Patent GB-528737-A (GB)
Abstract: 528,737. Typewriters &c. NATIONAL CASH REGISTER CO. March 9, 1939, No. 7617. Convention date, March 9, 1938. [Class 100 (iv)] [Also in Group XIX] A cash register or similar accounting machine has laterally-immovable type members divided into groups, a separate hammer for each group which hammers are operated successively, and means for interrupting a machine operation to perm't the successive insertion of a plurality of record materials on which identical data is to be printed ; record material holding means are moved between successive operations of the hammers for selecting the columns in which entries are to be made. The invention is described as applied to a machine of the kind wherein each item-entering operation is interrupted twice to enable consecutive prints from a single line of type-wheels to be made on a slip, Fig. 15, a ledger card, Fig. 14, and a passbook, inserted into the machine in the order stated. The balance is then calculated by the operator and printed in a second operation similar to the first. The type-wheels are axially immovable and co-operate with two printing hammers, one for the amounts and the other for the non-additive data, column-spacing of the items and balances being effected by automatic adjustments of a record - material carriage relatively to the type-wheels, under the control of transaction keys. The slip, Fig. 15, is printed in the first part of an item-entering operation, the hammers being simultaneously operated to print deposits and withdrawals in the same column. The ledger card, Fig. 14, is printed in the second part of the operation, the hammer for the non-additive data being first operated, after which the carriage is column-spaced or not, according as to whether the item is a deposit or a withdrawal. The amounts hammer is then operated to print the item in the appropriate column and the carriage, if shifted, is restored to normal position. In the third part of the operation, which is a replica of the second, the pass-book is printed and the keys released. In balance-entering operations, the carriage is column-spaced two steps at the beginning of the first part of the operation and remains in that position until the end of the operation to enable the balance to be printed in the right-hand column of all three record materials. Actuation of the hammer for the non-additive data is suppressed under the control of the carriage in balance operations. Line-selection is assisted by a frame manually adjustable relatively to the carriage. Keyboard.-In addition to the usual amounts and ledger number keys (not shown), the machine is provided with a bank of transaction keys, Figs. 1 and 3, comprising a deposit key 11, withdrawal key 12, and debit and credit new balance keys 13, which serve as release keys and control the column-spacing of the record materials. Sequence arrangements.-The operation is twice interrupted during each cycle by known means to permit the ledger card and pass-book to be inserted. Keyboard interlocks. - To ensure that the. machine shall be released for each part of an operation by depression of the same transaction key, a series of cam-plates 151 ... 154, Fig. 1 are arranged in the transaction bank. A cainplate raised by depression of the associated key, locks the remaining keys of the bank, and is held in locking position by a bail 160, Fig. 3, until the operation is completed. Differential mechanism. - The differential mechanism for the transaction bank is of the kind described in Specification 481,443 and comprises a differential arm 30, Fig. 3, adjusted during the operation and restored at the beginning of the succeeding operation. Printing - mechanism; hammer impression arrangements.-The machine is provided with a single line of type-wheels, Figs. 1 and 12, comprising dating wheels 200 set by knobs 191, consecutive-numbering wheels 201 advanced by the main shaft, and ledger-number wheels 202, amount wheels 203 and a transaction-symbol wheel 204, all set by the differential mechanism. Impressions are taken from the non-additive data type-wheels 200 ... 202 by operation of a printing hammer 206. Figs. 1 and 6, and from the amounts wheels 203 and transaction symbol wheel 204 by operation of a second hammer 226. The hammers are actuated by cams 212, 231 on a shaft 214 that makes one counterclockwise revolution during each complete machine operation, the lobes being so arranged that the hammers are simultaneously operated in the first part of an operation, whereas, in the second and third parts of the operation, the operation of the second hammer is delayed to permit column-spacing of the record material. In balance-entering operations, a projection 278 of the record-material carriage 270 rocks a lever 279 to prevent actuation of the hammer 206 for the non-additive data. Column-spacing.-The record materials are inserted in succession into a guide frame 310, Fig. 1, supported on a carriage 270. With the carriage in normal position, a slip thereon is situated with its columns for non-additive and additive data beneath the appropriate sets of type-wheels 200 ... 204 in readiness for printing. If the operation. is initiated by the withdrawal key 12, Figs. 1 and 3, the carriage remains stationary throughout the operation. If the operation is initiated by the deposit key 11, the carriage remains stationary while the slip is printed during the first part of the operation, and is shifted one step to the left and restored during each of the second and third parts of the operation to column-space the amounts from the non-additive data. In an operation in which the machine is released by one of the balance keys 13, the carriage is shifted two steps to the left at the beginning of the operation and restored at the end of the operation, whereby the amount is printed in the right-hand column of all three record materials. The carriage shifting means includes a shaft 255 that is connected to the carriage by an arm 267 and link 268 and is rockable counterclockwise against the action of a spring 272 by a cam-follower 257 adjustable axially of the shaft by the transaction keys. For this purpose, a cam-plate 240, Fig. 3, differentially set by the transaction keys, is connected through a link 247 to a shaft 250, an arm of which engages a grooved hub of the cam-follower 257 Fig. 1. The arrangement is such that depression of the deposit key leaves the cam-follower in normal position, in which it is actuated by a cam 260, depression of a balance key positions the cam-follower to be actuated by a second cam 274, and depression of the withdrawal keys positions the cam-follower intermediate the cams. A detent 282, Fig. 3, cooperates with a notched plate 281 rigid with the shaft 250, to lock the cam-follower in set position until the end of each complete operation.- Line-selection.-To select the required lines of the record materials for printing, a guide frame 310, Fig. 1, is slidably supported on the carriage 270 for manual adjustment in a direction at right-angles to the automatic column-spacing movements of the carriage. To hold the frame in set position during a complete operation, a spring lowered detent 317 bears against the periphery of a notched shaft 214, rotation of which raises the detent into engagement with one of a series of holes 312 in a bar 311 rigid with the frame. The line for printing can be manually selected by raising the hose of a spring- pressed detent 324 from a serrated bar 319 on the carriage 270 which can then be slid to the desired position. Specification 204,001, [Class 106 (i)], also is referred to.