Patent GB-751368-A (GB)
Title: Improvements in or relating to loose-leaf clamping devices for use in book-keeping
IPC: B41L3/02
Filed: 1954-01-21
Abstract: 751,368. Book-keeping; filing papers. STIEGLER, J. P., and HAUSSER, K., [trading as TAYLORIX - ORGANISATION STIEGLER, HAUSER & CO]. Jan. 21, 1954 [May 20, 1953], No. 1833/54. Classes 16 and 146(1) A loose-leaf clamping device for use in book-keeping comprises clamping elements at one side of a support plate for loose leaves and which provide a clamping fitting for a loose-leaf sheet to lie above a bottom sheet, the fitting being liftable clear of the plate together with the loose leaf clamped thereby. the clamping fitting comprising marginally aligned rows of clamping bolts urged resiliently against the plate with some of the bolts in one of the rows each having a tongue at the bottom thereof against which the corresponding bolt of another of the rows bears for clamping the loose-leaf sheet. As shown in Figs. 1, 4 and 5, the device comprises a housing 2 on a support plate 1 for lifting bars 3k, 3j and 3f each secured to a bolt 4 extending up through the housing and having clamp bolts 13k, 13j and 13f guided in cross plates 11, 12 for clamping respectively the account sheet, ledger sheet and carbon paper. The three bars 3k, 3j and 3f are operated by finger keys 10k, 10j and 10f on hand levers 7k, 7j and 7f rotatable about a pin 8 in a bearing 9 on the top of the housing and secured at their opposite ends by pins 6 to the forked heads 5 of the respective bolts 4, the keys 10 being disposed as shown for manipulation together and operation of the key 10j also operating the key 10k. Each clamp bolt 13 is supported by a collar 14 on the corresponding lifting bar 3 and is pressed downwardly by a spring 15 between the collar 14 and the plate 12, the bolts 13 on any bar being raised by operation of the finger key 10. Every other bolt 13j is secured at its base to a plate or tongue 16 having an inclined edge 16<SP>1</SP> and of a size to underlie the corresponding clamp bolt 13k so that an account sheet will be clamped between the bolts 13k and tongue 16 on alternate bolts. To lift only the bolts 13j having the tongues 16, so that with the bolts 13k also lifted by pressing the finger key 10k the account sheet is raised while the ledger sheet is still held by the other bolts 13j and an additional group assembly sheet and carbon paper can be inserted below the tongues 16 to be clamped thereby, angle levers 17 are mounted on pins 18 in the clamp bar 3j so that their forked ends 17' engage under the collars 14 of the bolts 13j having the tongues 16, the other ends of the levers 17 being engaged by pins 20 on a bar 19 longitudinally slidable in the top of the housing .2, the pins 20 passing along slots 21 in the plate 12 to pivot the levers 17 to raise the bolts 13j. The bar 19 has slots 22, 23 and 24 for the passage of the bolt 4, the bolts 13j and the angle levers 17 and in this embodiment is operated by a handle 25 extending upwardly through a slot 26 in the housing 2. In the modified operation for the bar 19 shown in Fig. 7, the bar 19 is articulated by a link 27 to the hand lever 7k to be displaced at the same time as the bolts 13k are raised by depression of finger key 10k. The link 27 is coupled to the lever 7k by a pin 28 on the lever 7k which engages an angular slot 29 in the link 27 arranged so that when the pin 28 lies in the longer part of the slot. the key 10k can be depressed without lifting the tongues 16. A coupling lever 31 is rotatably connected by a bolt 30 the hand lever 7k and has a small finger key 31<SP>1</SP> lying alongside the key 10k for easy operation therewith. The bent over end 31<SP>11</SP> of the lever 31 co-operates with an extension 27<SP>1</SP> of the link 27 so that depression of the key 31<SP>1</SP> lifts the link 27 slightly to bring the pin 28 into the shorter slot part 29 and couples the link 27 for movement with the hand lever 7k so that the bar 19 is slid to pivot the levers 17 and lift the tongues 16.