US2254933A - Record controlled machine - Google Patents

Record controlled machine Download PDF

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Publication number
US2254933A
US2254933A US214397A US21439738A US2254933A US 2254933 A US2254933 A US 2254933A US 214397 A US214397 A US 214397A US 21439738 A US21439738 A US 21439738A US 2254933 A US2254933 A US 2254933A
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United States
Prior art keywords
control
magnetic
record
records
impressions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US214397A
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English (en)
Inventor
James W Bryce
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
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International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE428205D priority Critical patent/BE428205A/xx
Priority to NL64016D priority patent/NL64016C/xx
Priority claimed from US145031A external-priority patent/US2254931A/en
Priority to CH209242D priority patent/CH209242A/fr
Priority to FR838421D priority patent/FR838421A/fr
Priority to GB15810/38A priority patent/GB515183A/en
Priority to DEI61470D priority patent/DE747009C/de
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US214401A priority patent/US2258106A/en
Priority to US214397A priority patent/US2254933A/en
Publication of US2254933A publication Critical patent/US2254933A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/028—Magnetic recording digest

Definitions

  • This invention relates to accountingl systems, and has for one oi its objects the provision ot a. control system utilizing machine control means comprising plane surfaces capable of receivingv permanent eiIects from an electric action which effects subsequently are translated into electrical energy to control or operate the machine.
  • the present application relates specillcally to a system in which the control elements or records are provided with magnetic conditions representing various characterizations and data, and are adapted to be presented to a machine to convert the magnetic conditions on the control elements into electrical currents or impulses to control the machine in accordance with the magnetic indications.
  • the instant embodiment is shown to comprise well known accounting machine control elements which are controlled or influenced by the magnetic conditions or indications impressed upon the control or elements or records.
  • 'I'he specic type of accounting system described herein comprises a system wherein the machine control elements are controlled at differential times by the electrical energy generated by the control system by sensing the coded or diierentially positioned magnetic conditions disposed under control records.
  • Another object of the present invention is the provision of detecting means whereby the magnetic conditions on the control elements are converted into electrical currents or impulses.
  • the differently positioned magnetic conditions are eiective to create electrical impulses initiated at different A times.
  • Still another object is to provide means whereby the electrical energy generated by the magnetic indications are impressed directly on the control elements of the machine.
  • Still another object resides in the provision of vmeans whereby the electrical energy generated by the magnetic conditions is impressed directly on the accumulating control elements of the machine. l .v
  • Still another object is the provision of means whereby the control elements areeiiective to control the various operations of thev accounting machines in accordance with the disposition of the magnetic conditions thereon without physically engaging the control elements. In accordance with this provision it is unnecessary to physically contact the control elements in any way to perform various machine control functions.
  • Figs. 1A. 1-.B, and l-C show diagrammatically the obliterating, recording, and reading means for detecting magnetic conditions on a record.
  • Fig. 2 shows an amplifier system including magnetic reading means in the input circuit.
  • Fig. 3 shows a detailed view of a control element.
  • the process of magnetically recording data in the form of discrete magnetic conditions or impressions depends essentially on the phenomenon of magnetic hysteresis and on the associated property that when changes of magnetomotive force are made upon a magnetizable substance a certain remanent ux density is retained by the magnetized substance which is termed remanence.
  • the intensity of the resultant field in the magnetizable substance depends precisely on the magnitude of the magnetic fleld acting thereon and the substance of the magnetizable element.
  • the magnetizable substance of the controlrecord for thepresentpuxposes shouldbel sequent period to initiate electrical current conditions or 'impulses which are impressed upon various control circuits to control the operation l of the different machines of the present system.
  • a plurality of such discrete magnetic impressions may be disposed in a number of various 'l identifying areas to represent various characterizations. It is preferred to arrange the different subjected to a constant magnetic field so as to y impress discrete magnetic impressions thereon, v
  • control records may be employed in that state to control selectively the various accounting machines, and that at any subsequent desired period the recordings may be obliterated withoutl impairing the utility of the control records so as to be in a state or condition so that new magnetic influences may be impressed thereon to represent new characterl izations of the desired data.
