US2173246A

US2173246A - Calculating machine and recording

Info

Publication number: US2173246A
Authority: US
Publication date: 1939-09-19
Anticipated expiration: 1956-09-19

Description

Sept. 19, 1939. K. AURBACH CALCULATING MACHINE AND RECORDING ANDl THE L'IKE` MACHINE 15 Sheets-Sheet l Filed Nov. 25, 1933 Srwentor Kurt Aurbach @02a @@mw@ n. il

By K

His (Ittormg Sept. 19, 1939. K. AuRBAcH 2,173,245

CALCULATING MACHINE AND -RECORDING AND THE LIKE MACHINE Filed Nov. 25, 1933 13 Sheecs-Sheefl 2 FIG. 3

DATE WITHDRAWAL DEPOSIT BALANCE TMILS. l SNEIJL AU6.31'3Z 'l 00,500. 00 000,500.00 HIE P2 1234 089 OCT. 29'32 00,200.00 000,300.00 FM N3 1234 071 FIG. 4

061'2952 005,000.00 FM 1234 0927,.; 0012532 005,000.00 PIB 1254 092 0612932 000,500.00 m 1234 009 00,200.00 1234 Snrentor Kurt urblch His Gttorneg Sept. `19, 1939. K. AURBACH 2,173,246

CALCLLATING MACHINE AND RECORDING AND THE LIKE MACHINE Filed Nov. 25, 1933 l5 Sheets-Sheet 3 v OW'W (Ittorneg sept. 19, 1939. K. AURBACH 2,173,246

CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE F'led Nov. 23, 1933 13 Sheets-Sheet 4 v xgr" i t Smnentor 46K; Gttorneg ll'ml swwwsp1 .19, 1939. `K.AURBAH 2,173,246

CALCULATING MACHINE AND RECORDING ND THE LIKE MACHINE His Gttorng K. AU REACH Sept. 19, 1939.

CALCULATING MACHINE AD RECORDING AND THE LIKE MACHINE 13 Sheets-Sheet 6 Filed Nov'. 23, 1953 sept. 19, 1939. K. AURBACH CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Filed Nov. 23, 1933 l5 Sheets-Sheet 7 vivan Snventor Kurt urbach A His Cttotneg His Gttorneg K. AURBACH Sept.. 19, 1939.

CALCULATING MACHINE AND RECORDING AND THE LINE MACHINE Filed NOV. 23, 1933 15 Sheets-Sheet 8 K. AuRBAcH 2,173,246

CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Sept. 19, 1939.

Filed Nov. 23, 1935 13 Sheets-Sheet 9 K mwik Snventor Kurt Aurbach His (Ittorneg Sept. 19, 1939. K. AuRBAcH CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Filed Nov. 23, 1933 l5 Sheets-Sheet 10 mventor Kurt urbach His Gttorneg K. AURBACH Sept. 19, 1939.

CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Hs Gttorneg Sept. 19, 1939. K. AURBACH 2,173,246

CALCULATING MACHINE AND RECORDING A ND THE LAIKE MACHINE Filed Nov. 25, l192525 13 Sheets-Sheet 12 3 nventor Kurt urbach BfyMl/M His Gttorneg Sept. 19, 1939. K. AURBACH 2,173,246

CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Filed Nov. 225, 1933 15Y Sheets-Sheet 13 3 nneni'or Kuit urbach By/M W His (ttomeg Patented Sept. 19, 1939 UNITED STATES PATENT OFFICE CALCULATING MACHINE AND RECORDING AND THE LIKE MACHINE Kurt Aurbach, Essen,

Germany,- assignor, by

mesne assignments, to The National Cash Register Co., Dayton, Ohio, a corporation of Maryland 27 Claims.

This invention relates to bookkeeping or accounting machines and has for its principal object the `detection of mistakes in copying numbers or combinations of characters and thereby improving the accuracy with which such numbers or characters are copied, for example' where the operator of a bookkeeping or accounting machine reads a number from a record and sets it up on the keyboard of the machine. There are many operations where it is necessary to copy numbers, sometimes quite lengthy ones, either to transcribe said numbers from one paper to another, or to` introduce the numbers into a machine to serve as part of a computation. A familiar instance of this problem is presented by the ordinary passbook now in extensive use in savings banks. Such a passbook contains a column in which appears a patrons balance following the last transaction (deposit or withdrawal) other columns for deposits and withdrawals; a column for the date of transactions; and a column for the patrons account number and other identifying data. It is now common to have a calculating machine especially arranged for such a passbook. The operator reads the old balance from the book, sets it up on the keyboard, and operates the machine to enter the old balance. After this operation he inserts the passbook in the machine, enters the deposit or withdrawal, and takes the new balance. The deposit or withdrawal and the new balance are printed in the passbook in their appropriate columns, together with the date of the transaction and the other identifying data.

