US3638565A - Print type carrier - Google Patents

Print type carrier Download PDF

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Publication number
US3638565A
US3638565A US820206A US3638565DA US3638565A US 3638565 A US3638565 A US 3638565A US 820206 A US820206 A US 820206A US 3638565D A US3638565D A US 3638565DA US 3638565 A US3638565 A US 3638565A
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US
United States
Prior art keywords
belt
type carrier
carrier members
type
length
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
US820206A
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English (en)
Inventor
John E Drejza
Michael A Hendel
William F Morgan
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
Application granted granted Critical
Publication of US3638565A publication Critical patent/US3638565A/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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/20—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on endless bands or the like

Definitions

  • a type carrier comprises a flexible, toothed timing belt having U-shaped type carrier members which are attached to the belt [56] References Cited by pins through the legs of each member on either side of a UNYTED STATES PATENTS belt tooth and which have flexible supports secured thereto each with a type character at the free end.
  • This invention relates to type carriers for high-speed line printers and it has reference in particular to a flexible timing belt type carrier for a printer.
  • Another object of this invention is to provide for securing to a flexible, toothed timing belt a plurality of type carrier members having a width slightly greater than an integral multiple of the tooth pitch of the belt in its free state.
  • Yet another object of the invention is to provide for placing a toothed timing belt in a predetermined state of tension and then securing thereto a plurality of U-shaped type carrier members having a width equal to or slightly greater than the tooth pitch or an integral multiple of the tooth pitch in its stressed condition.
  • Yet another object of the invention is to have the width of each of a plurality of U-shaped type carrier members secured to a toothed timing belt slightly greater than an integral multiple of the tooth pitch, so that the carriers themselves determine the exact pitch length of the belt.
  • a toothed timing belt is placed on a pair of spaced-apart toothed drive pulleys, and the distance between the pulleys is increased to place the belt in a predetermined state of tension.
  • Type carrier members comprising U-shaped clips having depending flexible type carrying fingers are positioned about the belt and are secured thereto by means of pins which pass through the ends of the clips on either side ofa belt tooth to accurately position the clips.
  • FIG. 1 is a schematic plan view showing a type carrier embodying the invention in one ofits forms.
  • FIG. 2 is an enlarged plan view of one of the type carrier members shown in FIG. 1.
  • FIG. 3 is an enlarged cross sectional view in elevation along the line 33 of FIG. 1, showing a print hammer associated therewith and
  • FIG. 4 is a partial enlarged front elevational view of the type carrier of FIG. 1.
  • a type carrier may comprise generally a flexible, toothed timing belt 12 having a plurality of uniformly spaced teeth 14 along the inner surface and arranged to be mounted on a pair of spaced-apart toothed pulleys 16 and 18.
  • a plurality of type carrier members 20 are secured to the belt for presenting type characters to a plurality of print hammers in FIG. 3 along ,a straight portion of the belt path comprising the print line.
  • the type carrier members 20 are aligned by means of a type carrier guide 22 which extends the length of the print line.
  • the type carrier members 20 comprise generally a U-shaped clip which is positioned about the belt 12 with the two legs projecting rearwardly on opposite sides of the belt 12 defining a uniform open space therebetween which has substantially the same width as the belt.
  • the carrier member is secured to the belt by means of pins 21 which are either positioned in previously drilled spaced-apart holes in the upper and lower legs 20a and 20b of the type carrier members or are pressed through the upper end of lower legs in any well-known manner.
  • the pins 21 are so spaced that they are positioned immediately adjacent to, and in intimate contact with, the opposite sides of a tooth 14 so as to accurately locate the type carrier member relative to a tooth.
  • each of the type carrier members 20 has a plurality of flexible spring fingers 23 secured thereto having raised type characters 24 on the free end formed by swaging or coining or formed separately and secured thereon.
  • the fingers 23 may be secured to the carrier member 20 in any suitable manner being, for example, molded therein when the carrier members 20 are formed.
  • the carrier members 20 may be formed in any suitable manner being, for example, molded from a plastic material such as NYLATRON GS*(*Registered Trademark of Polymer Corp., Reading, Pa.) is a molybdenum sulphide filled type 66 nylon material made by the Polymer Corporation.
  • a metallic reinforcing member 26 may be molded with the body member to provide added strength and dimensional stability.
  • a damping member 19 is secured across the several fingers of each type carrier.
  • a piece of self-adhesive nylon wrapping tape has been used successfully for this purpose. The tape may be positioned on one side of the fingers or may be wrapped around both sides of the group of fingers on each type carrier, as shown.
  • the type carrier member 20 has a depending flange 20c which is positioned in a groove 220 in the type carrier guide 22.
  • the guide 22 may comprise a substantially .l-shaped support extending along the print line and having a relatively long upstanding rear leg 22a which acts as a platen to support the carrier members 20 against the rotating moment caused by the impact of print hammers on the type carrying fingers 23, and provided with a relatively short front leg portion 22b on which the type carrier member 20 rides, and which defines the groove 22c in which the depending flange 20c of the carrier member 20 is positioned.
  • the fingers 23 may be impacted against a document by means of print hammers 25 positioned along the print line, the hammers 25 being, for example, mounted on pivots 27 and actuated by push rods 29.
  • the type carrier members 20 are secured to the toothed timing belt 12 while the belt is stretched under a predetermined tension which is greater than the tension during operation.
  • the width of the carrier members 20 is designed so that in the example shown the width is slightly more than three times the tooth pitch of the belt.
  • the carrier members 20 are mounted on the belt when it is stretched and is in a predetermined stressed condition, so that when the force producing said predetermined tension is removed, the belt contracts and the type carrier members 20 are forced into contact with each other by the belt, and the sum of the lengths of the type carrier members actually determines the pitch or length of the belt. In the operating condition there will exist some tension in the belt, but less than said predetermined tension.
  • a 21 pound force results in an elongation of the belt to a pitch length of approximately 39.5
  • the type carrier members 20 are accurately positioned on the belt 12 by means of the pins 21, which engage opposite sides of a tooth, and are maintained in substantial contact with each other as they pass along the straight portion of their travel opposite the print line.
  • the carrier guide member 22 accurately locates the type carrier members as they pass by the print line, permitting accurate positioning of the type characters 24 in the different print positions in which they are struck by the print hammers which may, as shown, be suitably mounted on pivots 27 and actuated by means of push rods 29.
  • the present invention is not limited to this arrangement, and instead of mounting the type characters 24 on the carrier members 20 by means of spring fingers 23, the type characters 24 may instead by formed separately and mounted on the body of the type carrier 20, being cemented thereto or secured in any other suitable manner as for use in a back printer.
  • the type characters 24 may be molded integrally with the carrier members 20, in which instance it may be more desirable to use a ceramic member instead of the molded plastic, or the carrier member may be manufactured by means of any well-known powdered metal process or the like.
  • the timing belt is shown having teeth on the inside only, it is also possible to use teeth or spaced ribs on the outside which could mate with corresponding grooves on the inside of the type carrier members, if desired.
  • a type carrier comprising a flexible toothed timing belt having a plurality of equally spaced teeth on the inside, said timing belt having a predetermined length in the relaxed state and being stretched to a greater length under a predetermined tension force,
  • type carrier members having said type characters thereon and having spaced apart legs positioned on the belt with said legs extending inwardly on opposite sides of the belt, said type carrier members each having a iength such that the total length of all said type carrier members is greater than the unstretched length of said belt but is substantially equal to the stretched length of said belt under said predetermined tension force so that said type carrier members are forced against each other by said belt when said predetermined tension force is removed and said belt contracts until said type carrier members determine the length of said belt, and
  • securing means comprising a pair of pins one on each side of a tooth said pins being closely positioned against said tooth and passing through said spaced-apart legs.
  • each of said type carrier members having a plurality of flat spring type character bearing fingers secured thereto, said fingers being connected intermediate their ends by damping means.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Belt Conveyors (AREA)
US820206A 1969-04-29 1969-04-29 Print type carrier Expired - Lifetime US3638565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82020669A 1969-04-29 1969-04-29

