US2879876A - Single element printing machine - Google Patents

Single element printing machine Download PDF

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Publication number
US2879876A
US2879876A US547482A US54748255A US2879876A US 2879876 A US2879876 A US 2879876A US 547482 A US547482 A US 547482A US 54748255 A US54748255 A US 54748255A US 2879876 A US2879876 A US 2879876A
Authority
US
United States
Prior art keywords
selecting
single element
palmer
shaft
clutch
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
US547482A
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English (en)
Inventor
Leon E Palmer
Ralph E Page
John E Hickerson
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 US547482A priority Critical patent/US2879876A/en
Priority to FR1172051D priority patent/FR1172051A/fr
Priority to GB34811/56A priority patent/GB842327A/en
Priority to CH341841A priority patent/CH341841A/fr
Priority to DEI12461A priority patent/DE1078591B/de
Application granted granted Critical
Publication of US2879876A publication Critical patent/US2879876A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/54—Selecting arrangements including combinations, permutation, summation, or aggregation means
    • B41J7/56—Summation devices for mechanical movements
    • B41J7/64—Pulley and strand mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/60—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies on spherical, truncated-spherical, or like surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/50—Type-face selected by combinations of two movements of type carrier

Definitions

  • This invention relates to typewriters and more particularly to an improved single element typewriter having an improved selecting and printing mechanism.
  • a single element typewriter is one having a, single element printing head wherein all the characters of a type font are positioned on the surface of one printing device, which device may be positioned for printing engagement with a paper carrier with a selected charactor of the type font in printing position.
  • Fig. 2 is a section through plane 22 of Fig. 1.
  • Fig. 2B is a perspective view of a portion of a shift mechanism.
  • Fig. 2C is an enlarged side elevation of the shift clutch shown in Fig. 2B.
  • Fig. 2D is a section of the shift clutch taken through plane 2D2D of Fig. 2C.
  • Fig. 3 is a perspective view showing a portion of a selection control mechanism.
  • Fig. 3A is a section of the cycling clutch taken through plane 3A--3A of Fig. 3.
  • Fig. 4A is a perspective view showing the selecting cams.
  • Fig. 4B is a continuation of Fig. 4A including a one revolution clutch and a shift clutch.
  • Fig. 4C is a diagrammatic perspective view of the wires controlling rotation of a single element print head.
  • Fig. 4D is a diagrammatic perspective view of the wires controlling a tilt operation of .the single element print head.
  • Fig. 4E is a code chart.
  • Fig. 5A is a perspective view showing the operation of the platen indexing mechanism.
  • Fig. 5B is a side elevation of the indexing cam and cooperating pawls taken along plane 5B--5B of Fig. 5A.
  • Fig. 6 is a perspective view showing a carriage return mechanism.
  • Fig. 7. is a perspective view showing a back space mechanism.
  • Fig. 8 is a perspective view showing the space bar and esca-nernent mechanism.
  • Fig. 9 is a perspective view showing the tabular mechanlsm.
  • Fig. 9A is an enlarged perspective view of the tab latching mechanism in an. unlatched position.
  • Fig. 9B is an enlarged perspective view of the tab latching mechanismin a latched position.
  • Fig. 10 is a perspective view showing the type head and carrier mounting.
  • Fig. 11 is a perspective view of the head carrier showing the print cam.
  • Fig. 12 is an exploded perspective view of the paper guide, and its supporting frame.
  • Fig. 13 is an exploded perspective view showing the ribbon feed operation. I i
  • Fig. 14 is a timing diagram.
  • this invention relates to an improved single element typewriter. acting in combination with mechanisms for cyclically selecting and printing a predetermined character.
  • the printing element is character spaced across a page and at each printing position, a cycle of operation is instituted in response to manipulation of a key'lever wherein one character is platen,
  • the type head 8 is supported on a carriage 10 which is movable along guide rails 12, 14 across the paper feed unit.
  • this typewriter is unconventional in that the paper feed unit remains stationary while the printing element moves across the page.
  • Thetypewriter is also provided with theusual key I levers 16 having their own key buttons 18, respectively.
  • the key levers 16 (Fig. 2) are shown pivotally supported about a fulcrum rod 20 which extends transversely of the machine in a conventional manner.
  • a key By a conventional guide comb '24, it acts on an interposer' 22 (one for each key lever, respectively).
