US2684199A - Counting or number registering mechanism - Google Patents

Counting or number registering mechanism Download PDF

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Publication number
US2684199A
US2684199A US212637A US21263751A US2684199A US 2684199 A US2684199 A US 2684199A US 212637 A US212637 A US 212637A US 21263751 A US21263751 A US 21263751A US 2684199 A US2684199 A US 2684199A
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wheel
contact
contacts
hand side
wheels
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US212637A
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English (en)
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Remmer W Starreveld
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WILLEM HENDRIK THEODORUS HELMI
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WILLEM HENDRIK THEODORUS HELMI
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G06F11/1012—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error
    • G06F11/104—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error using arithmetic codes, i.e. codes which are preserved during operation, e.g. modulo 9 or 11 check
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/10—Payment architectures specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/14—Payment architectures specially adapted for billing systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/305—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wired telephone networks
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/02—Banking, e.g. interest calculation or account maintenance

Definitions

  • the invention relates to aA counting or number registering mechanism, and in particular to a counting mechanism or a similar device, comprising normally juxtaposed figure wheels (npartite for a numerical system based on powers of n), each intendedv for one of the positions to be occupied by a digit,. andV generally coupled by means for carrying the multiples of n.
  • counting mechanisms for the decimal system will be considered, although the invention may also be used for other numerical systems after having been adapted thereto.
  • the ll-function is equal to the sum oithe digits appearing in the odd positions, diminished by the sum of the digits ap pearing in the even positions and further decreased or increased, if necessary, by a multiple of ll so as to leave a ⁇ positive number less than 11.
  • the above-mentioned checking methods are based on a more general rule, to the effect that, if numbers are subjected to an arithmetical operation and if the remainders obtained on divisionof'these numbers by a certain key'number S (i. e. the S-functions are' subjected to the ⁇ same operation, the S-function of' the result will correspond with the S-function of the result of the operation applied to the S-functions of thenumbers.
  • the S-function oi ⁇ a number isunderstood' to be equalI to the difference between the number and the ⁇ next smaller multiple of? the selected" ⁇ key number S.
  • casting outA the nines brings to light 8.0i any 9 arbitrary errors; not however the transpositions of directly adjacent iigures' which.l are frequently occurring in practice, nor any other errors resulting in a difference divisible by 9.
  • Casting out the elevens reveals. 1) of any 1.1 arbitrary errcrsg' not hown ever equal errors in directly adjacent figures or transpositions. between units. and hundreds, tens and thousands, etc., nor any other errors resultingl in a difference divisible by il.
  • a greater certainty maybe obtained by casting out the nines and the elevens in combination, or by making use of one or more other key numbers affording a greater probability of iinding an error. For instance, the numbers 7, 13, 17, 19, 23, 29, etc. may be considered as key numbers.
  • the Sfunction of each number to ⁇ be inserted in the machine could be separately determined, and the counting mechanism could be provided with a special checking wheel (f5-partite for the S-functions).
  • the counting mechanism could be provided with a special checking wheel (f5-partite for the S-functions).
  • the corresponding S-function is struck on the checking wheel or wheels.
  • the said S-functions are treated in the same manner as the numbers inserted in the machine.
  • afdisagreement an error has been made, and it is highly probable that this is an error made in striking the numbers.
  • the desired S-functicn is automatically computed for each number displayed by the mechanism at any time, so that this S-function may be compared with the S-function displayed by the checking wheel in question.
  • the separate checking wheel could be replaced by another device, on which or by means of which the S-function of the result of the operation applied to the S-unctions oi the various numbers is registered.
  • the S-function of the result appearing in the normal counting mechanism is automatically computed.
  • the invention provides a comparing device automatically signalising a disagreement between the position of the checking wheel as mentioned hereinbefcre, and the result obtained by the said calculating device.
