GB993658A - Printing hammer assembly - Google Patents
Printing hammer assemblyInfo
- Publication number
- GB993658A GB993658A GB14026/64A GB1402664A GB993658A GB 993658 A GB993658 A GB 993658A GB 14026/64 A GB14026/64 A GB 14026/64A GB 1402664 A GB1402664 A GB 1402664A GB 993658 A GB993658 A GB 993658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shank
- hammer
- support members
- magnetic field
- base
- 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
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
-
- 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
- B41J9/02—Hammers; Arrangements thereof
- B41J9/10—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Impact Printers (AREA)
Abstract
993,658. Selective printing. DATA PRODUCTS CORPORATION. April 6, 1964 [May 13, 1963], No. 14026/64. Heading B6F. Typewheel machines; hammer impression arrangements.-A high speed line-by-line selective printer having a continuously rotatable type wheel 10 is provided with a hammer assembly stack 14, Fig. 1, comprising a plurality of hammer assemblies 18, one for each character in a line, each assembly 18 including a magnetic coil 50 mounted on the hammer shank 24 for generating a first magnetic field, a pair of permanent magnets 54, 56 mounted on a base 20 for establishing a second magnetic field to interact with the first magnetic field to move the shank relative to the base, the shank being connected to the base by a pair of resilient support members 26 and 28. The support members 26 and 28 are electrically conductive and extend through sleeves 30 and terminate adjacent a terminal block 38 which includes a plurality of conductors 44 separated by insulative spacers 42 of connector screw block 46 is fixedly mounted adjacent the block 38 to force the terminal portions of the support members 26, 28 into electrical contact with the conductors 44, the support member intermediate their ends are secured in aligned V-notches 32 of base plate 20 by a holding screw block 34. The upper terminal portions of the support members 26, 28 are potted in a rubber or epoxy material 90, Fig. 4, which secures them in receptacles 74 on the lower side of the hammer shank 24, which may be formed of low mass material, e.g. aluminium, either end 70 or 72 being capable of use as an impact tip. The shank 24 has a central opening 76 having secured therein the magnetic coil 50, whose terminals 60, 62 are soldered to the support members 26, 28. Consequently, when an electrical potential is applied across the support members 26, 28, by selectively applying such a potential to the conductors 44, the current flowing through the coil establishes a magnetic field which interacts with the magnetic field of the permanent magnets 54, 56, Fig. 3, encompassing the shank 24 and the coil 50, whereby the shank is impelled towards the type wheel 10. The shank is restored by the resilience of the support members 26, 28 which are coated with a rubber or epoxy film 88 to quickly damp out any vibrations set up by the shank 24 being bounced back against the locating screw 68 in a block 64. To compactly package the hammer assemblies 18 in the assembly stack 14 a first group hammer assemblies 18 is dependently supported from a base plate 22 while a second group is supported on the base plate 20 such that the first and second groups are interleaved. In addition, to space the hammer assemblies very closely the coils 50 are placed at three different points along the shank 24 (Fig. 2, not shown), and the permanent magnet pairs 54, 56 are mounted in three rows on bars 58, Fig. 1. Dust excluders.-The base plates 20, 22 and bars 58 are provided with holes 59 to permit air to flow through the hammer assembly stack 14, Fig. 1, for cooling purposes and the holes permit also the use of pressurized air to exclude dust which may introduce frictional effects.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US279710A US3172352A (en) | 1963-05-13 | 1963-05-13 | Printing hammer assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
GB993658A true GB993658A (en) | 1965-06-02 |
Family
ID=23070099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14026/64A Expired GB993658A (en) | 1963-05-13 | 1964-04-06 | Printing hammer assembly |
Country Status (4)
Country | Link |
---|---|
US (1) | US3172352A (en) |
FR (1) | FR1399006A (en) |
GB (1) | GB993658A (en) |