  • the interposers are pivotally supported about fulcrum rod 26 [which extends transversely of the machine) in such a manner that each interposer can bothbe rocked clockwise about the fulcrum rod 26 and slid transversely within :he limits defined by the slotted opening 28.
  • Each key lever 16 is provided with a finger 30 which acts on a bent over ear 32 extending integrally from the :Orresponding interposer 22.
  • the finger 30 pushes on the bent over ear 32 to rock the interposer :lockwise about the fulcrum wire 26, and in doing so, a hail 34, which extends transversely of the machine, is moved downward to a tripping position as well as hereinafter explained.
  • the bail 34 is used to trigger a clutch which will be later described to cause a one-third revolution of a filter shaft 36. It will be noted that when the interposer 22 has been rocked clockwise into an active position (dotted line position of Fig. 2), an actuating shoulder 38 is positioned for engagement by one of the lobes 40 of the filter shaft 36, which lobe will drive the interposer 22 to the left as viewed-in Fig. 2 within the limit of the elongated slot 28. In this movement of the interposer shaft to the left, it will be noted that a plurality of selecting fingers 42 which are an integral part of the interposer 22 will act to rock predetermined selecting bails 44 about their shoulder 38 to drive the interposer 22 to the left.
  • the interposer 22 is spring biased by the spring 70 upward and to the right. Accordingly, it can be appreciated that when the interposer 22 is driven to the left, and as soon as it is removed from contact with the key lever tripping finger 30, the spring 70 will take over tending to pull the interposer counterclockwise about the fulcrum 26, which action will disengage the interposer from the filter shaft 36 and thus release the bail 34 which in turn will restore the trip pawl 56 to the position shown in Fig. 3.
  • a stop 71 is positioned transversely of all the interposers to engage a camming ear 73 which forces the interposer upward.
  • the arrangement of parts is such that after the filter shaft 36 has made oneninth of a revolution, the interposer 22 will be disengaged from the tripping finger 30 and hence the bail 34 and the trip pawl 56 have a time equal to the remaining twoninths of a revolution of the filter shaft 36 to be restored.
  • the timing is such pivots '46.
  • the selecting fingers 42 are arranged in some combination of seven so that any number of selecting balls 44 (up to seven) may be rocked about Operation of the filter shaft .
  • a. filter belt 50 is illustrated as being driven under control of a motor, not shown, to drivev a filter pulley 52 in a counterclockwise direction as shown by the arrow in Fig. 3.
  • the bail 34 is depressed each time a key lever is rocked.
  • the bail 34 is pivotally supported about an axis 53 of a crank member 54 which, in turn, is supported in the side frame.
  • the rocking of the bail about its axis 53 causes a filter pawl 56 (attached to crank member 54) to be lifted out of engagement with a lobe on a primary filter cam 58.
  • the pulley 52 is rotatable freely about the filter shaft 36.
  • pulley 52 is connected via a filter or spring clutch 60 to the filter shaft 36.
  • the filter clutch 60 comprises a primary member 58 and a secondary member 64, with the secondary member being pinned or otherwise secured by a set screw to the filter shaft 36 and with the primary and secondary members being interconnected via a coil spring 66.
  • the coil spring will be unwound to a large diameter thereby permitting the hub of pulley 52 to rotate freely on the filter shaft 36; but when the spring clutch is tightened, it will grip the hub of pulley 52 and thereby drive the filter shaft 36.
  • the filter pawl 56 is in engagement with a lobe on the primary 58 of the filter clutch 60 and when the pawl 56 is lifted out of engagement with a lobe on the primary, the spring 66 tightens to cause rotation of shaft 36.
  • the complementary pawl 68 serves merely to prevent a back lash of the secondary member 64 and thereby insures the release of the spring 66 when the pawls are in the posi tion Shown in Fig. 3.
  • filtershaft 36 After the filter pawl 56 is raised out of engagement with the lobe on the primary 58, filtershaft 36.will rotate until the pawl 56 engages the that filter pawl 56 is always back into engagement with the lobe of the spring clutch in time to guarantee a single one-third of a revolution.
  • a key stroke or a cycle is determined by a third of the revolu tion of the filter shaft 36.
  • the rocking of the key lever 16 acts on the interposer to trip a spring clutch to cause a one-third revolution of the filter shaft 36, which in turn drives the interposer to the left thereby rocking predetermined selecting bails 44 to move the corresponding selecting links 48.
  • the selecting links 48
  • Selecting mechanism As shown in Fig. 3, there are seven selecting links 48 which can be moved in response to the rocking of the selector bails 44.