  • the comparing device may cause the mechanism to be locked, or ⁇ its driving to be interrupted.
  • the said calculating device will be an electric one, but mechanical calculating devices are also conceivable and practicable for this purpose.
  • Fig. 1 is a somewhat schematic plan view of a simple calculating machine.
  • Figs. 2-10 are schematic cross sections of the counting mechanism of the machine shown in Fig. l, which is provided with electric auxiliaries embodying the present invention.
  • Fig. 2 shows a plate carrying a plurality of contact brushes or ieelers, arranged at the left of the counting mechanism, as viewed from the left.
  • Fig. 3 comprises, at the left, a front view of the left-hand side of the first iigure wheel from the left, and at the right, a projection of the right-hand side of the same iigure Wheel. Both sides of the figure wheel are provided with contacts and with conductors interconnecting these contacts: the left-hand side cooperates with the brushes shown in Fig. 2, and the right-hand side with the brushes shown in Fig. 4.
  • Fig. 4 shows a feeler plate arranged between two successive figure wheels; a front view of the left-hand side is shown at the bottom, and a projection of the right-hand side at the top.
  • Fig. 5 comprises a front View of the left-hand side and a projection of the right-hand side of a normal figure wheel.
  • Fig. 6 shows a feeler plate arranged at the right of the counting mechanism; the right-hand side of this feeler plate, shown at the top in the figure, carries a plurality of brushes cooperating with a checking wheel for the 9-function, which is represented in Fig. '7.
  • Fig comprises a front View of the left-hand side and a projection of the right-hand side of the said checking wheel for the Q-unction.
  • Fig. 8 comprises a front View of the left-hand side and a projection of the right-hand side of a feeler plate arranged at the right of the wheel shown in Fig. 7.
  • Fig. 9 comprises a front view of the left-hand side and a projection of the right-hand side of a i checking wheel for the ll-function, arranged at the right of the reeler plate shown in Fig. 8.
  • Fig. l0 is a front view of the left-hand side of a feeler plate arranged at the right of the checking wheel shown in Fig. 9.
  • the counting mechanism shown in Fig. 1 is enclosed by a casing I2, provided with a slot I3, through which one figure of each of the figure wheels lil-IM is visible.
  • the counting mechanism is shown in its zero position, wherein all gure wheels display a zero before the slot I3.
  • a key board, comprising 7 10 keys, indicated at Iii, serves for selecting numbers to be supplied to the counting mechanism.
  • the apparatus further comprises a row of nine signal lamps 2e and a row o1" eleven signal lamps 2i.
  • the S-function and the ll-function of each number displayed by the slot I3 are automatically computed, but not visibly shown. However, ii these functions do not correspond with the gures shown at the Windows I6 and Il, a lamp indicating the diiierence is lighted in row 26 and/or in row 2I. As long as the lamps 0 are lighted in both rows, there is no difference, i. e. no error occurs.
  • Fig. 2 shows a disc 25, bearing a plurality of brushes 26 divided over radii indicated at 0, I, II IX. Moreover, a brush 21 is more inwardly arranged on the O-radius, and a brush 23 is arranged outside the circle of the brushes 2S. All these brushes are stationary.
  • Brush 27 is connected with the current supply 29, whichis controlled by a switch 3i?.
  • the ten brushes 28 and the brush 28 are each connected with a signal lamp 2I (cf. Fig. l), these lamps being grounded at 3
  • Brushes 26, 21 and 28 cooperate with contact members on the left-hand side of the rst gure wheel 141 as shown in Fig. 3.
  • Brushes 25 cooperate with ccntact segments 32 arranged in a circle
  • brush 28 cooperates with a contact ring 33
  • brush 2'I either with contact ring 34, or with a contact segment 35 placed in an interruption of ring 34.
  • Contact members are also provided on the right-hand side of gure wheel III1 as shown in Fig. 3 at the right.
  • These contact members are contact rings formed in such manner that each ring extends over part of its circumference in one circle, and over the remainder of its circumference in another circle, so that two different contact rings lie in each complete circle.
  • Nine of these Contact rings are provided and shown at 43 in the drawing. They are connected by means of electric conductors 4I with the contact segments 32 on the left-hand side of the -lwe figure wheel
  • the innermost contact ⁇ ring 3.4 on the lefthand side is connected with a contact segment 46:1ying. on the G-.radius outside Athe contact rings 40 on-the right-'hand .side ofthe vfigure wheel.
  • ),'shown inFig. 4, ispfacing the right-hand side of the figure .wheel
  • 41, is provided Withaplurality'of brushes divided over ten radii, indicated at 0, II IX.
  • a brush 53 cooperates with the innermost contact ring 43 in Fig. 3.
  • the other side of disc is likewise provided with stationary contact brushes.