Publications (1)

Publication Number Publication Date
US3638565A true US3638565A (en) 1972-02-01

Family

ID=25230181

Family Applications (1)

Application Number Title Priority Date Filing Date
US820206A Expired - Lifetime US3638565A (en) 1969-04-29 1969-04-29 Print type carrier

Country Status (5)

Country Link
US (1) US3638565A (enrdf_load_stackoverflow)
CA (1) CA927672A (enrdf_load_stackoverflow)
DE (1) DE2017760A1 (enrdf_load_stackoverflow)
FR (1) FR2043497B2 (enrdf_load_stackoverflow)
GB (1) GB1261485A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747522A (en) * 1970-10-20 1973-07-24 Honeywell Bull Soc Ind Endless type carrier with type fingers connected by an endless strip and interposed viscous damping blocks
US3760719A (en) * 1970-11-10 1973-09-25 Honeywell Bull Type-holder element for {37 on-the-fly{38 {11 printing machine
US3766852A (en) * 1972-05-15 1973-10-23 Gen Electric Rebound motion controlling apparatus
US3774531A (en) * 1971-06-21 1973-11-27 Ibm Print chain assembly for high speed printer
US3890895A (en) * 1973-11-12 1975-06-24 Honeywell Bull Sa Endless type-carrying tape for printing machine
US3915279A (en) * 1973-11-29 1975-10-28 Ibm Printer type element deflection limiter
US3942437A (en) * 1973-06-30 1976-03-09 Citizen Watch Co., Ltd. Chain printer
US3972282A (en) * 1973-10-01 1976-08-03 Data Printer Corporation Type train assembly for printing machines
US4023483A (en) * 1975-12-15 1977-05-17 General Electric Company Type finger improvement
US4027587A (en) * 1975-09-08 1977-06-07 Potter Instrument Company, Inc. Pulley construction for high speed printer belt
US4173183A (en) * 1976-01-16 1979-11-06 Kabushiki Kaisha Suwa Seikosha Line printer character belt
US4489650A (en) * 1977-03-24 1984-12-25 International Business Machines Corporation Type belt printer with antifriction means
WO1993017257A1 (en) * 1992-02-28 1993-09-02 Icl Systems Ab A toothed belt attachment
US6352024B1 (en) 1999-06-03 2002-03-05 Monarch Marking Systems, Inc. Composite printing band and method of making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949665A (en) * 1970-12-04 1976-04-13 Odec Computer Systems, Inc. Belt and carrier for high speed printer

