US2390870A - Accounting machine - Google Patents

Description

Dem 1945. A. R. COLLEY 2,390,870

ACCOUNTING MACHINE Original Filed Jan. 30, 1941 5 Sheets-Sheet l @Symbol Row w n" @@@@@@@@9 j@@@@@@@@@ AMOUNTS.

FIG. I

CHECKS. I

INVENTOR ARTHUR R. 60!. LE)

HIS ATTORNEY Dec. 11, 1945. A. R. COLLEY 2,390,870

ACCOUNTING MACHINE Original Filed Jan. 30, 1941 5 Sheets-Sheet 2 INVENTOR m ARTHUR R. COLLEY HIS ATTORNEY Dec. 11, 1945. R COLLEY 2,390,870

ACCOUNTING MACHINE Original Filed Jan. 30, 1941 Sheets-Sheet 3 INVENTOR ARTHUR R. COLLEY HIS ATTORNEY Dec. 11, 1945. A. R. COLLEY ACCOUNTING MACHINE Original Filed Jan. 30, 1941 5 Sheets-Sheet 4 S i 5 vx INVENTOR ARTHUR R. GOLLEY HIS ATTORNEY Dec. 11, 1945. A. R. COLLEY 9 ACCOUNTING MACHINE Original Filed Jan. 30, 1941 5 Sheets-Sheet 5 INVENTOR ARTHUR R. GOLLEY B-YM HIS ATTORN FY Patented Dec. 1-1, 1945 UNITED STATES PATENT OFFICE National Cash Register Company,

Dayton,

Ohio, a corporation of Maryland Original application January 30, 1941, Serial No.

Divided and this application December 9, 1943, Serial No. 513,556

4 Claims. (Cl. 235 -2) This application is a division of the application of Pascal Spurlino, William M. Carroll, Arthur R. Colley, and Alfred G. Kibler, Serial No. 376,670, filed January 30, 1941, which issued into Patent No. 2,375,594 on May 8, 1945.

The present invention relates to accounting machines and is shown applied to a "commercial posting or bank service machine, and is illustrated as a means for counting checks.

The present invention is embodied in a machine of the general type disclosed in the following United States patents, to which reference may be had for a complete showing and description of standard mechanism not fully disclosed herein: United States Patents No. 1,619,796, No. 1,747,397, and No. 1,761,542, issued, respectively, March 1, 1927, February 18, 1930, and June 3, 1930, to Bernis M. Shipley; Patent No. 2,175,346, issued October 10, 1939, to Maximilian M. Goldberg; Patent No. 2,141,332, issued December 27, 1938, to Charles H. Arnold; and Patent No. 1,693,- 279, issued November 27, 1928, to Walter J. Kreider. The machine embodying the instant invention as presently constructed is commonly referred to as a commercial posting or "bank service machine and is used by banks and similar institutions for the posting of individual checking accounts.

It is common practice to post each individual checking account daily, provided said individual accounts remain active every day, and this posting includes the picking up of old balances; the subtracting of debits, generally in the nature of checks drawn against said account from said old balance; the addition of credits, generally in,

the nature of deposits to said account; and the performing of a total-taking operation to arrive,

at a new balance.

While the machine of this invention is arranged for use by banks in the posting of individual checking accounts, it is not the desire to limit said machine to such use, as, with minor alterations and adjustments, it may be arranged for use in connection with numerous other typesv of business systems, all coming within the scope of this invention.

The object of the invention is to provide means for counting the number of a certain item recorded during the balancing of one account.

Another object is to supply means to automatically count one when the amount of a certain item is recorded, said means also adapted to be manually controlled to count a plurality of items when the total amount of said items is recorded.

With these and incidental objects in view, the

invention includes certain novel features of con struction 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 thisspecification.

In said drawings:

Fig. 1 is a diagrammatic plan view of the keyboard of the machine embodying the instant invention.

Fig. 2 is a sectional view taken just to the right of one of the amount banks, showing the mechanism associated therewith. I

Fig. 3 is a sectional view taken to'the right of the transaction bank, showing the mechanism associated therewith.

Fig. 4 is a detail view of one of the keys in the units check-counting bank and a portion of the ciated with the transaction keys for controlling the automatic check-counting mechanism. 4

Fig. 9 is a front view of the No. 1 or balance totalizer line.

Gunman DESCRIPTION The machine embodying the instant invention is of the general type disclosed in theArnold Patent No. 2,141,332, referred to hereinbefore, and is provided with a column-printing mechanism located at the front of the machine for simultaneously recording identical data in one or more columns of an insertable slip orbill during one operating cycle of the printing mechanism. Machines of this character are useful. in the preparation of bills or statements by banks, public utility companies, and the like, said bills or state- 'ments being provided with a plurality of vertical columns either for the printing of the samedata in the severalcolumns, or for the printing of difierent data in said columns. Likewise, the statements or .bills may be provided with two separable portions containing identical data, one

for the customer and one to be retained as a file copy.

In the present case, the specific example chosen to illustrate the system used in connection with I rality of customers of said institution. However, it is not the desire or intention to limit this machine to the banking system outlined above, for, as previously stated, with minor alterations and adjustments, said machine may readily be adapted for use in connection with many business systems.

The main portion of the machine of this invention is of standard construction, and, as this standard mechanism is fully disclosed in the patents referred to at the beginning of this specification, such mechanism will be but briefly treated herein.

The machine chosen to illustrate the present invention is provided with a plurality of rows of amount 'keys for entering amounts in the various totalizers with which the machine is equipped and for setting up corresponding type wheels to record the amount on record material. The machine also has a row of transaction keys for entering positive and negative items in the various totalizers and a row of symbol-printing keys for printing symbols for identifying the various items. Instead of the conventional total control lever, this machine is equipped with a row of total control keys which control the functions of the machine, including adding, subtracting, reading, and resetting operations. A

key release lever, located on the right-hand side of the keyboard, is used for releasing any depressed keys.

. The machine embodying this invention is pro-. vided with an automatic counting mechanism for counting one automatically each time a certain keyin this case the check key-is depressed in an operation. The check-counting wheels are deposit correction operationait is necessary to subtract in these totalizers in order to secure a correct total.

