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US2111122A - Printing mechanism - Google Patents

Printing mechanism Download PDF

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Publication number
US2111122A
US2111122A US117140A US11714036A US2111122A US 2111122 A US2111122 A US 2111122A US 117140 A US117140 A US 117140A US 11714036 A US11714036 A US 11714036A US 2111122 A US2111122 A US 2111122A
Authority
US
United States
Prior art keywords
type
bar
spring
bail
magnet
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
US117140A
Other languages
English (en)
Inventor
Albert W Mills
Edward J Rabenda
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 US117140A priority Critical patent/US2111122A/en
Priority to FR830880D priority patent/FR830880A/fr
Priority to DEI1489D priority patent/DE1011192B/de
Priority to GB35416/37A priority patent/GB507856A/en
Application granted granted Critical
Publication of US2111122A publication Critical patent/US2111122A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/04—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by rack-type printers

Definitions

  • a further object of the invention resides in the 30 provision of an improved type bar Vpositioning mechanism whereinasingle selecting magnet is utilized and which will select the digit type in response to a single energization of the magnet and will select an alphabetic type upon repeated
  • alphabetic characters are represented on the well known Hollerith tabulating card by two perforations located in different index point positions of a single f 4@ column of the record card.
  • One of these pervforations is known as the digit perforation and the other as the zone perforation.
  • the record cards are passed through the usual card feeding and sensing devices so that the index point positions pass a set of sensing brushes in succession in such manner that the digit perforations are first sensed and the corresponding digit type are selected. Subsequently, the zone perforations pass the same sensing brushes and the presence 54) of a zone perforation will cause the selection of the appropriate alphabetic type to supersede the initial 'selection of the digit type.
  • a further object of the invention is to provide improved mechanism for reciprocating the type bars.
  • machines 'are constructed are employed, the provision ofv with a spring arrangement to resilient-,ly elevate the type bar in which one end of the spring is operatively connected to the type bar and the fother end is connected to a member which has an invariable movement so that upon interruption of the advance of the type bar, the spring will yield.
  • a so-called whip brought about by the' high frequency at which the spring is compressed and expanded.
  • a second spring is provided of which one end nected to the type bar and the other end is anchored to a fixed support and the two springs, operating jointly, maintain aimore exact control over the reciprocation of the type bar.
  • a further object-of the invention resides in the provision of a type bar selecting magnet in which two separate armatures are provided, one at each pole of the magnet, of which .one armature is operated to effect digit type selection and the second armature is operated tov effect alphabetic type selection.
  • a still further object of the invention is to prois operatively convide an improved type bar positioningv arrangement wherebyl manual adjustment of the ultimate printing position may be made separately for each type carrier so that slight variations in the proportioning of the parts when manufactured may be compensated for when the parts are assembled into the complete machine.
  • Fig. l is a central section of the printing mechnism showing the improved construction.
  • Fig. 2 is an outside view of the mechanism showing the operating instrumentalities.
  • Fig.. 3 is an end view of part of the printing mechanism, ,the view lookingfrom the left in Figs. 1 and 2. y
  • Fig. s is an enlarged position view of the type bar positioning mechanism.
  • f Fig. 5 is a frent of a record card showing the combinational arrangement of perforations to represent the alphabetical characters and also .the usual digit perforations.
  • Fig. 6 is a section taken on lines t-l-B of Fig, 3,
  • Fig. 8 is a timing chartshowing the timing of the various operating cams.
  • the record card C has the usual perforations for indicating numerical values as shown in the left end of the card.
  • the alphabetical characters from A to I are combinations of one of the numerical characters from 9 to 1, plus a perforation in the ,R index point position.
  • the characters J to R each comprises a perforation in one of thenumerical positions 9 to 1, plus a perforation in the X index point position.
  • the remain? ing letters of the alphabet, namely, S to Z each comprises a combination including one of the perforations 9 to 2, plus a perforation in the zero index point position.
  • 'I'he record cards are placed in the card feeding mechanism of the machine, which is not shown but which may be of the type fully shown and described in Patent No. 1,827,259, granted to J. R. Peirce, October 13,
  • Fig. 1 there is shown, in a diagrammatic manner, the analyzing brushes LB past which the cards are traversed in succession under the control of feed rollers i6.
  • the circuit for any card column may be traced from the negative side of line i9, through theusual card lever contacts l ii, circuit breaker i2, common contact roller I3,
  • the cards traverse the brushes LB with the 9 index point positions leading so that fori any column in which an alphabetic character is entered, the digit perforation will iirst complete the circuit to energize magnet i9 and thereafter when the zone hole arrives at the brush, the circuit will again be completed to energize the magnet a second time.
  • Fig. is shown the type head 2
  • the various characters are arranged and labelled in accordance with a particular zone.
  • the digits are included in zone l; the letters Z to S, in zone 2; .i to R, in zone 3; and A. to i, in zone e.
  • Reference to Fig. 5 will show that the letters R, and Z, each contains a perforation in the 9 index point position, but has a different zone perforation R, X, and O.
  • the letters H, Q, and Y each contains the perforation 9 and a diderent zone perforation.
  • the type head 2i is arranged to be :moved to pass the printing position opposite platen 23 in synchronism with the movement of the card by the brushes LB and as the 9 index point positions traver'se the brushes, they Z type element 22 will be approaching the printing position; as the 8 index point positions traverse the brushes, the Y type element 22 will be approaching printing position. and so on.
