US2325960A

US2325960A - Digit transmitting system

Info

Publication number: US2325960A
Application number: US437116A
Authority: US
Inventors: Clair D Lake; Francis E Hamilton
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1942-04-01
Filing date: 1942-04-01
Publication date: 1943-08-03
Anticipated expiration: 1960-08-03
Also published as: GB564619A; DE898368C

Description

Aug. 3, 1943. c. D. LAKE Erm. 2,325,960

DIGIT TRANSMITTING SYSTEM med April 1, 1942 4 sheets-sneer 1 H snr/0N Kca- Afm-554 I V N ons F BY ATTORNEY Aus- 3, 1943. c. D. LAKE ETAL 2,325,960

DIGIT TRANSMITTING SYSTEM Filed April l, 1942 4 Sheets-Sheet 2 FIG. lb. BY @5% m/*mmm Aug. 3, 1943. c. D. LAKE Erm.

DIGIT TRANSMITTING SYSTEM Filed April 1, 1942 4 Sheets-Sheet 3 SETI/P '/YTERS Ridi-R104 'RMI-R304 INVENTORS 4A/f1.

TORNE Y Aug. 3, 1943. c. D. LAKE Erm. 2,325,960

DIGIT TRANSMITTING SYSTEM Filed April 1, 1942 4 Sheets-Sheet 4 i n llll11lnu11111171111111111111 FIG. 4.

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` ATTORNEY Patented Aug. 3, 1943 UN ITED STATES PT EN T i0 F F 10E ma: frmsm'rnwo wem munten, and'fmuis E-.Ham-

Aiwlieain April 1942, .Serial No. Aml

19 exams. (C1. 'm4a1-1e) This :invention .xtelatQS .tO @am imsmi'lmg machines :amd more lpaiatioulabr ,to the time Il which storage edm/lues .are y:utilised ito :amie he enemy for l controlling sukmecguent .vreoeiilrtg miemtions.

The -rnain objeQt of :the :presentimenion is :L0 Fremde en improved arrangementwhch enables the digit set up to be made in the stamgeallies in qorneet =dengxriinatioxm1 mosityn :mad [as :they `:111e :set aun, while a fsubomdinate Dhject mfithe 5m- -uention is :to enable fthe .message .demas nto Yhe :Sel: up denomnationally without recourse to werp strokeoperaltionsitmget them tonrunaralenoxninational melationship.

:As semlanatory, fin immer deyees fsuoh sans. im example, illustradginaztentmosmflhlidalmd VPilmlexnberrile?. Lilwheniafstotagegdeuie of four denominational orders is set -up yonder Qontrol of a een key ckeyboari'thentmjes afreasuooeashlely YHeade and, 'four d g'rts faire entered. fthe omer will be deft to night fto enter 6216, :for example. Recording Arm-:clxuinisms controlled idaheneby will be cori'ectly controlled with regarditmdennmmtio-nal relationslo `Eor'nunfilmfiss ,less Vhan *,the

fby zeno smokes of 4libe kaysinsomlar mo gat 511e proper :denominational zrelwlansmpuwlih .uxegfnxi -tostihereeorcrmg'lrmzuhaafnioni. smbviousn setblxggmpthemumher-MBQ.

Storage deiriu of this mature are -almangedsbo havenaapaieibyqual toa the--gneatest amaumzthat can be ieritered, 'Ieqiing :for lesser fafgnofufns 'irepeated zero lkey smilies, and since -t'he lesser .amounts Y@me riufnmlly more dnenuentnthe setting up operations lameislowedidown. @he zero kw Y `fitrolfies .add to fthe fatigue Lof fthe Loperator rand Vdecreesie:.flshefeicienoy.

