Patent GB-541875-A (GB)
Abstract: 541,875. Cash registers. NATIONAL CASH REGISTER CO. May 9, 1940, No. 8347. Convention date, May 12, 1939. [Class 106 (i)] In machines having a plurality of registering mechanisms each including an individual cash drawer and alarm, and selectively operable means adapted to select a particular registering mechanism for operation, the provision of a single rotatable member differentially rotated upon operation of said selectively operable means to select both a cash drawer and a related alarm corresponding to the registering mechanism selected. General arrangement.-The key set and operated machine to which the invention is applied is described in Specifications 458,087 and 534,146. It has two cash drawers 69, 70, each normally locked' closed by a latch against a spring tensioned lever 122 tending to force it open. The keys 71 are pivoted on a shaft 72, a weighted keycoupler 74 pivoted on rod 73 lying across the keys. Attached to the right end of the key coupler is a plate 75 having pivoted on it a double rack 76 co-operating with a pinion 77 secured to a main shaft 78, Fig. 6, so as to drive it counter-clockwise one complete rotation for each oscillation of the key coupler. The keys performing differential functions have cam slots 87 which co-operate with an associated bar 88 fixed to an arm 89 of a segment 91 pivoted at 90. There are two totalizers, 98 or A and 99 or B. The A totalizer is normally engaged with the differential racks 96 at each machine operation, whether the A clerk's key is depressed or not, while to engage the B totalizer the B kev must be depressed. The racks 96 are operated through gearing from the segment 91. Drawer mechanism.-The drawer latches 171. 172 on shafts 175, 176 engage latch plates 173, 174 on the drawers. When the latch 171 or 172 is operated by rocking shaft 175 clockwise, Fig. 8. the drawer is released and a spring pawl 178 moves to hold the latch open until the drawer is closed. On the left hand end of shaft 175 is an arm 183 to which is pivoted a link 184 with a hook 185 engaging between collars on the main shaft 78. A stud 186 extends from the hook to be engaged by a cam 187 which lifts the hook near the end of a machine cycle. Secured to the inner ends of shafts 175, 176 are arms 190, 189 pivoted to links 195, 196 each hooked to engage the shaft 78 similarly to link 184. The link 184 is selectively coupled to either link 195, 196 by means of a cam 191 positioned by department control mechanism. The cam engages the bifurcated end of a lever 193 pivoted to link 184 at 194 and hooked at 198 to engage a stud 197 on the link 196. Secured to pin 194 is a hook 294 adapted to engage a stud 199 on link 195. Thus when the cam rocks the lever 193 one or other link engages its stud so that link 195 or 196 moves up with link 184. The shaft 192 is positioned by the department key and cam plate 111. A modification shows an arrangement of latches for drawers above one another. Alarm mechanism.-Of the A, B department bells 216, 218, the B bell 218 is mounted eccentrically to A. The gear 227 on shaft 192 meshes with teeth on the rear end of segment lever 225 pivoted at 90 the front end having a stud engaging a bifurcation on arm 223. In rest position the nm of A bell is slightly farther from the arm of the bell hammer 228 than that of the B bell, but the right portion of the hammer is of larger diameter than the left so that the bell A only is struck. When the B bell is rotated by movement of shaft 225, the left half of the hammer is active and the A bell is silent. Pivoted at 231 to plate 75 fast to the key-coupler is a lever 229 held by a spring 230. As the coupler is raised, the stud 231 pivots about 73 and an ear 233 engages a positionable guide 232 causing the lever 229 to rock and tension the spring 230. When the ear reaches the top of the guide the hammer is tripped and overthrows its home position to strike the bell. The guide member 232 may be moved rearwardly from the path of ear 233 and the bell is not struck. By turning the shaft 73 by means of a handle 237 the bell may be made operative or inoperative. Two locks 292, 293 control the "A" and "B" clerk's keys as described in Specification 541,181 and a single control lever 170 with lock 319 may be locked in one of five positions. This lever 170 co-operates with a pinion 320 on shaft 238 to turn it differentially and position a cam 323 which co-operates with levers 325, 327 to position a lever 329 the bent over end of which has a notch through which ear 333 may pass in "open drawer" position. When lever 170 is in " reset position" the levers 195, 196 are lifted and both drawers unlatched independently of main operating means.