GB1219253A - Hammer arrangement for high speed printers - Google Patents

Hammer arrangement for high speed printers

Info

Publication number
GB1219253A
GB1219253A GB05783/69A GB1578369A GB1219253A GB 1219253 A GB1219253 A GB 1219253A GB 05783/69 A GB05783/69 A GB 05783/69A GB 1578369 A GB1578369 A GB 1578369A GB 1219253 A GB1219253 A GB 1219253A
Authority
GB
United Kingdom
Prior art keywords
hammer
actuator
electromagnet
rubber cushion
causing
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
Application number
GB05783/69A
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.)
Creed and Co Ltd
Original Assignee
Creed and Co Ltd
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 Creed and Co Ltd filed Critical Creed and Co Ltd
Publication of GB1219253A publication Critical patent/GB1219253A/en
Expired legal-status Critical Current

Links

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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/38—Electromagnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Impact Printers (AREA)

Abstract

1,219,253. Selective printing. CREED & CO. Ltd. 26 March, 1969 [3 April, 1968], No. 15783/69. Heading B6F. [Also in Division H1] A hammer mechanism used either for impression or selection has the duration of the impact shortened by using a lost motion connection between the hammer and its actuator. The hammer actuator has its motion reversed whilst the hammer continues to move forward under its own momentum, and when the amount of lost motion in the connection has been taken up, collision between the hammer and its actuator causes a rapid and sudden withdrawal of the hammer. Hammer impression.-In Figs. 1 and (3), the hammer 1 is mounted on a pair of beryllium springs 7 and the L-shaped actuator 2 is pivoted at 9 to the base 6. Energization of the electromagnet 3 attracts the armature 10 attached to the actuator, thereby causing it to pivot and propel the hammer towards the continuously moving type 11. The actuator comes into contact with a fixed rubber cushion 4, from which it rebounds. Collision then occurs between faces F 1 and F 2 causing the hammer 1 to have a sudden reversal of movement, thereby shortening the duration of impact. In (Fig. 3), the rubber cushion 4 is mounted for adjustment between the poles of the electromagnet 3. The position of the actuator with respect to the electromagnet is adjusted with a screw 13 in the base 6. Type lever selection.-In Fig. 4, the hammer mechanism utilized for selecting the type levers mounted on a continuously rotating basket comprises an electromagnet housing 20 containing a coil 21, a guidance sleeve 31 and an actuator 22 composed of a lower portion 23 and a terminal portion 24. Portion 24 is enclosed within the cushion housing 25 containing a rubber cushion 26. A hammer 28 is retained in its neutral position in contact at 27 with the actuator 22 by a spring 29. Energization of the electromagnet causes the actuator to move upwards until it comes into contact with the rubber cushion 26, whereafter the hammer 28 continues to move under its own momentum. The actuator rebounds so that faces F 1 and F 2 collide, causing the hammer to have a sudden reversal of movement.
GB05783/69A 1968-04-03 1969-03-26 Hammer arrangement for high speed printers Expired GB1219253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71860368A 1968-04-03 1968-04-03

Publications (1)

Publication Number Publication Date
GB1219253A true GB1219253A (en) 1971-01-13

Family

ID=24886723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB05783/69A Expired GB1219253A (en) 1968-04-03 1969-03-26 Hammer arrangement for high speed printers

Country Status (5)

Country Link
US (1) US3504623A (en)
BE (1) BE730966A (en)
CH (1) CH495589A (en)
DE (1) DE1916794A1 (en)
GB (1) GB1219253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153919A (en) * 1974-11-07 1976-05-12 Nippon Electric Co Shiriarupurintaano injihanmaakiko
JPS5845776A (en) * 1981-09-11 1983-03-17 神鋼電機株式会社 Small vibrator
EP0402073A1 (en) * 1989-06-08 1990-12-12 Ing. C. Olivetti & C., S.p.A. Striker device for printers