It is plainly seen that if an error is made, either in reading the old balance from the passbook or in setting it up on the keyboard, the error will be carried through to the new balance and may not be detected for considerable time. In the meantime, should the error be in favor of the patron, he may be tempted immediately to` close his account, with a resulting loss to the bank.

The custom in the past has been to employ .a lengthy checking system of old balance pick-ups whenever a depositor closes his account or makes a large withdrawal. This entails a loss of time and an expense which the present invention seeks to overcome by providing a means whereby the operator is informed when he has incorrectly read or set up the old balance.

Other objects of the invention are to provide a novel means of preventing the depression of certain keys except in proper sequence, so as to insure that the old balance will be picked up only (Cl. 23S-2) once for each transaction, and that a deposit or withdrawal will not be entered before the old balance is picked up.

With these and incidental objects in view, the

invention includes certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

Of said drawings:

Fig. 1 is a front elevation of the machine showing the entire keyboard with appropriate legends.

Fig. 2 is a side View of the machine taken from the right of Fig. 1.

Fig. 3 is a portion of a page of a passbook.

Fig. 4 is a portion of the detail or record strip.

Figs. 5 A and 5-B taken together form a perspective View of the controls for the symbol computing mechanism.

Fig. 6 is a side View taken from the right side of the machine showing the connections to the bank of transaction keys that controls the balance totalizer as well as their special transaction totalizers.

Figs. '7-A and 7-B taken together form a front elevation of parts of the symbol computing mechanism and several of its controls.

Fig. 8 is a detail front elevation of parts of the comparing mechanism.

Fig. 9 is a front elevation of parts of the symbol computing mechanism.

Figs. lO-A and 10-B taken together form a top plan View of the racks that connect the differential mechanism with the type wheels.

Figs, ll-A and ll-B taken together form a plan View of the symbol computing mechanism, the comparing mechanism, and several of the controls therefor, the symbol computing mechanism and the comparing mechanism being shown in section.

Fig. l2 is a plan View partly in section of the type wheels and the sleeve connections between them and the racks shown in Fig. 10-A.

Fig. 13 is a front elevation of the printing mechanism.

Fig. 14 is a View of the control slide for the printing hammers as seen from the right side of the machine.

Fig. 15 is a plan view of the upper printin hammers; and

Fig. 16 is a plan View of the lower printing hammers.

General description In general the invention includes a mechanism that employs the differential movement of the printer racks to compute a short symbol of the numbers set on the printing wheels by these racks. This calculation embraces not only the movement of the racks setting up the amount, but those setting up the account number as well. This computed symbol is immediately conveyed by appropriate racks to the printing mechanism and is printed in the passbook together with the other data of the transaction.

Such a calculation takes place when the machine is operated to take the new balance at the end of a transaction where the patron has made a deposit or withdrawal.

Now, when the patron again presents his passbook to have a deposit or withdrawal recorded therein, the bank teller will set up the patrons old balance, account number, and symbol number from the passbook, and also depress the appropriate transaction totalizer selecting keys, and operate the machine to enter the old balance. When the differentials for the amount and account number are adjusted under control oi the depressed keys, their printing racks are correspondingly adjusted, so that the symbol calculated for the new balance in the previous transaction will again be calculated as the symbol for the present old balance. This calculating also causes an adjustment of one side of a comparing mechanism to a position corresponding to the computed symbol. Depression of the proper symbol keys causes the movement of the differential mechanism for these banks to adjust the other hali of the comparing mechanism to a position corresponding to the symbol keys depressed. 1i the proper keyboard set-up was made, the comparing mechanism will allow the transaction to be completed in the proper way. If, however, a mistake was made in setting up the amount, account number, or symbol number, the two sides of the comparing mechanism will not be correspondingly adjusted, with the result that the machine will be prevented from completing a proper recording of the transaction, so that the operator will be apprised of his mistake.

Locking mechanism is provided to prevent the entry of the old balance more than once during a transaction and also to prevent the entry of a deposit or withdrawal before the old balance is picked up.

Detailed description The keyboard of the machine (Fig. 1) has eight rows of amount keys It, four rows of account number keys I I, three rows of symbol keys I2, three rows of totalizer selecting keys I3, ld, and I5, with their corresponding levers it, a lever II to take balances from the balance totalizer, a kind of operation lever I8, and a motor bar I9.

The mechanism in this machine illustrates the use of a symbol having as few as three decimal places to control a keyboard setting involving as many as twelve decimal places or rows. In this machine the three rows of symbol keys I2'. control the setting of the account number keys I i and the amount keys I9.