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267661A (en) * 1940-01-13 1941-12-23 Markem Machine Co Tab marking machine
US2936704A (en) * 1958-01-21 1960-05-17 Olympia Werke Ag High speed printing apparatus
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3041964A (en) * 1960-01-11 1962-07-03 Ibm Continuous type belt
US3142249A (en) * 1961-07-20 1964-07-28 Oki Electric Ind Co Ltd Type piece fixing device for high speed belt printer
US3216348A (en) * 1961-10-20 1965-11-09 Clary Corp Hammer timing means in a high speed belt printer
US3224336A (en) * 1964-05-25 1965-12-21 Timothy O Eddins Missile launch release system
US3379126A (en) * 1966-07-08 1968-04-23 Itt Closed loop printing machine and type slug supporting means
US3379125A (en) * 1967-01-25 1968-04-23 Potter Instrument Co Inc Type slug impact control in high speed chain printers
US3402657A (en) * 1965-11-24 1968-09-24 Potter Instrument Co Inc High speed belt printer with printing slug supporting means
US3416442A (en) * 1967-06-20 1968-12-17 Ibm Selective hammer actuating means in chain printers

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267661A (en) * 1940-01-13 1941-12-23 Markem Machine Co Tab marking machine
US2936704A (en) * 1958-01-21 1960-05-17 Olympia Werke Ag High speed printing apparatus
US3041965A (en) * 1958-06-20 1962-07-03 Oki Electric Ind Co Ltd Type members for a high speed printer
US3041964A (en) * 1960-01-11 1962-07-03 Ibm Continuous type belt
US3142249A (en) * 1961-07-20 1964-07-28 Oki Electric Ind Co Ltd Type piece fixing device for high speed belt printer
US3216348A (en) * 1961-10-20 1965-11-09 Clary Corp Hammer timing means in a high speed belt printer
US3224336A (en) * 1964-05-25 1965-12-21 Timothy O Eddins Missile launch release system
US3402657A (en) * 1965-11-24 1968-09-24 Potter Instrument Co Inc High speed belt printer with printing slug supporting means
US3379126A (en) * 1966-07-08 1968-04-23 Itt Closed loop printing machine and type slug supporting means
US3379125A (en) * 1967-01-25 1968-04-23 Potter Instrument Co Inc Type slug impact control in high speed chain printers
US3416442A (en) * 1967-06-20 1968-12-17 Ibm Selective hammer actuating means in chain printers

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747522A (en) * 1970-10-20 1973-07-24 Honeywell Bull Soc Ind Endless type carrier with type fingers connected by an endless strip and interposed viscous damping blocks
US3760719A (en) * 1970-11-10 1973-09-25 Honeywell Bull Type-holder element for {37 on-the-fly{38 {11 printing machine
US3774531A (en) * 1971-06-21 1973-11-27 Ibm Print chain assembly for high speed printer
US3766852A (en) * 1972-05-15 1973-10-23 Gen Electric Rebound motion controlling apparatus
US3942437A (en) * 1973-06-30 1976-03-09 Citizen Watch Co., Ltd. Chain printer
US3972282A (en) * 1973-10-01 1976-08-03 Data Printer Corporation Type train assembly for printing machines
US3890895A (en) * 1973-11-12 1975-06-24 Honeywell Bull Sa Endless type-carrying tape for printing machine
US3915279A (en) * 1973-11-29 1975-10-28 Ibm Printer type element deflection limiter
US4027587A (en) * 1975-09-08 1977-06-07 Potter Instrument Company, Inc. Pulley construction for high speed printer belt
US4023483A (en) * 1975-12-15 1977-05-17 General Electric Company Type finger improvement
US4173183A (en) * 1976-01-16 1979-11-06 Kabushiki Kaisha Suwa Seikosha Line printer character belt
US4489650A (en) * 1977-03-24 1984-12-25 International Business Machines Corporation Type belt printer with antifriction means
WO1993017257A1 (en) * 1992-02-28 1993-09-02 Icl Systems Ab A toothed belt attachment
US5525004A (en) * 1992-02-28 1996-06-11 Icl System Ab Toothed belt attachment
US6352024B1 (en) 1999-06-03 2002-03-05 Monarch Marking Systems, Inc. Composite printing band and method of making same

Also Published As

Publication number Publication date
DE2017760A1 (de) 1970-11-12
GB1261485A (en) 1972-01-26
FR2043497A2 (enrdf_load_stackoverflow) 1971-02-19
CA927672A (en) 1973-06-05
FR2043497B2 (enrdf_load_stackoverflow) 1976-01-16

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