Patent GB-682295-A (GB)
Abstract: 682,295. Accounting machines. NATIONAL CASH REGISTER CO. Jan. 22, 1951 [Jan. 28, 1950] No. 1600/51. Class 106 (i). A cash register or similar accounting machine comprises a record material printing mechanism, control keys, a primary feeding mechanism for feeding the record material to the printing mechanism, a normally effective disabling mechanism for the primary feeding mechanism, a control mechanism actuated under control of singleitem control keys so as to render the disabling mechanism ineffective, a secondary feeding mechanism differentially controllable by said single-item control keys so as variably to feed the record material, between successive actuations of the printing mechanism, in accordance with which control key is depressed, and a manually operable member operable in conjunction with a multipleitem control key and effective to disable the secondary feeding mechanism and the printing mechanism whilst the individual items of a multiple-item transaction are being entered. The invention is described as applied to the type of machine disclosed in Specifications 285,500, 318,466, [both in Class 106 (i)], and 370,496. The keyboard includes four transaction keys 21, 22, 23, 24, Fig. 6, each having a pin 28 by which it, when depressed, effects downward movement of a control plate 29 against a spring 30. An arm 32 on a shaft 33 is thereby moved away from a bail 34 on a shaft 35 to allow operation of the machine for one cycle. Each transaction key is associated with a corresponding totalizer. The keys 21-24 co-operate with a differential actuator segment 36 free on a shaft 37 and urged clockwise by a spring 38 against a differential operating rod 39 carried by arms secured to the shaft 37. A printer and indicator positioning segment 41 having two sets of teeth is associated with the segment 36 in known way. One set of tooth of the segment 41 meshes with a printer positioning gear 46 which positions a feed control segment 49. The gear 46 is connected to a gear 53, Fig. 1, which through gearing, positions an audit strip printing type wheel 55 and a ticket or slip printing type wheel 60. Ticket and slip feeding mechanisms. A control lever 65, Fig. 7, which may be set to Add, Read (sub-total taking) or Reset (total taking) positions has a segment 68 which sets a ticket feed control cam 69 connected to two type wheels, not shown, for printing symbols on the detail audit strip and on the ticket or slip. Free on a rod 52, Fig. 6, is a sensing arm 72 which is connected to a link 73 pivotally connected to an arm 74 secured to a shaft 75 which carries a lever 76 connected to a spring 77 which urges the arm 72 downwardly. The shaft 75 also carries an arm 78, Fig. 9, connected by a spring 79 to a printer control pawl 80 free on the shaft 75 and normally maintained against a stud 81 on a cam lever 82 which coacts with a cam surface 83 on a knife-operating cam 84 free on a shaft 85. A driving lug 86, Fig. 8, integral with the cam 84 has two shoulders respectively engaged by a driving pawl 87 and a retaining pawl 88 interconnected by a spring 91 and pivotally mounted on a plate 89 secured to a gear 90 which is free on the shaft 85 and which rotates for one counter-clockwise revolution each machine cycle. A stud 175 carried by a lever 174 is normally in the path of the pawl 87 to disengage the pawl 87 from the lug 86 and break the drive from the gear 90 to the shaft 85. Depression of any of the keys 21, 22, 23, however, effects downward movement of a slide 166 which through a linkage moves the lever 174 so that the stud 175 moves away from the pawl 87. The cam 84 has a groove 94 engaged by a roller 95, Fig. 9, carried by a lever 96 secured to a shaft 97. The lever 96 has a stud 98 embraced by a lever 99 integral with an arm 100 having a cam surface 102 which co-operates with a pin 103 on the link 73. The pawl 80 has a lug 104 which co-operates with a lug 105 on the ticket and slip feed segment 106 which through gearing drives two feed rollers 113, Fig. 1, which coact with two pressure rollers 114 carried by a lever 115. The segment 106, Fig. 9, is urged counter-clockwise against a stud 131 by a spring 130 acting through an arm 129, an arm 127 and a pin 126. The ticket strip is fed from a roll 133, Fig. 1, into a guide shoot 135, through a knife guide shoot 120, through a throat 140 of an upper guide shoot 143. A plate 146 normally blocks the throat 140. At the beginning of a ticket-printing cycle a cam 153 on a shaft 156 connected to the shaft 85, Fig. 9, rotates counter-clockwise and allows counter-clockwise movement of a lever 150, Fig. 1, to move the plate 146 inwardly to open the throat 140. A feed roller 154 then in cooperation with a pressure roller 155 feed the ticket strip through the throat opening 140 into the shoot 143. The rollers 154 carry an electro printing plate which prints descriptive data on the ticket. The pressure rollers 114 are then brought into engagement