US897600A - Index. - Google Patents

Description

PATENTED SEPT. 1, 1908.

E. DAVIS.

INDEX APPLICATION FILED NOV. 30, 1906.

UNITED STATES PATENT oEEioE.

EUGENE DAVIS, OF ST. LOUIS, MISSOURI.

INDEX.

To all whom it may concern:

. Be it known that I, EUGENE DAVIS, a citizen of the United States of America, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Indexes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to certain improvements in index sheets and index tabs, more particularly intended for use in loose leaf ledgers.

Figure I is a perspective View of a portion .1 of a ledger having my index sheets and index tabs incorporated therein. Fig. II is an enlarged section taken on line II-II, Fig. I. Fig. III is an enlarged cross section taken on line IIIIII, Fig. II. Fig. IV is a perspective view of one of the index sheets on the same scale as Fig. I. Fig. V is a perspective view of a rivet member. Fig. VI is a per speotive View of a folded binding member. Fig. VII is a perspective View of a folded tab proper. Fig. VIII is a perspective view of a folded shield.

1 designates the sheets of a ledger which may be of any ordinary form.

2 are index sheets. Each index sheet is ruled and preferably bears letters or other symbols located upon the projecting portion of the sheet.

Referring now to the index tabs which I apply to the index sheets, 4 is the tab proper which is provided with a sight opening 5 at its rear portion and a forward tongue 6 bent back toward the body of the tab proper and adapted to be bent back further onto the index sheet when the tab is applied thereto. In the rear end of each tab proper are perforations 7. The tab proper may be of metal or other stiff material.

8 is a binding member that is folded centrally and is preferably of tape. The fold of this member is preferably cut out at 9 and one wing of the member is provided with perforations 10 that are adapted to register with the perforations 7 in the tab proper.

11 is a rivet member, preferably of soft metal that is provided with spurs 12 which are adapted to be passed through the perforations 10 in the binding member and through the perforations 7 in the tab proper, and then riveted over onto the tab proper for the purpose of uniting said parts. After Specification of Letters Patent.

Application filed November 30, 1906.

Patented Sept. 1, 1908.

Serial No. 345,686.

the parts have been thus united the tab in its entirety is in a completed condition and ready to be applied to the index sheet. To permit of the ready application of the tab the binding member thereof is preferably gummed or provided with an adhesive coating which, when moistened, will be in a condition to readily adhere to the index sheet. 13 is a folded shield of transparent material which is provided at the fold thereof with an opening 14 (see Fig. IV) that will permit of the shield being readily slipped over the tab and onto the index sheet after the tab has been applied to such sheet. This shield being of transparent material the symbols or lines upon the index sheet may readily be discerned therethrough and through the sight'opening 5 in the index tab and the cut away portion 9 in the binding member 8, as will be apparent. The tabs are applied to the index sheets in conjunction with the alphabetical or other symbols thereon and opposite such symbols, and the tab upon each individual index sheet is different in color from the tabs on the other sheets, in order that the sheets may be readily distinguished, due to such difference in color. The tabs are also provided with coatings of enamel or analogous substance, in order that they shall be free of sharp edges.

I claim 1. In a book index, the combination with a plurality of book sheets, of a plurality of index sheets each projecting beyond the book sheets the whole length thereof, and tabs attached to the margins of said index sheets, substantially as set forth.

2. In a book index, a plurality of index sheets and a lurality of tabs, each of different color an having a wing bent back toward the body of the tab, substantially as set forth.

3. A book index tab having a wing bent back toward the body thereof and adapted to be bent back further toward said body, and a gummed binding member riveted to said tab, substantially as set forth.

4. A book index tab having a win bent back toward the body thereof and adapted to be bent back further toward said body, and a rivet member having rivets whereby said tab may be riveted to an index sheet, substantially as set forth.

5. In a book index, an index sheet having a marked edge, and a tab having a wing bent back toward the body thereof and adapted to be bent back further toward said sheet, substantially as set forth.

6. In a book index, a plurality of index sheets having marked edges to provide continuous marked lines said index sheet being located between the leaves of the book at intervals, and tabs having wings bent back toward the bodies thereof and adapted to be bent back further toward said sheets, sub stantially as set forth.

7. In a book index, an index sheet, a tabv attached to said sheet, and a transparent shield ap lied to said sheet at the location of said tfb, substantially as set forth,

- tially as set forth.

9. A bookindex tab comprising a tab proper having a sight opening therein, and a binding member having a sight opening therein, substantially as set forth.

EUGENE DAVIS.

In presence of NELLIE V. ALEXANDER, BLANOHE HOGAN.

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