It has heretofore been combed 'in fmother mrmgemeziteas fonexamplerin BaentlNo. 2.1.'8,`10fl,:domed May 11:6, :1939,10 ,Set iupstheadigits @he atome devious as they meuf, no `zei-1o smokes et ell deems used, :and ubseguentlw Jcaiange `lelie Adfrmniimttional :welatonshp fwth megaazd to fthemecordlng elementssso than .variation in the number qf will :he .pr-

ally eomnenaatedsmd. @is ra nesulnthe ,uuitslzset recording, the liens, ,the .tens d1gtfrecotdn elle. Such oenommatiqnad fis ausually made .-subsequent to theeetuailfmftrw procedure. fllhemnesentmmmement Mees {prlnmllw in that :the entry is magie in whe lstorage sleizicessin nummer denominational order as the digits are summed, no later shift Ano I the recordingkolements Vming @their obiets .Qf fthemventimi will be pointed out in the following idegrplilkllmflams zand -lllustrated sin xthe ,asiempoxiymg 1d1awmss,1which disclose., by way of Mamme, 'me xsliyfullsle` of the invention andthe bestrmele, whh lwkeenlcpntemplates vof implying what :principlefla, and le, when slaszediin the miler mentioned, mmvide :a complete winleg @agravan of nhe elmlreal emmdman :of ville anreisen# :inf wallon.

21s. :2 'senile-ning maeva@ disclosing the :tkm ing of the relays.

Fis 3B ris a idiaermn of like @side @sed for sletftrsg 'up stle releve singly @s im mmhinailon 'LD eprssntfdisil Fis- A ris o Simian@ Miewfof :e Hell ximmifxl :losen of munching fmaehine fused im@ :lo he mamelles @Matieres arefmdifxgsis enrmlled bmaflsgyhfmrsl epnsistinsiofftan keys KM lm. 1.a) famille @site Mameluwe-whiehmfin the msualfl'fsmlemkeye boord mnsemgnt- 3mm kei' when filmneeed lpsesflts related ceniashqfzasieefmsemyfhe. vllnslemmth all :of tfhakey :levers sssball um do ilse Qnerabesttherehy'nd zmsaelose than mamans slm. -Elhis als a :60mm keybeomlfeonsimeiion ,soihot-adiagmnummicmmwmisabeleieed turbe Suiliclent Alo .undmmdithe aprem? keyhoansl.

:1n fthe nreirersedawangremnt, iwenvliheainitial fdqpresainofkey mi iihezrelaiie Webnews rswlosedznd rbhterfthe hail mutant closed Menem' l-neyfllll ssienresesi. ilhmll energmitsmelmdxeley lqlffiiizlmtmp new sfeweiaerd'when www' MH islas. filihe Qincuit forseereimim :of relays fis :61mm H84 ithmsh @mages SBOAHA @uw elosed, Bellecsxlllsaillis ithelemsedelmaolnmhe reIalfd KC rem/1,602 mnezlflmoushioenaebs @QA-e3, :to me :mi mines iM, fl 'me 'ruhe oerwaussly lines,imsitmeuamlmeatlvtmseepc- V Y.

llnihe fnlfeatism ai me etoraxerrelaizmlieee ...estas we :for smiling om data lo Misilmeri wioeerelximfehe -reourmnd @i murals www lfb-'.zlua tenssetzlklev-, anda s se?I 3D1-304. The hundreds digit of thenmle ,zziumlaersdesignat ilay 1 :the .units ordermbhe weitY 9 1fnl-ie rms, aube "f8" .gian xche. hundmeds :emmene in other wmdsnthe'newsr numused and :ma were smokes heine meqgined, mud lz-55 memdenominatomilrmderlandf-ehe higbrfpmefix digits representing the higher denominational orders in consecutive numerical order. The units digit of the above numbers represent the coding designation of. the relay. For example, in the numbers |I, |02. |03, |04, units digits l, 2, 3 and 4 represent the coding designation of relays and from the code in Fig. 3 it will be seen that the storage of a digit is effected by the energization of the relays in each storage unit, either singly or in combination.

If it be assumed that a key is depressed to cause a storage of the 6 digit. closure ofthe 6" key contact energizes relay KCS to close contacts KCO| and KCS-3, thus closing a circuit to energize relays |0l, |03 as follows: from |08 wire connected to line |04, through DOA- A contacts now closed, through contacts R3'A now closed, relay contacts RI A now closed in a manner to be explained, to one side o1 relay contacts KCE-i and KCS-3, through such relay contacts, and thence through relay contacts RIZ- 4. RIZMS now in position shown to the pickup windings of relays |0|, |03 and thence by a line |08 to the Wire |01 connected to negative line |05. ihroiufi DOA--B contacts now closed.