  • (see also Fig. 1) carries arms 32 which have depending link connection 33 with a bail 34 which is pivoted at 35. Also pivoted at 35 are type carrier actuating arms 36 which are connected at their free ends through links 31 to the type bars 38 upon which the type heads 2
  • Each carrier 39 is provided with a series of teeth 43 which, as seen in Fig. 1, are labelled 9 to 0 and which represent corresponding index point msitions on the record card C. As the type bar 39 is moved upwardly, the teeth 43 move to pass s: stopping element 44. 'I'he element 44 is pivoted at 45 to a bell crank 46 which is normally held in the position shown by a bell crank latch 41 which has connection through a link 48 to the pivoted armature 49 of magnet i9.
  • the member 50 is provided with teeth 55 which, under control of the bail 54, move downwardly to pass the toe of a. stopping paw] 56 during the time that the zone perforations 0, X. and R pass the brush LB.
  • the pawl 56 is normally held in the position shown with its toe 'out of the path of the teeth 55 by a bell crank latch 51 which has link connection 58 with the lower armature 59 of magnet
  • v column the a tooth 43.
  • the type bar will press upwardly l'against vwith a shaft 81 /index point positions pass the the second tooth, if it is in the X hole; the third tooth, if it is an R hole. If no zone hole is present, the lever 50 will rock an additional step to cause the last extended tooth 55 to engage the pawl 56.
  • the shaft 24 v carries a gear 6
  • the shaft 63 carries the various cams for operating the stopping mechanism.
  • the bail 60 is carriedby a shaft 65 which in Fig. 2 has an arm 66 connected by a link 61 to an arm 69 on a shaft 69.
  • ⁇ As shown in Fig. 7,/ti'1is shaft carries a follower arm 10 in cooperation with cam 1
  • Fig. 6 is shown a cam 12 cooperating with a follower arm 13 on shaft 14 which shaft has arm and link connection 15 (see also Fig.
  • balls 60 and 11 Will both be rocked counterclockwise to release their latch and pawl respectively for operation.
  • the balls 9 3 and. 54 will commence to rock counterclockwise and the type bar pressing upwardly against bail 93, through the free end of element 44, will move upwardly under control of the bail 93.
  • the teeth 55 will pass the toe of pawl 56 as the zone positions pass the brush.
  • the bar 52 is freely supported in guides
  • lEach bar has a cooperating adjusting screw, with a locking member
  • the' operation is such that on the first energization of magnet i9, the type bar will be interrupted by element 44 and' held by the bail 93.A
  • the parts are so constructed that the upward pressure of the type b'ar is not transmitted at this time to the vlever 56; all of the strain being taken up by As the zoning positions pass the-brushes, the bail 93 will permit further advance of the type bar until the last tooth 55 of lever 50 engages the pawl 56. At this time, the upward pressure of the type bar is transmitted to' the lever 50 which serves to effect the final positioning of the selected type element.
  • the provision of the second spring 4I serves to resist any tendency of .the arm 36 to overthrow at the end of the downward stroke as a result of the momentum developed when operated at speeds in excess of 200 cards vper minute.
  • the spring arrangement shown there is a ybalanced spring tension for both directions of operation; that is, as the type bar rises, there is a decrease in tension on spring 4
  • On the return stroke there'is a decrease in tension on spring 40, which decreases to normal tension at the time the type bar is picked up, at which time the tension on spring 4
  • a printing mechanism having a type bar with a plurality of groups oftype, a movable stopping element for the bar, a second stopping element for the said movable stopping element, a controlling magnet having a pair of armatures operated thereby, means controlled by one of said armatures foroperating said movablev stopping element and means controlled by the second armature for controlling said second stopping element.
  • a movable type bar, a movable stop for said bar means for moving said stop into engagement with the bar'for movement therewith, a second stop for the iirst stop, movable with the same. a third stop for limiting the movement of the second stop and means for effecting an adjustment of said third stop to vary the limiting position thereof.
  • a pair of springs operatively connected to said bar to urge it upwardly into ,printing position, the end oi one of said springs being xed and the end of the other attached to a movable member, means for interrupting the upward movement of the type bar whereupon the spring with its end fixed will hold the bar in position with decreased tension and the spring with its end movable will increase its tension on the bar.
  • a sensing element for sensing a column of a record card, a type carrier having numerical and alphabetic type thereon, a single magnet, a pair of armatures moved by the magnet in opposite directions, means controlled by said sensing element to repeatedly operate said magnet, means for causing said magnet to operate one armature on the rst operation andthe second armature on the second operation, means controlled by said rst armature to select a numerical type and means controlled by the second. armature to supersede saidselection and select an alphabetic type.
  • a type bar means formoving the same, a movable stop for the bar, a pivotable stop for said rst stop and adjustable means for varying the pivoting position of said second named stop vto adjust the ultimate stopping position of the type bar.
  • a type bar means for moving th same, means forstopping the bar including a lever mounted for rotation, means for diierentially rotating the lever to select a stopping position for the type bar and adjustable means for varying the point of rotation of the lever.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Impact Printers (AREA)
US117140A 1936-12-22 1936-12-22 Printing mechanism Expired - Lifetime US2111122A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US117140A US2111122A (en) 1936-12-22 1936-12-22 Printing mechanism
FR830880D FR830880A (fr) 1936-12-22 1937-12-16 Mécanisme d'impression pour machines comptables
DEI1489D DE1011192B (de) 1936-12-22 1937-12-21 Druckende Tabelliermaschine mit hin- und hergehenden Typentraegern
GB35416/37A GB507856A (en) 1936-12-22 1937-12-21 Improvements in or relating to record-card controlled printing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US117140A US2111122A (en) 1936-12-22 1936-12-22 Printing mechanism