  • the rst step is to presentthe control record D to a changing magnetic eld created by the magnet A, termed the obliterating magnet. ⁇ It is preferred in the present case to subject all the record elements to the magnetic field of the obliterating magnet before the data is recorded4 the recording magnets, so that a selected magnet,
  • One of the recording magnets Bis shown disposed in close proximity to the record so that a particular identifying area thereof is subjected to the excitation field of the particular recording magnet and thereby impressing uponthe record a discrete magnetic impression.
  • the control record Upon removal of the record D from the constant excitation field created by the recording magnet, the control record will retain a certain remanent magnetizacontrol or magnetizable areas in columnar arrangement so that each column may be conditioned by magnetic. imp differently positioned in the individual columns.
  • the conditioned control record D is-presented to one of the electromagnets C which will be termed a reading iiow of current induced in the magnet is then conducted to the input-circuit of an amplifying system, generally designated at E, and comprises a plurality of Vthermionic device of which two areshown connected in cascade unploying the resistance upling type of which is well known d'need not'be dcribed in fin'ther detail.
  • the work circuit is deurbaned immediately when the sensed magnetic im is positioned awayvfromthe reading magnet. Ingtliis manner, it is possible to convert the discrete,v magn-- suitably adapted to be controlled by the magnetic control records.
  • the principle of the present invention'will be applied to various elements which are standard and used at present' in the known accounting Control records The control records to be described and shown in Figs. 3 to 9 must fulilil certain requirements in order to be adaptable to accounting system processes.
  • the records must comprise suitable magnetizable substances which, when subjected to controlling magnetic fields and removed therefrom, retain suitable remanent iuxes therein which will be effective to create or initiate current impulses when presented to suitable detecting or sensing devices.
  • the magnetizabie material may be incorporated in or form part of the control record in various ways, for example, (1) the said materialmay be in the form of a metallic wafer or strip, or individual wafers or strips; (2) or may be in the form of metal powder or iilings suitably ilxed upon a carrier or base; (3) or a form oi' colloidal metal and sprayed or coated upon a carrier or base as a metallic coating; (4) or a form of coating or layer of material deposited on a carrier by an electrolytic process; (5) or may be in the form of a granular material such as filings and mixed in suitable paper used as a carrier; (6) or a form of ilnely divided metal powder incorporated in the pulp before manufacturing the paper carrier or base.
  • control records so as to be provided with at least one surface to readily receive legible matter such as various characters or marks formed by writing, printing, or typewriting.
  • legible matter such as various characters or marks formed by writing, printing, or typewriting.
  • legible characters may be made upon the surface of the record from time, to time. This makes it possible to delete or strike out any of the printed or written characters as desired or add thereto, particularly in view of the fact that the magnetic influences impressed on the records may be obliterated and substituted by new recordings from time to time. Suflicient space on the surface of the card should be available to receive the additional printed or written recording identifying matter in the event it is desired merely to strike out the irrelevant legible matter.
  • vthe control record D represents, in the present instance, a control element of standard size. that is. similar in size to the records for use with accounting machines of the well known Hollerith type, and comprising magnetizabie material and having a surface capable of receiving legible characterizations.
  • the surface of the control record D in the ii8 ure is shown to be divided into a plurality of individual index point positions.
  • the index point positions need not be indicated as shown in the figure and that the illustration used is merely for descriptive purposes, since it is impossible to show graphically the magnetic iniluen'ces impressed in the' various control areas.
  • each columnar area III is provided along the minor axis of the control record D and that each columnar area is sub-divided into a plurality of code or"index point positions Il, each position representing a certain value or characterization.
  • each columnar area as shown, is divided into ten index point positions, the values of which increase in value from the top to the bottom of the record.
  • the positions are arranged and identiiied similarly as is the customary and well known arrangement of the Hollerith record. It is to the speciilc positions il where the discrete magnetic influences are directed and impressed in accordance with the data desired to be recorded.
