US3037448A - Print ribbon feed mechanism - Google Patents

Print ribbon feed mechanism Download PDF

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Publication number
US3037448A
US3037448A US98964A US9896461A US3037448A US 3037448 A US3037448 A US 3037448A US 98964 A US98964 A US 98964A US 9896461 A US9896461 A US 9896461A US 3037448 A US3037448 A US 3037448A
Authority
US
United States
Prior art keywords
ribbon
pawl
print
feed mechanism
reels
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
US98964A
Other languages
English (en)
Inventor
Edwin O Blodgett
Harold F Stiffler
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.)
Commercial Controls Corp
Original Assignee
Commercial Controls 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 NL276404D priority Critical patent/NL276404A/xx
Priority to NL133673D priority patent/NL133673C/xx
Application filed by Commercial Controls Corp filed Critical Commercial Controls Corp
Priority to US98964A priority patent/US3037448A/en
Priority to US98963A priority patent/US3082687A/en
Priority to GB42361/61A priority patent/GB966040A/en
Priority to FR887370A priority patent/FR1324940A/fr
Priority to DEC26549A priority patent/DE1279984B/de
Application granted granted Critical
Publication of US3037448A publication Critical patent/US3037448A/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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/51—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means
    • B41J33/518—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means the reversing-feeler engaging buttons or the like secured to the ribbon near its ends
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/24—Print head assemblies serial printer type
    • 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/54—Ribbon-feed devices or mechanisms for ensuring maximum life of the ribbon
    • B41J33/58—Ribbon fed angularly