NL (1) | NL140071B (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3289575A (en) * | 1964-01-08 | 1966-12-06 | Datamark Inc | High speed printer hammer assembly |
US3301177A (en) * | 1964-01-29 | 1967-01-31 | Shepard Lab Inc | Hammer firing arrangement for high speed printer |
US3282203A (en) * | 1964-04-16 | 1966-11-01 | Burroughs Corp | Magnetically operated print hammers in high speed printers |
US3351006A (en) * | 1964-06-11 | 1967-11-07 | Honeywell Inc | Print hammer having braking means |
DE1264120B (en) * | 1964-07-25 | 1968-03-21 | Ibm Deutschland | Print hammer mechanism and procedure for adjusting its magnet yokes |
US3334409A (en) * | 1964-09-01 | 1967-08-08 | Honeywell Inc | Method of flexure mounting print hammers |
US3285166A (en) * | 1964-12-18 | 1966-11-15 | Data Products Corp | High speed print hammer and bar magnet means |
US3279361A (en) * | 1965-01-04 | 1966-10-18 | Data Products Corp | Print hammer positioning means employing high velocity gas stream directed against hammer |
DE1287833B (en) * | 1965-06-11 | 1969-01-23 | ||
NL131643C (en) * | 1965-08-02 | |||
US3473466A (en) * | 1966-03-24 | 1969-10-21 | Friden Inc | Electrostrictive print hammer actuator in high speed printers |
US3477365A (en) * | 1966-07-22 | 1969-11-11 | Mohawk Data Sciences Corp | Hysteresis drive for high speed print hammers |
US3354820A (en) * | 1966-08-26 | 1967-11-28 | Honeywell Inc | Print hammer supporting spring assembly and method of making same |
US3460469A (en) * | 1966-12-30 | 1969-08-12 | Ibm | Print hammer actuator |
US3386378A (en) * | 1967-04-24 | 1968-06-04 | Scm Corp | Electromagnetic control means for print hammers |
US3447455A (en) * | 1967-09-20 | 1969-06-03 | Honeywell Inc | Print-hammer mount and fabrication method |
US3618514A (en) * | 1969-06-24 | 1971-11-09 | Mohawk Data Sciences Corp | Apparatus for producing incremental movement, particularly for moving a print hammer module parallel to a print line |
BE755410A (en) * | 1969-08-29 | 1971-03-01 | Philips Nv | PUNCHING HAMMER FOR PRINTER |
BE757078A (en) * | 1969-10-06 | 1971-03-16 | Ncr Co | PROCESS FOR BONDING A METAL PART AND A MOLDED POLYMERIC MATERIAL |
US3656425A (en) * | 1970-03-20 | 1972-04-18 | Information Printing Systems C | Electromagnetic actuating means for print hammer |
US3696739A (en) * | 1970-05-04 | 1972-10-10 | American Regital Corp | Striking apparatus for rotating wheel printer |
US3802546A (en) * | 1971-06-18 | 1974-04-09 | Data Products Corp | Web clamping apparatus |
US3780650A (en) * | 1971-12-20 | 1973-12-25 | Ibm | Print hammer with moving coil |
US3811377A (en) * | 1973-01-02 | 1974-05-21 | Ibm | Impact printer |
US4200043A (en) * | 1974-04-05 | 1980-04-29 | Canon Kabushiki Kaisha | Printer hammer assembly |
US3982622A (en) * | 1974-10-04 | 1976-09-28 | Teletype Corporation | Actuator mechanisms for wire matrix printers |
CH612523A5 (en) * | 1975-06-30 | 1979-07-31 | Svenska Dataregister Ab | |
US4046244A (en) * | 1975-08-06 | 1977-09-06 | Sycor, Inc. | Impact matrix print head solenoid assembly |
US4014258A (en) * | 1975-08-29 | 1977-03-29 | Wassermann Carl I | High speed printing apparatus |
AU2466077A (en) * | 1976-05-19 | 1978-11-02 | Gen Electric | Stacked blade matrix printer heads |
FR2385534A1 (en) * | 1977-03-28 | 1978-10-27 | Decision Data Computer Corp | Electromechanically operated printing hammer - has flexible spring to move hammers in parallel paths to strike copy band |
US4493568A (en) * | 1983-02-22 | 1985-01-15 | Estabrooks David A | Dot matrix printhead employing moving coils |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072045A (en) * | 1958-06-02 | 1963-01-08 | Bull Sa Machines | Triggering electronic devices for the control of electromagnetic actuating devices |
US3049990A (en) * | 1960-12-20 | 1962-08-21 | Ibm | Print hammer actuator |
NL289885A (en) * | 1961-05-01 |
-
1963
- 1963-05-13 US US279710A patent/US3172352A/en not_active Expired - Lifetime
-
1964
- 1964-04-06 GB GB14026/64A patent/GB993658A/en not_active Expired
- 1964-04-20 NL NL646404268A patent/NL140071B/en unknown
- 1964-05-13 FR FR974377A patent/FR1399006A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL140071B (en) | 1973-10-15 |
FR1399006A (en) | 1965-05-14 |
NL6404268A (en) | 1964-11-16 |
US3172352A (en) | 1965-03-09 |
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