  • the magnetic material may be in such a form or state that it will not readily receive writing or printing, and it is obvious that such a surface must be provided so as to enable the identication of the records and interpretation of the data impressed thereon.
  • writing surface is meant to include a surface which will readily take impressions from a pencil, pen, typewriter, hand stamp, printing press, or other kindred instrument.
  • the entire plan surface of the control record is adapted to be capable of receiving such legible impressions, and, as indicated on the record, the legible indications may be arranged at the head of the columns to interpret the code impressions in the corresponding columns.
  • the remaining surface of the record is available and capable of receiving legible impressions, since the magnetic influences impressed on the record in the various positions do not alter the configuration of the record, and the legible impressions in no way disturb or alter the effects of the magnetic impressions.
  • a space I2 is provided available for the reception of additional magnetic impressions which can be used for various control purposes or in combination with the impressions disposed in the positions Ii to expand the number of code combinations on the records. It is well known that for certain control purposes 11" and 12 index point positions are provided on a control record and in such cases where this is desirable it is possible to impress the discrete magnetic influences to be utilised for control purposes in the "11" and 12" positions for any columnar area Iii, in the space i2 designated on the record in the figure.
  • the record is shown to comprise a carrier or base i3 which may be of paper stock, although other material, preferably non-mag- 15 netic, may be used as a support or backing as long as it is strong and durable and capable of withstanding the stresses to which it is sub- .iected.
  • a wafer or foil of magnetic material i4 is shown secured to the carrier I3 by any suitablev 20 bond or cementitious material I5, such as glue.
  • a layer of suitable paper IB such as mentioned hereinbefore, is provided and secured to the magnetic wafer I4 by a layer of cementitious material I1.
  • the wafer or foil of magnetic material referred to must be made extremely thin, so that recording oi' discrete magnetized areas can be effected on the homogeneous magnetizable material. It has been found that magnetic recordings of the character referred to herein must be made on relative thinner homogeneous material rather than relative thicker material.
  • a record is shown to comprise a sheet of suitable non-magnetic material il such as paper, which is impregnated with granular magnetic material, generally indicated at I9, such 'as iron filings.
  • the carrier i8 may be made by depositing ilnely divided metal powder in the paper pulp so as to be incorporated therein before the manu ⁇ 50, facture of the magnetizable paper stock.
  • the impregnated paper may then be treated and coated on both sides with layers of ink retaining varnish 20.
  • the layers of varnish serve two purposes; (l) to protect the impregnated carrier il, and (2) to provide a writing surface on the record.
  • the impregnated sheet i8 is shown to be covered with layers of suitable plain paper stock 2i secured to the impregnated stock by 60 cementitious material 22.
  • suitable plain paper stock 2i secured to the impregnated stock by 60 cementitious material 22.
  • One of said layers of plain stock 2i should be capable of receiving printing or legible character marks.
  • one of the plies of paper stock 23 is coated with a metallic coating ⁇ 24 and secured 65 to the other by cementitious material 25.
  • suitable metal powder or filings may be suspended in any suitable binder and sprayed or coated on one of the plies of paper stock. Colloidal iron may be used and sprayed thereon as a metallic coating;
  • FIGs. 8 and 9 still another modification is shown to comprise two plies of suitable paper stock 20 and upon one layer individual magnetizable portions 21 are applied thereto. These 75 portions are positioned tocorrespond to the po- The plies of sitioning of the fields Il (Pig. 3), stock 28 are then secured by the 'cementitious material Il.
  • control records suitable for use in present day accounting systems and having suitable characteristics such as rigidity, durability, etc. sovas to be adapted for and capable of being electro-mechanically segregated, sorted, and tabulated. and comprising (l) suitable magnetizable material so that magnetic iniluences directed to certain positions thereof are retained by the records, and (2) that a suitable writing surface is provided on the records, the entire surface of which may be utilized for the reception of the legible characterizations.