In the same manner, depression of the other keys |0| will selectively energize the relays IUI- |04 according to the code to set up a digit representation therein. It will be noted that each key depression will initially set up the digit representation in the units order of section A by relays lOl-|00, but, as will be later explained, if such relays were retained energized to represent a previous digit entry, they would have been cleared out, or deenergized, to receive the new digit entry.

In the circuit diagram relays (Fig. la) RI, Rl R2, R2', R3, R3', RI and R5 are sequence relays, it being noted that the relays with the prime designations are in shunt with other relays of the "f closes its contact RIA to energize relay coils R2,

R2. Relay contact RZA closes to energize relay coils R3, R3', etc. Relay contact RSA closes sequentially energizing relay R4. and in the same manner relay lR5 issequentially energized. The reiays RI-RS are energized in succession one after the other after a period of .075 sec. To insure full energization of relays RI-R5 upon quick key strokes, bail contacts |03 are preferably shunted by relay contacts Ri-I and R5-5 in series. Relay RI closes this shunt circuit and relay R5 opens it. yRelay contacts RSA are timed to close before contacts R5| open.

Relay coils RI, RI bein-g first energized, it will be seen that contacts RI 'B (Fig. lb) will open to break the stick circuit line H2. It should be pointed out that each of the relays IDI- m4, 20L-204, 30h-304 consists of a pickup winding "P" and a holding winding H" with related hold contacts which are connected to thev stick circuit linelll When relay coil Ri' energizes, it will open its contacts RVB (Fig. 1b) breaking the stick circuit H2; it being noted that such` circuit extends through relay contacts RI2A3 now in position shown, through relay contacts RIB to the posiorder of the B section.

tive line |00. Opening of this stick circuit will deenergize the previously energized relays |0|,

|04 if there had been a previous digit rcpresentation, but in the rst digit entry it has no effect. Contacts RIA also close so that the circuit to the KC relay contacts is closed to energize the relays |0I, |04 singly or in combination according to the key depressed. Shortly after such relay contacts RI'A close and RIB open, relay contacts R213 close, and being in shunt with relay contacts RI 'B now open, will connect the stick circuit lli! to the positive line |00, thus retaining thc relays |0I-|04 energized, and in the assumed ilrst digit entry of 6, relays IGI-|03 will be held energized.

From the circuit diagram, it will be noted that provision is made to transfer a digit representation from each order of the A section to the re lated order of the B section. Considering the` units order, the hold relay coils lill-|02 of the A section energize to close related contacts IDI- l to |04-i (Fig. lb) which upon closure energizi-r the related coils IDS-408 of the units order of the B section. Coils |-204 of the tens order oi the A section close related l contacts to ener gize relay coils 205-20a of the tens order of thc B section, and in a similar manner for the hundreds order.

In the example assumed, relay coils I0|, |03

closed contacts Mil-I and |03-I to energize the pickup windings of relay coils |05, |01, respectively.

'I'he closure of relay contacts R2A energizes relay coils R3, R3 with several effects by the latter. It will be noted that the stick circuit for the holding windings of relay coils |05, IDB-300, 308 is through the related stick contacts back through a stick circuit line H4, through relay contacts RIZ-9 in the position shown, through relay contacts RSB which are connected to a line H5 leading to the positive line |08. This will clear out any previous entry in the units order of section B.

At the same time relay contacts RS'B open, re-

y lay contacts RBAU (Fig. 1a) close to close the pickup circuits to relay coils IBS- |03 through the previously closed relay contacts I0|| IIN-l, the circuit extending from the positive line |08, line l5, relay contacts RBAU, relay contacts R12-8 in the position shown, the closed contacts |0||, |03| in the example assumed. the pickup windings of relay coils |05, |01, and by a line I|6 to the negative line |01.

The concurrent opening of conta-cts R3'A (Fig. 1b) will open the pickup circuits to the A sec-s tion so that no further entries can take place in the A section, and thus inisoperations cannot om cur in this respect.

