US2624511A - Record perforation analyzing mechanism - Google Patents

Record perforation analyzing mechanism Download PDF

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Publication number
US2624511A
US2624511A US246362A US24636251A US2624511A US 2624511 A US2624511 A US 2624511A US 246362 A US246362 A US 246362A US 24636251 A US24636251 A US 24636251A US 2624511 A US2624511 A US 2624511A
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US
United States
Prior art keywords
contact
brushes
analyzing
points
brush
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
US246362A
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English (en)
Inventor
Clarence R Manning
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
Original Assignee
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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US246362A priority Critical patent/US2624511A/en
Priority to GB7073/52A priority patent/GB704225A/en
Priority to DEJ6347A priority patent/DE1115499B/de
Priority to FR1075174D priority patent/FR1075174A/fr
Application granted granted Critical
Publication of US2624511A publication Critical patent/US2624511A/en
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
    • G06K7/06—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means which conduct current when a mark is sensed or absent, e.g. contact brush for a conductive mark

Definitions

  • This invention relates to record controlled machines, and more particularly to improvements in record perforation analyzing mechanisms therefor.
  • a series of perforation analyzing brushes are moved downwardly to make contact a series of stationary contact points through the record perforations, said contact points comprising commutator spots which are successively wiped over by a rotary brush to transmit differentially timed electrical digit representing impulses, to control electrical instrumentalities of a record controlled accounting machine.
  • the purpose of this invention is to devise an improved arrangementhaving all'of the advantages of the abovedescribed type of record perforation analyzing mechanism but to construct it in such a manner that a more efficient and longer duration of electrical contact is provided, thus insuring the proper operation of the electrical instrumentalities oi the record controlled accounting machine.
  • One object of the present invention is to dispense with the rotary brush or wiper in the earlier arrangement and effect the electrical contact with the contact points by wire brushes which are positively pressed against said contact points-by successively operated cams, which cams establish by their cam con-tour formations the-time and duration of the electrical contact.
  • Each card column usually has twelve index point positions, 9, 8, '7, 6, 5, 4,3, 2, 1, 0, X and R which are sensed by a corresponding number of perforation analyzing brushes which make individual contact with the commutator spots or contact points through the perforations.
  • the desired pressure contact between each wire brush and its contact point can also be provided 'by having twelve cams which successively press twelve wire brushes against the related commutator contact points but in the preferred arrangement each cam moves a wire brush to make contact with either one of a pair of contact points, thus requiring for twelve contact points only six cams and six wire brushes.
  • a still further improvement is to provide a 2 design of cam which establishes by its cam contour the duration of contact between a wire brush and a commutator point, thus enabling electrical impulses of a longer duration than that possible by a rotary Wiper, as in the earlier Daly Patent No, 2,514,031
  • a still further improvement is to arrange the contact making mechanism in such manner that a second, or following impulse, is initiated before the-preceding impulse is'terminated, thus providing for the transmission of successive overlapping impulses, in the order 9, 8, 7, 6, 5, 4, 3, 2, 1,-(), X and R.
  • a further improvement consists in arranging the contact points in association with the brushes in such manner after two neighboring brushes are operated one after the other in one direction to engage the 9 and 8 commutator contact points to transmit 9 and 8 impulses, then are successively operated in another direction to engage the '7 and 6 commutator contact points to transmit the 7 and 6 impulse.
  • the resultant digit impulses such as 9 andB, will also overlap.
  • the above describes the principle embodied for transmitting 9, 18, 7 and 6 impulses, and by the same mode of operation the remaining four wire brushes transmit overlapping impulses 5, 4, 3, 2, 1, 0, X and R.
  • Fig. 1 is a sectional viewshowing the perforation analyzing brush structure of the prior patented arrangement and its association with the improved contact making arrangement.
  • Fig. 2 is a perspective view showing the manner of forming the commutator contact points so that they are associated with the correct Wire 3 brushes in a manner according to the present invention.
  • Fig. 3 is an enlarged View of two operating cams to show in more detail their cam formations and their relative disposition about their common drive shaft.
  • Fig. 4 is a side elevational view which is partly in section showing the means for supporting a series of wire brushes and their associated. operating cams.
  • Fig. 5 is a timing diagram used in the description for describing the sequence of events.
  • Fig. 1 shows the present improvement coordinated with a part of the structure which is substantially the same as Fig. 9 of the above cited patent.
  • a general description will be given of the common structure using, as far as possible, the same reference numerals as in the aforementioned patent.
  • a frame III is adapted to carry a plurality of analyzing units H2 each comprising a metal plate carrying angularly disposed perforation analyzing brushes I09 which project through the perforations of a perforated card H9.
  • the eighty-column card is preferably of the type shown in the patent to C. D. Lake, No. 1,772,492, issued August 12, 1930, and has in each column from the bottom to top the index points 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, X, R which are read out in the named order. Only one analyzing unit is shown in Fig. 1, but for the analysis of eighty columns of the card a corresponding number of units are provided on the frame I I I, as shown in Fig.
  • each analyzing unit H2 An electrical connection is made to each analyzing unit H2 by an integral terminal H9.
  • the plurality of analyzing units H2 are fitted in spacing slots of insulating spacing bars H5 carried by frame II I and are locked in position in frame III by rods I ll of insulating material which fit in semicircular cutouts formed in the analyzing units H2 and along the edge of each spacing bar H5.
  • This spacing coordinates the analyzing units with the card columns.
  • the frame III is normally elevated so that the card to be analyzed may be fed to the perforation analyzing brushes I99 without interference and is lowered when the card is in analyzing position.
  • a lateral displacement of frame III slightly to the right causes the brushes I99 to wipe over the card, and the particular brush I09 which passes through a card perforation wipes over an associated contact point I89.
  • This lateral displacement of the frame is shown in Fig. 1. With the frame held in such position a card readout operation by the improved mechanism takes place, as will be presently described.