Publications (1)

Publication Number Publication Date
US2111122A true US2111122A (en) 1938-03-15

Family

ID=22371160

Family Applications (1)

Application Number Title Priority Date Filing Date
US117140A Expired - Lifetime US2111122A (en) 1936-12-22 1936-12-22 Printing mechanism

Country Status (4)

Country Link
US (1) US2111122A (de)
DE (1) DE1011192B (de)
FR (1) FR830880A (de)
GB (1) GB507856A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478277A (en) * 1946-04-01 1949-08-09 Ibm Data storage device in printing machines
US2547457A (en) * 1945-06-22 1951-04-03 Ibm Drive means for reciprocable type bars
US2594787A (en) * 1952-04-29 Ticket printing and issuing machine
US2615622A (en) * 1952-10-28 Rebound preventing means for
US2683410A (en) * 1949-03-08 1954-07-13 Burroughs Corp Selective wire printing machine
US2757604A (en) * 1953-08-26 1956-08-07 Burroughs Corp Decoding and character forming means for high speed recorder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159672B (de) * 1959-11-13 1963-12-19 Anker Werke Ag Einrichtung zum Stoppen von Bauelementen in Bueromaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525347C (de) * 1928-12-18 1931-05-22 Tabulating Machine Company Durch Lochkarten gesteuerte Tabellier-Maschine mit Druckvorrichtung
US1947259A (en) * 1932-04-23 1934-02-13 Ibm Printing mechanism for tabulators
FR734945A (fr) * 1933-03-20 1932-10-31 Dispositif imprimeur particulièrement applicable aux machines à statistiques, machines à calculer ou machines à tabuler pour fiches perforées

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594787A (en) * 1952-04-29 Ticket printing and issuing machine
US2615622A (en) * 1952-10-28 Rebound preventing means for
US2547457A (en) * 1945-06-22 1951-04-03 Ibm Drive means for reciprocable type bars
US2478277A (en) * 1946-04-01 1949-08-09 Ibm Data storage device in printing machines
US2683410A (en) * 1949-03-08 1954-07-13 Burroughs Corp Selective wire printing machine
US2757604A (en) * 1953-08-26 1956-08-07 Burroughs Corp Decoding and character forming means for high speed recorder

Also Published As

Publication number Publication date
GB507856A (en) 1939-06-21
DE1011192B (de) 1957-06-27
FR830880A (fr) 1938-08-11

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