  • One of the links 48-1 is conditioned for operation for each key lever, and its function is to trigger a selecting clutch, while the other six links 48-2; 48-4; 48-6; 48-8; 48-10; 48-12 are used to condition dog clutches which in turn, determine the result which is produced by the selecting clutch under control of the link 48-1.
  • a selector belt 72 is shown continuously driven under control of a motor (not shown) to rotate a primary selector shaft driving shaft 74 in a counterclockwise direction.
  • the primary selector shaft is connected to a secondary selector shaft through a selecting clutch 76.
  • the link 48-1 rocks the cycle bell crank 78 which is pivotally supported about a pin 80 carried by the frame.
  • the selecting clutch 76 is a conventional spring clutch of a type well known in the art.
  • Selecting clutch 76 is a one revolution clutch, therefore only one lobe 83 is provided.
  • the secondary shaft 84 carries a number of dog clutches which are triggered by the selecting links 48, and the dog clutches are conditioned for operation before the selecting clutch 76 is released to make a revolution.
  • dog clutches 862, 86-4, 86-6, 86-8, 86-10 and 86-12, respectively, are provided to be operable in response to the movement of a corresponding selecting link 48. Since the operation of all the dog clutches are identical only one will be described.
  • each dog clutch 86 comprises a cam 88, an engaging dog 90 and a spring 92 tending to bias the dog 90 into engagement with a slot or key way 94 which runs along the secondary selecting shaft 84.
  • the dog 90 is pivotally-supported on a pin 96 carried by the cam 88 for rocking movement into and out of engagement with the key Way of the secondary selecting shaft.
  • a nose of the unlatching pawl 98 is hooked behind the tail of the dog 90 to rock the latter clockwise about its pivot pin 96 thereby disengaging the dog from the key Way.
  • the unlatching .pawls 98 are spring biased into engagement with the tailsof their corresponding dogs 90. Therefore, as soon as an interposer 22 is disengaged from the filter shaft 36, the unlatching pawl 98 snaps back into the position shown in Fig. 4A.
  • a spring 92 is used to drive the dog into engagement with the slot 94 in the secondary selector shaft. It can be appreciated therefore, that unless the cam 88 is blocked from moving, the combined action of spring 92 and unlatching pawl 98 will act to rotate the cam 88 clockwise and then dog 90 would not be in position to engage the slot of the secondary selector shaft at the next cycle of operation. Accordingly, a cornplementary latching pawl 102 is provided for eachof the dog clutches to prevent rotation of the cam 88 while the dog 90 is unlatched. That is, the cam 88 is provided with a lug 104 and the interengagement of the lug 104 and latching pawl 102 will prevent clockwise rotation (as view in Fig.
  • a cam follower arm 106 which is pivotally supported about either the upper pivot 108 or the lower pivot 110 (depending on its location), is provided for each cam 88, respectively.
  • the rocking of a cam follower arm in re sponse to the rotation of its corresponding cam causes" a respective wire pulley 112 (carried by cam follower arm 106) to be raised orlowered (depending on its-location")- thereby rocking the cam follower arm clockwise or counterclockwise about its pivot 108 or 110 respectively.
  • the cam follower arm is provided with" a cam follower 107 which is supported for rotation about a pivot 109 and the cam follower rides on one of thecams 88 driven by the secondary selector shaft. This rocking of the cam follower arms extends or contracts the efiective length of a selecting wire 114, Fig. 4C,- which has a path around the wire pulleys 112.
  • the carrier 10 is illustrated schematically as being movable across a printing page between the'left and righthand margins.
  • a carrier loop wire 116 is illustrated as passing around pulleys 118 and 120 to be attached at one end 122 to the carrier 10 and at the other end 124 to a pulley 126 to which there is attached the printing head 8.
  • pulley 118 is fixed but free to rotate while pulley 120 is simultaneously rotatable and movabletoward and away from pulley 118. If the pulleys 118- and 120 remain in the positions illustrated in Fig. 4C, the carrier 10 can be moved betweenthe left and right hand margins of the page, without any movement of the pulley 120.
  • the pulley 126 is spring" biased in a counterclockwise direction whereupon for each movement of the pulley 120 away from pulley 118, the spring will rotate pulley 126 counterclockwise; while movement of pulley 120 toward pulley 118 will rotate pulley 126 clockwise in opposition to the spring.
  • the type head can be rotated (in lower case) counterclockwise from home position one to five columns; or clockwise one to five columns. Then for upper case the type head is rotated first through to position the upper case home position in print position before the selective column movement is super imposed. 1 1

