Patent GB-149379-A (GB)
Title: Improvements relating to loose-leaf indexes, ledgers and the like
IPC: B42F17/00
Filed: 1919-03-12
Abstract: 149,379. Hern, A. C. March 12, 1919. Sheets and cards; covers.-In a loose-leaf index, ledger, folder, &c. in which the first letter of the indexed matter is indicated by main tabs, such as the tab G, Fig. 1, in the case of a ledger, subsidiary tabs are arranged under the main tabs and marked with the vowels A, E, I, 0, U, as shown, the index, ledger, &c. containing, following each vowel-tabbed leaf, leaves arranged in alphabetic order of the second letter of the in-' dexed matter. These leaves are provided at their top edges with projections, preferably not extending above the edges of the tabbed leaves, arranged in groups according to the letters of the alphabet and their relationship to the vowels with the aid of a templet. The projections to the left indicate the second letter of the word, and further projections to the right may indicate the third letter on the same system. Thus a sheet with the word " Gabe " is marked with letters A, B at the top and filed behind the leaf with the subsidiary tab A which leaf is itself below the leaf with the main tab G. Preferably the top right hand corner of each leaf has a numerical reference in accordance with a key to facilitate rapid filing. In a card index, Fig. 3, the main tabs and subsidiary vowel tabs are at the left of the top edges of the guide cards, and the cards on which the names are written have numbered projections separated according to the position of the consonants in the key for the numerical references. In a modification, the vowel projections are slightly displaced with respect to one another. In the card index shown, only the first and second letters are indicated, but further projections may be provided to indicate the third letter, and more space may be allotted for the second letters than for the third letters in accordance with a templet. A numerical reference may also be provided. Various forms of tabs may be used, and a tab for the fourth letter or detachable tabs indicating a further subdivision may be provided. Such detachable tabs indicating Wand a numerical reference are shown in Fig. 14, which illustrates a folder according to the invention with second and third letter projections and a numerical reference in the top right hand corner. The positions of the projections for the second letters are also indicated on the vowel guide cards as shown for the letters L, M. The normal height of the vowel guide cards may be slightly higher than the tabs to protect these. To provide a firm tab on a folder, the top edge of the back d, Fig. 15, has an overlapping part b and this is glued at c to the back, the tabs being cut out of the doubled part. The edge of the other end of the front is turned in and glued down at e. Alternatively, extra pieces may be glued above the top edges, or these may be stapled or sewn. Suitable fastenings may be provided. " Miscellaneous " folders may be provided to file irregular correspondence, and these are provided with a lower tab in the main tab position and a. middle tab marked " miscellaneous," the ordinary second, or second and third, letter tabs and numerical references being provided, and, if required, appropriately marked interleaves. Transfer cases used with the folders are marked correspondingly to the folders. Tabs may be dispensed with and letters marked on distinctively coloured cards or folders in the proper positions, a square of the appropriate colour being marked on the vowel guide card.