Patent GB-288607-A (GB)
Title: Improvements in or relating to cash registers
IPC: G06C7/10
Filed: 1928-04-11
Abstract: 288,607. Remington Arms Co., Inc., (Assignees of Green, C. W.). April 13, 1927, [Convention date.]. Cash registers.-The improvements in a key set and operated cash register relates to the totalizer engaging, transfer and zeroizing mechanisms, the supervisor's control lever and keys and the corresponding coupler and main shaft mechanism. The transfer pawls of the totalizer are guided in their transferring movement by a slotted shaft that also serves to re-set the pawls when not intended to effect transfers. Actuating-mechanism. Each bank of keys con'rols totalizer-actuating pack frames 47, 52. 54, Figs. 1 and 2, through complementally arranged steps 51, 58 on the keys co-operating with cross-bars 48, 57 on the frame, whereby the frame is differentially and positively operated and arrested. The frames 52, 54 corresponding with the dimes and cents bank of keys, respectively, are loosely mounted on the shaft 42 and control totalizer-actuating racks 53, 55 rotatable on the shaft. The frame 47 corresponding with the dollars bank operates a third rack 50 through the shafts 42 to which both are fixed. Each frame is positively restored to normal position upon release of the keys by a bell-crank lever 60 61 mounted on the key-carrying shaft 33, one an 60 of the lever being engaged by the keycoupler 39 while the other arm engages the crossbar 57. The key-coupler 39 is supported by end plates 40, 41, Figs. 1 and 13, rotatably mounted on the shaft 42, the latter plate co-operating with a full stroke pawl 45. Totalizer-engaging mechanism. The totalizer shaft 74, Figs. 1 and 2, is supported in a frame 71 rockably mounted on pins 77 within a fixed frame 67, and is moved during the depression of the keys to cause the pinions 76 to engage the corresponding racks by an arm 78, Figs. 1 and 3 (Cancelled), loosely mounted on the shaft 42 and rotated by the key-coupler 39. Pivoted on the upper end of the arm 78 is a switching cam-plate 85 attached to a plate 82, the movements of which are limited by stop shoulders 83, 84 coacting with a lug 79 on the arm. A lever 88, pivoted at 89 to the fixed frame 67, is slotted to engage the spindle 74 of the totalizer and is provided with a pin 90 that normally rests on a lug 80 on the arm 78. During the depression of the keys, the arm 78 moves counter-clockwise, Fig. 3, and pin 90 engages with the underside of the cam plate 85, thereby rocking the totalizer downwardly into actuating position. At the end of the stroke, the pin engages beneath the lug 79, and the cam plate is returned by a spring 86, the latter action being enforced by the wedging action of the pin 90 on the sloped shoulder 84. Upon the release of the keys, the pin 90 is forced upwardly, thereby rocking the totalizer into inoperative position, and returns to its normal position along the upper side of the cam-plate 85. The extent of movement of the totalizer is limited by a fixed stop 93 coacting with shoulders 91, 92 on the lever 88. Transfer mechanism. At transfer a shouldered trip pawl 117, Fig. 6, is knocked from under a transfer pawl 120, and allows the transfer pawl to drop under the action of a spring 128 into engagement with a ratchet wheel 125, the movement of the transfer pawl being enforced by a pin 1171 on the trip pawl engaging the transfer pawl. Each transfer pawl is pivoted on an actuating lever 122 mounted on a shaft 123, and is provided with a lug 119 that, at the end of each transferring movement of the pawl, engages the lever 122 to maintain the pawl in engagement with the ratchet wheel 125 to prevent overthrow. Alternatively or additionally, overthrow may be prevented by the pin 1171, the notch 1200 in the pawl being dispensed with. Transfer is effected during the return of the keys by arms 126, Fig. 4, the slotted free end of which rests on a shaft 97 rotated by the key coupler, which shaft carries staggered cams 127. The return of the arms 126 after the initial idle rocking is ensured by fingers 134 that depend from a spring-pressed plate 132 and bear on the arms. Zeroizing-mechanism. The totalizer is re-set by pawls 206, Fig. 4, on the wheels, and a slot in the shaft, when this is rotated by a key inserted through a slot in the casing and engaging the free end of a link 207, Fig. 2, pivoted to the shaft. Rotation past the zero position is prevented by stops 222, 223 on the link 207 and casing respectively. Before the key can be removed, it must be backwardly rotated to bring a projection on the key into register