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  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)
US547482A 1955-11-17 1955-11-17 Single element printing machine Expired - Lifetime US2879876A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US547482A US2879876A (en) 1955-11-17 1955-11-17 Single element printing machine
FR1172051D FR1172051A (fr) 1955-11-17 1956-11-13 Machine imprimante à élément unique
GB34811/56A GB842327A (en) 1955-11-17 1956-11-14 Improvements in typewriters
CH341841A CH341841A (fr) 1955-11-17 1956-11-16 Machine à écrire à tête imprimante
DEI12461A DE1078591B (de) 1955-11-17 1956-11-16 Druckeinrichtung an einer kraftangetriebenen Schreibmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US547482A US2879876A (en) 1955-11-17 1955-11-17 Single element printing machine

Publications (1)

Publication Number Publication Date
US2879876A true US2879876A (en) 1959-03-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
US547482A Expired - Lifetime US2879876A (en) 1955-11-17 1955-11-17 Single element printing machine

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Country Link
US (1) US2879876A (fr)
CH (1) CH341841A (fr)
DE (1) DE1078591B (fr)
FR (1) FR1172051A (fr)
GB (1) GB842327A (fr)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978086A (en) * 1959-10-14 1961-04-04 Ibm Key operated machines
US3038577A (en) * 1960-01-26 1962-06-12 Royal Mcbee Corp Keyboard control and actuating apparatus
US3145070A (en) * 1963-01-08 1964-08-18 Milgo Electronic Corp Multiple symbol graphical recorder
US3195707A (en) * 1962-07-16 1965-07-20 Royal Mcbee Corp Keylever signal storing mechanism
US3205996A (en) * 1962-01-24 1965-09-14 Greenwood Joseph Arthur Space computer for justifying typing machine
US3212616A (en) * 1963-06-07 1965-10-19 Royal Mcbee Corp Space and repeat space bar mechanism for an electric typewriter
US3217850A (en) * 1963-11-21 1965-11-16 Royal Typewriter Co Inc Forward and back spacing mechanism
US3233715A (en) * 1964-04-20 1966-02-08 Invac Corp Transmitter receiver machine employing print sphere typewriter structure
US3276562A (en) * 1963-12-19 1966-10-04 Ibm Automatic document handling and control apparatus
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US3286806A (en) * 1964-09-16 1966-11-22 Olympia Werke Ag Rotatable and tiltable type head control apparatus
US3289805A (en) * 1964-11-27 1966-12-06 Scm Corp Typewriter having typelevers mounted on a rotating member
US3289804A (en) * 1963-06-14 1966-12-06 Ibm Automatic sequence typing mechanism for printing words upon depression of a single key
US3300017A (en) * 1965-04-30 1967-01-24 Sperry Rand Corp Electrosensitive printing apparatus with print head continuously moved across paper
US3311211A (en) * 1966-01-14 1967-03-28 Ibm Keyboard sequence discriminator with different codes for upper and lower case
US3315776A (en) * 1965-04-29 1967-04-25 Scm Corp Office machine with rotary carriage control member
US3317020A (en) * 1964-07-30 1967-05-02 Siemens Ag Keyboard providing different unrelated codes in response to caseshift operation
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements
US3380569A (en) * 1962-10-02 1968-04-30 Intcrcontiental Systems Inc Writing system generating code that differentiates between printing and functional operations
US3381791A (en) * 1965-10-05 1968-05-07 Scm Corp Typewriter carriage control
US3382963A (en) * 1966-08-17 1968-05-14 Ibm Printing apparatus with no-print feature
US3389774A (en) * 1965-10-05 1968-06-25 Scm Corp Typewriter carriage control
US3394791A (en) * 1967-02-16 1968-07-30 Intercontinental Systems Inc Electric typewriter with separate carrier return and indexing mechanism
US3404766A (en) * 1966-09-19 1968-10-08 Ibm Variable spacebar mechanism for automatically operated proportional escapement printer
US3405793A (en) * 1965-03-20 1968-10-15 Grundig Max Magnetic type head actuating arrangement
US3414103A (en) * 1966-03-31 1968-12-03 Epsco Inc Signal responsive and signal generating means for single element print head typewriter
US3422946A (en) * 1966-08-25 1969-01-21 Siemens Ag Keyboard with binary signal generating structure
US3490572A (en) * 1967-10-02 1970-01-20 Singer Co Print head carrier drive structure employing same clutch for carrier return and backspace
US3502187A (en) * 1966-01-11 1970-03-24 Intercontinental Systems Inc Writing system
US3524527A (en) * 1967-11-22 1970-08-18 Ibm Alternate character selection mechanism for typewriters
US3578133A (en) * 1969-01-15 1971-05-11 Ibm Nonrepeat mechanism for keyboard
US3592309A (en) * 1968-12-06 1971-07-13 Ibm Cyclically operable typewriter
US3641262A (en) * 1969-12-29 1972-02-08 Teletype Corp Shift control
US3651914A (en) * 1971-01-22 1972-03-28 Sperry Rand Corp Asynchronous printer
US3666069A (en) * 1969-09-15 1972-05-30 Teletype Corp Ribbon positioning mechanism for telegraph printers
US3687256A (en) * 1970-04-15 1972-08-29 Ncr Co Optical bar code parallel printer
US3739898A (en) * 1971-01-14 1973-06-19 C Rooney Typewrites with single spring to provide letterspacing and printing
JPS4894522A (fr) * 1972-02-25 1973-12-05
US3780845A (en) * 1970-09-04 1973-12-25 Reilly T O Power driven typewriter with single type head
US3788443A (en) * 1971-02-12 1974-01-29 Paillard Sa Character selection and impression control mechanism for typewriter
DE2239117A1 (de) * 1972-08-09 1974-02-28 Triumph Werke Nuernberg Ag Automatische druckkopf-verstellvorrichtung
US3854566A (en) * 1973-05-25 1974-12-17 Xerox Corp Photoelectric tabulating apparatus
US3888339A (en) * 1971-08-07 1975-06-10 Triumph Werke Nuernberg Ag Impression control mechanism for a typewriter or similar machine
US3904015A (en) * 1972-11-07 1975-09-09 Robert E Boyden Power-driven typewriter
US3930569A (en) * 1970-09-04 1976-01-06 Thomas O'Reilly Power driven typewriter with flexible type head
US4014427A (en) * 1973-07-30 1977-03-29 Rines Carol M Variable bottom-edge margin indicator and method for typewriter paper and the like
US4023665A (en) * 1968-11-04 1977-05-17 Boyden Robert E Power driven typewriter
US4058798A (en) * 1970-03-30 1977-11-15 Robert Andrew Nagy Longitudinally extended printing method for computers
US4146337A (en) * 1977-07-01 1979-03-27 Alan Li Electric typewriter for multiple languages
US4332488A (en) * 1979-07-11 1982-06-01 Xelavis S.A. Device for the control of the position of the type carrying element in typewriters
US4462709A (en) * 1980-07-16 1984-07-31 Tokyo Juki Industrial Co., Ltd. Type carrier return and platen line space device for typewriters
US4552474A (en) * 1980-08-11 1985-11-12 Tokyo Juki Industrial Co., Ltd. Backspace device in typewriter