Upon closure of contacts RSA (Fig. la), relay R4 is energized which closes its contacts RHA tn energize the relay R5. The function of relay R4 is to give a time delay for the energization of relay R5. The latter, afterthis suitable time delay, closes its Contacts RAU (Fig. 1(1) While contacts R3'B are open, to thus provide a. holding circuit for the energizedrelays of the units In the same manner re lay contacts REB (Fig. lb, top) close to maintain aholdng circuit for the relays of the B section following the entry of the new digit.

` Relays RI through to R5 are now energized and remain energized as long as any key is held depressed.

When relay RI energized, the related contacts RIB (Fig. 1a) opened to deenerglze relay R6 istered, the depression of the key ||l| would energize the sequencerelays RI, RI', R2, R2', R3, R3', R4 and Ri in the manner now described. The 6 would be cleared out of the units order of the A section and for the 0 entry no relay lOl-|04 would be energized. The 6 would be transferred from the unitsorder of the B section to the tens order of the A section and then back to the tens order of the B, as described. The 0 representation in the units order of the A section would not energize any relays in the units order of the A section. As will be evident later on. this order will be recorded as 0, even though no relays are energized in this order. The next 3 digit is entered in the manner previously described, so that at the end of the entry, G03 will be represented in the A section.

Obviously, if the number was 60, or G90, the zeros need not be registered because in orders following a significant digit the 0 will bc automatically recorded, and the normal O representation for the A section eliminates the necessity ci' zero key strokes for numbers like the above. When the arrangement is such that to effect a zero recording, relays must he energized, the 0 key strokes will be necessary for numbers like the above, as wel] as when they occupy intermediate positons as 603` 206, etc.

While the machine so far described is coinplete and operative, it is desirable to record dato. V

in more than one field, and to this end provision has been made for entry of amounts in two sets of storage devices for recording in two fields. That is, the first field consists of three columns with three orders of relay storage devices into which an amount from one to three orders may be entered. After this entry a manually operated bar is depressed which will correlate the relay storage devices of the other field with thc keys. Preferably, these relay storage devices may receive an entry up to five orders to reccivc` an amount up to that capacity, but this capacity is not fixed and may be varied like the relay storage devices associated With the first field.

To cause entry in the second set of storage devices, a bar (Fig. la) is depressed` Referring to Fig. lbhthe relay storage devices of the A section for the second field consists of the sets lill-404 to Bol-804, although only three of the five sets are shown. Similarly, for the B section only the sets 405-408, 1B5-18, 80E- 808 of the f'lve sets are shown.

Reference numeral |23 (Fig. lb) is the pickup transfer circuit line for the second field correspending to the picklup transfer circuit line ||3 for the first eld, and |22 represents the transier stick circuit line for the relay storage devices of the A section for the second field, corresponding to the previously mentioned transfer stick circuit line H2.

When bar |2|I (Fig. 1a) is depressed, contacts |25 are closed to energize relay RH which closes its RII- 2' contacts to energize relay coil RI2. The Ilatter closes its contacts R|23 l (Fig. 1b) and thus line |22is'eorrelatd for control by the contacts RIB, RZB, and RSB which function in the same manner previously described. Relay contacts R|22 (Fig. 1b) close to correlate transfer pickup line |23 with the relay contacts RVA, and 'RS'A which function as previously described. The group of relay contacts R|2- 4-:1 (Fig. 1a) nowclose to' connect the KC relay contacts with the relay magnets DI-4M of the units order of the' second lcld through a l Il lil

group of four lines |26. Hence, these relays will be energized upon key depression.

In a similar manner the functional relay contacts RBAU, R3'B and REAU (Fig. la) are associated with the pickup and holding circuits of the relay storage devices of the B section, second iield. The control by relay contacts RSAU is effected by closure of relay contacts RIZ-B, and for relay contacts RTB and BEAU by relay contacts RIZ-9.

It is, of course, necessary to prevent the holding circuit H2 (Fig. 1b) for the relays of the A sectilon, first field, from being opened which would be effected by the transfer of relay contacts RIZ-3, and to this end relay contacts Rl I-S and Rl |4 are provided. Relay RI I energizes before R|2 so, when the blade of contacts RIZ-3 transfer, line ||2 will be continued through relay contacts RII- 3 to the positive line |83, and when the blade of contacts R|23 is at the other contact position, line ||2 is continued through relay contacts Rl I-4. The later release of the bar |20 opens contacts |25 to decncrgize relay RH to open contacts R||`-3 and R||-4, but relay RIZ remains energized after RH deenergizes because of the stick circuit through stick contacts RIZ-i2 (Fig. la). Hence, when RII-3 and R||l| open, line H2 is continued through relay contacts RIZ- ll (Fig. 1b) to the positive line |08. In this manner the relays of the A section, first eld, are held energized for subsequent recording opera tions.