, Dnrarnitn Dasciurrxon' Framework and operating mechanism The main framework of the machine comprises a left frame 60 (Figs. 2 and 3) and a similar right located in the two highest order positions on the balance totalizer line. However, these wheels are not connected with the balance totalizer in any way and automaticallycount up to 99 checks. A check Correction transaction key is provided for correcting checks or other debit items which have been entered erroneously, and, when this key is depresed. it causes one" to be subtracted from the check-counting wheels by adding the comple-' mentary figure of 99 insaid wheels. In addition to the automatic counting of checks, two rows of keys are provided at the left-hand end v of the keyboard for use in setting up the number of checks in a bundle when the total amount of these checks is entered as one item during one operation of the machine; Various interlocks are provided for controlling the automatic checkcounting mechanism.

The present machine is provided with two totalizer lines (Fig. 2); namely, an upper or No. 1

"totalizer line and a back or No. 2 totalizer line.

The upper or No. 1 totalizer line supports the balance totalizer, often referred to as a crossfooter, which is used for computing positive and negative amounts to arrive at new balances. The back or No. 2 totalizer line has thereon four totalizers, two of which are add-subtract totalizers, one for keeping a total of the debit or check items and the other for keeping a total of the credit or deposit items. The reason add and subtract totalizers are used for totals of checks and deposits is that, in check correction and frame (not shown), which support most of the frames, rods, and bars. The base plate 6| rests on v and is secured to four printer frames, one of which, 64, is shown herein Figs. 2 and 3. The printer frames are secured in fixed relationship to each other by various bars, rods, and shafts, as shown in the parent application. The printer frames are in turn secured to the top surface of a sub-base (not shown), and the mechanism of the machine is enclosed in a suitable case or cabinet 68 (Fig. 2).

Depression of any one of the operating keys releases a key lock shaft 69 (Fig. 2) to the action of a spring (not shown), which rocks said shaft a slight distance clockwise to operate the clutch mechanism which connects the operating motor to a mainshaft 10(Figs .,2 and .3) journ aled in the main frame 60, and simultaneously operates the switch mechanism which closes the circuit to the operating motor, causing said motor to function. After the machine has performed the proper number of cycles to complete the type of operation being executed, the key lock shaft 69 is returned counter-clockwise to disengage the clutch mechanism and to simultaneously open the switch to the electric motor. When the machine is operated manually, the operating keys are used for releasing the machine in exactly thesame manner as when said machine is operated electrically,

Keyboard .Referring to Fig. 1,. which is a diagrammatic showing of the keyboard, it will be seen that there are nine rows of amount keys II and two rows of check-counting keys i2 and 12, which are similar in' many respects to the amount keys II but have their own counting wheels on the No. 1 or upper totalizer line for counting the number of checks listed in posting an account.

The present machine is provided with a total control plate for controlling the engaging and disengaging movements of the two totalizer lines in adding, subtracting, total-printing, and subtotal-printing operations. The positioning of the total control plate is controlled by a plurality of total control keys (Fig. 1) numbered 14 to 18 inclusive and located near the right-hand side of the keyboard. The total control keys 14, II, and

-18 are motorized or operating keys and are used dition to the operating keys 19 to 84, the transaction row also contains a Space Ledger key for spacing the combined statement and ledger sheet table; an Overdraft key 86, which is used to unlock the New Balance key 14 when the balance totalizer contains an overdraft; and a Res,soo,s7o

The position occupied by the symbol Release lease Lock-Proof key 01, which is used to unlock the Overdraft Pick-Up key 10 and the Balance Pick-Up key 04 when there is an amount in the balance totalizer. After an old balance is picked up and entered in the machine by the use of either the Overdraft Pick-Up Key 19 or the Balance Pick-Up key 04, these keys are then locked against depression until a new balance is taken, thus insuring that the old balance is not picked up more than once. The Release Lock-Proof Key 81 is used to unlock these keys in case it is desired to use the keys I! and 84 more than once.

Normally the Overdraft Pick-Up key I and the Balance Pick-Up key 04 do not print upon the statement sheet; however, when it is desired to have the old balance recorded, a Balance Forward key 80, located in the total row, is depressed in conjunction with these keys and causes the amount of the old balance to be printed on the ."Balance Forward" line of the statement sheet. A Release key 89 is provided for releasing the Balance Forward key, which is not released automatically at the end of machine operations. The Space Ledger key 85, like the transaction keys 19 to 00 inclusive, is an operating key.

Located to the'left of the transaction keys is a symbol row containing ten keys for printing identifying symbols adjacent items listed under the influence of the transaction keys. The symbol keys 90 are normally staydown keys; however, a release key 9|, located at the top of this row of keys, is provided for releasing the symbol keys when desired. The NC symbol key is depressed in conjunction with the Check key 82 when it is desired not to have the debit item being posted counted by the automatic check-counting mechanism. In other words, the NC symbol key, which signifies non-count," disables the automatic check-counting mechanism. The NC key, in addition to disabling the automatic checkoounting mechanism, also causes the symbol NC to be printed opposite the debit item or check which was not counted.

The monthly bookkeeping or service charge is deducted from the customer's account by setting up the amount on the amount keys II and using the Check key 82. When the service charge is posted, the SC symbol key 90 is depressed in conjunction with the Check key 82 to cause the symbol for service charge (SC) to be printed opposite the amount of the service charge, and the depression of the SC key also disables the automatic check-counting mechanism, so that the service charge item will not be counted.

All of the symbol keys 90, with the exception of the NC and the SC keys, are simply printing keys and cause identifying symbols to be printed opposite the corresponding items. For example, the IN key is an Interest key and causes the symbol IN to be printed opposite the amount of an interest item. The IS or List symbol key is used when it is desired to list the total amount of a bunch of checks in one check operation, and this type of operation is identified as such by the symbol LS printed opposite the amount. When the total amount of a bunch of checks is listed in this manner, the number of checks in the bunch is set up on the check-counting keys 52 and 12, thus causing the total number of checks to be entered in the check-counting wheels. The use of the check-counting keys 52 and 12 to list the number of checks in a bunch or bundle renders the automatic check-counting mechanism inoperative during such listing.

key II (Fig. l) is also an automatic position for automatically printing the symbol EC for Error Correction and is rendered effective by depres-' sion of either the-Deposit Correction key 00 or the Check Correction key 08.

A Key Release Lever 02 (Fig. 1), located at the extreme right-hand side of the keyboard, is

provided for releasing any of the keys with the exception of the stay-down keys, which include the Symbol keys 00 and the Balance Forward key 80.

The manner in which the total control keys II to I0 inclusive and the total control plate control the engaging and disengas ns movements of the two totalizer lines is fully explained in the Shlpley patents referred to previously and in the United States Patent No. 2,262,256, Issued to Shipley et al. on November 11, 1041, to which reference may be had for a more detailed descrip- I tion of this mechanism.