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CN113572326B (zh) * 2021-07-26 2022-06-21 巨力自动化设备（浙江）有限公司 展开式铁芯插纸机

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AT48505B (de) * 1909-03-25 1911-06-10 Alois Poetzl Schreibmaschine mit längs der Schreibwalze verschiebbarem Typenrade.
US2044550A (en) * 1931-02-25 1936-06-16 Teissedre Gustave Typewriter
US2127509A (en) * 1935-07-31 1938-08-23 Burnell Lab Company Inc Typewriting machine
US2661683A (en) * 1948-02-17 1953-12-08 Ibm High speed printing mechanism
US2684745A (en) * 1950-11-21 1954-07-27 Ibm Teletypewriter
US2769029A (en) * 1954-05-27 1956-10-30 Teleprinter Corp Telegraph printer

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AT48505B (de) * 1909-03-25 1911-06-10 Alois Poetzl Schreibmaschine mit längs der Schreibwalze verschiebbarem Typenrade.
US2044550A (en) * 1931-02-25 1936-06-16 Teissedre Gustave Typewriter
US2127509A (en) * 1935-07-31 1938-08-23 Burnell Lab Company Inc Typewriting machine
US2661683A (en) * 1948-02-17 1953-12-08 Ibm High speed printing mechanism
US2684745A (en) * 1950-11-21 1954-07-27 Ibm Teletypewriter
US2769029A (en) * 1954-05-27 1956-10-30 Teleprinter Corp Telegraph printer