with an aperture in the wall of the slot, during which rotation a cam 214 on the shaft 74 rocks a slotted shaft 219, Fig. 6, thereby re-setting the transfer pawls 120. Drawer-release by operation of machine. The cash-drawer 175 is released on the return movement of the keys by a pin 168, Fig. 10, depending from the key-coupler 39, engaging a trip pawl 169 mounted on a lever 170, which is thus rotated to release a drawer catch 172. Proprietor's control mechanisms. A control lever 180, Fig. 10, is connected by a link 197 to a pivoted plate 198 positioned by a spring-pressed pawl 201. The latch of a lock 202, having a removable key, engages the pawl 201 to lock the lever in any desired position. The aperture in the casing that admits the re-setting key is closed by the plate 198 unless the lever is in " Re-set " position when a slot 211 in the plate registers with the aperture. A shutter 193, Fig. 1, normally screens the totalizer reading aperture 191 but is retracted by a slotted link 195 when the lever is moved to " Re-set " position. The control lever 180 is fixed to a shaft 181, Fig. 10, on which is freely mounted a locking arm 182 having a shoulder 183, that co-operates with a keycoupler 39, and a downward extension 182<a> to contact with the drawer 175. The arm 182 is normally drawn forward, when the drawer is open, by a spring 184 to engage the coupler and thereby lock the machine. In the " Open drawer " position of the control lever, the locking arm 182 is held in inoperative position by the engagement of an arm 185, fixed to the shaft 181, with a lug 186 on the arm 182. In the " Closed drawer '' position of the control lever, the arm 185 is rotated sufficiently to allow the arm 182 to function. In the " Lock register " position of the control lever, the locking shoulder 189 of a lever 188 that is connected to an upward extension 187 of the arm 185 by a spring 190, co-operates with the coupler to lock the machine. In the " Reset " position of the control lever, the machine remains locked, but the arm 185 engages a stud 204 on the drawer-catch release lever 170 to trip the latter and allow the drawer to open, thereby affording a manual release for the drawer. The Specification as open to inspection under Sect. 91 (3) (a) comprise also improvements in indicators, an alternative construction of totalizerengaging mechanism, and means for preventing the simultaneous depression of two keys of a bank. The last-mentioned means comprise a plate 35,. Figs. 1 and 10 (Cancelled), slotted to guide therearward ends of the keys and provided at its upper end, which is of channel section, with a series of wider stops within each of which a depending key-stop 62 is pivotally retained. Indicators. The tablet indicators are arranged in parallel groups of three and have their stems offset to engage the ends of the keys. The stems 140, Fig. 1 (Cancelled), are each provided with two slots 143, 144 separated by a bridge 145. A retaining bar 146 mounted on a shaft 148 is provided with two series of fingers 149, 150 adapted. normally to engage the lower and upper slots 144, 143 in the stems, respectively. During the depression of the keys, the bar 146 is rocked by the tripping action of an extension 154, Fig. 13, of the key-coupler supporting plate 41, which engages the end 153 of a sliding member 151 pivoted to the bar 146, and thereby allows the bridges 145 of the elevated indicators to pass the corresponding fingers 150 which then retain the indicators in position. A bell hammer 159 pivoted on the plate 41 is tripped by a stud 162 to strike a bell 158 when the machine is operated. Totalizer-engaging mechanism. The device for rocking the totalizer comprises a segment rack 95, Fig. 5 (Cancelled), loosely mounted on the shaft 42 and operatively connected to the keycoupler 39. The rack drives a pinion 96 fixed to a shaft 97 and thereby rotates an arm 98 provided with a wipe pawl 99 that co-operates with studs 101, 102 on a lever 100, to rock the latter about the shaft 42. The movement of the lever 100 is communicated to the totalizer by the engagement of a cam-slot 103 in the lever with a pin 104 on the totalizer frame 71. The lever 100 is positively retained in each of its positions by the engagement with a stop 109 on the lever, of a stop 108 on a spring-pressed arm 107 pivoted at 105. At the beginning of each rocking of the arm 98, the free end 112 of the arm engages one of two spring-urged pawls 110, 111 mounted on the arm 107, thereby raising the latter to free the lever 100. This subject-matter does not appear in the Specification as accepted.