Patent GB-681924-A (GB)
Abstract: 681,924. Calculating-apparatus, VICTOR ADDING MACHINE CO. April 18, 1950 [May 14, 1949], No. 9476/50. Class 106 (i). An accounting calculating machine wherein the carriage is automatically driven to different tabular positions by operation of appropriate keys is characterized in that the carriage driving means are controlled in accordance with the setting of the selected one of a plurality of key controlled car. riage actuator assemblies which are spaced along a line parallel to the path of movement of the carriage and which are set by the carriage to different control positions determined by the position of the centre of the carriage relative thereto. The invention is applied to a full keyboard calculating machine, Figs. 1 and 2, comprising a case 20, numeral keys 22, control keys 24, 26, 28, and a row of eight carriage positioning keys 30. The machine includes reciprocable actuators 34, Fig. 2, differentially positioned by the keys 22 and operating through gearing the totalizer 46 and the printing type wheels 48. Addi. tional totalizers may be operated from the racks 53 on the actuators 34. The carriage 32 is movable along guide rails 54, 56, and includes a frame bar 58, Figs. 2 and 4, end plates 62 and 63, Fig. 4, a square cross shaft 66, cross rods 64, 68, 70, 72, Fig. 2, a platen shaft 74, a platen 76 and a paper guide plate 78. A pair of paper edge guides 80, Fig. 3 are slidable on the guide plate 78 and may be clamped thereto. The paper is held against the platen 76 by three pairs of feed rollers 84 which are mounted on a rocking frame 86, Fig. 2, and are urged towards the platen by spring-pressed levers 88 the upper ends of which rest against the rod 68. The rod 68 may be rotated by a handle 96, Figs. 1 and 4, to withdraw the rollers 84 from the platen. Above the platen 76 is a hold-down bail wire 98, Fig. 3, and a paper guide and tear strip 100. The keys 30, Figs. 2, 15 and 16, have stems 102 vertically movable in top and bottom frame plates 104, 105 spaced by front and rear plates 106, 107, Fig. 16. The frame comprising the plates 104-107 is supported by nine links 110 which extend through slots in the plates 106, 107 and support a long coil spring 116, Figs. 15 and 16, against which rest studs 118 on the key stems 102. Pendant levers 122, Fig. 15, the tips 123 of which engage slots 126 in the plate 105 form key crowding locks. The foot of the key stems 102 rest on a slide bar 128 supported by a pair of arms 134 fixed to a rotatable shaft 142 connected by an arm 144, Fig. 14, a link 146, a bell-crank 148 to a carriage locking slide 154 vertically movable on a fixed bracket 156, but normally urged upwards by a spring 164, Fig. 4. Pivotally mounted on the slide 154 is a pair of carriage stop and positioning levers 170, 171, Figs. 4 and 14, urged upwardly by an interconnecting spring 180 to the positions in which their opposed notches 182 engage a stud 184, Fig. 4, of the adjacent strap 186 of a set of straps adjustably mounted on the shaft 66 which may be rocked by a lever 192, Figs. 1 and 4, to release the stud 184 from the levers 170, 171. Each key stem 102 is connected by a bell-crank 203, Figs. 2 and 16, and a link 208 to a slide member 324 of the corresponding actuator assembly 210, Figs. 9 and 10, adjustably positioned on a shaft 212 mounted in end brackets 214, 215, Fig. 4. Pivotally mounted between the brackets 214, 215 are a pair of bails 216, 217, Figs. 4 and 9. The right-hand ends of the bails 216, 217 are fixed to stub shafts 222, 223, which carry arms 224, 225, Fig. 12, respectively, having rollers 226, 227 which co-operate with arms 228, 229 of a T- shaped lever 230 pivoted on a stud 232 of an arm 234 which serves to actuate the button 240 of a microswitch 242. The lever 230 is pivoted to one arm of a bell-crank 245 the other arm 246 of which is connected by a link 248 and an arm 250 to a shaft 252. A pair of arms 256, 257, Figs. 6 and 12, are mounted on the shaft 252 and each carry a stud 258, 259 which are embraced by arms 260, 261 