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978086A (en) * 1959-10-14 1961-04-04 Ibm Key operated machines
US3038577A (en) * 1960-01-26 1962-06-12 Royal Mcbee Corp Keyboard control and actuating apparatus
US3205996A (en) * 1962-01-24 1965-09-14 Greenwood Joseph Arthur Space computer for justifying typing machine
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US3195707A (en) * 1962-07-16 1965-07-20 Royal Mcbee Corp Keylever signal storing mechanism
US3380569A (en) * 1962-10-02 1968-04-30 Intcrcontiental Systems Inc Writing system generating code that differentiates between printing and functional operations
US3145070A (en) * 1963-01-08 1964-08-18 Milgo Electronic Corp Multiple symbol graphical recorder
US3212616A (en) * 1963-06-07 1965-10-19 Royal Mcbee Corp Space and repeat space bar mechanism for an electric typewriter
US3289804A (en) * 1963-06-14 1966-12-06 Ibm Automatic sequence typing mechanism for printing words upon depression of a single key
US3217850A (en) * 1963-11-21 1965-11-16 Royal Typewriter Co Inc Forward and back spacing mechanism
US3276562A (en) * 1963-12-19 1966-10-04 Ibm Automatic document handling and control apparatus
US3233715A (en) * 1964-04-20 1966-02-08 Invac Corp Transmitter receiver machine employing print sphere typewriter structure
US3317020A (en) * 1964-07-30 1967-05-02 Siemens Ag Keyboard providing different unrelated codes in response to caseshift operation
US3357534A (en) * 1964-07-30 1967-12-12 Siemens Ag Keyboard capable of producing either of two different codes
US3286806A (en) * 1964-09-16 1966-11-22 Olympia Werke Ag Rotatable and tiltable type head control apparatus
US3289805A (en) * 1964-11-27 1966-12-06 Scm Corp Typewriter having typelevers mounted on a rotating member
US3405793A (en) * 1965-03-20 1968-10-15 Grundig Max Magnetic type head actuating arrangement
US3315776A (en) * 1965-04-29 1967-04-25 Scm Corp Office machine with rotary carriage control member
US3300017A (en) * 1965-04-30 1967-01-24 Sperry Rand Corp Electrosensitive printing apparatus with print head continuously moved across paper
US3381791A (en) * 1965-10-05 1968-05-07 Scm Corp Typewriter carriage control
US3389774A (en) * 1965-10-05 1968-06-25 Scm Corp Typewriter carriage control
US3502187A (en) * 1966-01-11 1970-03-24 Intercontinental Systems Inc Writing system
US3311211A (en) * 1966-01-14 1967-03-28 Ibm Keyboard sequence discriminator with different codes for upper and lower case
US3414103A (en) * 1966-03-31 1968-12-03 Epsco Inc Signal responsive and signal generating means for single element print head typewriter
US3382963A (en) * 1966-08-17 1968-05-14 Ibm Printing apparatus with no-print feature
US3422946A (en) * 1966-08-25 1969-01-21 Siemens Ag Keyboard with binary signal generating structure
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements
US3404766A (en) * 1966-09-19 1968-10-08 Ibm Variable spacebar mechanism for automatically operated proportional escapement printer
US3394791A (en) * 1967-02-16 1968-07-30 Intercontinental Systems Inc Electric typewriter with separate carrier return and indexing mechanism
US3490572A (en) * 1967-10-02 1970-01-20 Singer Co Print head carrier drive structure employing same clutch for carrier return and backspace
US3524527A (en) * 1967-11-22 1970-08-18 Ibm Alternate character selection mechanism for typewriters
US4023665A (en) * 1968-11-04 1977-05-17 Boyden Robert E Power driven typewriter
US3592309A (en) * 1968-12-06 1971-07-13 Ibm Cyclically operable typewriter
US3578133A (en) * 1969-01-15 1971-05-11 Ibm Nonrepeat mechanism for keyboard
US3666069A (en) * 1969-09-15 1972-05-30 Teletype Corp Ribbon positioning mechanism for telegraph printers
US3641262A (en) * 1969-12-29 1972-02-08 Teletype Corp Shift control
US4058798A (en) * 1970-03-30 1977-11-15 Robert Andrew Nagy Longitudinally extended printing method for computers
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US3739898A (en) * 1971-01-14 1973-06-19 C Rooney Typewrites with single spring to provide letterspacing and printing
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Also Published As

Publication number Publication date
FR1172051A (fr) 1959-02-05
CH341841A (fr) 1959-10-31
DE1078591B (de) 1960-03-31
GB842327A (en) 1960-07-27

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