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2010623A1 (en) * 1968-06-11 1970-02-20 Sits Soc It Telecom Siemens
US3780648A (en) * 1969-09-02 1973-12-25 Nortec Computer Devices High speed print hammer with dynamic damper means
BE757078A (en) * 1969-10-06 1971-03-16 Ncr Co PROCESS FOR BONDING A METAL PART AND A MOLDED POLYMERIC MATERIAL
US3585927A (en) * 1969-12-22 1971-06-22 Ibm Pivotally mounted high performance print magnet
US3696739A (en) * 1970-05-04 1972-10-10 American Regital Corp Striking apparatus for rotating wheel printer
US3726213A (en) * 1970-12-07 1973-04-10 Singer Co Print hammer with high repetition rate
US3768403A (en) * 1971-11-08 1973-10-30 Tally Corp High speed printer with leaflike impact means
US3893390A (en) * 1972-05-01 1975-07-08 Honeywell Inf Systems Printer with rectilinear type-carrying belt
US3823667A (en) * 1972-07-03 1974-07-16 Teletype Corp Force adjustment in impact printers
JPS5211807B2 (en) * 1972-12-27 1977-04-02
US3994381A (en) * 1973-04-26 1976-11-30 The Singer Company Wire matrix print head
NL157521B (en) * 1973-10-18 1978-08-15 Nederlanden Staat DEVICE FOR APPLYING A CODE ON A DOCUMENT.
US3924725A (en) * 1974-06-28 1975-12-09 Ibm Dual array disc printer
US3968744A (en) * 1975-03-03 1976-07-13 Burroughs Corporation Self-damping unitary print hammer for high speed printers
DE2629592C2 (en) * 1976-07-01 1986-04-17 Ibm Deutschland Gmbh, 7000 Stuttgart Print hammer for type printers
DE2954495C2 (en) * 1979-02-26 1989-04-20 Aeg Olympia Ag, 2940 Wilhelmshaven, De
DE2907456A1 (en) * 1979-02-26 1980-09-04 Olympia Werke Ag Hammer unit for typewriter with character disc - is adjusted for pressure and motion by ink ribbon cartridge to adapt to different ribbons
US4242004A (en) * 1979-03-21 1980-12-30 Extel Corporation Dot matrix printhead driver
CA1139988A (en) * 1979-07-23 1983-01-25 Sean K. O'brien Self-aligning spring actuator hammer mechanism
JPS5770681A (en) * 1980-10-21 1982-05-01 Ricoh Co Ltd Hammering device for printer
US4557192A (en) * 1981-05-26 1985-12-10 International Business Machines Corporation Self restoring pivoting means and print hammer using same
IT8721782A0 (en) * 1987-09-02 1987-09-02 Honeywell Bull Spa AERODYNAMIC DAMPER FOR PRESS ACTUATOR.
US4852481A (en) * 1988-07-14 1989-08-01 L. James Hubbard Print hammer mechanism

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787210A (en) * 1953-01-22 1957-04-02 Jr Francis H Shepard Hammer impelling means in high speed printers
DE1203512B (en) * 1956-02-14 1965-10-21 Olympia Werke Ag Device for data and command transmission
US3144821A (en) * 1960-10-06 1964-08-18 Ibm Printer apparatus having print force control
US3183830A (en) * 1960-12-27 1965-05-18 Rca Corp Print registration control means in high speed printers
FR1317862A (en) * 1961-10-20 1963-05-08
US3166010A (en) * 1962-05-03 1965-01-19 Potter Instrument Co Inc Return spring bumper for print hammers
US3145650A (en) * 1962-12-03 1964-08-25 Burroughs Corp Recording apparatus
US3188946A (en) * 1962-12-31 1965-06-15 Ibm Hammer control mechanism for record marking machine
US3200739A (en) * 1963-03-18 1965-08-17 Potter Instrument Co Inc Print hammer modules for high speed printers
US3266419A (en) * 1964-08-11 1966-08-16 Navigation Computer Corp High speed impact print hammer assembly with resilient energy storing means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5153919A (en) * 1974-11-07 1976-05-12 Nippon Electric Co Shiriarupurintaano injihanmaakiko
JPS5737472B2 (en) * 1974-11-07 1982-08-10
JPS5845776A (en) * 1981-09-11 1983-03-17 神鋼電機株式会社 Small vibrator
EP0402073A1 (en) * 1989-06-08 1990-12-12 Ing. C. Olivetti & C., S.p.A. Striker device for printers

Also Published As

Publication number Publication date
US3504623A (en) 1970-04-07
CH495589A (en) 1970-08-31
BE730966A (en) 1969-10-03
DE1916794A1 (en) 1969-10-30

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