  • Tabulating mechanism The principle of operation of the tabulating mechanism now to be described is based on the fact that the records having discrete magnetic impressions representing the data are presented to suitable reading magnets and the said impressions are detected while the records.. are in motion to initiate timed impulses in accordance with the disposition of the impressions on the record to control either data accumulating mechanism or data printing mechanism or both; said accumulating and l'printing mechanisms are adapted to be operated in synchronism with the feeding and sensing of the records so that upon initiation oflthe timedimpuises which control -the operation of said mechanisms, the data entered in the accumulating mechanism and the data recorded by the printing mechanism correspond to the coded magnetic data representations sensed.'
  • the tabulating mechanism shown diagraml matically in Fig. 10 comprises generally three units, namely, the record feeding and sensing unit, the accumulating unit, and the printing unit. Each unit is shown diagrammatically as well as the connections between all the umts;
  • 94-A, ISS-1A, etc. are suitably disposed and this reading or sensing position will be referred to as the upper record sensing position; and between rollers
  • 96 are provided for various machine operation control purposes, whereas the magnets
  • 98 has slidably mounted thereon, but keyed fr rotation therewith, a plurality of clutch elements
  • 99 is provided with a groove in which fits the end of an arm 200 of a suitably pivoted lever 20
  • is normally held in the position shown by armature 202 of a magnet 203. Upon energization of the magnet, the said amature is attracted thereto, thereby releasing the lever 20
  • Gear 205 when thus coupled to shaft
  • the magnets 203 may be energized at various points in the cycle of the machine, depending upon the disposition of the magnetic impressions in the corresponding columnar areas of the record detected by the reading magnets
  • the printing or listing unit comprises a printing cam 2I0 shown associated with the shaft
  • is shown to cooperate with and actuated by a cam groove in the printing cam so that the printing bail or member 2
  • 3 are provided with a plurality of ratchet teeth 2
  • 3 may be interrupted without interfering with the upward movement of the printing member 2
  • 8 is eiective to rock the spring-pressed pivoted latch releasing the associated pawl 2
  • 8 is controlled by the reading magnets
  • 3 is a printing hammer 220 which is positioned to strike the type elements 2
  • the detailed operation of the printing mechanism just described is Well known and also is completely described in the said Lake patent, so that further disclosure of this unit is deemed unnecessary.
  • any of the said areas on the record may be utilized for this purpose.
  • one of the columnar areas near the edge of the record is used for control purposes, andthe associated reading magnets Ill-A and B provided to detect solely the control impressions are shown disposed in both the upper and lower sensing positions.
  • the said reading magnets are connected in series in the input circuit of the associated ampliiier unit 22S-E and the output circuitthereof is connected to the coil of relay 229.
  • the purpose of the series connection of the reading magnets IIC-A and B is that in order for the amplifier unit to operate so that the connected relay 229 can be energized, it is necessary for both magnets to detect the control magnetic impressions on the record simultaneously.
  • the biasing of the grid circuits of the amplifier 22B-E is so arranged that the electrical currents induced by only one reading magnet, either i99-A or ISS-B, is not of sumcient value to overcome the grid bias to permit current to flow in the output circuit of the unit.
  • the electrical energy induced in the said input circuit by the simultaneous detection of magnetic impressions on the records in both sensing positions is of sumcient value to overcome the grid bias provided to permit current to flow in the output circuit and consequently to energize the relay 229.
  • 95-A and B are also shown connected in series,l respectively, similarly as the magnetslS-A and B.
  • 95 are-connected to individual amplifier units 22B- A and B respectively in exactly the same manner as the magnets
  • the operation of the amplifiers 22B-A and B is also eifected in the same manner as described hereinabove, namely, that if either one of the'magnets Ill-A or B detects a magnetic impression the energy induced in the input circuit of the unit 22B-A is insufilcient to overcome thegrid bias thereof and thus the coil 221 of relay 229 remains deenergized to maintain the relay 229 inoperative. But, whenever the magnets I94-A and B detect magnetic impressions on the record carriers at the same time the relay 229 is rendered operative.