  • on the left-handside is electrically connected with a brush 55 arranged on the O-radius on the right-hand side.
  • brushes 56 are provided, which are connected with the spirally arranged brushes 5
  • the nine brushes 52 on the left-hand side, arranged on the outermost circle, are connected with nine brushes 51 on the right-hand side, which are arranged in a spiral, brushes lying on corresponding radii Vbeing interconnected.
  • a normal gure wheel 60 as shown in Fig. 5 is arranged.
  • a discas shown in Fig. 4 follows; this disc is again followed by a iigure Wheel, and so on, according to the Vnumber of ligure wheels pertaining to the counting mechanism.
  • on the left-'hand side are electrically connected with the Contact segments y62, which are circumferentially spaced with respect to each other on the largest circle of the right-hand side.
  • the left-hand side also comprises a plurality of contact segments 63, which are circumferentially spaced with respect to each other, and which are connected With the contact rings -
  • the outermost uninterrupted contact ring on the left-hand side is connected with the large contact segment l66 on the right-hand side of figure wheel 60.
  • a disc 10 is provided, of whichV the left-hand and right-hand sides are showninFig. 6.
  • Theleft-hand side . is provided Withfa plurality vof ⁇ contact brushes cooperating with .the right-:hand .side ⁇ of figure .wheel ..60
  • the brush 53 1 lli (Fig. 5), y-to wit a'brush 1
  • the conductors .13 'in :Fig 6 are continuedby the conductors i3 in Fig. .8.
  • the disc v'I0 further comprises nine .contact brushes 1.4,. arrangedzin-alarge circle and :divided over nine of the ten radii. These contactbrushes are connected through conductors Vi5 with nine Contact brushes 'I6 von the right-hand side .of disc 10,'which aredivided over nine v'concentric circles.
  • the above-mentioned disc is arranged.
  • the left-hand side of this disc is provided with nine contact brushes, each connected with one of the nine signal lamps 20, the remaining terminals of these lampsbeing grounded at 9
  • the right-hand side of disc 90 carries eleven contact brushes divided ⁇ along .-a large circle, and connected through conductors '.'3 with the contact brushes 1
  • the ll-wheel I1 shown in Fig. 9 is facing the right-hand side of the contact disc 9
  • a single contact brush 93 is arranged on an end wall S4 of casing
  • Contact ⁇ brush .93 is connected with the mains through a switch S5.
  • a current flows through switch 95 in Fig. 10 to brush 93, and thence to contact ring 92 on the right-hand side of the l'l-wheel shown in Fig. 9. From this ring, the current flows to contact segment 9
  • the counting mechanism comprises only two wheels, to wit the lirst ligure wheel from the left
  • the left figure wheel displays the figure 1 and the other ligure wheel the ligure 2, so that the g-function is equal to 3.
  • the left ligure wheel displays the ligure 1 and the other ligure wheel the ligure 2, so that, for instance, the number 102 is displayed by the counting mechanism.
  • the 11-function of this number is equal to 3.
  • the circuit for the ll-function is as follows:
  • the current flows from switch in Fig. l0 to contact brush 93, and thence through contact ring 92 in Fig. 9 to contact segment 9
  • This contact segment has been rotated over two steps, so that it occupies the position of the B-radius, and the current is taken ⁇ up by the contact brush shown at the top in Fig. 4 on the Z-radius on the second circle from the outside. Thence, the current flows to the contact brush shown at the bottom in Fig. 4 on the 2-radius on the third circle from the outside.
  • the current reaches brush 5
  • This segment has been displaced over one step, so that the current is taken up by the contact brush on the III-radius in Fig. 2, and flows through the 3-lamp as required.
  • occupies the position of the 8-radius, so that the current is taken up by the contact brush on the S-radius at the top in Fig. 8, and flows through conductor 8 to contact brush 12- on the S-radius in Fig. d on the fourth circle from tie outside; transfers the current to the segment 5E at the right in Fig. 5 in the position of the l-radius (the iigure wheel has been rotated over two positions) and thence the current iiows to contact ring 65 on the Z-radius at the left in Fig. 5, which occupies the position of the O-radius.
  • the current flows to contact brush 55 on the O-radius at the top in Fig. 4 on the innermost circle, so as to reach contact brush 5I onthe O-radius on the second circle from the inside at the bottom of Fig. 4.
  • the current flows to the next figure wheel, which occupies its zero position, so that reaches the secc-nd contact ring from the inside.
  • the current ilows through a contact segment 63 on the 9-radius .and brush 56 on the I-radius at the top in Fig. d to the contact brush 5I on the '-radius at the bottom in Fig. 4, and thence to the contact segment on the second circle from the outside.
