Patent GB-635594-A (GB)
Abstract: 635,594. Cash registers. NATIONAL CASH REGISTER CO. Aug. 11, 1947, No. 22214. Convention date, Feb. 15. [Class 100 (iv)] [Also in Group XIX] A cash register or similar accounting machine adapted to record data on an issuing record material includes, in combination, a receptacle movable from a closed or operating position to a more accessible position, impression and record material feeding mechanisms in the receptacle, individual members supported by the receptacle, one associated with each of said mechanisms, connections coupling said members for unitary operation, and an operating mechanism co-operating with the members, when the receptacle is in closed position, to cause the printing and feeding mechanisms to be operated. In the embodiment described, the invention is applied to a key set and operated type of cash register, in which during each machine operation an oscillating movement is imparted to a key coupler 42, Figs. 3 and 4, which serves to return the depressed keys to their normal positions. A full-stroke mechanism comprising a pitman 46, Fig. 4, pivoted on an arm 45 secured to an end of the key coupler 42, a ratchet-wheel 49 and a bar 53 is provided and operates as described in Specification 534,146. The fan-folded record material 129, Figs. 2 and 21, forms a rectangular package 150 contained in a drawer 151, Figs. 1 and 2, having a front door 154 and a top door 155. The drawer 151 is slidable from an " out '' position, shown in Fig. 2, to an " in position back through an opening 156 in the cabinet 34 on parallel rails 157. In the " out " position the weight of the drawer is sustained by railengaging studs on downward extensions 159 on. each side 153 of the drawer. Hooks 175 extending up from the rails 157 limit the outward movement of the drawer, but a gap 163 is provided in the rails to permit of complete withdrawal of the drawer. The front door 154 has secured thereto two side brackets 164 by which the door is normally latched in closed position but which may be unlatched to allow opening of the door 154 when the drawer 151 is in the " out " position. The top door 155 is hinged on a pin 173 and may be opened when the drawer is " out " when it is desired to guide the record web 129 over the guide plate 174, the impression hammers 79, 122. the feed rollers 176 and the guide 177. The left side 153, Fig. 1, of the drawer has a stud 185 which pivotally supports an impression operating arm 186, Figs. 7 and 9, having a stud 190 engaging a vertical slot 189 in a record feed operating arm 187 having a slot 188 engaging the stud 185. The arm 186 has a finger 191 and the arm 187 a shoulder 193 which, when the drawer 151 is in its " in " position, embrace a stud 192 on the lever arm 45. The oscillating movement imparted to the key coupler 42 and its arm 45 every machine operation is transmitted by the stud 192 to the arms 186, 187. The arm 186 has at its top end a stud 228 which supports a pawl 227 having a shoulder 226 on which the end of an arm 221 normally rests. The arm 221 is free on a rod 218.and has an extension 220 spring urged against a shoulder 219 on the operating arm of the hammer 122 connected thereto by a spring 222 and normally rests on a stop 224. The pawl 227 is engaged by an ear 231 of an arm 230 free on the stud 228 and having a cam slot 232 which embraces a stud 233 on the adjacent side of the drawer 151. The arrangement is such that during a machine operation when the arms 186. 187 are oscillated, as described above, the pawl 227, the arm 230 and the arm 221 are lifted until by the action of the cam slot 232 and the stud 233 the pawl 227 is moved clockwise to free the arm 221 to the action of a spring 223 which pulls the arm clockwise until it is arrested by the stop 224. The operating arm of the hammer 122 continues under its own momentum and the record strip is thereby impressed against the electro 121. In the same manner and immediately thereafter the hammer 79 is operated to impress the strip against value type wheels 75 and coaxial consecutive number type wheels which have been set as described later. A downward extension 239 of the operating arm of hammer 122 has an ear 240 normally engaged by a pawl 242 but which is disengaged therefrom during operation of the hammer. During the return of the hammer, the ear 240 is again engaged by the pawl 242 to prevent rebound of the hammer. A latch 245 resiliently connected to the pawl 242 determines the two positions of the pawl. Motion of the arm 187 is transmitted by a link 195, Figs. 7 