  • the twelve contact points I89 of which there is one for each of the twelve brushes I09 for a card column, project downwardly beneath the bottom surface of the plate I90 and are arranged in pairs so thatthe contact points of each pair are alternately contacted by a wire brush I94. Since there are twelve contact points I89 there are six brushes I9 5 for each card column. Since there is a row of eighty contact points for the same index point a corresponding number of brushes I94 are provided in each row, and are preferably carried by a related bail I95. Each bail I95 is secured to an associated rock shaft I 99 and its transverse plate has eighty holes in which the brushes I94 project through to be separated apart a distance which is commensuratewith the spacing of the adjacent contact points I89.
  • Each rock shaft I96 has a longitudinal slot in which fits a slotted wedging plate I91 to securely and electrically connect the series of eighty brushes I94 to the related rock shaft I99.
  • rocking shaft I96 first counterclockwise a row of wire brushes I94 make contact with the left-hand row of contact points I89 and then rocking shaft I99 clockwise they will make contact with the right-hand row of contact points I89. All the brushes I94 are in a neutral non-contacting position at the start of the operation of the machine.
  • each rock shaft I96 attached to each rock shaft I96 by a clamp I99 is a double follower arm I99 engaging a pair of complementary profile cams 299.
  • the six pairs of complementary cams 299 have the same cam profile but are successively arranged on a drive shaft 43 so as to rock the shafts I99 seriatim.
  • the six shafts I 96 are mounted concentric with respect to shaft 43 and each carries at one end a bushing 2I2 (Fig. 4) fitting in a bracket 2 I 5. By a similar mounting a bracket 2I6 carries the other end of each shaft I98.
  • the drive shaft 5 43 corresponds to the same designated shaft .of the patent to Daly, No. 2,514,031, and is driven one revolution for each cycle of machine operation.
  • the pair of complementary cams 209 which are first effective cause the rocking of the row of brushes l949, 7 (see Fig. l) to .the left to contact the row of 9 contactpoi-nts 189 to read out 9s, then to neutral position. After this the nextpair of complementary cams which are next effective rock the adjacent row of brushes 94-2-8, 6 to the left to read out 8s,-then to neutral position.
  • the cams 200 which were first effective then rock the brushes l94-. 9, 7 to the right to read out-"Zs and then to the left "to neutral.
  • cam'299A rotates counterclockwise its rise ZEHA rocks shaft I96 the same direction, .moving contact wire I 949, 'l to the left from neutral to make contact'at the midpoint of the .cam rise with the 9 contact point I89, the cam rise 20IA thereafter bending brush wire ISM-9, '7 to make a very firm electrical pressure contact.
  • a dwell 202A retains this pressure contact and brush
  • the electrical contact is broken, and the contact wire I94-9, '7 is then restored to neutral position.
  • the period between the make and break establishes the length of the transmitted impulse and is designated 9 at Brush in Fig. 5.
  • cam rise 2MB of lagging cam 290B is effective at about its midpoint to shift brush l94-8, 6 to make contact with the 8 contact point, which is held by the dwell 292B, and part of the descending cam part 2033. This establishes in the same manner the period of the make and break delimiting the 8 impulse.
  • cam Perils 203B, dwell 2043 and .cam portion 205.3 of the lagging cam 2003 makes and breaks the contact bet brush ISA-.8, 6 and the 6 contact Point l89.
  • the successive impulses overlap, that is, one makes before the preceding breaks, but if found objectionable a circuit breaker 9B in the energizing circuit (see timing of fig. 5) may establish shorter digit impulse periods and prevent breaking of the circuits at the brush wires .1914 and contacts 18.9.
  • An analyzing mechanism for analyzing a perforated record having rows of index points comprising a plurality of rows of contact points, one row being provided for each row of index points, a plurality of rows ofanalyzing brushes, each brush adapted to make electrical contact with the associated contact point through a record perforation, a plurality of reciprocable carriers, each carrying a row of brushes adapted to make contact with a related row of contact points representing the same index point, a series of sequentially effective cams, and actuating mechanism operated by said cams to rock said carriers sequentially and to cause said rows of brushes to contact said rows of contact points in succession.
  • An analyzing mechanism for analyzing a ing brushes for each column, a corresponding number of contact points, each of said analyzing brushes adapted to make contact with the associated contact point through a record perforation, contact elements, each adapted to make successive contact with a pair of contact points associated with non-adjacent index points, and means to shift each associated contact element in contact with a related pair of contact points associated with analyzing brushes correlated with non-adjacent index points but in alternation with the'contact of another contact element with its associated pair of contact points.
  • An analyzing mechanism for analyzing a perforated record of the I-Iollerith type having perforations in a column of index points arranged according to a code comprising a series of analyzing brushes for each column, a corresponding number of contact points, each of said analyzing brushes adapted to make contact with the associated contact point through a record perforation, contact elements, each adapted to make successive contact with a pair of contact points associated with non-adjacent index points, and means to shift each associated contact element in contact with a related pair of contact points associated with analyzing brushes correlated with non-adjacent index points but in alternation and overlapping with the contact of an adjacent coritact element with its associated pair of contact elements.
  • An analyzing mechanism for analyzing a perforated record having rows of index points comprising a plurality of rows of contact points, one row being provided for each row of index points, a plurality of rows of analyzing brushes, each brush adapted to make electrical contact with the associated contact point through a record perforation, a plurality of reciprocable carriers, each carrying a row of contact elements adapted to make alternating contact with two rows of contact points associated with two rows of analyzing brushes which analyze non-adjacent index points, and a series of sequentially effective cams constructed and arranged to rock said carriers in such manner that each carrier causes its contact elements to make contact with its related two rows of contact points and in alternation with the contact by the contact elements of the next operated carrier with two other rows of contact points.
  • An analyzin mechanism for analyzing a perforated record of the Hollerith type having perforations in a column of index points arranged according to a code comprising a column of analyzing brushes, a corresponding number of contact points, said analyzing brushes adapted to make contact with the associated contact point through a record perforation, contact elements, each adapted to make contact with a pair of contact points associated with non-adjacent index points, and perforation analyzing readout means constructed and arranged to rock said contact lements in succession and each contact element in alternating contact with a related pair of contact points associated with analyzing brushes correlated with non-adjacent index points but in an alternating overlapping operation with the alternatin contact of the next operated contact element with two other pairs of contact elements associated with analyzing brushes also correlated with other non-adjacent index points.