  • the current flows to the second contact ring from the outside at the right in Fig. 3, which occupies the position of the O-radius (the figure wheel 41 has been rotated over one posiw tion), and thence to segment 32 on the l-radius at the left in Fig. 3, which occupies the position of the O-radius.
  • the current is taken up by the brush on the O-radius in Fig. 2, so 'that the O-lamp 2D is lighted. As long .as the O-lamp is lighted, no errors have been made.
  • a counting mechanism comprising a plurality oi" figure wheels each having n different positions, means for displacing the said gure wheels each over a number of steps corresponding with one of the digits of a number to ⁇ be inserted in saidcounting mechanism, and an electric computing device receiving the setting of the said figure wheels and computing therefrom a check symbol indicating the remainder obtained on division by a key number S different from n of the number registered in the said gure wheels, wherein the said computing device comprises a plurality of sets of n electric contacts each xedly coupled with one of the said figure wheels so as to be rotated.
  • a counting mechanism comprising a plurality of iigure wheels each having n different positions, means for displacing the said figure wheels each over a number oi steps corresponding with one of the digits of a number to be inserted in said counting mechanism, and an electric computing device receiving the setting oi the said figure wheels and computing therefrom a check symbol indicating the remainder obtained on division by a key number S different from n of the number registered in the said gure wheels, wherein the said computing device comprises a plurality of rotatory sets of n radially spaced electric contacts each ixedly coupled with one of the said figure wheels so as to be rotated upon rotation oi the associated iigure wheel, a plurality of rotatory sets of n circumferentially spaced electric contacts each iixedly coupled.
  • a counting machine comprising a plurality of gure wheels each having n different portions, means for displacing the said iigure wheels each over a number of steps corresponding with one of the digits of a number to be inserted in said counting mechanism, and an electric computing device receiving the setting of the said iigure wheels and computing therefrom a check symbol indicating the remainder obtained on division by a key number S different from n of the number registered in the said iigure Wheels, wherein the said computing device comprises a plurality of sets of n radially spaced contacts each arranged on one of the said figure wheels, a plurality of sets of 1L circumferentially spaced contacts each arranged on one of the said figure wheels, connections between the radially spaced contacts and the circumferentially spaced contacts on each of the said :ligure wheels, a plurality of sets of S radially spaced fixed contacts each cooperating with one of the said irstmentioned sets of radially spaced contacts, a
  • a counting mechanism comprising a plurality of ligure wheels each having n different positions, means for displacing the said figure wheels each over a number of steps corresponding with one of the digits of a number to be inserted in said counting machine, and an electric computing device receiving the setting of the said ngure wheels and computing therefrom a check symbol indicating the remainder obtained on division by a key member S different from n of the numb-er registered in the said ngure Wheels, wherein the said computing device comprises a plurality of rotatory contact members, each coupled with one of the said ligure wheels, each adapted to be set in n dilerent positions according to the position of the associated iigure wheel, and each comprising n radially spaced annular contacts each extending through part of a circle, n circumferentially spaced contacts, and means electrically connecting the said radially spaced contacts each with one of the said circumferentially spaced contacts, a plurality of sets of S ⁇ radially spaced stationary contact brushes each
  • a counting mechanism as claimed in claim 9, further comprising a checking wheel having S different positions, and means for displacing said checking wheel over a number of positions corresponding with the value of a check symbol accompanying a number to be inserted in said counting mechanism
  • the said computing device further comprises a rotatory contact member coupled with said checking wheel, adapted to be set in S different positions according to the position of said checking wheel, and comprising S radially spaced annular contacts, S circumferentially spaced contacts, and means electrically connecting the said radially spaced contacts each with one of the said circumferentially spaced contacts, a set of S radially spaced stationary contact brushes cooperating with the said radially spaced contacts, a set of S circumferentially spaced stationary contact brushes cooperating with the said circumferentially spacedv contacts, means electrically connecting the contact brushes of one of the saidsets each with one of the contact brushes of one of the sets associated with the adjoining iigure wheel, indicating means for signalizing any disagree ment between the setting o

