab from the leaf or tear the leaf at its connection with the tab. These disadvantages are entirely overcome by the present arrangement as there is no possibility of stripping the tab from the leaf and the strain of lifting the leaves of the book is borne directly bythe opposing sides of the tab strip, and this is secured to the opposing `sides of the particular leaf substantially throughout the full width of the latter. It is of course to be understood that the projection of the strip beyond the edge of the leaf is of sufficient width to permit the desired index notation, and if this notation is to be in the particular instance unusually comprehensive, the width of the tab may be increased to permit the printing of several lines on the strip included between the projected portions of the tab strip. There is of course no limitation in this respect, as it is intended that the improved tabs 4shall be made up for application to the book after the same has been prin-ted, and each tab will therefore be constructed with a particular view to the nature and character of the index legend it is to carry.

l. The combination with a bound book of an index tabfto be secured to a leaf of the book, said tab comprising a strip of material extended across said leaf on both surfaces thereof and projected beyond the free edge of the leaf to provide a tab receiving section, the ends of the strip being .secured to the leafimmediately-adjacent the bound edge of the leaf whereby any strain on the index tab is transmitted to the leaf at a point adjacent the bound edge thereof to avoid mutilating the leaf.

i2. The combination with a bound book of an index tab therefor comprising a` strip folded upon itself with the folded edge positioned beyond the free edge of the leaf and the sections of the strip inwardly of the folded edge extended across the respective surfaces of the leaf to a point adjacent the bound edge of Isuch leaf, the free ends of the strip beingsecured tothe leaf immediately adjacent the bound edge of the latter, that portion of the strip beyond the free edge of the leaf being designed to receive an index indication. Y

3. The combination with a bound book of an'index tab therefor comprising a transparent strip folded upon itself with the folded edge positioned beyond the free edge of the leaf and the sections of the strip inwardly of Ithe folded edge extended across the respective surfaces of the leaf to a point adjacent the bound edge of such leal, the fr-ee ends of the strip being secured to the leaf immediately adjacent the bound edge of the latter, that portion of the strip beyond the free edge of the leaf being designed to receive an index indication.

In testimony whereof I affix my signature.

FREDERICK l). GORIN.

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