Patent GB-477718-A (GB)
Title: Bookkeeping arrangement for loose leaf bookkeeping
IPC: B41L3/14
Filed: 1936-10-08
Abstract: 477,718. Book-keeping; writing-cases. SCHLAPFER, A. Oct. 8, 1936, No. 27326 [Classes 16 and 146 (iii)] A duplicating book-keeping arrangement utilizing loose leaves comprises a slidable table 10 for the journal leaves, an overlying portfolio device 16, 17 provided with window apertures for the account leaves, mounted to slide perpendicularly to the table 10 on a stationary guide bar 15, and means, such as a fixed toothed rack-bar 20 adapted to be engaged by a displaceable pawl device 22 on the table 10, for arresting the table at predetermined intervals whereby the columns on the sets of leaves can be adjusted. The credit and debit columns on the journal leaves are in reverse order to those on account leaves. As shown in plan in the Figure, the arrangement is mounted within a rectangular box 1 provided with a hinged lid 3, a felt layer on its undersurface, and finger-holes 341 at the sides. Leaves can be filed under rubber cords 43 mounted on pegs 42, or in clamps 44 fitted to the inside of the lid 3. A large aperture 31 in the bottom of the box has ribs 32 on its edges to support a number of file covers 34 having extensions 33 on their free outer edges which rest on the ribs 32. The table 10 is provided with ball-bearing rollers 11 to enable it to slide along bars 6, 7, the latter bar having a grooved metal rail 9 fixed on its upper surface. The table is an aluminium plate with pegs 12<1> for the reception of the journal leaves, and a clamp 12 for retaining the leaves in position on the pegs. The portfolio device for the account leaves comprises an aluminium lower cover plate 16 integral with a back member 17 which is grooved to engage the fixed guide bar 15, and a shorter cardboard upper cover 16<1>, faced on the inside with felt, which is hinged to the back 17, and superposed windows 18 are provided in both covers. The account leaves are placed between the covers and can either be registered by the back 17 or as set out below. The right-hand side of the box is provided with a large fixed cover plate 14 under which the table 10 can slide, and a long aperture 26 in the plate 14 enables the pawl 22 of the table 10 to be manipulated, scale markings being provided on the plate adjacent the slot to facilitate adjustment of the table. The left-hand edge of the cover plate 14 is reduced in thickness to form an abutment edge 27, and a row of pins 28 is provided on this edge for the reception of perforated account forms which lie between the portfolio covers. The various leaves may be coated on their reverse faces with carbon, or separate carbon leaves are used. In operation, account leaves which are not perforated are placed between the covers 16, 16<1> which are then moved along the guide bar 15 into the correct vertical position relative to the journal leaves, and then the table 10 with the journal leaves thereon is moved along the rails 6, 7 to register the writing columns, and writing effected on the account leaves in the window space 18 is reproduced on the journal leaves on the table 10. The pawl 22 comprises a pivoted arm having in the free end a vertically slidable bolt which engages the teeth of the rack 20. The table 10 can be moved to the right only when the bolt is lifted or the pawl is swung aside. The table tends to move to the right owing to the inclination of the rails 6, 7, so that the bolt of the pawl always rests against a tooth of the rack 20. A clamp 37 removably mounted in a groove in the plate 14 serves for holding writing sheets 39.