Amount banks and amount diflerentials The nine banks of amount keys and their associated differential mechanisms are alike in every respect and are similar in construction to those shown in the patents to Shipley and Goldberg referred to hereinbefore. Inasmuch as the amount banks are alike, it is believed that a description of one of said banks and the differential mechanism associated therewith will be sufflcient.

Fig. 2 is a transverse sectional view of the machine taken just to the right of one of the amount banks, showing said bank and its associated difierential mechanism, which will be considered as representative of all the amount banks.

The amount keys H are mounted in a key bank framework 02 supported by rods 00 and 00 extending between the main frames 00 of the machine. The depression of any one of the amount keys II rocks a zero stop pawl at, for this particular denomination, counter-clockwise out of the path of a reset spider 91 free on a hub of an amount differential actuator 08 rotatably supported on a bushing 99 extending between two similar support plates I00 (only one shown here) said plates in turn supported by rods MI and I02 extending between the main frames 00. There is a pair of supporting plates I00 for each amount differential mechanism, and a tie rod I03 extends through holes in the center of the bushings 00 to secure all of the amount differentials in a compact unit.

A slot in the forward end of the spider 01 engages a stud I04 in a forward extension of a bell crank I05 pivoted on an extension of the actuator 98. The bell crank I05 and a companion crank I'06, likewise pivoted on the extension of the actuator 98, together support a differential latch I01 for horizontal shifting movement. A

\ spring I00 urges the cranks I05 and I00 and the latch I 01 rearwardly to normally hold a footshaped projection I09 of said latch in engagement with a shoulder IIO on a differential driving segment lll rotatably supported on the hub of the actuator 98. A link H2 pivotally connects the driving segment III to a cam lever III pivoted on a stud III in the left-hand one of the plates I00. and said lever H3 carries rollers III and H0, which cooperate, respectively, with the peripheries of companion plate cams Ill and H8 secured on the main shaft I0. Depression of any one of the amount keys 1I moves the lower end of the stem thereof into the path of a depressed amount key 1I.

rounded surface II9 on an extension of one arm of the bell crank I05.

In adding operations, the main shaft 10 and the cams H1 and I I9 make one clockwise revolution, causing the lever H3 to rock the driving segment I I I first clockwise and then back to normal position. Clockwise movement of the segment III causes the shoulder IIO thereon, in cooperation with the extension I09 of the latch I61, to carry said latch and the amount actuator 96 clockwise in unison therewith until the rounded surface II9 contacts the stem of the This rocks the bell crank I05 and its companion crank I06 counterclockwise to disengage the projection I09 from the shoulder I I0 to interrupt the clockwise movement of the actuator 96 and to position said actuator in proportion to the depressed amount key N. Disengaging movement of the latch I01 moves a rounded extension I20 thereof into engagement with the corresponding one of a series of locating notches I2I in a plate I22 secured between the rod I M and an upward extension of the left-hand support plate I00.

After the latch I01 is disengaged from the I shoulder I I0, an arcuate surface I25 on the segment I I I' moves opposite the projection I09 to retain said latch in set position.

When the lever I I3 reaches the terminus of its clockwise movement, a roller I26 carried thereby supported bya shaft I36 joumaled in the main pivotally mounted on a stud I in a segmental gear I42 free on a shaft I43 journaled in the .main frames 60.

The teeth of the segmental gear I42 mesh with the external teeth of an extemal-intemal ring gear I44 (Fig. 2) having internal teeth,

which, in cooperation with the periphery of a disk I45 fixed on a shaft I46 supported by brackets I41 (Fig. 3) secured to a cross bar I43 and the main framework of the machine, form a rotatable support for said gear I44. The bar I46 (Fig. 3) is secured to the main frames 60 of the machine. The internal teeth of the ring gear I44 (Fig. 2) mesh with a pinion I49 rotatably'supported in a boring in the disk I45 and secured to -a square shaft I50. The pinion I49 and the square shaft in turn drive pinions similar to the pinion I49,'which drive connections to type carriers, as shown in the parent case.

The external-internal gear method of driving the type wheels of column-printing accounting machines is fully explained in United States Patent No. 2,141,332, issued to Charles H. Arnold, and embodies an application of the well-known principle of type wheel driving mechanism disclosed in United States Patent No. 1,693,279, issued to Walter J. Kreider.

The plate I40 (Fig. 2) carries a stud I55. which is" engaged by a slot in the end of a zero elimination operating slide I56 having parallel slots which engage, respectively, a shaft I51 journaled in brackets I56 secured to the base 6|, and a rod I59 supported by arms I60 (only one shown here) secured to the shaft I51. A spring I6I, tensioned between the segment I31 and the plate I40, normally maintains the lower end .of the cam slot in said plate -I 40 in engagement with the stud I39, as shown here.

Inasmuch as the zero elimination mechanism shown here is similar to and functions precisely like the zero elimination mechanism disclosed in United States Patent No. 2,141,333, issued December 27, 1938, to Charles H. Arnold, it is believed that a brief description of this mechanism as shown in Fig. 2 will be sufiicient.

The zero elimination slide, I56 carries a roller I 62, which cooperates with an arcuate surface I 63 on a slide-operating arm I64 free on a shaft I65 joumaled in the brackets I56. The arm I64 is connected by a hub I66 tween the shaft I65 to a companion arm I61, which cooperates with a stud I68 in the arm I64 for the next lower denomination. Likewise, the arm I64 for the denomination being described carries a stud I63, which cooperates with the arm I61 for the next higher denomination, and so on. The stud I63 in the arm I64 for the highest denomination cooperates with an arm similar to the arm I 61, which is secured to the shaft I65, and said shaft is rocked first clockwise near the beginning of machine operations and back to normal position in the manner shown in Fig. 5 of the Arnold patent referred to above. Clockwise movement of the shaft I65 and the arm I61 for the highest de-,- nomination is transmitted through the stud I63 to the arm I64 for said highest denomination, and on down the line through all the denominations to rock the arm I64 shown here first clockwise to shift the slide I56 rearwardly to disengage the slot in said slide from the stud I in the cam I40:

Assuming, for example, that a key has been depressedin the amount bank shownin Fig. 2, after the slide I56 therefor has been shifted rearwardly out of engagement with the stud I55 and after the actuator 96 has been positioned under influence of the depressed key 1 I, the roller I26 engages the arcuate surface I21 to position the beam I28, the link I32, and the segments I34 and I31 in proportion to said depressed amount key. Prior to the positioning of the segment I34 as explained above, an aliner I69 (Fig. 2) secured on the shaft I10 .ioumaled in the main frame is rocked clockwise out of engagement with teeth "I in the segment I34, and, after said segment is positioned under the influence of the beam I26, said aliner I69 is engaged with the teeth I H of the segment I34 to secure the segments I34 and I31 against displacement.