with the upper edge of the tickets strip, the knife blade 132 is moved to sever the ticket and at the same time a hammer 157 makes its first stroke to print the data indicated at 158, Fig. 3, on the ticket 61 and another hammer, not shown, prints the same data on the detail audit strip, Fig. 5, not shown. A cam 124, Fig. 9, then rotates to allow the spring 130 to move the segment 106 counter-clockwise to drive the feed rollers 113, Fig. 1, which feed the severed ticket upwardly. If either the key 21, 23, Fig. 6, is depressed a stud 70 on the segment 49 will be placed opposite a recess in the arm 72 and the arm 78 Fig. 9, will be moved clockwise to prevent movement of the pawl 80 so that the segment 106 will be allowed a complete swing before the second stroke of the hammer 157, Fig. 1, and only one impression is made on the ticket which is held in the shoot 143 by a spring finger 159. If, however, the key 22 is depressed the stud 70, Fig. 6, is positioned opposite a high portion of the surface of the arm 72 so that the arm 78, Fig. 9, will not be moved and when cam 84 rotates the pawl 80 will be allowed to move counter-clockwise and its shoulder 104 comes into the path of the lug 105 on the segment 106. The first stroke of the hammer 157, Fig. 1, again effects printing about the centre of the ticket. The segment 106, Fig. 9, is, however, arrested after a short feeding movement by the lug 104 and upon the second stroke of the hammer the data is printed on the upper edge of the ticket, Fig. 4, not shown. The cam 84, Fig. 9, then effects clockwise movement of the lever 82 which moves the pawl 80 to release the segment 106 to complete its movement. Slip printing. If it is desired that the second impression of the hammer 157, Fig. 1, be made upon an inserted slip instead of the ticket, the slip, Fig. 2, not shown, is first inserted upside down in the shoot 143 to rest on a bar 163, the position of which is adjustable. After the first impression has been made on the ticket, the ticket and the inserted slip are fed upwardly and upon the second stroke of the hammer 157 the data is printed on the upper edge of the slip. If it is desired that both impressions be made on the inserted slip the key 24, Fig. 6, is depressed, no movement is imparted to the slide 166, Fig. 8, and the stud 175 remains in the path of the pawl 87 which is disengaged from the lug 86 so that the shaft 85 and consequently the ticket feed roller 154, Fig. 1, are not moved. Listing. A lever 178, Fig. 8, movable between two positions, is used in conjunction with the key 24. When this lever is moved counterclockwise a lever 180 is moved so that a cam surface 185 thereon carries into the path of a stud 186 on a link 167 connected to the slide 166. The slide 166 and the keys 21-23 are thereby locked. Prior depression of a key 21, 22, 23, however, would have moved the slide 166 to place the stud 186 over the face 184 of the lever 180 to lock the lever 178. The lever 180 is yieldingly retained in either of its two positions by the engagement of a stud 181 on the lever 180 in either of two notches in a lever 182 urged counter-clockwise by a spring 183. The above counter-clockwise movement of the lever 180 effects through a lever 189 and bellcrank 191 movement of a slide 193, a projection 195 of which moves beneath a stud 196 on a lever 197, Fig. 1, and so retain the pressure rollers 114 in their ineffective positions. The lever 189, Fig. 8, has an extension 198 which latches over a stud 199 on the ticket and slip printing hammer 157 which is thereby prevented from moving. Duplicate slip printing. If it is desired to obtain a duplicate of the slip a lever 201, Fig. 6, is moved counter-clockwise to effect downward movement of the plate 29 which releases the machine as described above. Movement of the lever 201 also effects downward movement of a detent 208, Fig. 7, which prevents depression of any key 21, 22, 23, 24. The lever 201 cannot be moved after depression of any key 21-24. The detent 208 frees a lever 213 and the yoke 34 moves to release the machine for one cycle. The interaction of an extension 210 on the detent 208 and an arm 218 on the shaft 35 prevents movement of the lever 201 during total or sub-total taking, i.e. after movement of the lever 65, and prevents movement of the lever 65 after the lever 201 has been moved. Movement of the lever 201 also causes through a lever 222 and a stud 224 downward movement of the totalizer engaging link 225 which, in known manner, prevents " addition " during this cycle. Movement of the lever 201 prevents movement of the lever 174, Fig. 8, so that the pawl 87 is disengaged from the lug 86 and ticket feeding is thereby prevented. The cam 84, Fig. 9, does not rotate, so the pawl 80 remains stationary and the slip is given a long feeding movement by the segment 106. The consecutive number advancing mechanism is disabled during this operation. Feeding mechanism control during total and sub-total taking. Mo