Patent GB-464340-A (GB)
Abstract: 464,340. Cash registers. NATIONAL CASH REGISTER CO. Oct. 15, 1935, No. 28459. Convention date, Oct. 20, 1934. [Class 106 (i)] In a cash register or similar accounting- machine comprising means for setting up type for non-additive data prior to the commencement of a machine operation, and wherein the cycle of machine operation is interrupted one or more times for printing identical data on a plurality of separately inserted slips, re-adjustment of the said setting means is prevented by locking means until the machine has completed its full cycle of operation. Machine release. The depression of one or other of two release keys 11, 12, Fig. 1, lowers a detent plate 15 to permit an arm 19 and the usual release shaft 22 to rock clockwise under the influence of a spring 30 acting on a lever 29 pin-and-slot connected to an arm of the shaft. A locking arm 28, rigid with the lever 29, is thus removed from the path of a lug 31 on a locking disc 33 rotatable on the main shaft 32 and geared thereto in such a manner that it makes two clockwise revolutions in a machine operation, while the main shaft makes only one clockwise rotation. The main shaft, thus freed, is rotated by a motor or crank handle through about 180‹ when it is arrested to interrupt the operation and enable the insertion of the second slip. This interruption occurs after the first slip has been printed and is effected by a stud 42 that is mounted on a disc 41 rigid with the main shaft and is adapted to cam the lever 29 counterclockwise, thus returning the arm 28 into the path of the lug 31. The depressed release key is released at this time by the counterclockwise rocking of the arm 19 and the upward movement of the detent. The operation is continued upon the depression of the release key and, after the second slip has been printed, is interrupted by a second stud 42<1> on the disc 41 that serves to rock the looking arm 28 into the path of a second lug 31<1> on the disc 33. The operation is again continued upon the depression of the release key and, after the third slip has been printed, is concluded by a third stud 42<11> that rocks the arm 28 into its initial position in the path of lug 31. If the release key is held depressed, a spring latch 38 holds the arm 19 and release shaft in locking position after an interruption until the key has been released and again depressed. An indicator 82, Fig. 4, is controlled by a cam 93 on the main shaft to present its three faces 81 in turn beneath a window 94, the faces being coloured or otherwise differentiated to indicate the stages of the operation. Totalizer selection; keyboard interlocks. The release keys 11, 12, Figs. 1 and 11, serve also to select a totalizer for actuation, means being provided for preventing the depression of the inappropriate key during the intermediate stages of an operation. The depression of a key, through a cam plate 149 and levers 152, 153 determines the vertical position of a link 154, Fig. 10, that is connected through a slotted lever 158 and pin 159 to a frame 160 carrying two totalizers, the arrangement being such that the totalizer frame is positioned horizontally to select the totalizer associated with the depressed key. A shutter 164 pin- and-slot connected to the totalizer frame obscures the identification symbol for the totalizer not selected. The totalizer frame is mounted in a second frame 166 that is movable downwardly to engage the selected totalizer with the actuators, the horizontal position of the first frame relatively to the second being maintained by a roller 170 adapted to be positioned on one side or the other of a guide 171 and mounted on a lever 168 pivoted to the second frame and pin-and-slot connected to the first frame. The lowering of the frames removes the pin 159 from beneath a tail of a lever 174, which thereupon rocks clockwise to engage one of two notches 173 with a pin 176 on the link 154. The link 154 and cam plate 149 thus become locked during the first part of the operation, whereby, owing to the shape of the slots in the cam plate, only the key first depressed can be depressed to continue the operation after an interruption. Setting-means for non-additive data, locking. Account numbers or other subsidiary data are set up by differentially-positioning levers 44, Fig. 2, geared to indicator drums 47 and type-wheels 53. In order to lock these levers after the initiation of an operation and until the full cycle has been completed, teeth 54 on each lever co-operate with a lug 55 on an arm 56 urged clockwise by a spring 57 and adapted to be held in looking position by a slotted shaft 61 that co-operates with lugs 59 on' all the arms. In normal position, the slot 60 is in register with the lugs 59 and the levers may be adjusted. Now, upon the counterclockwise rocking of the release shaft 22, Figs. 1 and 2, to initiate an operation, a link 65, pin-and-slot connected to an arm 68 of the release shaft, is shifted to the right and through a toothed sector 64 rotates the shaft 61 to locking position. When an interruption occurs, the release shaft is restored clockwise, but the link is prevented from moving leftward to unlocking position by a blocking arm 76 that intercepts a pin 80 on the link. However, at the conclusion of the operation, a plate 71 on the main shaft 32 rocks a lever 74 connected to the blocking arm, to disable the latter and permit the link 65 and shaft 61 to return to normal position. Paper carriage. The carriage 103, Figs. 5 and 9, is provided with slots 108, 109 to receive slips of different size and is released to move out of the machine at each interruption of the operation to enable the impressed slip to be removed and a fresh slip substituted. The carriage is held in its inner position, against the action of an ejecting spring 133, by two bolts 130 each having a pin 129 projecting into an inclined slot 128 in a horizontallv slidable plate 119. Movement of the plate to the right by a hand lever 142 lowers the bolts to releasing position, this lever being locked during operation of the machine by a hook 147, Fig. 9, connected through shaft 97 and link 96 to the release shaft 22. To release the carriage automatically at each interruption of the operation, a bell-crank 114, Fig. 5, pivoted at 118 to the release plate 119, co-operates by a resiliently mounted pawl 113 with pins 112, 112<1>, 112<11> on a disc 111 fast on the main shaft 32. The pins are so positioned that, as the interruption occurs, the plate is shifted to the right to release the carriage. During the outward movement of the carriage, a rail 139 on its underside cams the bell-crank clockwise to permit the pawl 113 to escape the pin against which it abuts so that, upon the return of the carriage, the pawl is moved into the path of the next succeeding pin. Machine release, controlling by paper carriage and slip feeler. The release shaft 22, Fig. 9, is connected through an arm 95 and link 96 to a locking lever 99 having two shoulders 105, 107 for engagement by the weighted arm 102 of a slip feeler 101. When no slip is present, the feeler extends through a slot 106 in the carriage to the position shown, in which the arm 102 abuts the shoulder 107 and prevents machine release. When the carriage is out of the machine, the feeler abuts the underside of the carriage and presents the arm 102 to the shoulder 105, again locking the release shaft. However, with a slip present and the carriage in its inner position, the feeler assumes an intermediate position in which the arm 102 does not obstruct the lever 99 and the machine may be released.