Patent GB-191207493-A (GB)
Title: Improvements in Machines for Automatically Computing and Ejecting Change and in Cash Registers Combined therewith.
Inventor: HADDAN REGINALD
Filed: 1912-03-27
Granted: 1913-03-27
Abstract: 7493. Haddan, R., [National Cash Register Co.]. March 27. Money-delivering apparatus.-Relates to improvements in machines for automatically computing and ejecting change and applicable in connexion with cash registers. According to the invention, only one set of manipulative devices is employed, successive operations of which, in accordance with the deposit and sale amounts, control in opposite senses selectors for automatically determining the amount of change to be given. The change-ejecting devices are arranged to be operated by the movement of the cash drawer, which also restores to zero position the change - selecting mechanism. A device is provided to prevent the delivery of change if the purchase amount exceeds the deposit amount, as indicated on the manipulative devices. The invention also comprises an improved selecting-device for delivering fivecent coins or nickels, this device being made part of the dimes selecting - mechanism. A printing-mechanism controlled by the manipulative devices is provided, the deposit and purchase amounts being spaced in pairs on the record strip. In Fig. 1 the invention is shown applied to a known type of machine having a series of amount keys 12, Fig. 2, operating segments 17 differentially, these segments being arranged to actuate counter wheels 17<a> to add the desired amount on the counter. Each registering segment 17 is secured by a suitable cross-connexion to a corresponding segment 18, Fig. 4, which controls the change-selecting gear. Fig. 7 shows a plan view and Fig. 16 a section of the selecting-mechanism, The segments 18 gear with pinions 22, 26. The pinions 22 are connected by sleeves to larger pinions 21, which gear with pinions 27 on the same shaft as pinions 26, both pinions 26, 27 being loose on the shaft and compelled by means of this gear to move in opposite directions. Pinions 26 are rigidly connected to pinions 28, and pinions 27 are rigidly connected to pinions 29, the mechanism being similar for cents, dimes, and dollars. Between each pair of pinions 28, 20 is mounted an additional pinion 30 controlling the change-selecting mechanism directly. These pinions 30 are turned in opposite directions by successive deposit and purchase operations of the keys 12 by means of the pinions 28, 29, to which they are successively connected through a series of gears 31 mounted loosely on a rod 32, which is given a sliding-rocking motion to throw the pinions 31 into gear with the pinions 28, 29 successively. The requisite sliding motion of the frame 77 carrying the rod 32 and the pinions 31 is obtained by means of a cam 69, Fig. 13, operated from a shaft 61, Fig. 4, which at each operation of the keys is given a complete rotation by the action of the key coupler 60 and a rack mechanism, the cam 69 being thereby rotated half a revolution through suitable gear. The requisite rocking motion of the frame 77 is obtained by cams 81, 82, Fig. 11, on the shaft 61. The pinions 30, Fig. 16, are rigidly connected to their selectors 41, 42, 43 for the dollars, dimes, and cents respectively, and these selectors are rotated in either direction to positions determining the amount of change to be given. The cents selector 43, Fig. 8, is rigidly mounted on a sleeve 38 under a controlling-arm 101 connected by a sleeve to an arm 100, which supports a bent bar 106 extending under the cents receptacle 107 and serving to raise and lower the coin stack therein. The dollars selector 41 has similar connexions, the machine being adapted to change amounts up to five dollars. In the case of the cents and the dollars, the machine is arranged to eject from one to four of each kind of coin at once, but with the other kinds only one coin is ejected, so that no mechanism for raising or lowering the other coin stacks is necessary. The dimes selector 42 is provided with two sets of oppositely - arranged steps adapted to control the ejection of five, ten, and twenty-five cent coins. and also with a cut-away portion 121<a> adapted to control the ejection of a fifty - cent coin. The steps on the dimes selector 42, Fig. 7, limit the lateral movements of a slide 121, Fig. 14. which is provided with sets of notches so arranged as to control the ejectors. To provide for the ejection of nickels, the slide 121 has an additional controlling-mechanism under the control of the nickels selector 44, Figs. 7, 15, and 16, which allows an additional half-step movement, thereby permitting the ejection of an extra nickel when necessary. The slide 121 is connected to a slide 213 having a vertical extension 217, which supports a plate 218 having a square pin 219 projecting through a slot in the plate 217 and adapted to engage the stops on the dimes selector 42, Fig. 7. Rollers carried by pins 220, 221 are secured respectively to the extension 217 and to the plate 218, and engage