Patent GB-318466-A (GB)
Abstract: 318,466. National Cash Register Co., (Assignees of Robertson, W. H.). Aug. 31, 1928, [Convention date]. Cash registers with item-printing mechanism; voucher-issuing.-In a cash register or similar accounting machine having mechanism for printing and issuing a ticket or alternatively printing on an inserted slip, the insertion of a slip changes the operation of the ticket-ejecting means to cause them to feed the inserted strip between impressions. Two groups of type wheels 40, 41, Fig. 1, are set from the differential mechanism through nested tubes 45 according to the amount and transaction, one group 40 serving to impress a record strip 56 and the other group 41 to make duplicate impressions upon either a ticket strip 55 or an inserted slip. Other wheels in each group represent the date and consecutive number. The printing-hammers 60, 75 are both controlled by a cam 132, Fig. 7, having two actuating drops 145, 149, the first of which is rendered ineffective upon the hammer 60 for the record strip by a coaxial cam 146. The ticket strip is fed in two movements by raised flanges 80, 81 on a printing roller 66, and passes upwardly in front of a movable knife 107, behind a fixed knife 74 and type wheels 41, and between two pairs of ejecting rolls 150, 151. The roller 66 is rotatable with a cam 96 connected to a driving-disc 92, Fig. 8, by the engagement of a projection 95 on the cam between actuating and stop pawls 93, 94 on the disc. One pair of ejector rolls 150 are rotated by a toothed sector 163, Figs. 2 and 7, actuated by a tension spring 191 and controlled by a cam 170 on a shaft 171. The spindle of the other pair of ejector rolls 151 is rotatable about a shaft 203 and is moved into and out of operative position by a cam 223, Fig. 5, on shaft 171, through mechanism including toggle levers 206, 212 and stud 204. In a ticket printing and issuing operation, the ejection of the ticket is deferred until the end of the operation, the rolls 151 being maintained in inoperative position by a lever 227, Fig. 2, controlled by a slot in the cam 96, and the sector 163 being restrained by a pawl 180, Fig. 4, engaging an ear 182 on the sector and controlled by the peripheral surface of the cam 96. The linkage 206, 212 is maintained in position, to enable movement of the rolls 151 to operative position, by engagement of a lug 234 on lever 212 with a notch 240 on a latch 232 that is tripped by the sector 163 after the ticket has been ejected. The insertion of a slip automatically disables the feed roller 66 and cam 96 and enables the rolls 150, 151 to feed the strip between impressions. For this purpose a feeler 250, Fig. 8, is allowed to enter the slip shoot at each depression of the release key 270. The presence of a slip causes a pin 276 on lever 258 to be maintained within the arcuate part of a slot 277 in a lever 278, thereby causing a stud 280 on the lever to engage the tail 282 of the driver pawl 93 and release the cam 96 and roller 66. The non-rotation of the cam 96 disables the lever 227 and catch 180 so that the rolls 151 are moved into active position soon after the beginning of an operation, and, after the first impression, a reduced part 174 of the cam 170, Fig. 7, enables a small feeding rotation of the rolls 150. To prevent ejection of the slip, the sector 163 is restrained in its upward rotation by a catch 189, Fig. 4, release of the latch 232 in this case being effected through a link 243, a shoulder on which projects slightly below the lip of the catch 189. The feeler 250 is reset soon after the beginning of an operation by the cam 223, Fig. 5, and is retained in reset position by engagement of a shoulder 247 on a link 257 with a fixed stud 2,59. At the end of an operation, a lever 262 connected to the release key 270 returns and raises the end of the link 257 into normal position. A stud 295, Fig. 5, on the lever 262 coacts with an arm 296 of the lever 212 to prevent the return of the lever 262 until the lever 212 has resumed normal position.