Patent GB-232966-A (GB)
Abstract: 232,966. National Cash Register Co., (Assignees of Ostendorf, L. C.). April 23. 1924, [Convention date]. Cash registers with operating means.-In key-set drawer-operated machines such as described in Specifications 6428/09 and 7916/11, means are provided for compelling a complete operation of the machine before the cash drawer can be returned. Means are also provided whereby the printing mechanism cannot be manipulated to prevent the printing of the proper record and the record strip receiving roll cannot be manually operated while the printing platen is being operated. Drawer-mechanism.-After setting up the item on the key banks 113 the release key 30, Fig. 1, is depressed to release the drawer latch 52 through the bell crank 38, arms 44, and link 51, whereupon the spring-controlled operating arms 55 move the cash drawer forward. The arms 55 are connected by a rod 70 to which is attached a link 69 pivoted to an arm 68, Fig. 2, on a shaft 67 that carries a bell crank 66, Fig. 3, connected by a link 65 to an arm 58, which is loose on a shaft 59 and is attached to one end of the operating spring 57. A full stroke pawl 73 on one of the arms 55 co-operates with a rack-plate 74. To prevent rotation of the drawer without making the proper operation the link 51 is provided with a square pin 75 adapted to engage a notch 76 in a lever 77 to hold the latch in its operated position. The upper end of the lever 77 is positioned so as to be engaged at the proper time by the rod 81 that effects the return of the totalizer actuators to normal position to free the link 51 and latch 52. The rod 81 is supported by a pair of arms 82 each having a roller 86 engaging a cam groove 85 in a plate 84 secured to the shaft 67. A pin 87 on the lever 77 co-operates with a projection on an arm 79 to hold the lever 77 until the pin 75 passes the notch 76 whereupon the pin engages the lower end of the arm 79 to cause the lever 77 to assume its normal position under the action of the spring 78. Printing-mechanism. This mechanism which is of the oscillating printing-table type as described in Specification 7916/11 is provided with means to prevent elimination of the operation of the impression platen, comprising two spring controlled plates 215,216, Fig. 3, which co-operate with the roller 199 on an arm 198 pivoted to the table 190 and ensure that the roller must pass the end of the plate 215 in order to permit the operating mechanism, i.e. the plate 187 and link 186, to return the table 190. The type sector 220 is positioned and the ink-ribbon 221 fed in any known manner. The record strip is fed from a supply roll 214 to a receiving roll 222 by the oscillations of the table 190 and a pawl 224 pivoted to the framework. The record strip may be advanced without operating the machine by means of a hand-wheel but such manipulation is prevented during the printing operation by providing the pawl 224 with a tail 227 which is brought into engagement with the ratchet wheel 223 at such time by reason of the engagement of a cam plate 228 with a pin 229 on the pawl. The Specification as open to inspection under Sect. 91 (3) (a) comprises also totalizer-engaging mechanism and keyboard interlocks, forming the subject - matter of Specification 241,213 and not appearing in the Specification as accepted.