Relay contacts RII-5, RII-B and RIZ-ID (Fig. 1a) function in a similar manner to hold the storage relays of the B section, rst field, energized for subsequent recording operations.

The keys ||l| are successively depressed to set up the relays for the second field in precisely the manner previously explained, setting up the digits in proper denominational order in the B section. After the entry for the second field, bar |28 is again depressed to initiate the punching operations.

During the first depression of bar |20, relay R|2 was energized and held energized indefinitely through its stick contacts RIZ-I2 as stated. The energized relay RIZ shifts to contacts RIZ-I, but before such contacts close relay contacts RII-I have previously opened so that a circuit cannot be closed from the positive line |08, through the contacts |25 closed by the bar |20, closed relay contacts RI relay contacts R|2|, to the pickup Winding of relay R|3 because relay contacts RI are opened. Hence, in the first motor bar depression relay R|3 is not picked up, but the second operation of the bar |20 completes a circuit through relay contacts RIZ-4 because these transferred as a result of the previous bar depression and as a result relay R|3 is now energized. A stick circuit for the relay RIS is provided by its stick contacts R|3A closed by the holding winding of the relai7 Ril.

Punching mechanism Any suitable type of punching mechanism may be provided for amount recording, and other forms o'f recording machines may be utilized but preferably a punching machine of the type shown in the patent to F. Lee et al., No. 1,976,618 is utilized. The punching machine is generally shown in Fig. 4 but in full detail in this patent to which recourse may be had for full information.

The punching machine shown in this patent punches cards according to the Hollerith `system and for this reason the combinational setting of the relays must be translated to a single digit representation. Such forms of translators are well known, and briefly, for the hundreds order, determined by the selective energization of the relays 305-308, related contacts (Fig. 1c) are closed thereby in combination so as to select one of a series of digit lines INI which lead to a series of punch-magnets E0 (see Fig. 4) corresponding to magnets 60 ofthe aforementioned Patent No. 1,976,618. It will be noted that the 2 relay contacts are normally closed to select the zero line I3ll to energize the 0 punch magnet I3I. Hence, whether the relays represent 0 in higher orders, or an intermediateO, this digit will be automatically perforated, and for higher orders without the necessity of zero key strokes.

In the problem assumed 6 was entered in the hundreds order energizing relays 306 and 3M and, by following the circuits made by the closure of the related contacts, the 6 digit line |39 is selected and the 6 punch magnet is energized.

After punching the 6 in the hundreds order, the card carriage spaces to the next column position and 2 will be punched, then 3 for the units column. After punching the rst field, punching is successively eiected forthe second lfield in the same manner, the card carriage being stepped column by column.

The means for successively reading out the translators comprises a column read-outoongisting of a brush ISI, a common conducting strip E32 and contact points ISS engageable by the brush lSI as the card carriage is stepped (see also Fig. e). From the contact points I33 there are Wire connections ld to the related translator unit, although not all are shown. By such an arrangement the translators are read out in succession but an initial impulse is directed to the punch to start its operation, alter which card punching automatically ensues.

The column read-out device is Well known and is fully shown in Fig. 3 of the patent-to G. F. Daly et al., No. 2,0l,'i06 and reference may be had thereto for further details.

The specific circuit forpunch-.ing one column will now be traced. From the line le!! acrcuit extends to contacts IB similar to the Acontacts shown in Fig. 15 of Patent No. 1,976,618 (seeaiso Fig. 4), thence to relay contacts R13-B nowclosed to give the initial impulse, to` the common `strip |32, the brush I3I now in contact Awith. the contact point I33 of the first column, bya wire 1F34 leading to the hundreds order translator, through the closed translator contacts, to the 6 digit line `I3!) leading to the 6 punch magnet ILBI, then to the line H15. As is fully described in the Patent No. 1,976,6i8, the energization of the punch magnet I 3I will select a punch, and then the interposer selecting the punch will close contacts 95 to energize a punch solenoid 4'9which will depress the selected punch. The aforesaid elements 69 and 55 as well as the operation o'i the punch is fully explained and described in the patent above, and shown in Fig. 4.