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US212637A 1950-02-28 1951-02-24 Counting or number registering mechanism Expired - Lifetime US2684199A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL2684199X 1950-02-28
NL693250X 1950-03-10
FR309840X 1951-02-13
CH301967T 1951-02-22
FR2684201X 1951-02-26

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US2684199A true US2684199A (en) 1954-07-20

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Application Number Title Priority Date Filing Date
US212637A Expired - Lifetime US2684199A (en) 1950-02-28 1951-02-24 Counting or number registering mechanism
US214177A Expired - Lifetime US2722378A (en) 1950-02-28 1951-03-06 Means for determining check symbols for symbol groups
US224566A Expired - Lifetime US2684200A (en) 1950-02-28 1951-05-04 Device for determining check symbols for symbol groups
US224864A Expired - Lifetime US2684201A (en) 1950-02-28 1951-05-07 Device for determining check symbols of symbol groups

Family Applications After (3)

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US214177A Expired - Lifetime US2722378A (en) 1950-02-28 1951-03-06 Means for determining check symbols for symbol groups
US224566A Expired - Lifetime US2684200A (en) 1950-02-28 1951-05-04 Device for determining check symbols for symbol groups
US224864A Expired - Lifetime US2684201A (en) 1950-02-28 1951-05-07 Device for determining check symbols of symbol groups

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US (4) US2684199A (en, 2012)
BE (3) BE501525A (en, 2012)
CH (2) CH312535A (en, 2012)
DE (3) DE911270C (en, 2012)
FR (4) FR1041616A (en, 2012)
GB (5) GB698748A (en, 2012)
IT (1) IT391844A (en, 2012)
NL (5) NL75222C (en, 2012)

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US2731199A (en) * 1951-10-06 1956-01-17 Ibm Computing mechanisms for checking computations
US2826359A (en) * 1954-10-27 1958-03-11 Ibm Checking circuit
US2837278A (en) * 1954-11-23 1958-06-03 Ibm Checking circuit
US2886240A (en) * 1954-04-02 1959-05-12 Int Standard Electric Corp Check symbol apparatus
US2943787A (en) * 1953-05-20 1960-07-05 Int Computers & Tabulators Ltd Data checking apparatus
US2970764A (en) * 1954-06-04 1961-02-07 Ibm Checking circuit
US3022950A (en) * 1955-10-21 1962-02-27 Dirks Gerhard Electronic computing means
US3040985A (en) * 1957-12-02 1962-06-26 Ncr Co Information number and control system
US3190551A (en) * 1965-06-22 Decimal parity digit apparatus
US3778766A (en) * 1971-12-29 1973-12-11 Texaco Inc Check digit calculator
US4328746A (en) * 1978-01-24 1982-05-11 Interface Systems, Inc. Weighted modulus numbering apparatus