Positioning of the segment I31 moves an arcuate surface I 12 thereon into the path of a roller I13 carried by the arm. I64 for this parwhen the shaft I81 and the arms I88 are rocked counter-clockwise and back to normal position after the segments I81 have been positioned under the influence of the depressed amount keys, as explained above.

directly from this set position to their new position in the succeeding machine operation. The usual transfer mechanism is provided for transferring tens digits from lower to higher denominations in adding and subtracting operations.

Totalizers As explained previously, the machine embodying this invention has two lines of totalizers, in-

- cluding an upper or No. 1 totalizer line and a of the spring I14, to cause the notch in the end of said slide to'reengage the stud I88. After the notch in the slide has reengaged the stud I85, counter-clockwise movement is imparted to the shaft I51, the arms I88, and the slide I58 by mechanism similar to that shown in Fig. 4 of the Arnold Patent No. 2,141,333, referred to above. Counter-clockwise movement of the slide I88 rocks the zero elimination cam plate I48 clockwise, causing the cam slot therein, in cooperation with the stud I88, which is held stationary at this time, to rock the segment I42 counter-clockwise against the action of the spring I8I to move the ring gear I44 clockwise from zero position, as shown here, to one position beyond zero, which in this case is a blank or non-printing position. Obviously, zero printing will be eliminated in a like manner in all higher denominations. In other words, the zero elimination mechanism functions when a key H is depressed in row five of the amount keys (Fig. 1) to cause the zeros to print in the four lower denominations and to eliminate the printing of zeros in the four higher denominations.

After the amount actuator 88 (Fig. 2) has been positioned under the influence of the depressed amount key 1 I, as explained above, the wheels of the selected totalizer are engaged with the corresponding one of two sets of teeth I and I18 thereon, after which return movement of the cam lever H3 and the segment III causes the arcuate surface I25 on said segment to move beyond the sole of the projection I09 on the latch III1 to permit said latch, under the influence of the spring I88, to drop behind the shoulder III! to disengage the rounded nose I of said latch from the notch I2I in the plate I22. At the same time, an enlarged surface on the segment III engages a stud I19 carried by the actuator 88 and returns said actuator counter-clockwise in unison with said segment to zero position. This return movement counter-clockwise of the actuator 88 rotates the wheels of the engaged totalizer or totalizers in proportion to the value of the depressed amount key H to add or subtract in said totalizer or totalizers the amount represented b the depressed amount key 1I f If no amount key N is depressed, the zero stop pawl 98 remains in the path of the spider 91 and, upon initial movement of said spider and the actuator 88, engages an extension of aid spider and breaks the latch I81 in zero position, after which the roller I28, in cooperation with the beam I28, positions the segments I34 and I31 and associated mechanism in proportion thereto to position the type wheels for this .particular amount bank in zero position.

At the end of any type of operation, the actuator 88 (Fig. 2) is always returned to home position, as shown here; however, the link I32 and the segments I34 and I81 and the printing mechanism controlled thereby remain in set position at the end of the machine operation and are moved back or No. 2 totalizer line. The No. 1 totalizer is a balance totalizer, often referred to as a crossfooter, and comprises denominational sets of plus wheels I88 (Fig. 2) and denominational sets of minus wheels I8 I, said plus and minus wheels of each denominational order being reversely geared together, so that when one wheel is turned in one direction the other turns in the opposite direction and vice versa. The balance totalizer is supported in a shiftable framework I88 (Fig. 2) in turn supported between the main frames 88. The shiftable framework I88 for the balance totalizer includes a shaft I84 (Fig; 2) having mounted on opposite ends thereof rollers which engage similar guide slots in two shifting cam plates, as shown in the above-named patents and in the parent case, secured, respectively, to the right and left main frames 68.

The mechanism for enga ing and disengaging the totalizers with and from the actuators I15 and I18 is well known in the art, and, for a detailed description thereof, reference may be had to the parent case and to the patents referred to above.

The No. 2 or back totalizer line (Fig. 2) has thereon two add-subtract totalizers, one for the storing of checks and the other for the storing of deposits, the add-subtract feature being necessary in each case for the check and deposit correction features. The add-subtract totalizer for the storing of checks comprises adding wheels and subtracting wheels 2I8, which are geared together for reverse movement in exactly the same manner as the No. l or balance totalizer wheels, explained above. The deposit totalizer comprises adding wheels 2 I 9 and subtracting wheels, which are likewise geared together for reverse movement. In addition to the two adding and subtracting totalizers, the No. 2 totalizer line includes a set of adding wheels (not shown) for the storing of total new balances lus and a set of adding wheels (not shown) for the storing of total new balances minus. For a disclosure of these storage totalizers, reference may be had to the parent case.

In new balance operations, if the balance totalizer contains a plus amount, the plus side of said balance totalizer will be reset and the amount thereon will be simultaneously transferred to the adding wheels, and if said balance totalizer containsa negative amount, the minus wheels I8I thereof will be reset and the amount thereon will be simultaneously transferred to the subtract wheels on the No. 2 totalizer line. The No. 2 totalizer line is mounted in a shiftable framework 228 (Fig. 2) similar in every respect to the framework I8I for the balance totalizer, and this framework includes a shaft 224 similar to the shaft I84 for the balance totalizer. Mounted on each end of the shaft 224 are rollers (not shown here), which cooperate with guide slots in totalizer engaging cam plates mounted on the inside of the main frames 88, as shown in Fig. 16 of the parent case.

6 Transaction keys and differential mechanism associated therewith All of the transaction keys, with the exception of the Overdraft key 86 (Fig. 1)v and the Release Lock Proof key 81, control the positioning of the transaction differential mechanism shown in Fig. 3. However, only the Deposit key 8 I, the Deposit Correction key 88, the Check key 82, and the Check Correction key 83 are effective in checkposting operations to select their corresponding sides of the two add-subtract totalizer on the No. 2 totalizer line. The two adding totalizers on the No. 2 totalizeiline for storing the total new balances plus and minus are not engaged with the amount actuators in check-posting operations, but are only engaged therewith in new balance operations to store the amount of the new balance. The transaction differential mechanism controlled by the transaction keys, in addition to selecting the totalizers on the No. 2 line corresponding to said keys and the proper side of the balance totalizer for engagement with the amount actuators, also controls the positioning of type wheels for recording characters representative of the type of operation being performed adjacent the amount recorded.