The carriage then escapes one column bringing the next .column of the card to they punches and the brush IBI will then cause the nextxco'lumn to be punched und-er control ofthe next order translator unit.

Upon completion of punching for `theses cardeld, thecar'ria'ge skips to the isst column as is well known, and thereafter the punched card is ejected and at the same timethe energized relays of the present arrangement are deenergizod by the opening of relay contacts DOA- A and DOA-B (Fig. la) which are opened by the onergization of relay DOA (Fig. lc).

This is preferably effected upon the skipping of the card carriage to the lastcolumnpositon, as is fully described in PatentNo...l,9'76,618 for the'type punching machine coordinated with .the present invention. At this time as stated Yin the patent, a bracket |52 movable with `the .card carriage strikes an insulating block ISrto close contacts ISI, the above elements having similar designations in ythe patent. Closure ofcontacts ISI will energize relay DOA to open .contacts DOA-A and DOA--B to release the holding circuits for all energized storage relays which are then brought to a normal deenergized condition preparatory for a new setup operation.

The holding circuit for relay RI3 is through relay contacts RSA which is broken only by the opening of DOA- A, DOA-B contacts at the termination of punching operations. Hence, since relay RIS is energized during punching operations, relay contacts RISC (Fig. la) will be closed, and if any attempt is made to depressv any oi" the keys lill during the punching operation, a circuit will be closed from `the positive line i138, bail contact H33, the line I IG, relay contacts RISC, buzzer B, to negative line Il. The signal given by the buzzer B will warn the operator of the incorrect operation. The ejection of the card in the punching machine Iwill be a' visual indication to the operator toinitiate the next setup.

While there has beenshovvny and describedV and pointed out the iundamentalfnovel features of the invention as applied to -a single modification, it will be understoodthat various omissions and substitutions and changes inthe form and details of the device illustrated-and in its operation may be made by those skilled in the art without departing from the spirit of theli-nvention. It is the intention therefore to be limited only as indicated by thescope of the following claims.

What is claimed is:

l. In a digit set up system, thecombination of `a tenkey keyboard, a set ofstoragedevices, means `controlledbfy, saldkeyboard to .invariably rset up therst digit in an initial order ofthe storage devices, arrdmeans-efiective upon. set up of the next vdigit Vin the initial order of the storage ydevices to transfer the :set up :of the rstdigit on the initial .order of .the storage devicesvtowa `successive.higherorder of the storage devices,

whereby the digits .set up in the :initial .orderiand successive order of `the storage devices are represented Vin correct denominational-onder upon the second digit. entry.

2. In a. digit set up system, the' combinaticnof aten key keyboardfaset of storage devices, means controlieid by. said keyboard: to invariably `set up the'rst .digit `in the vunits ordern-ofthe storageA devices, and means :renderedfoperativezby said keyboard in eiiectingf the` second digit set up in the units order of the storagedevices to transfer the set up from the `units order'to the next higher denominational orden-whereby the second digit entry is always effected in they unltsacrder.

3. In a digitset up system,1the combination of a first group of storage.devioes'fwhtcharenset up in one or more denominaticmainrders td represtorage devices to transfer the digit representations from the first group of storage devices to the second group of storage devices in successive higher orders thereof.

4. In a digit representing system, the combination of a first group of storage devices in which each digit is set up in an initial order thereof and successively transferred to one or more denominational orders of said storage devices, a second group of storage devices, means under control of the first group oi storage devices to transfer the digit representations from the iirst group of storage devices to the second group of storage devices in successive higher orders thereof, and means fcr setting up a digit in an initial order of the first group of storage devices and for causing an operation of said transfer means.

