Patent GB-461347-A (GB)
Abstract: 461,347. Typewriters &c. NATIONAL CASH REGISTER CO. June 13, 1935, No. 17065. Convention date, June 25, 1934. [Class 100 (iv)] [Also in Group XIX] Tabulating - mechanism ; tabulating- key actions.-In a calculating machine having a travelling carriage and means adapted to arrest the carriage in predetermined tabulated positions, a control key is provided, which when depressed is adapted to supersede the normal control of the arresting means to cause the carriage to skip-tabulate to preselected columnar positions. If the key is momentarily depressed, the carriage is caused to skip-tabulate to a particular column, but if the key is hold depressed the carriage moves until arrested by an auxiliary arresting means. A balance key is also provided to condition the machine for taking a total from the balance totalizer, means being provided for preventing depression of this key until the carriage has been tabulated to the appropriate column. The invention is shown applied to a machine of the Ellis type as described in Specification 28253/8, [Class 100], with front feed platen mechanism as described in Specification 424,132, and a line-spacing starting bar and mechanism as described in Specification 424,149. In accordance with the present invention a skip-tabulating mechanism is provided including a skip release bar 251, Fig. 3, depression of which releases the machine for operation and at the same time latches the tabulating stop bars in inoperative position. By this means the carriage tabulates until stops 268, Fig. 8, in predetermined columnar position release the tabulating stop bars. In the normal tabulating movement, which is effected by the downward movement of the usual tabulating lever 135, under control of the tabulating keys or automatically by the usual hook 135 on the operating lever 113, Fig. 4, the lever 135 rocks a lever 205, Figs. 10 and 11, and imparts a clockwise movement to a lever 207 so as to raise a tabulating stop bar 217 into the path of a stop 120 on the carriage and to lower the escapement control plunger 211. The stop bar 217 is held in its raised position by a latch 219 engaging a pin 221 on the lever 207. As the stop bar is raised a stud 223 thereon lifts an escapement control bar 232 to which is pivoted a lever 224 co-operating with a pin 210 on the plunger 211. The control bar 232 is held in raised position by a pin on a latch 237 engaging a notched recess in the bar. In action, the impact of the carriage is absorbed by the bar 217 which is moved to the right to free the latch 219 and a spring 213 restores the levers 207, 205 on the rebound of the carriage. The bar 232 is then engaged by the carriage and the latch 237 is released and the bar 232 is lowered by the spring 226 acting on the lever 224 which is rocked to allow the escapement control plunger 211 to return to operative position. For skip - tabulating operations, depression of the skip bar 251 rocks a lever 247 and displaces a link 245 forwardly. A bifurcated extension on the link rocks a latch 242 to hook over an extension 241 of the lever 224 to restrain upward movement of the control bar 232. A lever 255 connected to the rear end of the link 245 is rocked on the forward movement of the link to move a lever 257 into such a position that a step 258 thereon engages the rear edge of a stud 260. The lever 257 is connected at its upper end to a slide 263 supported on the carriage and having a roller 267 which co-operates with the stops 268, 269, adjustably mounted on a carriage bar 270. Depression of the skip bar 251 through an extension 252 depresses the motor starting bar 64 and although the hook 137 pulls down the tabulating bar 135 and rocks the levers 205, 207, the stop bar 217 is prevented from rising by the co-operation of the pin 223 with the stop in the control bar 232. Rocking of the lever 207, however, lowers the control plunger 211 and the carriage is free to tabulate. When the skip bar is momentarily depressed the stop 268 is operative and by engaging the roller 267 rocks the lever 257 until a step 259 engages the stud 260. This movement causes the link 245 to move so as to withdraw the latch 242. When the lever 224 is freed, the stop bars 217, 232 are forced upwardly by the action of a spring 222 into the path of one of the stops 120. When the skip bar is held depressed the lever 257 is rocked without imparting movement to the link 245 as the spring 261 is weaker than the spring 254 which forms a resilient connection between the bar 251 and lever 247. The carriage continues to tabulate until a stop 269 rocks the lever 257 its maximum amount, a stud 266 thereon positively rocking the lever 255 and displacing the link 245 to withdraw the latch 242. A modified form of the machine shown in Fig. 12 comprises a manipulative member to control the automatic tabulating, the automatic feeding of the platen, and the impression mechanism. In this machine the manual tabulating is effected by depressing a key 415 which rocks a lever 417 that co-operates with a pass-by pawl on the tabulating lever 421. The manipulative member is formed as a lever 426, Figs. 12 and 14, which co-operates with a notched plate 431 that controls the extent of movement of an operating lever 437. The lever 437 has a surface 438 co-operating with the tabulating control bar 132 and connected by a link 439 to an arm 440 engaging a pin on a plate 443 secured to one of a pair of arms 444. The arms support a cross-bar 445 that cooperates with a projection 446 on the printer arm 96. In the first position of the lever 426, depression of the bar 64 causes automatic tabulation and depression of bar 186 causes line spacing. In the second position, the tabulating mechanism is rendered ineffective, but the bar 186 if depressed allows line spacing. In the third position, the lever 437 is operated and the cross-bar 445 is moved to a position to block the printing arm 96, the bars 64 and 186 acting as in the second position. In the fourth position a pin 454 on the plate 431 blocks the movement of the lever 437 and renders the tabulating mechanism and line - spacing mechanism ineffective.