Definitions

  • lt is -an additional object of the invention to provide a print ribbon feed mechanism particularly suited for use with a character wire printer and one having a relatively sturdy yet low cost construction exhibiting high reliability of operation with minimized care and service attention over prolonged operational periods.
  • FIG.1 illustrates in plan view a print ribbon feed mechanism embodying the present invention and constructed in assembly with a character wire printer structure and a tape punch structure;
  • FIG. 2 illustrates in end elevational view, and FIG. 3 in back elevational View, the FIG. l structure;
  • FIG. 4 is an elevational View illustrating more clearly the construction of the print ribbon feed mechanism of the present invention, FIG. 5 being a fragmentary plan View taken along the plane 5-5 of FIG. 4;
  • FIGS. 6 and 7 are fragmentary views illustrating two phases of the operation of the feed reversing structure utilized in the ribbon feed mechanism of the present invention.
  • FIG. 8 is a fragmentary plan view illustrating the relative arrangement of certain feed reversing structural components in the position which they are shown as occupying in FIG. 7.
  • a ribbon feed mechanism used with a character wire printer and embodying the present invention is conveniently constructed as an assembly fabricated with the wire printer upon a casting 10 ⁇ aixed by machine screws (not shown) upon the back casting 11 of a unitary tape punch unit having the construction shown in FIGS. 8412 of the United States Blodgett Patent No. 2,927,158.
  • the printer casting 10 is precisely positioned on the back casting 11 of the tape punch by lconventional use of locating pins, not shown.
  • the tape punch also includes a front casting 12 iixedly secured in spaced relation to the back casting 111.
  • the various components which make up the punch structure are supported on or between the back casting 11 and front casting 12, and brieiiy considered for purposes of the present description include a pin wheel 13 supported upon a shaft 14 and rotatable manually by a knob 15 or mechanically by a ratchet wheel and pawl 16 of which the pawl is reciprocated once during each punch cycle.
  • a manually actuated hold down plate 17, pivotally supported upon the casting 11, permits tape to be manually placed in the punch and maintains the feed holes of the tape in engagement with the teeth of the pin wheel 13 to effect step by stepy movement of the tape past the punch die and punch pins positioned beneath a pl-astic housing 18 cooperating with a chute 18a to remove the punch chaff.
  • the punch structure is mechanically driven through each of successive punch cycles by each complete rotation of a power shaft 19 connected through a exible coupling 20y and a cycle control clutch (not shown) to an electric drive motor.
  • the power shaft 19 is journalled in ball bearing raceways supported by the casting 10 of the Wire printer assembly and by the front casting 12 of the punch assembly, and effects actuation o-f the punch pins under control of individual electromagnets supported within a frame 21 as more fully shown and described in the aforementioned Blodgett patent. Electrical connections to the electromagnets are effected through a plugboard 22 having paired receptacles in order that a common electrical connection may be made to an individual electromagnet within the frame 2
  • the punch structure includes Aa top plate 23 over which the tape passes in its movement past the punch station.
  • the printer includes a nose-shaped print wire guide 24 which has formed internally thereof a plurality of converging curvilinear channels through which individual ones of plural print wires are supported and guided into a cluster thereof at the print zone lying bneath the end 25 of the wire guide 24 which has a small spacing from a tape lying on the plate 23.
  • a ribbon impregnated with printing ink or other suitable print medium is guided by rolls 26, 27, and 28 between supply and take up reels 29 and 30 and moves between the ends of the print wires and the upper surface of a tape moved step by step over the top surface of the plate 23. Characters are thus printed by the print wires on the upper surface of the tape in spaced relation to the punching of a corresponding binary coded character at the punch station of the punch unit.
  • the wire printer assembly is essentially comprised by three principal subassemblies: a code-plate retaining and actuating subassembly 34 which includes the print Wire guide 24, a code translator subassembly 35 for horizontally positioning the code plate of the subassembly 34, and a code translator subassembly 35 similar in construction to the translator subassembly 35 and operating vertically to position the code plate of the subassembly 34.
  • a code-plate retaining and actuating subassembly 34 which includes the print Wire guide 24, a code translator subassembly 35 for horizontally positioning the code plate of the subassembly 34, and a code translator subassembly 35 similar in construction to the translator subassembly 35 and operating vertically to position the code plate of the subassembly 34.
  • the printing ribbon transport assembly has the construction shown -in FIGS. 4-8 and is assembled on a casting 38 which is secured by machine screws and loeating pins (neither shown) to the casting 10 of the wire printer.
  • Each of the ribbon supply and take up -reels 29 and 30 is removably supported by conventional spring detents (not shown) on stud shafts 39 journ-alled for rotation in the casting 38.
  • the shafts 39 have integral reel support flanges 40 fixed to the shaft and Carrying pins 41 for engagement in an aperture of the reels 29 and 39 for positive drive thereof by respective ratchet wheels 43 and 44 also iixed to the shafts 39.
  • the print-ing ribbon 45 extends from the reel 29 over the guide pulleys 26 and 27 and then is guided beneath a guide plate 46 slotted at 47 to receive the end 25 of the print wire guide 24.
  • the end 48 of the guide plate 46 is turned over and slotted to receive and guide the printing ribbon.
  • the guide plate 46 is retained by a knurled and slotted screw 49 on a bar 50 supported on the punch structure in spaced relation to the tape platform 23.
  • the guide plate 46 has a handle 51 so that it may be manually grasped and moved to a forward position where the printing ribbon may be threaded under it after which it is repositioned and fixed in place on the bar 50 by the thumb screw 49.
  • the bar 50 also supports a guide plate 52, which is secured to the bar by machine screw 53 and serves in conjunction with the guide plate 46 to guide the printing ribbon 45 from the printing Zone beneath the end of the Wire guide 24 past the guide roller 28 and onto the reel 30.
  • the printing ribbon is advanced step by step past the printing zone just preceding each printing operation.
  • the code translator subassemblies and 35' are reset by a reset lever 55 (FIG. 3) actuated by a cam 56 fixed to the drive shaft 19.
  • the reset lever is fixed to a shaft 57, which is journalled in the casting 10 and is thus rotated by the reset lever and moves a crank arm 58 (FIG. 4) also fixed to the shaft 57.
  • the arm 58 has a pin 59 which engages a slot 60 in a link member 61, a spring 62 extending between a pin 63 on the member 61 and a pin 64 on the casting 38 maintaining the pin 59 in contact with one end of the slot 60.
  • the link member 61 is pivotally connected by a pin 65 to one arm of a bell crank 66 rotatably supported on a stud shaft 67 of the casting 38.
  • the other arm of the bell crank 66 is connected through a pin 68 to a pawl 69 having 4a turned over end 70 bevelled to engage the teeth of either the ratchet wheel 44 or the ratchet wheel 43.
  • An overcenter spring 71 extending between a pin 72 of the casting 38 and a pin 80 on the pawl 69, maintains the bevelled end of the pawl 69 in engagement either with the teeth of the ratchet wheel 44 or valternatively with the teeth of the ratchet wheel 43.