Racks 24 (Figs. 7-A, 7--B, 10-A, and 1G-B), fitted in guides such as 29, are differentially shifted under control of the keys i9 and Ii, by any suitable form of differential mechanism, one form suitable for the purpose being shown in United States Patent No. 1,792,569 to Ernst Breitling and a slightly different form in United States Patent No. 2,039,143, of the same inventor. Since the particular type or detailed operation of the differential mechanism is not essential to an understanding of the invention, it will not be described, althoughit is generally shown in Fig. 6. Three racks :il (Figs. lil-A and 10-B) lie parallel to the racks 2li and are shifted differentially under control of the symbol keys I2. The racks 2d mesh with pinions 25 (Figs. '1 -A, '.7-B, and l2) connected to printing type wheels Eil by pinions 2i, and 223 and the nested sleeves 29. By these connections the keyboard setting of the transaction is transmitted to the printing mechanism. The racks fil', controlled by the symbol keys, have no connection with the printing wheels, but transmit their settings to three wheels 9G, B8, and j (Figs. 'T B, 9, and lli-B) for a purpose to be later mentioned.

The racks tti for the amount and account number are provided, on their right-hand ends, with slots 39 and 3i (Fig. 9) used in calculating the symbol. The slots 39 are associated with the units order of the symbol and the slots 3l with the tens order. The hundreds order receives the overflow from the slots 3i of the tens order.

The mechanism by which these slots calculate the symbol will now be described. A plurality of carriers 3S, one for each rack f2-I associated with the amount and account number banks, are connected to a corresponding number of arms loosely mounted on shalt A roller 32 is attached to the side of each carrier and extends into its respective slot 39. Each carrier oi two similarly shaped plates, having pivoted therebetween an actuating wheel such as which, is permanently in mesh withintermediate wheels 36 and 3l. shifting the rack 2d longitudinally, the carrier is lifted or lowered by the cam slot and roller 32. When this takes place, the wheel rolls on the wheel 36 rigid on a xed shaft and transmits the actuating motion, in the manner of a planet gear, to the double pinion 3l, 39 loose on shaft 44. This actuation is transmitted from the gear 33 through the gear 59, associated with the next rack to the double pinion l i, l2 loosely mounted on the shait 43, the actuation thus being transmitted from gear l2 to gear l5 for the next rack, and so on from gear to gear until the gear 4B secured to shaft has received the movement. Since every carrier raised or lowered contributes an additional movement through its actuating wheel, the gear it receives the sum of all the motions imparted to the actuating wheels, and since this gear is fast to shaft fill, the movement is transmitted to a disc 9, splined to the shaft, and to a transmission gear i9 rigid thereon. The described actuating mechanism calculates only the units place of the symbol. The mechanism for calculating the tens place is supported on shafts di and 52. The cam slots Cil of the racks 2d act upon rollers 53 on carriers 5F@ to move the actuating wheels 59 of the tens order up or down. The carriers 5ft are connected to arms 59 and operate in a manner similar to the carriers The actuating motions of the individual racks are transmitted additively to the last gear 92, from the gear 53 fixed to the rigid shaft 5i, through the gears and double gears 6b, Si, in the same manner as described for the units order, the gear 92 also receiving the overiow from the units order. rThe gear 52 is xed to the shaft 52, and thereby controls the rotation of the gears 'II and 82 fixed thereto, and the setting of the disc 10 splined thereon.

If in the units order several racks have been shifted to such an extent that the total of the actuations exceeds 9, then the required tens transfer is effected by a cross wheel 13 (Fig. '-B) secured to the shaft 44, together with gear 46. A roller 14 on the cross wheel engages the slots in a mutilated Maltese cross 16 to actuate it to effect the tens transfer. The Maltese cross has rigid to it a cam disc 11 which by means of rollers 19 rocks a rocking arm 18 mounted on shaft 52 in such a manner that an actuating wheel 8| pivoted at 80 on arm 18 executes an actuating motion in the same manner as the actuating wheels 59. Since there is never more than two units to be transferred to the tens order, the Maltese cross 16 having the two slots 15 is sufficient to receive the successive actuations of cross 13.

A transfer to the hundreds place is eifected in a conventional way by a mutilated gear 82 and a wide pinion 83 (Figs. 7--B and 11-B). The latter is actuated by the gear 82 and rotates the hundreds gear 84 rigid to shaft 69, which in turn sets the disc splined thereon. The symbol corresponding to a particular setting of the racks thus has been calculated and transmitted to the

discs

48, 10, and 85.

It is obvious that when the racks 24 are shifted from one setting to another during successive machine operations, the carriers 33 will rotate the pinions 31-40, etc., and the transfer mechanism veither forward or backward directly to the new setting without first returning it to a home position. From Fig. 7-B it is apparent that a reverse rotation of cross wheel 13 will restore a previous transfer movement given the disc 11 and rocking arm 18.

The gear 50 secured to the units shaft 44 is connected to a gear 68 through the

gears

63, 64, 65, 61, and 68, so as to impart to the gear 68 whatever setting is given the shaft 44 and disc 48. Likewise the gear 1| secured to the tens shaft 52 is connected to a gear 12' through the gear 12, while the gear 84 secured to the hundreds shaft 69 meshes directly with a gear 84. These three gears 68', 12', and`84' are connected, by any suitable mechanism, to pinions 25 (Figs. 7 B and 12) to set the calculated symbol on the printing wheels 20. One such form of connection is shown by the racks 24 (Figs. '7-B and 10-B) meshing with both the wheels 68', 12', and 84' and the wheels 25', which are in turn connected to the printing type wheels 20 (Fig. 12) by sleeves 26.