Depression of any one of the transaction keys, with the exception of the keys 88 and 81 (Fig. 3), rocks a zero stop pawl 21! out of the path of the forward end of a spider 212, rotatably supported on a hub 213 on a transaction differential arm 214, said hub 213 in turn being rotatably supported by a stud 215 extending between two identical support plat-es 213 (only one shown here), mounted on the rods I8! and I82.

The spider 212 has in the forward end thereof a slot, through which extends a stud 211 in a latch-operating arm 218 pivotally mounted on the differential arm 214, and which, .in cooperation with a companion arm 219 also pivoted on the arm 214, supports a transaction differential latch 288 for shifting movement. The latch 288 has a foot-shaped extension 28!, normally maintained in engagement with a shoulder on a transaction differential. operating segment 282 free on the stud 215 by a spring. The segment 282 is connected by a link 283 to a cam lever 284 free on a stud 285 supported by the plate 215. The lever 284 carries rollers 286 and 281, which cooperate, respectively, with the peripheries of companion plate cams 288 and 289 secured on the main shaft 18.

Depression of any one of the transaction keys, with the exception of the keys 88 and 81, moves the lower end of said key into the path of a rounded extension 292 of the latch arm 218 at the same time the zero stop pawl 21! is moved out of the path of the spider 212. Operation of the machine causes the cams 288 and 289 to rock the lever 284 and the differential operating segment 282 first in a clockwise direction. The shoulder on the segment 282, in cooperation with the extension 28!, carries the latch 288 clockwise in unison therewith u ntil the rounded surface 292 engages the stem of the depressed key to rock the arm 218 counter-clockwise to disengage said extension 28! from the shoulder of the segment 282 and to engage a rounded extension 293 on the forward end of said latch 288 with a corresponding notch 294 in an alining plate 295 supported by the rod I8! and the plates 218. This positions the diflerential arm 214 in proportion to the depressed transaction key. Continued clockwise movement of the segment 282 causes table. The selecting disk mechanism is fully an arcuate surface 296 thereon, in cooperation with the sole of the foot-shaped extension 28!, to lock latch 288 in set position.

When the lever 284 (Fig. 3) nears the terminus of its initial movement clockwise, a roller 291 carried thereby engages a rounded surface 298 on a differential beam 299 pivotally mounted on the arm 214 and forces an arcuate surface on the upper edge of said beam into contact with an undercut portion of the hub 213 to position said beam in proportion to the depressed transaction key. The beam 299 is bifurcated to embrace a stud' 38! in a link 382, the upper end of which is pivotally connected to a segment 383 secured to one of the tubes I35 on the shaft I36 and the lower end of said link is pivotally connected to a segment 384 free on the shaft I38 and connected by a link 385 to a. gear sector 386 secured on the shaft I 43. The gear sector 388 meshes with the external teeth of an external-internal gear 381 rotatably mounted on a disk in turn supported by the shaft M8, and said gear 381 has secured thereto a ring gear 388, which meshes with a pinion 389 secured on a shaft 3 I 8 journaled in the brackets I41. Other pinions, secured on the shaft 3! 8, drive other internal-external gears similar to the gear 381, which position transaction type wheels located in the different columnar positions of the record material, so that a character indicative of the transaction being performed will be recorded on said record material. Also secured on the shaft I43 (Fig. 3) is a gear sector 3, which meshes with gear 3I2 free on a stud 3I3 secured in the base plate 8! The gear 3! 2 meshes with a gear 3I4 secured on a shaft 3I5 journaled in the printer framework, said shaft 3I5 in turn positioning selecting disks which control the operation of the printing hammersand the movement of the combined statement and ledger slip described in the parent case.

When the Check key 82 (Figs. 1 and 3) is used in check-posting operations, the depression of this key causes the cams (not shown) to select the plus wheels of the No. 2 check totalizer on the No. 2 line for the accumulation of the total amounts of checks.

When it is desired to make a correction in a check entry, the Check Correction key 83 (Fig. 1) is used, and this causes the selecting cams to select the lus side of the No. 2 check totalizer so that the amount of the check correction, which is a credit, will be added in the No. 2 check totalizer.

C'heck-countino mechanism A units bank and a tens bank of keys 12 and 52, respectively, located at the extreme left of the keyboard (Fig. 1) and similar in many respects to the amount banks 1! but disconnected therefrom, are provided for the automatic and the manual counting of checks. The automatic counting of checks is controlled by the Check key 82, and the depression of this key controls the zero stop pawl for the units check-counting bank, which zero stop pawl, in addition to the usual zero stop, also has a stop located in the 1" position of the units bank 12. Depression of the Check key 82 brings this second stop into the path of the diflerential spider for the units checkcounting bank and causes 1" to be added in the check-counting wheels II88 (Fig. 9), which wheels have the same formation as wheels I88 (Fig. 2).

The Check Correction key .83, which is used to withdraw or cancel a check erroneously posted, also exercises control over the automatic checkcounting banks 12 and 52 and causes 1 to be automatically subtracted from the check-counting wheels to compensate for the withdrawal or cancellation of a check. This subtraction of 1 in the check-counting wheels is efiected by adding the complement 99" therein, and depression of the Check Correction key 88 releases the zero stop pawls for the units and the tens checkcounting banks to permit the differential mechanisms 15 (Fig. 9) for said banks to travel full distance to ninth positions to effect the subtraction.-

Often it is the practice to have all the checks of a certain class or designation assembled in'a bundle, and the total amount of each bundle of checks is set up on the amount keys and entered as a single item by using the Check key 82. In this case, the keys I2 and 52 of the two checkcounting banks are used to set up the total number of checks in each bundle, and the use of these check-counting keys disables the automatic check-counting mechanism and causes the total number of checks in the bundle to be entered in the check-counting wheels. The check-counting mechanism will now be described in detail.

