US2398036A - Printing mechanism - Google Patents

Printing mechanism Download PDF

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Publication number
US2398036A
US2398036A US483877A US48387743A US2398036A US 2398036 A US2398036 A US 2398036A US 483877 A US483877 A US 483877A US 48387743 A US48387743 A US 48387743A US 2398036 A US2398036 A US 2398036A
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US
United States
Prior art keywords
shaft
printing
printing mechanism
april
sheet
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
US483877A
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English (en)
Inventor
Robert E Paris
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
Priority to FR927344D priority Critical patent/FR927344A/fr
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US483877A priority patent/US2398036A/en
Priority to GB6950/44A priority patent/GB575846A/en
Priority to US654106A priority patent/US2472919A/en
Application granted granted Critical
Publication of US2398036A publication Critical patent/US2398036A/en
Priority to DEI2055A priority patent/DE871082C/de
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
    • G06K15/08—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by flight printing with type font moving in the direction of the printed line, e.g. chain printers

Definitions

  • This invention relates to a printing machine of the type which prints a plurality ofcharacters at once, for example a complete line, or one or more parts oi a line comprising a plurality of characters.
  • a printing machine of the type which prints a plurality ofcharacters at once, for example a complete line, or one or more parts oi a line comprising a plurality of characters.
  • One example of such a machine is the tabulating machine, but the invention is by no means limited to tabulating machines.
  • An important ⁇ object of th. invention is to increase the speed of operation.
  • the printing mechanism comprises a separate type bar having all the'characters, for each 'column of the record sheet. These type bars are moved longitudinally and stopped at the proper position to place the selected type member in printing position. After the impression is made the type bars are all returned to the normal position.
  • a printing mechanism in accordance with the present invention increases the speed at which the impressions can be made by eliminating certain mechanical limitations of the earlier form of printing mechanism, avoiding the idle stroke of the type bars by which they are restored closer spacing than has been possible with the earlier tabulating machines.
  • Another object is to provide a printing mecha nism of the kind described having fewer parts and a generally simpler'construction.
  • Another object is to provide a multicolumn printer in which each type member serves a plu- I rality of columns.
  • Another object is to provide a printing mechanism which prints without blurring, while the type members and paper have relative motion past the paper.
  • Another object is to provide aprinting mechanism having a reciprocating type member carriage, which prints during ⁇ the movement of the carriage in either direction.
  • Another object is to provide a printing mechanism having a reciprocating type member carto the normal position, providing for the setting up and the printing to be carried out simultaneously by independent means, and reducing the movements of variably movable parts vof the printing mechanism to very small limits.
  • Another object of the invention is to provide a printing mechanismhaving a more positive action l .riage, which prints without blurring, during the movement of the carriage in either direction.
  • Another object is to provide a printing mechi anism which will produce a greater number of carbon copies than has been possible heretofore.
  • anincrease of the number of type characters entails a reduction ofspeed of the machine, because of elongation o fall the type bars.
  • a printing mechanism in accordance with my invention is not materially affected in respect tomechanism capable of printing the charactersatA 6Iv contemplated, of applying that principle.
  • Fig. 1 is a iront elevation ofthe machine, withl the casing removed and parts broken away.
  • Fig. 2 isa right side elevation of the machine.
  • Fig. 3- is a right side elevation of the card reading mechanism.
  • Fig. 4 is a detail view of a portion of the ribbon Fig. 8 is a similar view of the same mechanism, at the limit of the hammer cocking movement.
  • Fig. 9 is a section on the line 9 9 of Fig. 6.