The differential movement of the racks 41, as controlled by the symbol set up on the keyboard, is transmitted, as before mentioned, to the three gears 86, 88, and (Fig. 11-B). Gear 86 is journalled on the units shaft 44 and carries a pin 81 on one side thereof, while gears 88 and S0 are journalled on the tens and

hundreds shafts

52 and 69, and carry pins 89 and 9|.

The

discs

48, 10, and 85 are normally disconnected from the

gears

86, 88, and 90, so that they may be set independently. The pins 81, 89, and 9| are so positioned on the gears that when the symbol set up on the keyboard corresponds with that calculated by the set-up transaction, they will lie opposite one of the notches 92 (Figs. 8 and ll-B) in each of the discs.

The mechanism for controlling the use of the symbol computing mechanism is illustrated in Figs. 5-A, 5-B, 6, 'l-A, 7-B, ll-A, and ll-B,

and has a driving shaft 93, the motion of which is transmitted through bevel gears 94, (Figs. 5 B and ll-A) to a shaft 96. Cam discs 91 and 98 (Figs. 5-A and 11-A) are secured thereon and co-operate with rollers |00 and 99 mounted on draw bars |0| and |02. The draw bar il, pivoted on links |06 and |09, mounted on shafts |91 and |08, respectively, has the roller 00 thereon held in contact with the cam disc 91 by a traction spring |05, so that the bar moves to the left after the cam disc 91 has rotated approximately degrees counter-clockwise. The link |06 is secured to shaft |01, which has also secured to it a lever ||0 which raises a blocking rod guided in a plate ||2. Whether or not the draw bar |0| may move to the left depends upon the position of a recess |23 provided on rack ||3, situated above the rod and having its movement governed by the differential mechanism situated under the keys |5. The connections from the keys I5 to the rack itil includes the mutilated segment 400 (Fig. 6) adjusted to a position under the inner end of a depressed key by the differential mechanism. This segment meshes with gear 40| which transmits its movement through the

gears

402, 403, 404, 405, and 406 to the rack ||3. The recess |23 in rack i i3 is so formed and positioned that it allows the draw bar |0| to move to the left only when the keys I5 assigned to the positive and negative old balances are depressed. This control is provided so that the mechanism now being described will operate only if and when an oid balance is picked up.

Draw bar |03 is connected to the printing wheels through the lever |32 (Fig. 7-B) and the link |34 (see also Fig. 12), and is connected to the keyboard by parts shown in Figs. 5-B, 6, and l.-B. These gures show a detent 202 mounted in a conventional manner on arms 3|| and Sii! and having lugs 2|2 in position to cooperate with studs 203 projecting from the keys in row i5. It will be noticed that in the normal position of the parts, as shown in Fig. 6, the lugs 2&2 under the POB and NOB keys are out of line with the studs 203, so that an old balance may be entered. The lugs 2|2 under the other keys are, however, directly under their studs 203, so that deposits or withdrawals may not be made with the detent in this position.

When an old balance is entered the spring IEM moves the bar m3 to the left when the machine has completed about one-half the operation. This movement lowers link 2id and tensions a weak spring 2I5, the link 2|@ and detent 2M being held in theirv upper positions by the stud 293 on the depressed old balance key lying under its lug 2I2, N'ow, when the keys are released near the end of the operation, as is customary in the art, the tension of spring l t' pulls link 2 I6 and detent 2&2 downward sufficiently to lock out the old balance keys and to unlock the the deposit and withdrawal keys D and W for the next operation.

The deposits or withdrawals may now be entered, during which operations the shaft fifi executes, in eifect, idle movements.

The next operation in the normal course of business is that of taking the new balance, which consists of moving the lever il (Fig. l) into its new balance position and depressing the motor key I9. This causes the differential mechanism underI the row of keys l5 to be arrested in one of two positions between the keys W and POB in this bank. The mechanism for taking the new balance and for causing such an arresting move* ment is not shown herein, as it is not necessary to an understanding of the present case. It is, however, fully shown and described in the United States Patents Nos, 1,899,455 and 2,052,444 issued to Ernst Breitling. With the differential stopped in this position the slide l i3 is arrested ,in a position where the tapered notch i222 (Figs. E-A and '7-A) on the under side thereof rests over the pointed end of a bell crank IIfl This allows the bell crank 5M to move countereclockwise under the inuence of a springl H5, lowering a link IE6 as well as the left-hand end of a link l i3 pivoted to a lever II'I. The lever Ill is pivoted on a rod at its mid portion and is connected at its lower end to a bar lll? (Figs. 5-A and ll-A). A nose IIS on the left end of link Ii lies in the same plane as an arm l2@ connected to the lever i2@ by a sleeve, and is lowered into the path of arm ll by the lowering of link lili.