  • a detent pawl 73 is pivotally supported on a stud shaft 74 of the casting 3S, has oppositely disposed side projections 75 and 76 turned over at their ends to anchor helical springs 77 and 78, and has an aperture 79 through which the pin 80 on the pawl 69 may extend to anchor the ends of both of the helical springs 77 and 78.
  • the detent pawl 73 has a turned over end 83 bevelled to engage the teeth of either the ratchet wheel 44 or the ratchet wheel 43, and the interconnection by the springs 77 and 78 of the pawls 69 and 73 enables the overcenter spring 71 to maintain the bevelled ends of both pawls in engagement with the teeth of the ratchet wheel 44 or 43 while yet permitting relative longitudinal reciprocal movement of the pawl 69 with respect to the pawl 73.
  • the printing ribbon 45 is provided with a metal eyelet 84 near each of its ends. As the ribbon becomes nearly exhausted on the reel 29, the eyelet 84 engages a pair of studs 85 ⁇ and 86 provided on a lever 87 pivoted on a stud shaft 88 of the base casting 38. The next few feed steps of the ribbon 45 cause the eylet 84 to move the lever 87 clockwise as seen in FIG. 4, the angular movement of the lever being eventually completed by an overcenter spring 89 having one end anchored on a pin 90 of the casting 38 and having its other end anchored on a pin 91 of the lever 87.
  • the lever S7 also has a pair of studs 85 and 86 at its lower end for engagement with the eyelet (not shown) provided at the other end of the ribbon 45 to effect counterclockwise movement of the lever 87 when the ribbon, while feeding from the reel 30 to the reel 29, becomes nearly exhausted on the reel 30.
  • These clockwise and counterclockwise movements of the lever 87 are limited 'by ⁇ a stop pin 92 provided on the lever 87 and engaging a U-shaped stop bracket 93 secured to the base casting 38.
  • a yoke 94 is pivotally secured by a pin 95 to the lever 87 and has a cylindrical end 96 bored and internally threaded to receive the threaded end of a link rod 97.
  • the latter is provided with a flattened and hooked end portion which is pivotally anchored in an aperture 98 of an anvil 99 supported for reciprocatory movement in a groove 100 provided in a guide member 101 secured by machine screws 102 to a stud 103 on the base casting 38.
  • the anvil 99 is retained in the groove 100 by a hold-down member 104 having a turned over end extending into a groove 105 of the anvil 99.
  • the ribbon feed is thereupon changed from the ratchet wheel 44 to the ratchet wheel 43, and the ribbon 45 now feeds from the reel 30 to the reel 29.
  • the lever 87 is eventually moved counterclockwise by engagement of the ribbon eyelet with the studs 85 and 86 as previously explained, the anvil 99 is moved to the right as seen in FIGS. 4-7.
  • a projection 108 provided on the side of the feed pawl 69 opposite the projection 106 engages the upper surface 109 of the anvil 99.
  • Further counterclockwise drive of the bell crank 66 forces the pawl 69 to move clockwise about its pivot 68, and this effects restoration of the pawls 69 and 73 to the positions shown in FIGS. 4 and 6 where their respective beveled ends 70 and 83 engage the teeth of the ratchet wheel 44.
  • the ribbon 45 now feeds from the supply reel 29 to the supply reel 30.
  • a ribbon feed mechanism embodying the invention has a relatively sturdy yet low cost construction and provides a very reliable character of automatically reversible ribbon feed operation needing minimum care and attention over prolonged operational periods.
  • a print ribbon feed mechanism for a character printer comprising, a pair of ribbon reels rotatably supported with associated drive ratchet wheels in adjacent but spaced positions, means for guiding a print ribbon for movement between said reels and past a character-print zone, a pawl pivotally supported on an arm of a rotatably supported bell crank for reciprocal motion with relation to a pivoted detent member resiliently coupled thereto to move angularly therewith between two angular positions in individual ones of which said pawl and detent member are based to engage the teeth of an individual one of said ratchet wheels, means responsive to each character printing operation for angularly reciprocating said bell crank to reciprocate said pawl and rotatably drive the one of said ratchet wheels engaged thereby, whereby said print ribbon is moved by successive-step motion past said print zone and from the then idle to the then driven one of said reels, said pawl having oppositely disposed projections at the region of the pivot point thereof, a longitudinally movable anvil member having
  • a print ribbon feed mechanism for a character printer comprising, a pair of ribbon reels rotatably supported with associated drive ratchet wheels in adjacent but spaced positions, means for guiding a print ribbon jfor movement between said reels and past a characterprint zone, a pawl pivotally supported on an arm of a rotatably supported bell crank for reciprocal motion with angular movement of said bell crank and for angular motion about its pivot point between two angular positions in individual ones of which said pawl is biased by an overcenter spring to engage the teeth of an individual one of said ratchet wheels, a pivoted detent member spring coupled to said pawl to be angularly moved thereby to two positions in which said detent member also is biased by said spring coupling into engagement with the teeth of the same ratchet wheel as is engaged by said pawl, means responsive to each character printing operation for angularly reciprocating said bell crank to reciprocate said pawl and rotatably drive the one of said ratchet wheels engaged thereby, where
  • a print ribbon feed mechanism for a character printer comprising, a pair of ribbon reels rotatably supported with associated drive ratchet wheels in adjacent but spaced positions, means for guiding a print ribbon for movement between said reels and past a character-print zone, said ribbon having a metallic insert near each end to indicate the approach of a corresponding end of the ribbon, a pawl pivotally supported for reciprocal motion with relation to a pivoted detent member resiliently coupled thereto to move angularly therewith between two angular positions in individual ones of which said pawl and detent member are biased to engage the teeth of an individual one of said ratchet wheels, means responsive to each character printing operation for reciprocating said pawl rotatably to drive the one of said ratchet wheels engaged thereby and move said print ribbon by successivestep motion past said print zone and from the then idle to the then driven one of said reels, a reciprocal anvil member having two anvil portions engageable by individual ones of two projections provided on said pawl on opposite sides of and substantially aligne
  • a print ribbon feed mechanism for a character printer comprising, a pair of ribbon reels rotatably supported with associated drive ratchet wheels in adjacent but spaced positions, means for guiding a print ribbon for movement between said reels and past a character-print zone, said ribbon having an eyelet insert near each end to indicate the approach of a corresponding end of the ribbon, a pawl pivotally supported on an arm of a rotatably supported bell crank for reciprocal motion with relation to a pivoted detent member resiliently coupled by oppositely disposed helical springs to said pawl to move angularly therewith between two angular positions in individual ones of which said pawl and detent member are biased by an over-center spring to engage the teeth of an individual one of said ratchet wheels, means responsive to each character printing operation for angularly reciprocating said bell crank to reciprocate said pawl and rotatably drive the one of said ratchet wheels engaged thereby, whereby said print ribbon is moved by successive-step motion past said print zone and from the then

