Patent GB-193356-A (GB)
Abstract: 193,356. Haddan, A. J. H., (National Cash Register C.). Oct. 6, 1921. Tickets, issuing; registering value of.-In a machine for issuing differently-priced tickets and registering their values, the depression of one of a set of keys produces a connection between a common operating-means and the corresponding ticket-issuing and registering section of the machine and simultaneously disconnects the previously active section. The invention is set forth as applied to the machine described in Specification 193,082 wherein a number of insertible printing and registering elements are provided and a selected set of these are placed in position in the machine for printing tickets of different prices and registering their values both in the insertible element and on a grand totalizer carried by a separate insertible element. Keyboard mechanism; motor operation. For each section of the machine there is a plunger key 65 which, when depressed, effects connection of that section with the main operating-mechanism. The keys have pins 75 working in fixed slots 176 and in angular slots 84 in an endwiseslidable detent plate 81 controlled by a spring 86. Depression of more than one key at a time is prevented by a crowding lock composed of slidable end-to-end chamfered plates 91 spaced to permit entrance between them of one pin 75 only. When a key is depressed the inclined portion of the slot 84 produces a preliminary longitudinal displacement of the detent plate until a pin 96 slips past the lower corner of the plate whereupon spring-controlled arms 95, 100 complete the longitudinal movement of the detent plate and through a link rock a shaft 114, Fig. 1<B>, to trip a spring-controlled arm 117 connected with the motor-release mechanism. The detent plate thus serves to lock the depressed key and prevent actuation of any other key. Towards the end of the rotation of the main shaft 52, a cam on it restores the shaft 101 to its normal position and this allows the detent plate to return under the action of its spring 86 and release the key. At the same time the shaft 114 is rocked back again to reset the trip upon the arm 117 which meanwhile has been rocked to permit of this by another cam on the main shaft. Differential-mechanism. For each section of the machine there is a series of actuating sectors 161, in this case three in number representing units and tens of cents and units of dollars. Each sector is normally locked by a cam .controlled pawl 213 and carries a latch plate 162 pivoted at 164 and provided with a pin 171 normally resting in a notch 172 in a toothed driving sector 163 loose upon a shaft 154. Adjacent to the driving sector is mounted a similarly toothed sector 173 fixed to the shaft 154. A broad toothed pinion 175 mounted on a rocking frame 188 is adapted to be thrown into engagement with the contiguous sectors 163, 175 and thus convey the drive from one to the other and so to the actuating sector 161. Arranged above the sectors is an arcuate member 155 provided with a cam surface 178 terminating in a notch 182 and stop 179. The arcuate member is set to the price of the ticket to be issued so that when the differential mechanism is driven a roller 165 on the latch plate 162 meets the stop 179 and is thereby rocked to break the driving connection between the sectors 163, 161 when the actuating sector 161 has travelled to the extent corresponding with the price set. In the return movement of sector 163 the latch is picked up by the nose 183 and the parts restored to normal condition. Actuation of grand totalizer. To the actuating sectors 161 of each section are pivoted rods 222 each formed with a notch 223 to seize a pin 224 on each of a series of arms 225 connected through rock shafts 189, 202, 197 and arms and links with actuating sectors for the grand totalizer. The lower ends of the pivoted rods 222 are controlled by cam slots 227 in pivoted plates 228 connected by pin 242 and inclined slot 243 with the key-stem. When a key is depressed therefore, these connections cause the rods 222 to swing into engagement with the pins 224 to effect actuation of the grand totalizer in correspondence with a movement of the actuating sectors 161 for the sectional totalizer. Key-selection of operative section. The depression of a key produces (1) the connection between the corresponding differential actuating- mechanism and the grand totalizer as stated in the preceding paragraph, (2) the rocking of the broad pinions 175 into gear with the sectors 173. 163, this being effected by link 198, arm 196, pin 195, and cum slot 194, and (3) the driving connection between the ticket printing and issuing mechanism and the main shaft. To effect this last result, the rocking of the arm 196 draws forward a link 286 pivoted to a rocking arm 285, a nose 288 on which first rocks a pawl 268 on an adjacent arm 266. This preliminary movement is also conveyed through a link 269 to a second pawl 267 to bring the nose thereof into juxtaposition to a pin 257 mounted on a rock arm 258 and engaging a cam slot 256 in a frame carrying a broad pinion 248 for connecting neighbouring gear wheels 246, 247 in train respectively with the main driving shaft and the ticket printing and issuing mechanism. The continued counterclockwise movement of the arm 285 therefore through the pawl 267 and pin 257 rocks the frame and effects the driving connection, at the same time removing the locking pawl 254 from the gear wheel 247. The disposition of the slot 256 is such that the parts remain in their operative positions until the key of another section is depressed whereupon since all the arms 266 are fixed to the rock-shaft 118 the pawl 268 of the last-operative section not being displaced by its arm 285 engages with its nose 301 a pin 264 on an extension of the arm 258 and so returns this and the broad pinion 248 to normal inactive position.