Toward the end of this new balance operation the cam 98 secured to shaft Q@ moves the bar it to the right, moving link lit to the left and causing the arm I2@ and bell crank im to rotate counterclockwise about shaft Ei, thereby restoring the bar H23 to its right-hand or home pos' ion. This movement also causes the rod H5 to be raised and thereby allow spring I2? to restore arm i295 to the position shown in Figs. 5-A and 7-A. The return movement of the bar IGS also causes the slide 262 (Figs. 5-B and 6) to be returned to the position shown in these figures, where the old balance keys are free to be depressed for the next bookkeeping transaction.

It is apparent that the bar Iili receives no actuation during deposit and withdrawal operations or during operations for taking the new balance, since the rod iIl can move upward to allow an operation of the bar Ilii only when the slide H3 is positioned for old balance operationsl We will now consider the operation of this mechanism when an improper keyboard setting is made for the entry of an old balance in the machine. When an incorrect setting is made on the keyboard and the machine is operated, the symbol computing mechanism adjusts the discs 48, lll, and 85 (Fig. ll-B) to the position corresponding to the keyboard setting of the amount and account number. Also, the differential mechanism for the symbol keys I2 causes the

gears

8G, 88, and 90 to be adjusted to the position corresponding to the keyboard setting of these keys.. If the amount has been correctly set up, when the cam 9i releases bar lill for movement to the left, bell crank IS (Fig. 5E) is rotated clockwise, lowering arm 46. This lowers an arm Il'l (Figs. -B and 7 3) secured to shaft M8, and moves the upper ends of yokes M9, and I5I (Figs. 6, 8, and ll-B) toward the front of the machine. These yokes (Fig. G) lie within shouldered recesses on the back of discs lil, and St, and thereby carry the discs with them. Now, since the symbol calculated by 'the symbol computing mechanism and set up on discs 48, lll, and is not the same as that set up on the keys iii and gears Bti, 8S, and Qu, the notches 92 in the discs 48, lil, and 85 do not properly align with the studs 8l, 8g, and 9i on the gears 8b, lii, and and movement of the members Ifil, and IfI (Figs. 5--B and 'l-B) and the yokes M9, ISG, and Il (Figs, 6, 8, and ll-B) is prevented, in turn preventing a movement of the bar I @I under the influence of spring HB5. This causes the rod 25 to be held in its upper position and thereby causes the bar i933 to be held in its right-hand, or home position. Since the bar it is held in its right hand or home position when an improper keyboard setting is made, it follows that the detent EQ2 (Fig. 5-B) will remain in its home position, and therefore a deposit or withdrawal key cannot be depressed following an incorrect entry of an old balance, When the bar and the parts and are so held during an operation, a on the type wheel 2li-o is held in position to print on the detail. strip beside the calculated symbol, showing a faulty keyboard set up. Such a is shown on the right-hand side of the detail strip shown in Fig. 4.

After an incorrect setting has been made o-n the keyboard and the incorrect setting has been entered into the machine, it is necessary that a new balance operation be performed to clear the incorrect data from the machine. During such operation the printer is controlled to make a record of the improper entry and the new balance operation. This is accomplished by again l ving the printed on the detail strip and by or?. ng the type hammers that print the symbol nachher and balance on the customers card or passbook. The printing mechanism, together with this crippling mechanism, will now be described.

Referring to Figs. 13 to l5, upper and lower printing hammers are pivoted on shafts Seil and (Fig. 13) and lie over and under the type wheels 2Q. These hammers are provided with the usual rubber impression blocks The upper printing hammers have a pin and slot connection lili with levers llo, ilQ, pivoted on shaft it and connected by links ill' with trip levers E58 tot I'Ifl. A series of actuating cams are secured to shaft Slt operated during each operation of the machine as heretofore mentioned. The trip levers ll to lili and the left-hand portion of the lower hammers are provided with rollers Sili bearing against the peripheries of the cams 302 through the tension of springs 3&5 and 3&6. When the shaft @t is rotated the rollers 3M drop from the high portions of the cams to the low portions, causing the hammers to take impressions from the type wheels,

A record strip ISS is fed from a supply roll I over rollers IG'I, I88, E89, and i353 onto a storage roll ISI. A cam secured to the shaft lili actuates the lever lll/1 to reciprocate an arm |92 75 to advance the record paper and to reciprocate an arm |91 to advance an ink ribbon suspended around the rollers |94, |05, and |96 and a spool |98. The upper hammers are used to make the impressions upon the record strip, while the lower hammers are used to print upon the patrons cards or passbooks.

A slide |39 (Figs. 13, 14, and 16) is positioned between the levers |68 to |14 and the rear ends |63 to |61 and |15 of the lower hammers. It is obvious that if the upper and lower edges of this slide were continuous it would not be possible for the hammers to be actuated. This slide, however, is provided with a number of recesses |52 to |S| (Fig. 14). A recess |62 also is provided to accommodate the slide |36 moved by the bar |03 (see also Fig. '1--A). The recesses |52 to li are so positioned that they allow the appropriate printing hammers to make an impression during the various transactions. The movement of slide 39 to the left (Fig. 14) is controlled by a rollerl |42 on the slide |39 contacting a plate |43 (Figs. 11-A and 16) mounted for sliding movement in the block |45 secured to the machine frame, and adjusted by a depending portion |44 of the slide ||3.