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Transmission Devices (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
US98964A 1961-03-28 1961-03-28 Print ribbon feed mechanism Expired - Lifetime US3037448A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL276404D NL276404A (de) 1961-03-28
NL133673D NL133673C (de) 1961-03-28
US98964A US3037448A (en) 1961-03-28 1961-03-28 Print ribbon feed mechanism
US98963A US3082687A (en) 1961-03-28 1961-03-28 Character wire printer
GB42361/61A GB966040A (en) 1961-03-28 1961-11-27 Character wire printer
FR887370A FR1324940A (fr) 1961-03-28 1962-02-08 Appareil à imprimer les caractères à commande par fils
DEC26549A DE1279984B (de) 1961-03-28 1962-03-22 Einstellvorrichtung fuer eine in zwei zueinander senkrechten Richtung verschiebbare Codeplatte fuer den Druckkopf eines Drahtdruckers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98964A US3037448A (en) 1961-03-28 1961-03-28 Print ribbon feed mechanism
US98963A US3082687A (en) 1961-03-28 1961-03-28 Character wire printer

Publications (1)

Publication Number Publication Date
US3037448A true US3037448A (en) 1962-06-05

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ID=26795308

Family Applications (2)

Application Number Title Priority Date Filing Date
US98964A Expired - Lifetime US3037448A (en) 1961-03-28 1961-03-28 Print ribbon feed mechanism
US98963A Expired - Lifetime US3082687A (en) 1961-03-28 1961-03-28 Character wire printer

