Patent GB-191415599-A (GB)
Title: Improvements in Cash Registers and the like.
Inventor: HADDAN REGINALD
Filed: 1913-07-26
Granted: 1914-07-27
Abstract: 15,599. Haddan, H., [National Cash Register Co.]. July 26, 1913. Cash registers with operating - means. - In a cash register &c. having a number of counters separately totalizing the amounts in special transactions, the selected counter is thrown into engagement with its actuating-racks by means of a spring tensioned by the main operating - mechanism. The Specification refers to the machine described in Specification 17,196/13, and includes the description of the differential and transfer mechanisms. Keyboards and keyboard interlocks. -The stems of the amount keys 2 arranged in horizontal banks, and of the special-transaction keys 3, are formed with notches 17, 18, Fig. 3, adapted to be engaged by detents 16 fixed to rock-shafts 15 provided with rigid arms 19, Fig. 6, in contact with pins 20 on a spring- controlled slide 21. In order to prevent operation of the machine while a key is being depressed, or vice versa, this slide 21 is interlocked by means of a lug 25 co-operating with a recessed slide 27 geared to the main shaft 32. Machines with several item-value totalizers.- The separate special - transaction counters 130 are arranged in four groups of three, and each is mounted on a frame 128 pivoted at 129 and rocked for engagement with the actuating-racks 91 by means of a bar 141 connected by a link 144, Fig. 3, with the throwing-in shaft 33. When a special key 3 is depressed, it thrusts upwards the corresponding link 144, so that a shoulder 147 thereon is forced into a groove 148 in the shaft. When this shaft is rotated, the link and the bar 141 are actuated to throw in the counter and are held by a rocking-frame 186 engaging a pawl 145 on the bar 141. The link controlling the throwing-in of the grand counter is engaged with the grooved shaft whenever any of the special - department keys is depressed. This is effected through arms 182 which rest on each of the department-counter links 144 and are connected with the grand-counter link. The actuation of the shaft 33 takes place near the end of the forward rotation of the main shaft 32 and is effected by a spring 35, Fig. 6, when a detent 40 is removed by contact with the slide 27. Differential mechanism.-Below each key-bank is a shaft 29, Figs. 3 and 10, controlled by a coiled spring at its end and provided with arms 100 secured at different angles. Mounted on the shaft is a series of toothed segments 95 corresponding in number with the groups of counters and engaging the actuating-racks 91. The segments are connected to the shaft by a pin-and-slot arrangement and by springs 99, which are for the purpose of effecting transfer. When the keys have been depressed and the operation thus permitted to begin, a frame 112, pivoted at 113 and controlled by a cam 115 on the main shaft 32, descends and allows the actuating-racks 91, under the action of the springs on the shafts 29, to take up their differential positions as determined by contact of the depressed key-stems with the arms 100. On the return movement of the frame 112, the racks are raised to transmit the differential movements to the counters. Rotation of the shaft 29, when the key in thecorresponding bank has not been depressed, is prevented by a latch which is released when the key-stem is depressed by means of a pin 62 on it rocking a shaft 39. In order to prevent movement of the actuating-racks unless a special-transaction key has been depressed, the shafts 29 are held by a hooked plate 107, Fig. 6, which engages pins 102 on the arms 101 fixed to the shafts 29. The plate 107 is moved by the rocking of the shaft 74 effected by pins on the transaction-key stems. Transfer mechanism.-At the end of the operative movement of the machine, the springs 99 between the differentially-moved shaft 29 and the toothed segments 95 are tensioned by a slight rotational movement of the shaft due to the action of a sliding plate reciprocated by the main shaft 32. If a transfer is to take place, a projection 136 on the lower wheel, Fig. 3, pushes upwards a slide-bar 158, and a cam-slot 160 in this bar rocks a trip-lever 155 so as to release a lever 152, one end of which normally acts as a stop 151 for the next-higher actuating-rack. The removal of this stop therefore allows the spring 99 to raise the rack to add unity to the higher wheel. The slide-bar 158 is restored to normal position by a grooved shaft 162 rocked by the machine, and the stoplevers 152 are re-engaged by a rocking yoke 170. Spring-influenced racks 91<a>, Fig. 6, controlled by similar transfer slide-bars are provided for effecting transfer between the higher wheels of the counters. The actuating - racks are assisted in their descent by levers 124, Fig. 3, the upper ends of which may be engaged by bent projections 127 on levers 118 controlled by springs 117. The forward end of each lever 118 extends downwardly to such an extent that, when the restoring-frame 112 rises to lift the racks, it first engages and raises the levers 118, so that the influence of the springs 117 is removed from the levers 124 and therefore from the racks, which are thereby allowed to perform any transfer movements without restraint by these springs.