Patent GB-732659-A (GB)
Title: Duplicating apparatus for loose-leaf bookeeping
IPC: B41L3/20
Filed: 1951-09-07
Abstract: 732,659. Bookkeeping; manifolding devices. SOENNECKEN, A. Sept. 7, 1951 [Sept. 8, 1950],No.21199/51. Class 16. Duplicating apparatus for loose-leaf bookkeeping by single entry,' comprises a plurality of separate entry plates assembled in the form of a book, each entry plate having a day book sheet mounted thereon and having a guide part for guiding an account sheet for movement relatively to the day book sheet and each plate being hinged in the book so that inscriptions may be made on the account and day book sheets. The loose leaf binder cover 10, which is of variable capacity, has entry plates 11 bound therein by means of a perforated binding strip 13 connected to the plate 11 by a flexible hinge 12 or by a flexible strip 43. As shown in Figs. 1 and 2, a day book sheet 14 is held in a groove 15 along one edge and by a duplicating sheet holder 17 along the opposite edge, a clip 16 positioning the lower edge. The holder 17 is hinged to the outer edge 18 of the plate 11 by a metal rail 19, the holder 17 in position of use being held at its opposite edge by a finger 16a pushed into the clip 16. Each holder 17 comprises a pair of frames 17a, 17b between which a carbon sheet 20 is held. The account sheet 22 is folded round the rail 19 along which it is guided to lie in correct register with the day book sheet 14 on which the entries on sheet 22 are duplicated by the carbon sheet 20. The account sheet 22 is preferably printed with a blank form 24 on either side of the fold line 23, reversed through 180 degrees and may also be similarly printed on the reverse side to give four forms to each sheet. Each side of each entry plate 11 may be provided with holding means for the day book sheet-and also a holder 17, the book 10 normally then being reversed for use. Each plate 11 is provided with a tab 21, preferably staggered as shown, and adapted to be written on, tabs 21 being provided both at top and bottom edges when both sides of the plate are used. As shown in Fig. 4, the day book sheet 14 is retained on the entry plate 11 by means of bars 25, 26 and 27, the upper and lower edges lying against abutment bars 51, 52. The duplicating sheet holder 17 is held under bars 25, 26 and comprises a frame 28 completely covered by a transparent sheet 29 to which it is secured along three edges. A grip lug 30, on the open edge of frame 28, assists insertion and removal from the plate 11. To insert the flimsy carbon sheet 20, a folder 31 is provided having a fold edge 32 and finger recesses 33 on the opposite edge, the folder 31 and inserted carbon 20 being introduced into the holder 17, the carbon 20 being gripped in the finger recesses 33 against the frame 28 and the folder 31, removed by pulling the edge 32. As in Fig. 1 a metal rail 19 acts as a guide for the account sheets 22 and also acts as a stop for the sheet holder 17. The bar 26 is arranged to be at the position of the balance column on the account sheets 22 and to cover the bar of the frame 28. The frame 28 and cover sheet 29 may be extended as shown in dash-dot lines 34, the frame 28 then having an additional recess 281 for the entries to be duplicated. Instead of using loose duplicating sheets in a holder, in either of the constructions, account sheets 22 may be used with areas coated with carbon on the back. As shown in Fig. 9, each form 24 has two areas 46a and 47 intended to be duplicated, the areas on the two halves coinciding substantially when folded. The positions of the two areas may be varied, corresponding to different columns on different account sheets' as for instance customers, suppliers and book account sheets so that the duplicates cannot be entered in the wrong columns of the day book sheet 14. Alternatively, for single column account sheets, the colours of the coatings may be varied for each type of account sheet so that the duplicates, although in one column on the day book sheet, may be readily distinguished for separate addition. Additional copies on a statement of account sheet may be made by coatings of carbon on the rear or by a holder 17 and separate sheet 20. Dark sheets 14 may be used with light carbon coatings on the account sheets 22. For day book sheets 14 which receive only comparatively few entries, the sheets 14 may be of smaller width so that they may be arranged one above the other on a single plate 11.