The banks of check-counting keys I2 and 52 (Fig. l) are similar in construction to the amount banks II (Fig. 2), and each has a diflerential mechanism including a spider 118 (Fig. 4) for the units keys 12 and a spider 119 (Fi 6) for the tens keys 52, which are similar to and function in exactly the same manner as the spider 91 for the amount bank shown in Fig. 2. Each spider controls a differential rack I II (Fig. 9) like the rack H5 in the amount bank differentials. The spider 118 for the units check-counting bank has a stud I80 with a flat surface thereon, which cooperates with a zero stop surfacef|8| and a surface I82 corresponding to the 1 position of the units differential mechanism on a zero stop pawl I88 free on a shaft I84 journaled in the machine frame-work. A torsion "spring I85, which encircles the shaft I84 and opposite ends of which engage a stud I88- in the stop pawl I88 and a bushing on the rod IOI, urges said stop pawls clockwise to normally maintain a tail 181 thereon in contact with the bushing on said rod i M.

The differential spider 119 for the tens checkcounting keys 52 (Fig. 6) carries a stud I88 with a fiat surface, which cooperates with a zero stop surface I89 on a zero stop pawl I90 free on the relationship to a finger I96 by a hub 191 free on Q the rod IN. The finger I99 (Fig. 4) cooperates with a stud I98 in an upward extension of an arm 199 free on a stud 800 in the key bank frame- 808 free on the rod IN to a finger 809, which cooperates with a stud 801 in an upper extension of an arm 808 free on a stud 809 in the tens key frame. An extending finger 8I0 of the arm 000 cooperates with the rod 802 in the same manner as the finger I for the arm I99 (Fig. 4). The studs I98 and 801 (Figs. 4 and 6) in the arms I98 and 808 also cooperate with similar carnming surfaces on corresponding levers 8H and M2 pivoted, respectively, on studs M3 and 8, secured, respectively, in the units and tens key frames. Loosely connected to the lever 8 is a lever-operating bar M5, the upper end of which is linked in a similar manner to the key frame, so that said bar may be shifted. The bar 8 has thereon a plurality of camming surfaces, which cooperate, respectively, with studs H8 in each of the units keys I2.

Depression of one of the units keys "I2 causes the stud 8| 8, in cooperation with the camming surface 8Il, to shift the bar 8I5 downwardly to rock the lever 8H clockwise. Clockwise movement of the lever 8| I causes the camming surface thereon, in cooperation with the stud I98, to rock the finger I90, the hub I91, and the lever I95 counter-clockwise. Counterclockwise movement of the lever 195 is transmitted through the stud I86 to the zero stop pawl I88 to rock said pawl to the second position shown in dot-and-dash lines, to move both the 0" surface I8I and the l surface I82 out of the path of the stud I80, so that the spider I18 and the associated differential mechanism will be positioned under the in fiuence of the depressed key I2.

The lever M2 for the tens check-counting bank 52 is loosely connected to the lower end of the control bar 8l5, similar in every respect to the control bar 8 l5 and having thereon a plurality of camming surfaces 8|9, which cooperate with studs 820 in each of the tens check keys 52. Depression of any one of the keys 52 rocks the lever 8l2, which in turn rocks the zero stop pawl I90 for the tens bank counterclockwise againstthe action of the spring 'I9I to the position shown in dot-and-dash lines in Fig. 6 to move the zero stop surface I89 of said pawl out of the path of the stud I88, so that the spider I19 and its associated differential mechanism will be positioned under the influence of the depressed tens check key 52.

In total and sub-total printing operations, the shaft 204 (Fig. 4) is rocked clockwise in the manner well known in the art and disclosed in the levers I95 and 804 is transmitted through the.

studs I and I92 to the respective zero stop pawls I88 and I to rock said pawls to ineffective positions as explained above, so that the spiders I18 and I19 are free to be positioned by the check-counting wheels, so -that the total number of checks may be recorded.

The lever I95 (Fig. 4) for the units checkcounting keys has an L-shaped slot 82I, through which extends a stud 822', said stud also adapted to cooperate with a projection 828 on the zero stop pawl I88. The stud 822 (Figs. 4 and 5) is secured in a crank 824 secured on the shaft I84.

The lever 884 (Figs. and 6) has-an L-shaped slot 825, through which extends a stud 826, which also cooperates with a projection 82! on the zero stop pawl 198 for the tens check keys 52, and said stud 826 is secured in a crank 828 in turn secured on the shaft 184. The shaft 184 extends the full length of the machine and has secured near the right-hand end thereof a crank 829 connected by a link 838 to a control segment 83l for the transaction keys, and said segment is rotatably supported on a bushing 832 similar to and in axial aiinement with the bushing 99 (Fig. 2) for the amount bank shown here. A spring 833 urges the segment 83! clockwise to maintain a camming surface 834 thereon (Figs. 5 and 8) in contact with a stud 835 in one arm of a yoke 836 free on a rod 831 supported by the key bank support plates. The yoke 836 is connected by a link 838 to a crank 839 secured to the key lock shaft 69.

Clockwise movement of the key lock shaft 69 (Fig. 8) when the machine is released for operation, as explained in connection with Fig. 2, through the link 838, rocks the yoke 836 counterclockwise to move the stud 835 away from the raised portion of the cam surface 834 to permit the spring 833 to yieldingly urge the segment MI in a clockwise direction. Each of the transaction keys 19, 88, 85, 84, and 81 has therein a stud (Figs. 1 and 8), which, when any one of said keys is depressed, is adapted to move into a corresponding notch 84! in the peripheral surface of the segment 83I to obstruct clockwise movement of said segment by the spring 633 when the key lock shaft 69 is rocked clockwise upon release of the machine for operation. The transaction key 84 has therein a stud, which moves into the path of a shoulder 842 on the right-hand end of the peripheral portion of the segment; 83| to obstruct clockwise movement of said segment 83!. Consequently, when any one of the keys just named is depressed, the segment 83! will be rendered inoperative. The Check key 82 has therein a stud adapted to cooperate with'a notch 843 in the peripheral surface of the segment 63L said notch 843 being substantially larger than the notches 84l, thus providing enough clearance between the left-hand or lower wall of said notch and the stud in the Check key 82 to permit partial movement of the segment 83! under the influence of the spring 833 when the key lock shaft 69 is rocked at the beginning of machine operation. This partial clockwise movement oi the segment 83| through the link 830 rocks the crank 829, the shaft 184 (Figs. 4, 5, 6, and 8), the crank 824, and the stud 822 counterclockwise a sufficient distance to cause said stud 822, in cooperation with the extension 823 of the zero stop pawl 183, to rock said pawl counterclockwise against the action of the spring 185 to move the 0 stop surface 18l thereon out of the path of the stud I80 and to move the 1" surface 182 into the path of said stud, so that, upon machine operations, when the Check key 82 is depressed, the differential mechanism for the units check-counting keys l2 and including the spider 118 will be moved to 1 position under the influence of the surface 182 stopped in zero position. This counted automatically wheels.

