Patent GB-362527-A (GB)
Abstract: 362,527. Calculating-apparatus. WADLEY, A. E., Uplands, Brasted Chart, Sevenoaks, Kent. Sept. 10, 1930, No. 27068. [Class 100 (iv).] Type-bar machines; papercarriages; sheetclamping arrangements; column-printing arrangements ; line-spacing mechanism.-A machine for performing double entry book-keeping in a plurality of accounts by recording each item as a credit in one account and as a debit in another account comprises a key'board, printing mechanism, recordsheet carrying means, and means for selectively adjusting the record card 'means relatively to the printing mechanism to print the item set up simultaneously in the selected accounts. Two independent carriages are provided for the credit and debit account sheets and the selection of the registers for receiving the accounts shifts the respective carriages relatively to the printing mechanism. The type-bars 67, 68 associated with the totalizer actuating-rack setting levers 122 are arranged above a pair of platen carriages 17, 18, Figs. 2, and 44 to 46 provided with rails 22 supported between grooved runnels guide 23. One end of each carriage supports a spindle 25 to which is secured a ratchet wheel 26 and disc 28. The disc has pins for engaging holes in the ends of the platens to form a driving connection. Line spacing of the paper sheets is effected by pawls 32 pivoted on cranks 33 on a shaft 35 to which is secured a longitudinal rod 38 slidable in the forked ends of an arm 40 on a spindle 41. The longitudinal adjustment of the platen carriages to bring the appropriate columns of the paper sheet under the type-bars in accordance with the selection of the totalizers is effected by racks 57, 61<1> on the carriages engaging toothed wheels on shafts 59, 63, Figs. 2 and 9, which shafts carry pinions 60, 63<1> engaging racks 61, 64 secured to the frame adjusted to select the credit and debit registers by the manipulative levers 1, 2. Each platen 19 or 20 consists of a tube 45 stopped at one end by a disc 46 journalled in a bearing plate 48, Fig. 42, and at its other end by a disc 49 having apertures to engage the driving pins on the disc 28. The plate 48 is removably supported by recessed lugs 52 and spring-controlled retaining plates 54. The paper sheets are secured to the platens by spring-turn buttons 70, Fig. 49, inserted in suitable holes in one end of the paper, holes in the other end being passed under the buttons which are then turned round through 180‹ to secure the sheet firmly. Alternatively, recessed studs may engage holes formed in both ends of the sheet, the sheet being held by a spring clip 76, Fig. 54. Hammer-impression mechanism.-The heads of the type-bars 67, 68 carry rods 137, Fig. 20, engaged by hammer heads 138 on spring arms 230 secured to a cross bar 235. These arms are depressed to effect an impression by means of pressure blocks 231 slidably mounted on spring- controlled arms 232 pivoted to the frame at 236, Fig. 16, under the control of the operating mechanism. Each pressure block 231 is connected bv a link 239 to a pivoted arm 240 urged to the right, Fig. 16, by a spring 240<1>. The movement of the block along its arm 232 is limited by the engagement of an arc-shaped lug thereon with any one of a number of selector bolts 140, Fig. 20, projected into the path of the lug when the spring-controlled arm 245, Fig. 20, is free from the projection 139 on the displaced type bar. By this arrangement unnecessary zeros to the left of the highest significant figure are eliminated. Operating - mechanism.-The depression of a printing and release bar 5, Fig. 55, operates to engage the selected registers with the actuating racks by rocking the shaft 156, Fig. 5, through its connection with a link 158 and bell crank 159 one arm of which is slotted to receive a pin on an arm 171 co-operating with a pin 174 on the operating lever 173 carrying the bar 5. The downward movement of the lever 173 through a pin 260 pulls down a slotted link 258 so as to rock a cam lever 255 a tooth 254, on which is normally within reach of a tooth 252 on a lever 250, whereby the lever 250 is rocked to depress a rod 247 connecting the lever 250 to the printing pressure arm 232, Fig. 16, to effect an impression. At the end of the downward stroke of the lever 173 a pin 198 thereon engages the lower end of a slot in a connecting-rod 197 coupled to a bridge piece 196, which is depressed, to release the catches 1881 to permit the key-plates 182 to be restored to normal position. During the return stroke of the lever 173 the actuating racks travel back to normal to actuate the registers which are then disengaged. Finally a pin 44, Fig. 14, on the lever 173 rocks the slotted arm 42 to line space the platens 19, 20.