GB1249769A - Device for actuating a printing hammer - Google Patents

Device for actuating a printing hammer

Info

Publication number
GB1249769A
GB1249769A GB36378/70A GB3637870A GB1249769A GB 1249769 A GB1249769 A GB 1249769A GB 36378/70 A GB36378/70 A GB 36378/70A GB 3637870 A GB3637870 A GB 3637870A GB 1249769 A GB1249769 A GB 1249769A
Authority
GB
United Kingdom
Prior art keywords
arm
actuator member
magnetic flux
flux path
magnet
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
GB36378/70A
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB1249769A publication Critical patent/GB1249769A/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
    • B41J9/36—Means for operating hammers to effect impression in which mechanical power is applied under electromagnetic control

Landscapes

  • Impact Printers (AREA)
  • Electromagnets (AREA)

Abstract

1,249,769. Selective printing. NATIONAL CASH REGISTER CO. 28 July, 1970 [25 Aug., 1969], No. 36378/70. Heading B6F. [Also in Division H1]. A print hammer actuator assembly 10 comprises a permanent magnet 18 which normally holds a pivoted actuator member 26 against the force of a spring 36 biasing the actuator member 26 towards an operative position, the magnetic flux path then being via arms 20, 24 of the magnet 18 and arm 28 of the member 26, the actuator member 26 being triggered by generation of a cancelling magnetic field is a coil 42, the magnetic flux path being thereby switched to include the arm 24 and an arm 22 of the magnet 18, and an arm 30 of the member 26. The switching of the magnetic flux path prevents production of stray magnetic fields and rebound of the actuator member 26 after striking the hammer 12. The actuator member 26 is reset by a bail 46. An adjacent assembly may be of an alternative form shown at 52 for compactness.
GB36378/70A 1969-08-25 1970-07-28 Device for actuating a printing hammer Expired GB1249769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85265369A 1969-08-25 1969-08-25

Publications (1)

Publication Number Publication Date
GB1249769A true GB1249769A (en) 1971-10-13

Family

ID=25313895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36378/70A Expired GB1249769A (en) 1969-08-25 1970-07-28 Device for actuating a printing hammer

Country Status (9)

Country Link
US (1) US3630142A (en)
JP (1) JPS504491B1 (en)
BE (1) BE755082A (en)
CA (1) CA921766A (en)
CH (1) CH516851A (en)
DE (1) DE2041789C3 (en)
FR (1) FR2056821A5 (en)
GB (1) GB1249769A (en)
ZA (1) ZA705142B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741113A (en) * 1971-06-25 1973-06-26 Ibm High energy print hammer unit with fast settle out
US3747521A (en) * 1971-06-25 1973-07-24 Ibm Low cost hammer unit
US3874287A (en) * 1973-06-05 1975-04-01 Honeywell Bull Sa Printing machines
US3982622A (en) * 1974-10-04 1976-09-28 Teletype Corporation Actuator mechanisms for wire matrix printers
US3968744A (en) * 1975-03-03 1976-07-13 Burroughs Corporation Self-damping unitary print hammer for high speed printers
JPS54164179U (en) * 1978-05-10 1979-11-17
DE2945622C2 (en) * 1979-11-12 1982-08-19 Hans-Joachim Dipl.-Phys. 6104 Seeheim-Jugenheim Thiel Device for writing Braille
US4493253A (en) * 1983-11-23 1985-01-15 Ncr Canada Ltd. Variable impact printing means
US4703689A (en) * 1985-09-20 1987-11-03 International Business Machines Corporation Two lever print actuator with aligned pivots and energy transfer surfaces
DE3715304A1 (en) * 1987-05-08 1988-12-01 Protechno Entwicklungsbuero Gm NEEDLE PRINT HEAD WITH FOLDING ARM MAGNET AND CONTROL PROCEDURE DAFUER

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483658A (en) * 1945-12-18 1949-10-04 Price Electric Corp Polarized electromagnetic relay
BE512812A (en) * 1951-08-10
US2740057A (en) * 1952-05-13 1956-03-27 Bosch Gmbh Robert Electromagnetic prime movers
US3153178A (en) * 1959-12-14 1964-10-13 Cons Electrics Ind Corp Magnetic lock-up relay
US3049990A (en) * 1960-12-20 1962-08-21 Ibm Print hammer actuator
DE1198455B (en) * 1961-04-28 1965-08-12 Siemens Ag Electromagnetic relay with adhesive characteristics

Also Published As

Publication number Publication date
DE2041789C3 (en) 1973-01-04
BE755082A (en) 1971-02-01
CA921766A (en) 1973-02-27
FR2056821A5 (en) 1971-05-14
ZA705142B (en) 1971-04-28
DE2041789A1 (en) 1971-04-22
US3630142A (en) 1971-12-28
JPS504491B1 (en) 1975-02-20
DE2041789B2 (en) 1972-06-08
CH516851A (en) 1971-12-15

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