  • Figs. 10, 11, and 12 are detail sectional views of three bearings in the hammer and latching bar mechanism.
  • Fig. 13 is an enlarged plan view, with parts in section, of a portion of the type member carriage and adjacent parts.
  • Fig. 14 is a plan sectional view on a large scale on the line I 4-I4 of Fig. 6.
  • Figs. 15, 16, and 17 are vertical sectional views villustrating three different positions of the storage mechanism and setting mechanism, in relation to one of the units of the selective printing control mechanism.
  • Figs, 18 19, and 20 are three diagrammatic views illustrating the operation of the selective printing control mechanism.
  • Figs. 21 and 22 are perspective views showing two dierent positions f a unit of the storage mechanism, in relation to its related group of pins in the selective printing control mechanism.
  • Figs. 23 and 24 are diagrammatic plan views illustrating the relative positions of the type members and their actuating hammers, at the time the latter are re1eased.
  • Fig. 25 is a vertical section on the line 25-25 of Fig. 1.
  • Fig. 26 is a plan view of the reciprocating drivey of the permutation bar unit.
  • Fig. 27 is a section on the line 21-21 of Fig. 26.
  • Fig. 28 is a development of the spiral cams of the reciprocating drive.
  • Fig. 29 is an enlarged detail plan "view, partly in section of a portion of the setting mechanism and cooperating parts of the storage mechanism.
  • Fig. 30 is a timing diagram of the setting mechanism. 1
  • Fig. 31 is a front elevation of the permutation [bar unit and adjacent parts of the machine.
  • Fig. 32 is an enlarged front elevation of a portion of the permutation bar unit.
  • Fig, 33 is a detail cross section on a still larger scale of a portion of the permutation bar unit.
  • Fig. 34 is a diagram of one sequence ofthe controlling recesses of the permutation bars and corresponding settings of the selective control pins and two different codes for the control records.
  • Fig. 35 is a diagrammatic sectional view of one group of six permutation bars, showing the control recesses for the character 9.
  • Fig. 36 is a, simplified circuit diagram.
  • Fig. 37 is a timing diagram
  • Figs. 38 and 39 are views showing portions of two control cards, with the same data represented in 12 point and 6 point code, respectively.
  • a tabulating machine of ⁇ this kind comprises a card reading mechanism, an accumulating mechanism, and a. printing mechanism.
  • the accumulating mechanism has been omittedI from the present disclosure-which is confined to the novel printing mechanism and the card reading mechanism which controls it.
  • Main drive UPOn the bottom side of a base I0 (Fig. 1) is mounted a part of the driving mechanism which operates continuously. This includes a belt and pulley connection I3 between a motor (not shown) and a worm shaft I4. 'Ihe worm I5 thereon drives worm wheel I8 fixed upon shaft I1, so that said shaft continues running as long as the motor receives current.
  • a clutch for driving the printing mechanism At the right'end of shaft I1 is a clutch for driving the printing mechanism.
  • 'I'his clutch comprises a notcheddisk I8 (Fig. 2) fixed to shaft I1 and adapted to be engaged by a dog II pivotally mounted -upon an arm 20 fixed to a gear 2l.
  • the gear 2i is carried by a stud shaft 22 in axial alignment with shaft I1 and, through idler gear 23, drives gear 24 mounted on shaft 25.
  • a magnet 3B upon energization, draws armature latch 26 to the left as viewed in this figure, releasing dog I9 so that its spring 3
  • armature 2G Upon deenergization of magnet 30 armature 2G will be moved by its spring into the pat/h of a projecting toe of dog I9 to throw the dog out of engagement with disk I8. Arm 20 will be similarly engaged by amature 26 to prevent further movement of gear ZI in a clockwise direction. Arm. 28 is pivoted near its mid point and provided at one endwith a stout spring 32 to absorb the shock of stopping gear 2 I. The usual rebound latch 33 is also provided. l
  • the shaft 25 has fixed 40 to it a gear 34 which meshes with a gear 35 fixed to a shaft 36.
  • a gear l1 meshing with a gear I8 secured to a shaft 39.
  • shaft I1 is shown as carrying a second clutch driving disk Il cooperating with a. dog 4I mounted upon an arm 42 to which is fixedly connected a gear I3 to drive the card reading device, through an idler gear 44.
  • the engagement of these clutch elements is controlled by a magnet .45 and armature latch 48 in the manner described in connection with magnet 30 and its armature latch 26.