When a deposit operation is performed, wherein one of the transaction keys D is depressed, the slide I3 and the plate |43 receive only a small movement (as can be determined by reference to Fig. '-A), so that the roller |42 remains on the step 301 (Fig. 16) of the slide |43. Referring now to Fig. 14 it is seen that in this position the upper and lower hammers for the deposit items, as well as the hammers for the date, account number, totalizer sign, and feed are free to operate.

For withdrawal operations involving a depression of the W keys the slide I3 and plate |43 reoeive a slightly greater movement to the left, causing the roller 42 to move onto the step 308 by the tension of spring |4| (Fig. 16). In like manner this causes the appropriate hammers for withdrawal transactions to be released for operation,

When the machine is operated to secure a new balance the roller |42 lies on the lowest step 309 of slide |43, causing the hammers used for balance transactions to be released for operation, and when an old balance is entered by depression of one of the old balance keys POB or NOB, the roller |42 rests on the step 3|0, causing the appropriate printing hammers for this operation to be released. It will be noted, however, that during old balance operations the lever` |1| that controls the printing of the old balance on the record strip is released, whereas the printing hammer |64 of the lower set of hammers that prints on the account card or passbook is not released. 'I'hese hammers are arranged in this way because there is no necessity of printing an old balance on the customers book or card.

It will be remembered that when an old balance operation is performed with the correct keyboard setting, the bar |03 (Figs. 5-A and 7-A) moved to the left and is not returned until after the new balance has been taken and printed that is, the slide |03 is returned to the right at the end of a new balance operation. Movement of the bar |03 to the left causes a corresponding movement of the slide |36 secured to the bar |03 by pin and slot connections |35 and pulled toward .the right by a spring |31. When the keyboard has been given a correct setting and the bar |03 -is moved to the left as a result thereof, the raised portion |38 of the slide |36 is drawn to the left of the notch |62 in the slide |39, Since this raised portion |38 will remain withdrawn until near the end of a new balance operation, the slide |39 may move to the left (Fig. 14) sufficiently far to allow the roller |42 to contact the step 309 (Fig. 16) of the plate |43, making it possible for the balance hammer |64 to operate and thereby make an impression of the new balance on the account card or passbook.

It might be noted here that during the last part of the operation the bar 03 is returned to its right-hand position, and since the slide 39 is at this time in its extreme left-hand position (Fig. 14) a portion thereof lies in the path of the raised portion |38 of slide |36, necessitating the flexible connection shown between the slide |36 and bar |03. The slide returns to its normal position during the rst part of the next operation (entry of an old balance), when the rack ||3 moves the plate |43 and thereby cams the slide |39 to the right (Fig. 14).

If, however, an incorrect setting was made on the keyboard for the entry of the old balance, the bar 03 will not be moved from its position shown in Figs. 5-A and '-A, so that when the subsequent new balance is taken, the raised portion |38 of the slide |36 will restrict the movement of the slide |39 suiciently that the hammer |64 (Fig. 16) will not be freed to print the new balance on the account card or passbook, It will, theretore, not be possible for the holder of this card or passbook to later present the same with an incorrect new balance.

A mechanism is also provided to make it impossible to perform two old balance operations in succession. To accomplish this the following mechanism, shown in Fig. 6, is provided.

A slide 20| having tapered faces resting under the two old balance keys is pivoted on an arm 204 at its lower end and an arm similar to arm 3|| at its upper end. A link 205 is pivoted to the arm 204 and is connected to a link 206 by a pin and slot connection, the link 206 being held in its uppermost position by a spring 201. The link 206 is bifurcated to straddle a shaft 209 and has a stud 208 secured thereto and (zo-operating with a semi-circular member 2|0. When one of the old balance keys is depressed, the slide 205 is moved upwardly tensioning spring 201. Upon operation of the machine the member 2|0 rotates about shaft 209 releasing stud 208 and link 206 to the action of spring 201. The stud 208 immediately assumes the upper dot and dash line position At the end of the operation the member 2|0 again assumes the position shown in Fig. 6, and when the depressed old balance key is released toward the end of the operation, the slide 206 drops slightly, leaving the stud 208 in the lower dot and dash line position. If it is now attempted to execute a second old balan-ce operation, a depression of one of the old balance keys will raise slides 205 and 206 so that the stud 208 will be moved immediately to the upper dot and dash line position where it will be in the path of a member 2| which must be moved to the left before the machine can be released.

Operation In the following operation we will assume that a patron presents his passbook to the teller in order to make a withdrawal of $200.00, the old balance being $500.00.