Family Applications After (1)

Application Number Title Priority Date Filing Date
US98963A Expired - Lifetime US3082687A (en) 1961-03-28 1961-03-28 Character wire printer

Country Status (5)

Country Link
US (2) US3037448A (de)
DE (1) DE1279984B (de)
FR (1) FR1324940A (de)
GB (1) GB966040A (de)
NL (2) NL133673C (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752290A (en) * 1971-03-29 1973-08-14 Itt Advanced mechanism for inked ribbons or the like
US3786906A (en) * 1971-07-19 1974-01-22 Copal Co Ltd Printing ribbon feeding mechanism in a printer
US3910399A (en) * 1972-07-19 1975-10-07 Suwa Seikosha Kk Reversible ink ribbon feed device having unitary bulk sensors
DE3026415A1 (de) * 1979-07-25 1981-02-12 Xelavis Sa Vorrichtung zur fortbewegung und bewegungsumkehr eines farbbandes an schreibmaschinen und hierfuer geeignete farbband- kassette
US20050100379A1 (en) * 2003-11-06 2005-05-12 Citizen Watch Co., Ltd. Ribbon takeup device and printer with ribbon takeup device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426880A (en) * 1967-04-14 1969-02-11 Friden Inc Serial character matrix page printer
PT1228208E (pt) * 1999-10-28 2010-10-12 Agensys Inc 36p6d5: antigénio tumoral secretado

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937145A (en) * 1930-07-14 1933-11-28 Speedaumat Mfg Company Printing machine
US2505991A (en) * 1946-05-31 1950-05-02 Rca Corp Ribbon feed device
US2691342A (en) * 1954-10-12 Johnston etaj

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524127A (en) * 1946-11-06 1950-10-03 Ibm Printing character forming wires
US2669178A (en) * 1947-08-13 1954-02-16 Ibm Record controlled printing means
FR1066856A (de) * 1951-05-22 1954-06-10
US2730040A (en) * 1951-11-08 1956-01-10 Ibm High speed multiple character wire printer
US2720164A (en) * 1952-01-26 1955-10-11 Remington Rand Inc Dot printing interpreter
US2757604A (en) * 1953-08-26 1956-08-07 Burroughs Corp Decoding and character forming means for high speed recorder
US2785627A (en) * 1953-10-07 1957-03-19 Ibm Wire printer
US2881697A (en) * 1955-11-23 1959-04-14 Ibm Character positioning means in wire printers
US2884852A (en) * 1956-05-22 1959-05-05 Ibm Printer carriage control means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691342A (en) * 1954-10-12 Johnston etaj
US1937145A (en) * 1930-07-14 1933-11-28 Speedaumat Mfg Company Printing machine
US2505991A (en) * 1946-05-31 1950-05-02 Rca Corp Ribbon feed device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752290A (en) * 1971-03-29 1973-08-14 Itt Advanced mechanism for inked ribbons or the like
US3786906A (en) * 1971-07-19 1974-01-22 Copal Co Ltd Printing ribbon feeding mechanism in a printer
US3910399A (en) * 1972-07-19 1975-10-07 Suwa Seikosha Kk Reversible ink ribbon feed device having unitary bulk sensors
DE3026415A1 (de) * 1979-07-25 1981-02-12 Xelavis Sa Vorrichtung zur fortbewegung und bewegungsumkehr eines farbbandes an schreibmaschinen und hierfuer geeignete farbband- kassette
US20050100379A1 (en) * 2003-11-06 2005-05-12 Citizen Watch Co., Ltd. Ribbon takeup device and printer with ribbon takeup device
US7168871B2 (en) * 2003-11-06 2007-01-30 Citizen Watch Co., Ltd. Ribbon takeup device and printer with ribbon takeup device
CN1323849C (zh) * 2003-11-06 2007-07-04 西铁城时计株式会社 卷带装置及具备卷带装置的打印机

Also Published As

Publication number Publication date
FR1324940A (fr) 1963-04-26
NL133673C (de)
DE1279984B (de) 1968-10-10
GB966040A (en) 1964-08-06
US3082687A (en) 1963-03-26
NL276404A (de)

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