in two cam-grooves 222, 223 in the nickels selector 44, Fig. 15, which is splined on a sleeve rigid with the sleeve 38, Fig. 16. If an amount. from five to nine cents is registered as a deposit, the separating portions of the cam-grooves pass these rollers, forcing them apart; but as the slide 217 carrying the roller 220 is rigidly held until moved positively, the roller 221 is caused to move to the right, carrying with it the slide 218 and the projection 219, which is thereby spaced half a step further from the dimes selector. Consequently the determining slide 121 will be given an additional half-step of movement, bringing a different combination of notches over the ejectors. The positive movement of the slide 121 is effected by the opening movement of the cash drawer, which rocks a sleeve 198, Fig. 7, operating a crank carrying a roller 231, which rides in a cam-groove 216 formed in a plate 215. The plate 215 is connected by a spring 236 with the extension 217 of the slide 121. The determining-arms 101, Fig. 8, of the other selectors are also operated by the opening of the cash drawer. A rack 176 on the drawer, Fig. 4, operates a gear 177 on a shaft 178 carrying a gear 179, Fig. 6, meshing with a large mutilated gear 180. A cam-groove 191 in the gear 180 operates an arm 193 connected by links and arms to a shaft 201, Fig. 8, which is thereby rocked, and pins 203 carried bv arms 202 secured to the shaft 201 are caused to release the various determining-arms 101, permitting them to engage the selecting-devices and so to control the coin stacks. The cash drawer, by means of the gear 180, also operates the ejecting - mechanism. This drawer is arranged to be locked in at its inward position and to be released only at the end of the second operation of the keys. As the drawer moves outwards, the ejecting-mechanism is moved to an operative position, and as the drawer is pushed back the ejectors are forced under the coin stacks and eject the proper amount of change, this return movement of the drawer also serving to restore the selecting-mechanism to zero position, as described later. A gear 68, Fig. 6, is given half a rotation at each operation of the keys, and a square pin 151 carried by this gear is arranged, when the purchase amount keys are operated, to depress a bar 162, thereby rocking a shaft 165 carrying an arm 166, Fig. 4, which carries down with it a bell-crank 168 and releases the drawer. The movement of the cash drawer rotates the gear 180, Fig. 6, as described above, and a cam-groove 185 in this gear operates a lever 182, which, during the latter half of the opening of the drawer, draws the ejectors rearwards by rocking the shaft 187, Fig. 8, and during the first half of the return movement of the drawer pushes them forward to eject the coins. The latter part of the return movement of the drawer is utilized to restore the selecting-mechanism to zero position, the various selectors being connected through suitable gear with restoring-segments 241, Fig. 6, controlled by bell-cranks 244, 245 having pins 246, 247 engaged by arms 194, 193. These arms are made to release the bell-cranks 244, 245 by a pin 195 on an arm 251 operated by the key coupler. When the cash drawer is opened, the arms 194, 193 are raised by the cam-groove 191 until they snap over the pins 246, 247, and during the return movement of the drawer thev rock the bell-cranks 244, 245, thereby restoring the segments 241 to zero position. Transfer mechanism of a known type is employed between the several denominations of the selecting-mechanism, and to prevent the ejection of change when the registered purchase amount exceeds the deposit amount a device comprising arms operated by a cam secured to the dollars selector is employed, which prevents any movement of the determining-devices when the dollars selecting-device is moved from its zero position in a subtracting direction. For the same purpose, the dimes determining-slide 217 is provided with a lug 218<a>, Fig. 7, which can be obstructed by an arm operated by a cam when the cam is rotated in a subtracting direction. To provide a printed record of the transactions, the selector - controlling segments 18, Fig. 4, operate gears 271 secured to sleeves carrying printing- wheels 272 at the right-hand end of the machine, Figs. 1 and 3, where a cam 273 on the shaft 61 operates the platen 274. The key coupler trunnion 252 carries at its outer end an arm 275 holding a pawl 276 for feeding the record strip through a ratchet - wheel 277 carried by the winding-roll 278. This mechanism provides for printing both the deposit and purchase amounts and for feeding the paper after each operation of the keys, and in order to provide extra spacing between the pairs of amounts, the arm 182, Fig. 6, carries a pin 279 which supports at its outer end a pawl 280, Fig. 3, engaging a ratchetwheel 281 on a gear 282 connected through a gear 283 with a gear 284 rigid with the feedroll 278. The registering - device or totalizer, which is operated by the segments 17, is arranged to be actuated onl