Setting up the old balance, the teller makes a mistake and sets up $5,000.00 instead of $500.00,

ibut sets up the proper symbol 089 for $500.00. He also sets up the proper account number 1234. Upon operating the machine, the slide HS (Fig. 5-A) moves to such a position that the notch |253 lies directly over the blocking rod il. The slides 41 (Fig. 'l0-B) are differentially moved under control of the symbol keys to give the studs l', 09, and 0i (Fig. lli-B) their appropriate setting, while the` racks 24, controlled by the amount and account number keys, are differentially adjusted and thereby adjust the discs 08, 10, and to bring the notches 02 therein to their positions corresponding to the amount and account number set up on the keyboard.

Now, since the impro-per amount was set up on the keyboard, the notches 02 will not lie opposite the studs 0l, 09, and 9i, so that when the bar l0! (Fig. w-A) is moved to the left, it will not move far enough to release E25 from E26 and bar H03 will be held against movement to the left, in turn holding printing wheel Eild (Fig. 12) in a position where it will print a star on the record strip.

Referring to the top line on Fig. 4, we will iind a record of such an entry. In this figure it will be noticed that the symbol calculated for the amount of $5,000.00 together with the account number 1234 is 092 and not 089 as was set up on the keyboard for the entry of the $500.00 amount,

After this operation, the machine cannot be released for operation to enter withdrawals or deposits, because the detent 202 locks these keys against depression, and another oid balance cannot be entered, because stud 208 prevents release of the machine following an incorrect entry of an old balance, Therefore, the only operation possible is to take a new balance, but such new balance would not appear in the patronspassbook because of the fact that when the slide l03 is retained in its right-hand position (Fig. 5-A) the slide i350 is retained in the path of slide 39 (Fig. 14) so that when the stepped plate ifil (Fig. 11-A) is shifted during a new balance operation, to allow the roller 142 to rest in the bottom notch 300, this slide 30 (Fig. 14) will prevent a full movement of the slide its and thereby cause the balance hammer it and the symbol hammer i215 for the passbook to be held up.

Now when the teller sets up the proper $500.00 old balance together with the proper account number 1234 and symbol number 089 appearing on the top line of the passbook, shown in Figure 3, the studs Si, 09, and 9i (Fig. ll-B) and the notches 02 will be adjusted so as to be in proper alignment with one another. This allows the rod E03 (Fig. 5-A) to be moved to the left, so that slide 30 is moved out of the path of slide 30 and the type wheel iida is moved to such a position that the star will not be printed on the record strip. Such an entry is shown on the third line of Fig. 4.

The teller then enters the withdrawal item of $200.00 shown on the fourth line of Fig. 4. During this operation the proper entry is made on the second line of the passbook shown in Fig. 3, with the slide 130 (Fig. 14) being adjusted to such a position that the notches therein will free the proper type hammers.

Now, when the new balance is taken, slide 35? is moved to its extreme left-hand position (Fig. 14) allowing the balance and symbol hammers for the passbook to print the appropriate entries as is also shown on the second line of Fig. 3. During this new balance operation, adjustment of the slides 24 will calculate and print the symbol for the new balance, which is shown as 071 in Figs. 3 and 4.

Nov when the patron again presents his book for the entry of a transaction, the appropriate data for the entry of such subsequent transaction appears in the form of $300.00 in the balance column and the symbol 071 in the symbol column.

While the form of mechanism herein shown and described is admirably adapted to fufilll the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follows.

What is claimed is:

1. In an accounting machine, the combination of a series oi denominational members simultaneously settable in accordance with the digits of a number, computing mechanism, symbol members set by the computing mechanism, and means connecting said denominational members with said computing mechanism whereby a symbol of said number is computed and set up on said symbol members upon operation of said denominational members.

2. In an accounting machine adapted to perform total taking operations, the combination of a totalizer for accumulating a total as the result of a computation of multi-digit numbers, means sottable under control of said totalizer to positions corresponding to the digits of the total, and means operated by the settable means as they are set, for computing and setting up a symbol of said total in a total taking operation.

3. In accountingmachine,thecombinationof aseriesoi denominational members simultaneously settable to represent a series of digits, a mechanisrn including a plurality of interconnected gears for computing a multi-digit symbol for a series of digits set on the denominational members, and means for connecting the gears for operation by the members whereby the digits of the symbol are all computed during the simultaneous operation of the members.

4. In an accounting machine, the combination of means for computing a symbol of a number entered in the machine, means operated by the computing means for setting up the computed symbol, key-controlled means for setting up a precomputed symbol of said number, means for comparing the setting of the means set by the computing means and the means set under key control for determining whether said computed symbol corresponds to said previously computed symbol, and control means for rendering the determining means ineiective during certain 0perations of the machine.

5. In an accounting machine, the combination of machine control means, means simultaneously settable to indicate a series of digits, means, operated by said settable means as it is being set, for computing a symbol for said series of digits, symbol members operated by the symbol computing mechanism to set up the symbol, feeling mechanism cooperating with the set symbol members andmeansoperated by the feeling mechto control the machine control means.

