Patent GB-237351-A (GB)
Title: Improvements in cash registers
IPC: G06C7/10
Filed: 1924-04-25
Abstract: 237,351. Haddan, A. J. H., (National Cash Register Co.). April 25, 1924. Cash registers with item-printing mechanism; printing totals and sub-totals; operation counters. -In a key set and operated machine having totalprinting mechanism separately operated by a crank handle, a slidable frame is arranged so that when it is set in its central position the machine can only be used to enter and record items, while when it is moved to its forward or backward position a total or a sub-total may be taken and printed. The total and sub-total taking operations are separately counted and locks are provided to prevent movement of the frame out of mid-position. The machine shown is of the usual type having a totalizer rocked at each item-entering operation into engagement with the differentially-actuated sectors 35 and geared with stepped cams 142 adapted to be felt by arms 151 for taking off the total and transmitting it to total-printing typewheels 141. The item impressions are made from type wheels 41 by a hammer 65 rocked by a cam on the coupler-operated main shaft 59. The totalprinting wheels 141 are positioned by the feeling arms 151 through sleeves and gearing and impression is effected by a hammer 179 operated by a cam on the crank-driven shaft 162. The record-strip passes from a roll 100, over a rocking frame 67, to a winding-on roll 101 provided with a ratchet wheel 103 adapted to be turned by a pawl 102 for line-spacing at each oscillation of the frame. In item-entering operations the frame is rocked clockwise to receive the impression and then counter-clockwise to expose the item-record beneath the aperture 73, this rocking movement being derived from the coupler trunnion 74 through disconnectible means, including an arm 75 and a bifurcated member 77 secured to a sleeve 78 clutched to another sleeve provided with an arm 80. A pitman 85 carries a pin 82 passing through a slot 81 in this arm 80 and into a slot in an arm 83 rigid with the frame. Thus with these connections in the position shown in Fig. 5, the movements of the coupler are transmitted to the frame to cause it to rock at each item-entering operation as stated. In total-printing the rotation of shaft 162 withdraws, by means of the pitman 85, the pin 82 from engagement with the arm 83 and so breaks the connection between the coupler and the frame to allow the latter to be rocked directly from shaft 162 bv means of the pitman 185. For total-printing operations the line-spacing pawl 102 is disabled by means of a cam 192 on the total-printing shaft 162 and a pitman 193 co-operating with a pin 195 on the lower end of the pawl. Consequently in total-printing the pawl is rocked counterclockwise clear of the ratchet wheel 103. The printed total may be moved into view by manually reciprocating the pawl through the medium of a pin 107 on the link 105 supporting the pivot of the pawl. The setting means determining whether an item shall be entered or a total taken comprises a frame 197, Fig. 5, mounted to slide to and fro and having a handle 198 projecting upwards through a slot in the cover plate. When the frame occupies its central position a projection 212 thereon is below a pin on the link 160 so that this cannot be lowered to take a total. If the frame is moved towards the rear the pin will be freed and a subtotal may be taken. Re-setting of the totalizer is prevented in this position of the plate by the displacement of a latch 214 normally connecting the link 160 with the zeroizing sector 215. A slot 223 engaging a pin 222 on a partial gear 220 connecting the sector 215 with the re-setting mechanism prevents movement of these parts while the latch is disengaged. If the frame is moved to its forward position both the total-taking and re-setting mechanisms are rendered operative. Either or both of the adjustments of the plate out of mid-position mav be prevented by locks 200, 201 the bolts of which may be projected into the path of a bracket 202 in the frame. The particular kind of total taken may be recorded by a type wheel 141 adjusted by a depending arm 205 and pin 206. Total and sub-total taking operations of the machines are counted by counters 247, 237 operated respectively by levers 248, 238 pivotally mounted on the frame 197 at 239 and having feet 253, 246 engaged and raised selectively by a pin 245 on the total-taking yoke 159.