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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)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Current Collectors (AREA)
US246362A 1951-09-13 1951-09-13 Record perforation analyzing mechanism Expired - Lifetime US2624511A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US246362A US2624511A (en) 1951-09-13 1951-09-13 Record perforation analyzing mechanism
GB7073/52A GB704225A (en) 1951-09-13 1952-03-19 Improvements in or relating to an analyzing mechanism for analyzing a perforated record card
DEJ6347A DE1115499B (de) 1951-09-13 1952-09-12 Kommutator fuer Lochkarten-Abtasteinrichtungen
FR1075174D FR1075174A (fr) 1951-09-13 1952-09-12 Mécanisme d'exploration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US246362A US2624511A (en) 1951-09-13 1951-09-13 Record perforation analyzing mechanism

Publications (1)

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US2624511A true US2624511A (en) 1953-01-06

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US246362A Expired - Lifetime US2624511A (en) 1951-09-13 1951-09-13 Record perforation analyzing mechanism

Country Status (4)

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US (1) US2624511A (fr)
DE (1) DE1115499B (fr)
FR (1) FR1075174A (fr)
GB (1) GB704225A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680791A (en) * 1952-05-08 1954-06-08 Chatelain Frederic Automatic distributor of electric current
US2975966A (en) * 1956-04-09 1961-03-21 Burroughs Corp Coded document reader
US3031136A (en) * 1955-06-13 1962-04-24 Sperry Rand Corp Card sensing device
US3191857A (en) * 1959-11-02 1965-06-29 Pittsburgh Plate Glass Co Glass partitioning process and apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE654413C (de) * 1930-09-04 1937-12-22 Hollerith Maschinen Gmbh Auswertungsmaschine fuer Karten mit Lochkombinationen
DE600947C (de) * 1931-12-16 1934-08-07 Siemens & Halske Akt Ges Einrichtung zum Auswerten von Lochstreifen
US2514031A (en) * 1945-11-19 1950-07-04 Ibm Record perforation analyzing mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680791A (en) * 1952-05-08 1954-06-08 Chatelain Frederic Automatic distributor of electric current
US3031136A (en) * 1955-06-13 1962-04-24 Sperry Rand Corp Card sensing device
US2975966A (en) * 1956-04-09 1961-03-21 Burroughs Corp Coded document reader
US3191857A (en) * 1959-11-02 1965-06-29 Pittsburgh Plate Glass Co Glass partitioning process and apparatus

Also Published As

Publication number Publication date
GB704225A (en) 1954-02-17
FR1075174A (fr) 1954-10-13
DE1115499B (de) 1961-10-19

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