6. In accounting machine, the combination of a totalizer, means including a plurality of members set to different positions under control of said totalizer for setting up values standing thereon, means operable by said members as they are set to their differential positions for automatically computing a symbol of the value being set up, and means operated by the computing means to set up the computed symbol.

7. In an accounting machine, the combination of a series of denominational members, said members being shiftable in either of two directions, actuating cams on said members, and symbol computing mechanism operated predetermined extents by the actuating cams on the denominational members during their movements in either direction.

8. In an accounting machine, means for computing a symbol for a series of digits, including members settable to positions corresponding to the computed symbol, elements directly settable to positions corresponding to a precomputed symbol for said series of digits, feeling mechanism cooperating with the set members and elements for comparing the symbol, as computed, with the precomputed symbol and means to render the feeling means operable in certain operations of the machine.

9. In an accounting machine, means for computing a symbol for a series of digits and for setting up said symbol, means for setting up a precomputed symbol for said series of digits, means for comparing the computed symbol with the preccmputed symbol while the two symbols remain set up, an indicating means normally operable to indicate a nonagreement of the symbols, said comparing means being operable to render the indicating means inoperative when the symbols agree, and differentially operable means to render the comparing means operative only in certain machine operations and after the symbols have been set.

l0. In an accounting machine, the combination oi a totalizer, means positioned under control thereof for setting up values standing thereon, means operable by said setting up means as the setting up means is controlled by said totalizer for automatically obtaining a symbol of the value being set up, and means operated by the obtaining means to set up the obtained symbol.

Il. In an accounting machine, a plurality of control keys for controlling the operation of the machine, means for obtaining a symbol for a series ci digits, including members settable to positions corresponding to the obtained symbol, elements directly settable to positions corresponding to a preobtained symbol for said series of digits, feeling mechanism cooperating With the set members and elements for comparing the symbol, as obtained, With the preobtained symbol, and means operated under control of the feeling mechanism for selecting the control keys for operation to variously control the operation of the machine in accordance With Whether the symbols are the same or different.

l2. In an accounting machine, key-controlled means for obtaining a symbol for a series of digits and for setting up said symbol, key-controlled means for setting up a preobtained symbol for said series of digits, mechanical means for comparing the obtained symbol with the preobtained symbol, an indicating means normally operable to indicate a non-agreement of the symbols, said comparing means being operable to render the indicating means inoperative when the symbols agree, and control means for allowing the operation of the comparing means in only certain machine operations.

13. In a machine of the class described, the combination of a plurality of type carriers; differentially positionable means for setting the type carriers to indicate amounts; means, operated by the differentially positionable means as they are operated to set the type carriers, for computing a short symbol of the amount simultaneously With the setting of the amount on the type carriers; type carriers set by the symbol computing means; and means cooperating with the type carriers to simultaneously print the amount and its related short symbol.

14. In an accounting machine adapted to perform total taking operations, the combination of a totalizer; differential members settable under control of the totalizer to positions commensurate with the digits of the total on the totalizer; symbol computing mechanism; and means on the settable members operable to impart predetermined increments of movement to the symbol computing mechanism When the members are set under totalizer control.

15. In a machine of the class described, the combination of key-controlled differential mechanism; a plurality of type carriers; a plurality of members simultaneously positionable by the differential mechanism and operable to. set the type carriers to represent a series of digits; means operated predetermined extents by the members as they are operated to set the type carriers, for obtaining a short symbol for said series of digits; type carriers operated by said obtaining means to set up the symbol simultaneously with the setting of the type carriers for said series of digits; and means cooperating with the type carriers for said series of digits and said symbol type carriers for printing said series of digits and said symbol simultaneously.

16. In a machine of the class described, the cembination of a plurality of denominational members settable to represent a series of digits; symbol computing mechanism including a plurality of trains of gears, each train of gears comprising a plurality of gears mounted on xed supports and a plurality of gears mounted for movement relative to the iixed supports; means on the members operable to shift the gears, Which are mounted for movement, to cause the trains of gears to receive predetermined increments of actuation as the denominational members are set, to thereby compute a symbol related to the series of digits; and means operated by the symbol computing mechanism for setting up the computed symbol.

17. In a machine of the class described, the combination of a plurality of members simultanecusly settable to represent a series of digits; symbol computing means including a plurality of trains ci gears; means on the members operable to give certain of said gears predetermined increments cf movement when the members are set to represent the series of digits to thereby compute a symbol for that series of digits; and means settable by the computing means to set up the computed symbol.

18. In a machine of the class described, the combination of a plurality of denominational members simultaneously settable to represent a series of digits; symbol computing means including a plurality of trains of gears, each train of gears comprising a plurality of gears mounted on a Xed support and a plurality of gears mounted on movable supports; a plurality of actuating means on each of the members for shifting the movable supports for the gears in the plurality of trains of gears predetermined extents when the members are set to represent said series of digits