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US2950048A (en) * 1960-08-23 Computer for verifying numbers
GB801295A (en) * 1955-05-10 1958-09-10 Theodorus Reumerman Improvements in the transmission of intelligence
NL207987A (en, 2012) * 1955-06-13
DE1047490B (de) * 1955-10-21 1958-12-24 Dr Gerhard Dirks Elektronische Zaehlanlage
GB848326A (en) * 1956-02-02 1960-09-14 Int Computers & Tabulators Ltd Improvements in or relating to information checking apparatus
NL215945A (en, 2012) * 1956-04-02
GB848542A (en) * 1956-04-11 1960-09-21 Theodorus Reumerman Improvements in or relating to devices for determining check symbols for symbol groups and/or for checking symbol groups already provided with check symbols
DE1056860B (de) * 1956-04-19 1959-05-06 Dr Gerhard Dirks Verfahren zum Pruefen der richtigen Verarbeitung von Zahlen in elektronischen datenverarbeitenden Maschinen
US2993956A (en) * 1957-08-09 1961-07-25 Western Union Telegraph Co Error detecting system for telegraph transmission
US3183482A (en) * 1958-07-03 1965-05-11 Sperry Rand Corp Check digit verifiers
US3431406A (en) * 1958-07-03 1969-03-04 Sperry Rand Corp Check digit verifiers
US3141968A (en) * 1958-12-18 1964-07-21 Atomic Power Dev Ass Inc Analog computer
US3033450A (en) * 1959-12-18 1962-05-08 Pure Oil Co Check digit computing apparatus
NL255870A (en, 2012) * 1960-09-14 1964-03-25
DE1195523B (de) * 1961-05-03 1965-06-24 Siemag Feinmech Werke Gmbh Verfahren und Vorrichtung zur Fehlerermittlung in von Datenverarbeitungsmaschinen, insbesondere Schreibbuchungsmaschinen, zusammengestellten und/oder ausgewerteten Zeichengruppen durch Errechnung eines Pruefzeichens
US3191009A (en) * 1961-08-17 1965-06-22 Sperry Rand Corp Check digit verifiers
US3166243A (en) * 1961-12-22 1965-01-19 Rca Corp Check number computing and printing apparatus
US3448254A (en) * 1965-07-28 1969-06-03 Anker Werke Ag Data checking system
US3386653A (en) * 1965-12-17 1968-06-04 Ncr Co Check number evaluating device
DE1282336B (de) * 1967-04-22 1968-11-07 Orgaflex Bueromaschinen Ges Mi Schaltungsanordnung zum Errechnen eines Pruefzeichens
US3508707A (en) * 1968-01-15 1970-04-28 Ibm Check digit verifier
FR2235420A1 (en) * 1973-06-29 1975-01-24 Charpenel Louis Calculating rule for number coding - has rotating part which give code on separate scale; for banking
JPS5463642A (en) 1977-10-31 1979-05-22 Tokyo Keiki Kk Check digit calculator
US4272674A (en) 1977-10-31 1981-06-09 Tokyo Keiki Company Ltd. Check digit calculator

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US2241591A (en) * 1939-05-24 1941-05-13 Western Electric Co Calculating machine

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Publication number Priority date Publication date Assignee Title
US2324957A (en) * 1943-07-20 Calculating device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241591A (en) * 1939-05-24 1941-05-13 Western Electric Co Calculating machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190551A (en) * 1965-06-22 Decimal parity digit apparatus
US2731199A (en) * 1951-10-06 1956-01-17 Ibm Computing mechanisms for checking computations
US2943787A (en) * 1953-05-20 1960-07-05 Int Computers & Tabulators Ltd Data checking apparatus
US2886240A (en) * 1954-04-02 1959-05-12 Int Standard Electric Corp Check symbol apparatus
US2911149A (en) * 1954-04-02 1959-11-03 Int Standard Electric Corp Calculating means
US2970764A (en) * 1954-06-04 1961-02-07 Ibm Checking circuit
US2826359A (en) * 1954-10-27 1958-03-11 Ibm Checking circuit
US2837278A (en) * 1954-11-23 1958-06-03 Ibm Checking circuit
US3022950A (en) * 1955-10-21 1962-02-27 Dirks Gerhard Electronic computing means
US3040985A (en) * 1957-12-02 1962-06-26 Ncr Co Information number and control system
US3778766A (en) * 1971-12-29 1973-12-11 Texaco Inc Check digit calculator
US4328746A (en) * 1978-01-24 1982-05-11 Interface Systems, Inc. Weighted modulus numbering apparatus

Also Published As

Publication number Publication date
NL102040C (en, 2012)
BE501548A (en, 2012)
FR61386E (fr) 1955-04-26
US2684201A (en) 1954-07-20
GB702934A (en) 1954-01-27
US2684200A (en) 1954-07-20
GB698466A (en) 1953-10-14
DE935095C (de) 1955-11-10
BE501525A (en, 2012)
FR61759E (fr) 1955-05-17
BE503085A (en, 2012)
CH309840A (de) 1955-09-15
FR1041616A (fr) 1953-10-26
CH312535A (de) 1955-12-31
IT391844A (en, 2012)
GB693250A (en) 1953-06-24
GB693723A (en) 1953-07-08
NL76684C (en, 2012)
NL80207C (en, 2012)
DE929880C (de) 1955-07-04
US2722378A (en) 1955-11-01
DE911270C (de) 1954-05-13
NL271929A (en, 2012)
FR61756E (fr) 1955-05-17
GB698748A (en) 1953-10-21
NL75222C (en, 2012)

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