  • the printing mechanism is mounted upon side frames 50 and 5I, in an upper frame comprising side plates 52 and 5I attached by cleats Il to subframe members 55 secured to the top of the side frames and 5I.
  • the usual rotary platen 56 is mounternear the rear of the upper frame.
  • Paper line spacing mechanism is provided therei for as described in-the above-mentioned Peirce Patent No. 2,042,324 and the description will not :be repeated in the present disclosure, since it forms no part of the invention.
  • Figure 2 shows a shaft 51 which operates the pawl and ratchet mechanism (not shown) of the line spacing device, this shaft having ilxed to it an arm Il carrying a rod 5! cooperating with the fork of a lever 8l mounted on a stud shaft Il. To the latter shaft is secured an arm 62 connected by a link 63 to an arm Il fixed on shaft Si.
  • This shaft which is the same as shaft III o( Peirce Patent No. 2,042,324, is rocked by a cam mechanism shown in Fig. v15 of said patent.
  • a printing ribbon 49 is supported and fed by mechanism of conventional form, including a spool 89 removably mounted upon a spindlel, the bottom end of which has xed to it a bevel gear 58.
  • a spool 89 removably mounted upon a spindlel, the bottom end of which has xed to it a bevel gear 58.
  • thisvbevel gear is in mesh with ⁇ a bevel gear 69 on an axially shiftable shaft 10, which is intermittently rotated by the usual pawl land ratchet mechanism, notshown in the drawings.
  • the shaft 10 is shifted to engage a bevel gear on its opposite end with a bevel gear on the'spindle of the other spool not shown.
  • the ribbon is drawn through tensioning rollers 1
  • the ribbon is further guided through a slot 13 (Fig. 4) in the bottom of an upright strip 10 secured to the frame in front of the platen, then back through a 45 slot 15, to pass across the front of the platen.'
  • va shaft 16 which has xed on its end an the head and shank at 91 and 98 are arcuate,
  • the shank of the type member'and the edge of the abutment bar 92 have complementary V-shaped surfaces 99, to prevent rebound of the type member on its return to home position, thus preventing shadow I' impressions and insuring repeat operations when arm 11 con ected by a link 18 to an arm 19 fixed upon a sh t 90.
  • the shaft v00 is rocked by cams (not shown) on the shaft 25, through operating arms similar to those which rock the shaft
  • Type member carriage In front of the platen and ribbon is a type member carriage 8
  • This carriage comprises a square tube 82, to the bottom of which is fixed a rabbeted slide 83 guided in a groove formed by rabbeted plates 84 attached to the bottom of a stationary trough 85.
  • Secured to the top oi' the square tube 82 is a channel shaped type member holder 86, the front wall 81 and rear wall 88 of which are slotted to form individual bearings for a row of type members 90.
  • the type members lare pulled to home position against an abutment lbar 92 (see also Fig. 7) by individual retracting springs 9
  • Each type member is composed of a shank 93, which guides the type member in rectilinear motion normal to the platen axis, and a head portion 94 pivoted to the shank by a pin 95 and bearings. type 96.
  • the type is made to strike the record sheet on the platen while the type carriage is in motion, the head f94 turning on the pin 95 during the brief period of impact, to avoid blurring of the impression.
  • the sides of the head 94 ilt snugly in the slot of vthe rear wall 08, but when -the type member camming action of the sides of the slot in the rear wall 88 against the tapered sides 90a. of the type member head. 'I'his insures that the head always starts toward the platen in the normal position and there is no force tending to deflect it, until it strikes the platen-a feature important to uniform spacing.
  • the adjacent surfaces on required as will be seen later.
  • Printing actuator mechanism For each column or character space of the record sheet, there .is provided a printing actuator, in the form of a hammer
  • 00 are slidably mounted in bearing blocks
  • levers down the line slope alternately upward and downward from their pivotal connection at l2 to the arms
  • 03 have a third arm
  • 24 see also Fig. 6
  • the latching dogs are in two groups rockably mounted on shafts
  • Each printing hammer has on its bottom edge a pair of recesses
  • the hammers are made with two recesses
  • 00 a latching bar
  • Th latching bars are slidably mounted in bearing blocks
  • Fig. 6 shows a latching bar