5. In a digit representing system, the combination of a group of storage devices of successive different denominational order, means for setting up a digitJ in an initial order of said storage devices, and means responsive to the set up of the next digit in the initial order by the repeated operation of said setting means for clearingr out the initial order to enable the set up of the next digit and under control of the storage devices of the initial order, when it represents the first set up digit, for causing the next higher order of the storage devices to be set up to represent the first digit.

6. In a digit representing system, the combination of a group of storage devices of successive denominational order, means comprising a ten key keyboard, for setting up said storage devices to represent a digit in the storage devices yin the initial order thereof, and means responsive to the entry of a next digit in the initial order by the repeated operation of the keyboard for clearing out the initial order to enable such order to represent the next digit and under control of the setup storage devices of the initial order, when it represents the rst set up digit, for causing the successive order of the storage devices to be set up to represent this next digit.

'7. In a digit representing system, the combination of a group of storage devices of succes.- sive denominational order, means comprising ten digit keys for setting up said storage devices to represent the lirst digit, and means rendered effective by the repeated operation of said digit keys for causing the storage devices representing the first digit to elect the transfer of the digit representation thereon to the successive higher order of the storage devices and then be cleared of its digit flrst representation, whereby said cleared out storage devices can be set up for the second digit representation.

il. In a digit representing system, the combination of a group of storage devices of succes sive denominational order, means for invariably setting up the initial order of said storage devices to represent the first and thereafter successively entered digits, and means responsive to each repeated operation of said setting means for causing the initial order of said storage devices representing the first digit to effect the transfer of the digit representation thereon to another order of the storage devices and then be cleared of its digit representation, whereby said cleared out initial order of said storage devices successively receives the second and each successive digit representation.

9. In a digit representing system. the combination of a group of storage devices of successive denominational order, means for setting up said storage devices in the cleared out first order thereof to represent the initial digit and each successive digit, other orders thereof successively representing cleared out digits set up in the initial order, means for resetting said storage devices to clear them of their digit representations, and means responsive to the repeated op* eration of the setting means to set up a successive digit in the initial order to effect the transfer oi the digit representations in all or ders of the storage devices under control thereof to successive higher orders of the storage devices, and for causing the operation of the resetting means Whereby said cleared out initial order receives the successive digit representation and the other orders represent the cleared out digits set up in the initial order.

10. In a digit representing system, the combi nation of a group of storage relays of successive denominational order, means for energizing scid storage relays in the initial order thereof to represent the first and successive digits, said other orders being held energized lor succes sively representing digits set up in said initial order. means for deenergizing said storage re lays to clear them oi their digit representations. and means responsive to the repeated operation of the setting means to set up a successive digit to effect the transfer of the digit representations in all orders of the storage relays under control thereof to successive higher orders of the storage relays, and for causing the operation oi the deenergizing means whereby said cleared out ini tial order is energized to receive the successividigit representation and the other orders are energized to represent the digiissuccessively sei. up in the initial order.

l1. In a digit representing system, the combnation of a first group of digit storage devices which are sst up to represent one or more digits of different denominational order, a second group of digit storage devices, and means for transferring under control of the rst group of digit storage devices the digit representations from the first group of digit storage devices to the second group and then under control of the sec-- ond group of storage devices back to the first group of storage devices but in successively higher denominational orders thereof.

12. In a digit representing system, the ccmbination of a first group of digit storage devices which are set up to represent one or more digits of different denominational order, a second group of storage devices, means to transfer the setting of the digit representations from the first group of storage devices to the second group oi storage devices and clearing the first group of storage devices of all digit representations, means to transfer under control of said second group of storage devices the digit settings there- 0f to transfer the digit representations thereon back to the cleared out first group of storage devices but in successive higher orders, leaving the initial order of the first group of storage devices clear of a digit representation, and means to invariably set up a successive digit representation in said initial o-rder of the rst group of storage devices.

13. In a digit representing system, the combination of two groups of denominationally ordered storage devices, means for setting up an initial order of the storage devices in the first group thereof to represent a digit and for setting up under control thereof an initial order of storage devices of the second group, means under control of the storage devices of the second group to set up storage devices of the rst group in successive higher orders if the storage devices of the second group have been set up to represent other digits of the amount, and means under control of the first group of storage devices to set up storage devices in the second group to represent transferred digits in like orders, whereby after the transfer said second set or' storage devices represents the digits of an amount in proper denominational order.