  • the machine comes to rest at the D position after this first record feeding cycle, due to opening of the CC-I contacts, with the first record about to pass the upper reading magnets.
  • a second manually initiated cycle then is eected by depression of the start key, similarly as in the first cycle, the machine is operated for one cycle by virtue of the operation of the CC-l contacts.
  • the leading record will be about to pass the lower reading magnets and a second record is presented'to the first set of rollers
  • the leading record will be positioned past the lower reading magnets and the second record will be fed past the upper reading magnets and a third record will be presented to the feed rollers
  • the relays 226, 228, and 229 are rendered operative by the associated detecting magnets andampliiier units.
  • the relays 228 and 229 are each provided with two coils 221 and 232 and 230 and 23
  • being the holding coils.
  • contacts 22B- A are closed to'permit the coil of relay 233 to be energized closing the contacts 233- A.
  • a holding circuit is then established from one side of the line 236 through cam operated contacts CC-2, contacts 233-A and coil of the relay to the other side of the line 231. It is seen that cam contacts CC--2 will maintain this holding circuit for the remaining part of the cycle. 'I'his relay also closes the contacts 233-B.
  • Energization of relays 228 and 229 also close the contacts 228--A and 22S- A respectively to establish holding circuits for the relays through the cam contacts CC-2 and the holding coils 232 and 23
  • Energization of the said relays also closes the contacts 22S-B and 22S-B, so that now the three contacts connected in series are closed to establish a circuit therethrough and shunting the start key contacts to maintain the motor
  • CC--2 contacts are opened momentarily to deenergize the relays 228, 229 and 233; however, during this timed interval CC-I contacts are closed and remain so until the relays 228, 229 and 233 are energized to regain control of the motor circuit.
  • the differentially positioned magnetic impressions are effective to induce electrical energy in the corresponding reading magnets at the diierent times the impressions are detected. 'I'hese currents are then impressed upon the associated amplifiers 225--C and D to energize the connected work circuits.
  • are included in the said output circuits and when positioned so that the contacts -a are engaged the accumulator control magnets 203 are energized. In this manner the magnets 203 are energized at different times in accordance with the differentially positioned amount data magnetic impressions so that the data represented by the impressions are entered into the accumulator.
  • 8 are energized 'by the inltiated impulses in accordance with the amount data impressions to release the pawls so that the upward movements of the type bars 2
  • are positioned to a third position so as to engage the contacts 240-c and d and contacts 24
  • This switching arrangement connects the printing control magnets 2
  • a stop kep 235 is provided so that continued de pression-of this key too would be effective to deenergize the motor circuit and prevent further machine operations.
  • the magnetic data impressions represented at the records are eifective to enter the coded data into data accu--A mulating means; and that the tabulating machine functions may be interrupted by means of control circuits which are controlled by the records, but the records themselves are not physically engaged, when certain ⁇ conditions exist, namely, that the records presented to the machine contain no recorded data, or irregularly Adisposed or no control impressions, or whenever the coded classification data is dissimilar.
  • a recor the control velement comprising a non-magnetic body portrolled by said detecting means and responsive to said impulses.
  • a record element comprising a non-magnetic body portion carrying nely divided mametizable material, said record element having discretely magnetized index points which are disposed at different index point positions, means for detecting magnetically said index points, means for causing continuous relative movement between said record element and detecting means for producing electrical impulses in accordance with the ydisposition of the discretely magnetized index points thereon, and ditlerentially operable devices controlled by said detecting means and responsive to said impulses.
  • a record element comprising a non-magnetic body portion carrying discrete areas of. magnetizable mavices Vcontrolled by said detecting means and re-y sponsive to said impulses.
  • a record element having discrete areas of magnetizable material at al1 the index point positions, certain of which-areas are magnetized to represent the Hindexpoints, which magnetized areas are surrounded by areas of high magnetic reluctance, means for detecting magnetically said index points, means. for causing continuous relative movement between said record element and detecting means for producing electrical impulses in accordance with the-disposition of the discretely magnetized indes: points thereon, and differentially operable devices controlled by said detecting means and responsive to said impulses.