which are free on the shaft 252 and are urged toward each other by a spring 262. Also fixed to the shaft 252 is a bail 264, Figs. 6 and 12, having a pair of extending arms which carry lugs 268 which enter a groove 270 in a double jaw clutch member 272 slidable upon and rotatable with a vertical shaft 274. The clutch member 272 may be moved to engage either of two clutch parts 278, 279 rotatable through gears 286, 280 and 287, 281 respectively from opposed sun wheels 290, 291, Fig. 4, of a differential gear the planet wheel 292 of which is driven by an electric motor 302. The shaft 274 is therefore rotatable in one direction or the other according to which clutch part 278, 279, Fig. 12, is connected to the clutch member 272 and effects movement of the carriage to the left or right through pinions 282, 283 and a rack 284 fixed to the carriage. Each actuator assembly comprises a lever 310, Figs. 9 and 10, having at one end a notch 312 and at the other two recesses 316 either of which may be engaged by a roller 318 carried by an arm 320. The slide member 324 is mounted for reciprocation on an arm 326 of the lever 310 and embraces at its rear end a roller 336 on the shaft 212. The slide 324 is normally urged to the rear by a spring 342 and has a pair of laterally projecting lugs 340, 341 which may be latched by corresponding, latches 338, 339 when the assembly is rocked clockwise or anticlockwise as described later. The slide 324 has a forward projection 344. A bar 306, Figs. 6 and 9, having two offset straight parts 307, 309 joined at the centre by an S-shaped bend 308 extends above the assemblies 210 and is embraced by the notches 312 of the levers 310 so that each assembly 210 is positioned thereby in accordance with which part of the bar 306 it is beneath. The slide projections 344 of the assemblies below the part 307 will be positioned adjacent the bail 217, Fig. 8, not shown. The projections 344 of the assemblies below the part 309 will be positioned adjacent the bail 216, Fig. 9, and the projection 344 of the assembly below the part 308 will be position between the bails 216, 217. In operation upon depression of a key 30 corresponding to an assembly 210 below the part 307 the slide 154 is moved down by the link 146, Fig. 14, so that the levers 170, 171 free the adjacent stop 184, the corresponding slide 324 is pulled forwardly through the link 208, Fig. 2, and the projection 344 engages the bail 217 and swings it counter-clockwise, Fig. 12, the lever 230 is thereby rocked clockwise through the shaft 223, the arm 225 and the roller 227. The lever 234 effects closure of the microswitch 242. The bell-crank 245 is moved counter-clockwise and through the link 248, the arm 250, the shaft 252, the arms 256, 257, 260, 261, Figs. 6 and 12, and the springs 262, the bail 264 is moved clockwise, Fig. 12, to move the member 272 into engagement with the clutch part 278, thereby driving the shaft 274 from the upper sun wheel 290, Fig. 4, and through the pinions 282, 283 and the rack 284 the carriage 32 is moved to the left until the part 308 of the bar 306 reaches the appropriate assembly 210 to move the lever 310, Fig. 9, to its central position, whereupon the switch 242, Fig. 12, is opened and the clutch parts 272, 278 are disengaged. At the same time the corresponding stop 184 will be engaged by the notches 182, Fig. 4, of the levers 170, 171 and the carriage will thereby be correctly located and locked. If a key 30 corresponding to an assembly 210 below the part 309, Fig. 6, of the bar 306 is depressed the bail 216 is rocked clockwise by the slide projection 344, Fig. 9, and through the shaft 222, the arm 224, Fig. 12, the lever 230 is rocked counter-clockwise and through the linkage described above the clutch member 272 is moved into engagement with the clutch part 279. The shaft 274 is then driven from the sun wheel 291, Fig. 4, and the carriage is moved to the right until correctly located and locked as before. The motor 302 not only drives the carriage but also operates the adding machine mechanism.