14. In a digit representing system, the combination of a ten key keyboard, a group of digit storage devices, means controlled by said keyboard for setting up said storage devices in an initial order to represent a digit and for retaining the setting, a second group of storage devices, means under control of the storage olevices of initial order of the first named group to set up the storage devices of the initial order of the second group, and for retaining the setting, means responsive to a second operation of said key for initially clearing out the initial order of the nrst group of storage devices and to cause said second entered digit to be set up therein, and means for transferring the ilrst digit representation from the initial order of the second group of storage devices to a successive higher order thereof, and for clearing out the first digit representation, whereby said initial order of the second group of storage devices is set under control of the initial order of the first group of storage devices to represent the second entered digit.

l5. In a digit representing system, the combination of a ten key keyboard, two groups of denominationally ordered storage devices, one group of which may have previously been set up to represent digits of an amount previously entered, means for causing under control of the previously set up storage devices the setting up of the digits thereon upon said other group of storage devices in successive higher orders and clearing the previously set up storage devices, and means under control of said other group of storage devices to cause the setting up of the cleared out storage devices in like denominational order, whereby one order of such storage devices remains clear to be set up to represent a successive digit representation under control of said ten key keyboard.

16. In a digit representing system, the combination of a ten key keyboard, two groups of denominationally ordered storage devices, one group of which may have previously been set up to represent digits of an amount previously entered, moans for causing under control of the previously setup storage devices the setting up of the digits thereon upon said other group of storage devices in successive higher orders and clearing the previously setup storage devices, means under control of said other group of storage devices to cause the setting up of the cleared out storage devices in like denominational order. whereby one order of such storage devices remains clear to be set up to represent a successive digit representation under control of said ten key keyboard, and means for causing said other group of devices to be cleared out for another transferred digit setting.

17. In a digit representing system, the comblnation of a first group of digit storage devices which have been previously set up to represent one or more digits of dierent denominational order in correct denominational position, a second group of storage devices, means to transfer the digit representations from the rst group to the second group of storage devices and clearing the first group of storage devices of al1 digit representations, means to transfer under control of said second group of storage devices the transferred digits back to the cleared out iirst group of storage devices shifted to successive higher orders and clearing the second group of storage devices, said transfer shift leaving the first order of the first group of storage devices still clear of any digit representation, and means to cause a successive digit set up in the cleared out order of the first group of storage devices prior to the next transfer from the first to the second group of storage devices.

18. In a digit set up system, the combination of a ten key keyboard, a plurality of sets of storage devices for representing digits of successive denominational order, means controlled by said keyboard for invariably setting up an initial order of each set of storage devices to represent each digit, means controlled by said keyboard for causing the previous setup ln each of the storage devices to be transferred to successive denominational orders of the same storage device upon set up of a digit in the initial order thereof, to thereby set up an amount on each storage device in correct denominational position, and selective means effective after setting up a plurality of digit representations in one set of storage devices to coordinate the means controlled by the keyboard for operative control of the other set of storage devices to set up the initial order thereof and to cause the transfer means to be effective for the other set of storage devices, whereby the latter is also set up to represent the entered digits of another amount in correct denominational position.

19. In a digit setup system, the combination of a ten key keyboard, a plurality of sets of storage devices for representing amounts of successive denominational order, means controlled by said keyboard for invariably setting up an initial order of each set of storage devices to represent each digit, means controlled by said keyboard for causing the previous setup in each of the storage devices to be transferred to successive denoniinational orders of the same storage device upon set up of a digit in the initial order thereof, to thereby set up an amount on each storage device in correct denominational position, selective means effective on its first operation after setting up a plurality of digit representations in one set of storage devices to coordinate the means controlled by the keyboard for operative control of the other set of storage devices to set up the initial order thereof and to cause the transfer means to be effective for the other set of storage devices, whereby the latter is also set up to represent the digits of another amount in correct denominational position, a recording mechanism, means for effecting the operation of the recording mechanism under control of the sets of storage devices, and means whereby the second operation of said selective means initiates the operation of the recording mechanism to cause the latter to record the amounts set up on the sets of storage devices.

CLAIR D. LAKE. FRANCIS E. HAMILTON.