A transfer mechanism between the units and the tens counting Wheels eifectsthe transfer of the tens digit to the tens accounting wheel when the units wheel passes through zero. The checkpermits 1" to be in the check-counting counting wheels are mounted on the No. l or instead of being" balance totalizer line(Figs. 2 and 9), and, as the balance totalizer is. an add-subtract totalizer and is adapted .to be shifted lateraliy to bring either the plus side or the minus side thereof into engaging relationship with the amount actuators. it is necessary to provide two wheels H88 in each order of the check-counting banks to take care of this condition. The two wheels in each order of the check-counting banks are not geared together for reverse rotation, as are the wheels of the balance totalizer, but instead are secured in fixed relationship to each other by a sleeve H82, and in effect function the same as one adding wheel. This makes it possible to add checks in the check-counting wheels when the balance totalizer is in subtract position under the influence of the Check key 82 and also makes it possible to take a sub-total or a total of the checkcounting wheels when either the plus side or the minus side of the balance totalizer is sub-totalized or totalized.

When the shaft 184.is moved a partial distance by depression of the Check key 82, as explained above, the crank 828 (Figs. 5 and 6) and the stud 826 for the tens check-counting keys 52 are moved in unison therewith. However, it will be noted, by

referring to Fig. 6, that suflicient clearance is provided between said stud 826 and the extension 821 on the zero stop pawl 198 for the tens keys and that no movement is imparted to said zero stop pawl 198, and, as a result, the stop surface 189 remains in the path of the stud 188 and positions the differential mechanism for the tens checkcounting bank at zero.

The Check Correction key 83, as previously explained, is used for correcting a check or debit item which was erroneously entered in a previous stop operation, and, as this previously-entered check, which is being cancelled in the present operation, was automatically counted by the check-counting mechanism, it is necessary to subtract 1 from the check-counting wheels when a Check Correction operation is performed.

By referring to Fig. 5, it will be noted that the Check Correction key 83-has no stud, as have the other transaction keys, and no notch is provided therefor in the periphery of the segment 83l. Consequently, depression of the Check Correction key permits full clockwise movement of the segment 93l upon release of the machine for operation, and this full movement is imparted to the shaft 184, the crank 824, and the stud 822 (Figs. 4, 5, and 6) torock the zero stop pawl 183 for the units check-counting keys 12 full distance to move bothsurfaces TM and 182 out of the path of the stud 180. Full movement of the shaft I84, the crank 828, and the stud 826 causes said stud 826, in cooperation with the extension 821, to move the zero stop pawl full distance counter-clockwise to move the zerostop surface 189 thereon out of the path of the stud 188. This frees the differential mechanism for both the units and the tens check-counting banks for full movement to the 9 position to cause the complementary figure 99 to be added in the checkcounting wheels, which in effect is the same as subtracting 1 from said wheels.

At times, the Check key 82 (Fig. 1) is used in connection with the amount keys 1| to post items other than checks, and in this case itis desirable to render the automatic check-counting mechanism inoperative. One such debit item. and probably the most commonly used in connection with checking accounts, is the service charge for handling the depositors checking accounts, and

when thisitem is posted, the automatic checkcounting mechanism is disabled by depression of the SC symbol key 88, which is always used to designate service charge items. At times, it is desirable not to have the automatic checkcounting mechanism function in connection with the posting of checks or other debit items, and depression of the NC symbol key 88 disables the automatic check-counting mechanism, so that these items will not be counted.

Secured on the shaft 184 (Fig. is a crank 844 connected by a link 845 to a control segment 846 for the symbol keys 88, said segment being pivoted on the bushing 882 adjacent the control segment 83L A spring 841 urges the segment 848 clockwise to maintain a camming surface 848 on an extension thereof in engagement with the stud 885 in exactly the same manner as explained for the segment 8. g The "service charge symbol key 98 (Figs l and 5), designated by the letters SC, and the non-coun symbol key, designated ;by the letters NC," each has therein a stud adapted to cooperate with corresponding projections 848 and 858' formed on the peripheral surface of the segment 848;

The manner in which the segment 848 is linked to the shaft 184 causes said segment to be operated in unison with the segment 88! when the key lock shaft 88 (Fig. 8) is rocked clockwise by the initiation of machine operation. Depression of either the service charge" symbol key 88 or the non-coun symbol key 88 moves the stud carried by the depressed key into the path of the corresponding projection 848 or 858 to block clockwise movement of the segments 848 and 881 to prevent operation of the automatic checkcounting mechanism, even if the Check key 82 is depressed. The depression of either of these keys likewise causes an identifying character to be printed opposite the corresponding amount on the statement sheet.

Inasmuch as the Check key 82 (Fig. 1) is used in conjunction with the Sub-Total key and the Clear key 11 either to read or to clear the check totalizer on the No. 2 line, it is necessary to provide means under control of the Sub-Total and the Total keys 18 and 11 and the other total keys to prevent operation of the automatic checkcountingmechanism at this time. I

Referring now to Figs. 1, 5, and '7, a total row control bar 851 is mounted for circular shifting movement by means of slots therein in cooperation with two studs 858 in the total key framework. The bar 851 has a plurality of camming projections 85l, which cooperate respectively with studs in each of the control keys 14 to 18 inclusive and the Balance Forward key 88. The lower end of the bar 851 has a slot, which embraces a stud 852 in a latch 858 free on the rod I81 and having an L-shaped slot 854 in a right-hand extension thereof, through which extends a stud 855 in a crank 856 secured on the shaft 184.

Depression of one of the control keys 14 to 18 inclusive or of the Balance Forward key 88 causes the stud therein, in cooperation with the corresponding camming projection 85I, to shift the control bar 851 downwardly to rock the latch 853 counter-clockwise to cause the vertical branch of the L-shaped slot 854 to latch over the stud 855 to secure the crank 855 and the shaft 184 against movement to prevent the automatic check-counting mechanism from functioning. When none of the total control keys is depressed,

the horizontal branch of the L-shaped slot 854 is opposite the stud 855, as shown in Fig. "l, and permits unobstructed operation of the shaft 184.