  • a record controlled machine of the class described comprising means for feeding individual records successively, each of said records being provided with magnetizable material and having a control designation thereon consisting of a discrete magnetized area, individual sensing magnets for sensing similarly disposed designations ontwo successive records simultaneously,
  • electron discharge means having an.input circuit including a grid element and an output circuit, means for impressingabias condition on the said grid element and input circuit so that the electron discharge means is substantially nonconductive, means for connecting the said sensing magnets in a series arrangement to said input circuit for altering the bias condition impressed thereupon to render the discharge means'conductive only upon the sensing of similarly disposed designations on two successive records simultaneously by impressing the potentials upon the said input circuit which are induced simultaneously in the said sensing magnets, and means controlled by the output circuit of the said discharge means, when the latter is conductive, for modifying the operation of the said feeding means.

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  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
US214397A 1937-05-27 1938-06-17 Record controlled machine Expired - Lifetime US2254933A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE428205D BE428205A (de) 1937-05-27
NL64016D NL64016C (de) 1937-05-27
CH209242D CH209242A (fr) 1937-05-27 1938-05-18 Elément pour l'enregistrement de données et la commande, selon ces données, de machines statistiques, comptables et autres machines commerciales.
FR838421D FR838421A (fr) 1937-05-27 1938-05-25 Moyens et méthode de calcul
GB15810/38A GB515183A (en) 1937-05-27 1938-05-26 Improvements in or relating to accounting or statistical record cards and related apparatus
DEI61470D DE747009C (de) 1937-05-27 1938-05-26 Verfahren zum Betrieb von Zaehlkartenmaschinen
US214401A US2258106A (en) 1937-05-27 1938-06-17 Apparatus for preparing statistical records
US214397A US2254933A (en) 1937-05-27 1938-06-17 Record controlled machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US145031A US2254931A (en) 1937-05-27 1937-05-27 Control record for accounting machines
US214397A US2254933A (en) 1937-05-27 1938-06-17 Record controlled machine

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Publication Number Publication Date
US2254933A true US2254933A (en) 1941-09-02

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Application Number Title Priority Date Filing Date
US214397A Expired - Lifetime US2254933A (en) 1937-05-27 1938-06-17 Record controlled machine

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US (1) US2254933A (de)
DE (1) DE747009C (de)
FR (1) FR838421A (de)
GB (1) GB515183A (de)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427383A (en) * 1941-07-29 1947-09-16 Ibm Statistical machine controlled by magnetic, frequency coded records
US2436829A (en) * 1945-01-31 1948-03-02 Ibm Bipolar magnetic control record
US2464561A (en) * 1940-01-20 1949-03-15 Ibm Record feeding machine
US2484081A (en) * 1943-04-17 1949-10-11 Ibm Electrical item comparing system
US2535497A (en) * 1946-04-12 1950-12-26 Brush Dev Co Limit control for magnetic recorders
US2547838A (en) * 1947-11-26 1951-04-03 Russell Edward Wriothes Curzon Record bearing medium and methods of preparation
US2589766A (en) * 1945-05-04 1952-03-18 Bradley Evelyn Magnetic oil seal construction
US2594495A (en) * 1947-09-04 1952-04-29 Bell Telephone Labor Inc Magnetic recording system for call data in automatic telephony
US2608346A (en) * 1946-06-14 1952-08-26 Friden Calculating Machine Co Ten key differential entry mechanism
US2680155A (en) * 1949-10-26 1954-06-01 Automatic Elect Lab Telephone system using magnetic recorder