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US483877A 1943-04-21 1943-04-21 Printing mechanism Expired - Lifetime US2398036A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR927344D FR927344A (enrdf_load_stackoverflow) 1943-04-21
US483877A US2398036A (en) 1943-04-21 1943-04-21 Printing mechanism
GB6950/44A GB575846A (en) 1943-04-21 1944-04-14 Improvements in or relating to printing mechanisms
US654106A US2472919A (en) 1943-04-21 1946-03-13 Mechanical movement
DEI2055A DE871082C (de) 1943-04-21 1950-09-22 Anordnung fuer den Typendruck bei Geschaeftsmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US483877A US2398036A (en) 1943-04-21 1943-04-21 Printing mechanism

Publications (1)

Publication Number Publication Date
US2398036A true US2398036A (en) 1946-04-09

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ID=23921860

Family Applications (1)

Application Number Title Priority Date Filing Date
US483877A Expired - Lifetime US2398036A (en) 1943-04-21 1943-04-21 Printing mechanism

Country Status (4)

Country Link
US (1) US2398036A (enrdf_load_stackoverflow)
DE (1) DE871082C (enrdf_load_stackoverflow)
FR (1) FR927344A (enrdf_load_stackoverflow)
GB (1) GB575846A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503504A (en) * 1945-02-19 1950-04-11 Nat Steel Corp Slab stamper
US2598511A (en) * 1947-08-13 1952-05-27 Ibm Translating device for recording machines
US2651254A (en) * 1953-09-08 B crowell
US2653534A (en) * 1948-06-26 1953-09-29 Burroughs Adding Machine Co Wire character forming printing machine
US2681614A (en) * 1949-09-27 1954-06-22 Burroughs Corp Recording machine with grouped recording elements operable selectively to form data-representations
US2682217A (en) * 1948-03-12 1954-06-29 Matthews & Co Jas H Marking device with projectable die means
US2686469A (en) * 1954-08-17 Toggenburger
US2695558A (en) * 1951-12-31 1954-11-30 Ibm Record card controlled printing mechanism
US2726601A (en) * 1950-03-09 1955-12-13 Ibm Multiple line printer
US2787953A (en) * 1953-04-02 1957-04-09 Anker Werke Ag Print device shifiting means for effecting interspersed printing
US2938455A (en) * 1954-12-31 1960-05-31 Ibm Wire printer
US3157115A (en) * 1962-12-03 1964-11-17 Soroban Engineering Inc Printing mechanism

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL234516A (enrdf_load_stackoverflow) * 1957-12-24
DE1294713B (de) * 1966-07-20 1969-05-08 Kienzle Apparate Gmbh Druckeinrichtung fuer fliegenden Druck mit einer staendig umlaufenden Typenwalze
US3677384A (en) * 1970-12-16 1972-07-18 Triumph Werke Nuernberg Ag Mechanism for positioning single element type carriers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651254A (en) * 1953-09-08 B crowell
US2686469A (en) * 1954-08-17 Toggenburger
US2503504A (en) * 1945-02-19 1950-04-11 Nat Steel Corp Slab stamper
US2598511A (en) * 1947-08-13 1952-05-27 Ibm Translating device for recording machines
US2682217A (en) * 1948-03-12 1954-06-29 Matthews & Co Jas H Marking device with projectable die means
US2653534A (en) * 1948-06-26 1953-09-29 Burroughs Adding Machine Co Wire character forming printing machine
US2681614A (en) * 1949-09-27 1954-06-22 Burroughs Corp Recording machine with grouped recording elements operable selectively to form data-representations
US2726601A (en) * 1950-03-09 1955-12-13 Ibm Multiple line printer
US2695558A (en) * 1951-12-31 1954-11-30 Ibm Record card controlled printing mechanism
US2787953A (en) * 1953-04-02 1957-04-09 Anker Werke Ag Print device shifiting means for effecting interspersed printing
US2938455A (en) * 1954-12-31 1960-05-31 Ibm Wire printer
US3157115A (en) * 1962-12-03 1964-11-17 Soroban Engineering Inc Printing mechanism

Also Published As

Publication number Publication date
FR927344A (enrdf_load_stackoverflow) 1947-11-04
GB575846A (en) 1946-03-07
DE871082C (de) 1953-03-19

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