Depression of any one of the units checkcounting keys 12 (Fig. 4) causes the stud 8|8 therein, in cooperation with the camming surface M1 on the control bar M5, to rock the lever 8H clockwise, causing the camming surface thereon, through the stud 188 and the finger 188, to rock the lever counter-clockwise to move the vertical branch of the L-shaped slot "I in said arm over the stud 822 to block movement of the shaft 184, thereby disabling the automatic check-counting mechanism when a units checkcounting key 12 is depressed. Similar mechanism, illustrated in Fig. 6 and explained hereinbefore, is provided for the tens check-counting keys 52, and, when any one of these keys is depressed, the arm 884 therefor is rocked counter-clockwise to move the vertical branch of the L-shaped slot 825 over the stud 828 to lock the shaft 184 against movement, thereby disabling the automatic check-counting mechanism when any one of the tens check-counting keys 52 is depressed, even though the Check key 82 (Fig. 1) is used to initiate machine operation.

An example of the necessity of the latching mechanism described above to prevent operation of the shaft 184 when the check-counting keys 12 and 52 are depressed is the setting up of the number 20" on the check-counting keys. In this case, the 2 key in the tens check-counting row is depressed, and no key is depressed in the units rows. Inasmuch as the Check key 82 is used to initiate an operation of this type, the 1 surface 182 of the zero stop 188 for the units bank would in this case be moved into the path of the stud 188 to cause 1 to be automatically added in the units order of the check-counting wheels were it not for the latch mechanism shown in Fig. 6, which latches the shaft 184 against movement, so that the 0" surface 18l of the zero stop pawl 188 will remain in the path of the stud 188 to position the diflerential for the units check-counting bank at zero.

The latching of the slots 821 and 825 over the studs 822 and 825 upon operation of the throwout shaft 284 and the rod 882 in sub-total or totalprinting operations is purely incidental, due to the construction of the mechanism, andperforms no essential function, as depression of any one of the total control keys 14 to 18 inclusive or the Balance Forward key 88 has already latched the shaft 184 against movement before the shaft 284 7 receives suflicient clockwise movement to latch said shaft 184 against movement.

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

What is claimed is:

1. In a machine of the class described, the combination of a totalizer line; a set of add-subtract totalizer elements on the line consisting of pairs of reversely rotatable gears spaced apart on said line, a set of item-counting elements on the line consisting of pairs of rotatable gears, each pair connected to rotate together; actuators for the totalizer elements; manipulative devices to control the movement of said actuators? means to condition the set of add-subtract totalizer elements for a subtract operation by shifting the said line to move one of each pair of said reversely rotatable gears out of alignment with the actuators and to move the other one of each pair of said reversely rotatable gears into alignment with the actuators; actuators for the counting elements, one gear of each pair of counting gears normally aligned with the counting element actuators, and the other gear of each pair of counting gears movable into alignment with the counting element actuators when the totalizer line is shifted to condition the set of add-subtract totalizer elements for subtract operations, whereby items can be subtracted from the add and subtract totalizer and items can be added into the item counting elements during the same machine operation; means normally eflective to arrest the actuators for the counting elements in zero, the arresting means for the units order also adapted to arrest the actuator for the units counting element in 1 position; and means rendered effective by the conditioning means to render the arresting means for the actuator for the units counting element ineffective to arrest said actuator in zero, but effective to arrest said actuator in "1 position to cause 1 to be added in said counting element.

2. In a machine of the class described, the combination of a totalizer line; a balance totalizer on the line consisting oi pairs of reversely rotatable gears spaced apart on said line for computing debit and/or credit items; an item-counting device on the line consisting oi. pairs of rotatable gears, each pair connected to rotate together; actuators for the item-counting device; means normally effective to stop the actuators in zero position, the stopping means for the units actuator also adapted to stop said actuator in 1 position; means to condition the balance totalizer for a subtract operation by shifting the said line to move one of each pair of said reversely rotatable gears out of alignment with the actuators and to move the other one of each pair of said reversely rotatable gears into alignment with the actuators, one gear of each pair of counting gears normally aligned with the counting element actuators, and the other gear of each pair of counting gears movable into alignment with the counting element actuators when the totalizer line is shifted to condition the set of add-subtract totalizer elements for subtract operations, whereby items can be subtracted from the add and subtract totalizer and items can be added into the item counting elements during the same machine operation; a manipulative means to initiate said subtract operation to subtract a certain class of items from said balance totalizer; and means controlled by the manipulative means to render the stop means for the units actuator ineffective to stop said actuator in zero osition and efiective to stop said actuator in "1 position to automatically count 1 for each item in said certain class.

3. In a. machine of the class described, the combination of an item-counting device including units and tens orders of counting elements; actuators for each order of item-counting elements; means to position the actuator for the units element in either zero or "1 position, said means normally effective to position said actuator in zero position; means to position the actuator for the tens element in zero position; means including a member effective upon machine operation to control the above positioning means; a control key to initiate machine operation to enterv a certain class of items, said control key also adapted to controlthe member to cause the positioning means for the units actuator to be moved to one position to enter 1 in the counting element for each item entered in said certain class; other control keys for entering items in another class, said other keys adapted to control the member to cause the positioning means to position the actuators at zero; and a correction key to cancel items erroneously entered insaid certain class; said correction key permitting the member to move the positioning means for both actuators to ineffective position to in turn permit said actuators to travel full distance to 9 position, to add 99 to the counting elements, which in efiect' is equivalent to subtracting 1 from said element for each item cancelled.

4. In a business machine adapted to perform adding, subtracting, and total-printing operations, said machine having printing means, a totalizer line, and a balance totalizer on the line for the recording and registering of positive and/or negative items, the combination of an item-counting element on the totalizer line; depressible item-counting keys; a difierential device to transfer the number of items from the keys to the item-counting element and the printing means in adding and subtracting operations and to transfer the total number of items from the item-counting element to the printing means in total-printing operations; a stop member for the differential device; an actuator for the stop 10- member; depressible item-entering keys effective when depressed to prevent movement of the actuator to cause the stop member to arrest the diilerential device in zero position; a key for entering a particular item, said key efiectivewhen depressed to permit partial movement of the actuator to cause the stop member to arrest the differential device in 1 position to count the particular items; a correction key for the particular item, said key efiective when depressed to permit full movement of the actuator to move the stop member out of cooperative relationship with the differential device to permit said device to travel to "9 position to subtract one from the counting element by adding the complement 9 therein; means operated by depression of any one of the item-counting keys to move the stop member out of cooperative relationship with the diiferential device to cause said device to be positioned by the depressed item-counting key; and means efiective in total-printing operations to cause the stop member to be moved out of cooperative relationship with the diflerential device to permit, said device and the printing means to be positioned by the item-counting element.

AR'I'HUR R. COLLEY.

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