US2697514A (en) * 1952-07-03 1954-12-21 Walter A Stahl Mail sorting device
US2698930A (en) * 1949-03-31 1955-01-04 Remington Rand Inc Magnetic displacement recorder
US2704634A (en) * 1949-06-04 1955-03-22 Rauch
US2722676A (en) * 1952-07-25 1955-11-01 Clevite Corp Magnetic information-storing device
US2781972A (en) * 1951-05-17 1957-02-19 Bull Sa Machines Reading device controlled by magnetic record cards
US2846516A (en) * 1953-08-10 1958-08-05 Ellamac Inc Magnetic recording and reproducing apparatus
US2931571A (en) * 1951-04-11 1960-04-05 Ncr Co Magnetic storage of multiple totals
US2953777A (en) * 1949-07-26 1960-09-20 Darrin H Gridley Shaft position converter device
US3105111A (en) * 1942-11-07 1963-09-24 Bell Telephone Labor Inc High speed telegraphy
US3282210A (en) * 1963-04-10 1966-11-01 Morris O Weig Certified check coded for rejection in sorting machine
US3413448A (en) * 1961-05-25 1968-11-26 Rca Corp Information handling apparatus
US3614394A (en) * 1963-05-31 1971-10-19 Burroughs Corp Data records, and data recording and utilizing methods and means
US3619570A (en) * 1969-05-01 1971-11-09 Int Research Dev Inc Magnetic reading apparatus
US3688268A (en) * 1969-08-11 1972-08-29 Claude A Bedjai Electronic remote control device utilizing modulated transmission of magnetically recorded signals filtered in a receiver
US3788617A (en) * 1967-10-18 1974-01-29 W Barney Coded magnetic card and system for encoding and sensing the same
US3953712A (en) * 1973-11-09 1976-04-27 Engineering Design & Development Pty. Ltd. Magnetic identification apparatus
US4038596A (en) * 1974-07-04 1977-07-26 E M I Limited Method and apparatus for authenticating a record medium consisting of applying two different strength magnetizing fields and monitoring the remanent fields
US4055746A (en) * 1969-11-07 1977-10-25 Glen Peterson Method of and apparatus for securing and storing personal information

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966257C (de) * 1940-08-22 1957-07-18 Int Standard Electric Corp Aufzeichnungstraeger fuer Bildtelegraphenempfaenger und Verfahren zu dessen Herstellung
US2359617A (en) * 1941-11-29 1944-10-03 Ibm Magnetic recording apparatus
FR995514A (fr) * 1945-03-16 1951-12-04 Bull Sa Machines Magasin d'enregistrement électromagnétique
DE1224332B (de) * 1954-07-23 1966-09-08 Erich Hudec Dr Ing Tastengesteuerte Vorrichtung zur magnetischen Aufzeichnung von binaeren Kodezeichen auf ein Magnetband
US2860759A (en) * 1955-02-10 1958-11-18 Ibm Sensing control for tabulating mechanism
DE1150540B (de) * 1955-11-09 1963-06-20 Ncr Co Verwendung sublimierbarer Stoffe fuer fluoreszierende Markierungen auf Informationstraegern
DE1100047B (de) * 1956-04-30 1961-02-23 Taylorix Organisation Einrichtung fuer automatische Zeilenwahl an Schreib-, Rechen- und Buchungs-maschinen
DE1222945B (de) * 1960-09-13 1966-08-18 Grundig Max Magnetodynamische Steuereinrichtung fuer den Wagen an Schreib-, Buchungs- und aehnlichen Maschinen
DE1190712B (de) * 1960-09-17 1965-04-08 Inst Regelungstechnik Einrichtung zur Auswahl und Abtastung von kartenfoermigen Aufzeichnungstraegern fuer die Programmsteuerung automatischer Anlagen
JPH0650876Y2 (ja) * 1987-03-31 1994-12-21 三洋電機株式会社 光学式オーディオディスク

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE274926C (de) *
DE334435C (de) *
DE334922C (de) * 1917-11-02 1921-03-19 Joseph Comes Vorrichtung zum Sortieren und Auszaehlen von Karten fuer statistische Zwecke
DE574129C (de) * 1930-08-26 1933-04-10 Aeg Empfangseinrichtung fuer das Impulsfrequenz-Fernmessverfahren
DE585584C (de) * 1931-05-21 1933-10-05 Aeg Verfahren zum Registrieren der zeitlichen AEnderung von elektrischen Groessen bei Netzstoerungen
US2150256A (en) * 1932-04-06 1939-03-14 Ibm Record controlled statistical machine
US2007391A (en) * 1934-03-30 1935-07-09 Ibm Record controlled punch
CH181408A (de) * 1934-10-18 1935-12-15 Gfeller Chr Ag Registriervorrichtung an Fahrzeugen.