and 9, to a segment 197 which meshes with a pinion 252 secured to a disc rotatable on a shaft 254 carrying two feed rollers 176, one of which is shown. The pinion 252 carries a pawl which co-operates with a drum secured on the shaft 254 to impart a complete rotation thereto upon the return stroke of the segment 197 and so feed the record strip 129 past a knife 265, Fig. 2. Two pawls 260, 261 serve to locate the shaft 254 in its normal position. The link 195 has a slot 199, Figs. 7 and 9, engaged by a stud 200 on a pivoted on-and-off lever 201 normally urged clockwise into a position in which (a) the stud 200 abuts a right-angled bracket 211 on a fixed frame plate 21, Fig. 1, so preventing outward movement of the drawer 151 and (b) the lever 187 is maintained down so allowing operation of the above-described printing and issuing mechanisms. Downward movement of the lever 201 to the " off " position removes the stud 200 from the bracket 211 and allows outward movement of the drawer and, by raising the arm 187, prevents operation of the printing and issuing mechanisms. Movement of the lever 201 during a machine operation is prevented by the engagement of a slot 208 in the arm 187 and a fixed stud 209. There is also provided a five-position control lever 117, Fig. 12, which through a pinion 115 determines the position of a disc 113 having a cam slot 112 engaged by a pin 111 on a lever 109, Figs. 12 and 13. With the control lever 117 in any of its first three positions the lever 109 is, through the above mechanism, positioned so that studs 204, 206 carried thereby abut an ear 205 of the arm 187 and a bracket 207 secured to the drawer respectively to prevent upward movement of the arm 187 so preventing printing and issuing and to prevent outward movement of the drawer. Movement of the lever 117 into either of its other two positions (Read and Reset) causes the studs 204, 206 to leave the ear 205 and the bracket 207, respectively, allowing the lever 201 to effect its control as described above. Inking ribbon mechanism.-The inking ribbon 123, Fig. 7, is wound and unwound between reversible spools 124, 125, and is guided over the impression hammers 79, 122 and is shielded from the record strip 129 by a shield 128. The spools 124, 125 are provided with ratchet-wheels 130, 135 engageable by pawls 132, 137 pivoted to an arm 134 free on a shaft 66. A stud 139 on the arm 134 engages a cam slot 140 in an arm 141 also free on the shaft 66 and normally urged upwardly so that its top end is in the path of a stud 145 in an arm 143 free on the shaft 66. The arm 143 has a cam slot 146 engaged by a stud 147 in a link 93 connected to a lever 94 having a pin 266 which engages a notch 267 in the arm 186 when the drawer is in its " in " position. The lever 94 is thereby oscillated during every machine operation and this movement is transmitted by the link 93 to the arm 143 which is rocked counterclockwise then clockwise. The counter-clockwise movement of the arm 143 is transmitted by the stud 145 and the arm 141 to the lever 134 causing the pawl 132 to leave the ratchetwheel 130 and the pawl 137 to " step-on " the ratchet-wheel 135. When the ribbon is fully wound on the spool 125 the resistance offered to the pawl 137 causes the stud 145 to slip over to the other side of the top of the lever 143 so that during the return clockwise movement of the lever 134 in every machine operation the spool 124 is " stepped-on " to rewind the ribbon thereon. The printing hammer 79 co-operates with value type wheels 75 and coaxial consecutive number type wheels 80, coaxial with the wheels 75, and the hammer 122 co-operates with an electro 121. The value type wheels 75 correspond in number to the denominations and are set through gearing in accordance with the differential movement imparted to a rod 57, Fig. 3, by a slot 56 at the rear of the depressed keys and are aligned before being struck by the hammer 79. The consecutive number type wheels 80 each have integral therewith a ratchetwheel and that which corresponds to the units denomination is " stepped-on " at every machine operation by a pawl operated through linkage from the lever 94. Transfer between the wheels 80 is effected in known manner. The type wheels 80 may be reset to zero by manual operation of a pivoted lever 98, Figs. 2 and 13, having teeth which mesh with a pinion 101 on the shaft 76. The lever 98 is normally locked by engagement of a shoulder thereon with a roller 104 on an arm 105 controlled through linkage by the lever 109 which is set by the control lever 117.