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464561A (en) * 1940-01-20 1949-03-15 Ibm Record feeding machine
US2580740A (en) * 1940-01-20 1952-01-01 Ibm Accounting apparatus
US2427383A (en) * 1941-07-29 1947-09-16 Ibm Statistical machine controlled by magnetic, frequency coded records
US3105111A (en) * 1942-11-07 1963-09-24 Bell Telephone Labor Inc High speed telegraphy
US2484081A (en) * 1943-04-17 1949-10-11 Ibm Electrical item comparing system
US2436829A (en) * 1945-01-31 1948-03-02 Ibm Bipolar magnetic control record
US2589766A (en) * 1945-05-04 1952-03-18 Bradley Evelyn Magnetic oil seal construction
US2535497A (en) * 1946-04-12 1950-12-26 Brush Dev Co Limit control for magnetic recorders
US2608346A (en) * 1946-06-14 1952-08-26 Friden Calculating Machine Co Ten key differential entry mechanism
US2594495A (en) * 1947-09-04 1952-04-29 Bell Telephone Labor Inc Magnetic recording system for call data in automatic telephony
US2547838A (en) * 1947-11-26 1951-04-03 Russell Edward Wriothes Curzon Record bearing medium and methods of preparation
US2698930A (en) * 1949-03-31 1955-01-04 Remington Rand Inc Magnetic displacement recorder
US2704634A (en) * 1949-06-04 1955-03-22 Rauch
US2953777A (en) * 1949-07-26 1960-09-20 Darrin H Gridley Shaft position converter device
US2680155A (en) * 1949-10-26 1954-06-01 Automatic Elect Lab Telephone system using magnetic recorder
US2931571A (en) * 1951-04-11 1960-04-05 Ncr Co Magnetic storage of multiple totals
US2781972A (en) * 1951-05-17 1957-02-19 Bull Sa Machines Reading device controlled by magnetic record cards
US2697514A (en) * 1952-07-03 1954-12-21 Walter A Stahl Mail sorting device
US2722676A (en) * 1952-07-25 1955-11-01 Clevite Corp Magnetic information-storing device
US2846516A (en) * 1953-08-10 1958-08-05 Ellamac Inc Magnetic recording and reproducing apparatus
US3413448A (en) * 1961-05-25 1968-11-26 Rca Corp Information handling apparatus
US3282210A (en) * 1963-04-10 1966-11-01 Morris O Weig Certified check coded for rejection in sorting machine
US3614394A (en) * 1963-05-31 1971-10-19 Burroughs Corp Data records, and data recording and utilizing methods and means
US3788617A (en) * 1967-10-18 1974-01-29 W Barney Coded magnetic card and system for encoding and sensing the same
US3619570A (en) * 1969-05-01 1971-11-09 Int Research Dev Inc Magnetic reading apparatus
US3688268A (en) * 1969-08-11 1972-08-29 Claude A Bedjai Electronic remote control device utilizing modulated transmission of magnetically recorded signals filtered in a receiver
US4055746A (en) * 1969-11-07 1977-10-25 Glen Peterson Method of and apparatus for securing and storing personal information
US3953712A (en) * 1973-11-09 1976-04-27 Engineering Design & Development Pty. Ltd. Magnetic identification apparatus
US4038596A (en) * 1974-07-04 1977-07-26 E M I Limited Method and apparatus for authenticating a record medium consisting of applying two different strength magnetizing fields and monitoring the remanent fields

Also Published As

Publication number Publication date
FR838421A (fr) 1939-03-06
GB515183A (en) 1939-11-28
DE747009C (de) 1944-09-04

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