GB949511A - Improvements in typewriting apparatus - Google Patents

Improvements in typewriting apparatus

Info

Publication number
GB949511A
GB949511A GB17580/61A GB1758061A GB949511A GB 949511 A GB949511 A GB 949511A GB 17580/61 A GB17580/61 A GB 17580/61A GB 1758061 A GB1758061 A GB 1758061A GB 949511 A GB949511 A GB 949511A
Authority
GB
United Kingdom
Prior art keywords
platen
stop
arm
shaft
printing
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
GB17580/61A
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.)
DIMENSIONS Inc
Original Assignee
DIMENSIONS Inc
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 DIMENSIONS Inc filed Critical DIMENSIONS Inc
Publication of GB949511A publication Critical patent/GB949511A/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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • B41J1/40—Carriers swinging for impression
    • 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
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S400/00—Typewriting machines
    • Y10S400/901—Continuously rotating type-head

Landscapes

  • Handling Of Sheets (AREA)
  • Impact Printers (AREA)

Abstract

949,511. Typewriters. DIMENSIONS Inc. May 15, 1961 [June 10, 1960], No. 17580/61. Heading B6F. In. a typewriter of the kind comprising a constantly-rotating typewheel 14 and a platen 12, one of which is moved towards the other at key-selected times for printing, a resilient stop 43 of a material which has a high modulus of elasticity compared to that of the platen is engaged by an arm carrying the movable member at the moment the selected type contacts the platen and causes the type face to move away from the platen after printing at a greater rate than the platen surface returns to normal, blurring thus being prevented. As shown, the typewheel is mounted on a shaft 17 carried by arms 18, 19, freely pivoted on a shaft 23 driven by a motor 25 and coupled to the shaft 17 by gearing 29, 30. An electrically-operated clutch 32, 34 is energized at selected times to couple the arm 18 to the shaft 23 for printing, such selection being effected under control of a keyboard 38 by a brush 37 on the shaft 17 moving over a commutator 36 as described in U.S.A. Specification 2,675,108. The gearing 29, 30 is such that the combined pivotal movement of the arms 18, 19 and rotary movement of the wheel 14 causes a selected type to be moving perpendicularly to the platen at the moment of impact. The impinging of the arm 18 on the stop 43 causes the type face to be moved quickly away from the platen. In the retracted position of the typewheel, the arm 18 is held against a stop 40 by a spring 41. As shown, the stop 43 comprises a slotted strip. A modified type-selecting arrangement comprises an electromagnet or permanent magnet normally energized to hold the arm 18 in retracted position against the action of a compressed spring, but de-energized by the operation of keys through suitable circuitry to allow the typewheel to move towards the platen under the action of the spring in order to effect printing. The spring may be in tension when printing takes place so that its action assists the action of the stop 43 to cause rebound. A modified stop, Fig. 5 (not shown), includes means for adjusting the resilience of the stop and the point of impact of the arm 18 with the stop. The arm 19 may be fixed and the shaft 17 in two parts which are connected by a universal joint.
GB17580/61A 1960-06-10 1961-05-15 Improvements in typewriting apparatus Expired GB949511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35156A US3077256A (en) 1960-06-10 1960-06-10 Typewriting apparatus with constantly rotating type disc

Publications (1)

Publication Number Publication Date
GB949511A true GB949511A (en) 1964-02-12

Family

ID=21880998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17580/61A Expired GB949511A (en) 1960-06-10 1961-05-15 Improvements in typewriting apparatus

Country Status (6)

Country Link
US (1) US3077256A (en)
CH (1) CH375380A (en)
DE (1) DE1239711B (en)
FR (1) FR1291396A (en)
GB (1) GB949511A (en)
NL (1) NL111882C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878782A (en) * 1973-04-13 1975-04-22 Delphos R Coffelt Imprinting machine and method of operation
JPS5715970A (en) * 1980-07-03 1982-01-27 Seiko Epson Corp Serial printer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE471256C (en) * 1929-01-30 Vorm Seidel & Naumann Ag Type lever bearing with used buffer ring for typewriters
DE235957C (en) *
US1458125A (en) * 1921-11-05 1923-06-12 Remington Typewriter Co Typewriting machine
US1553765A (en) * 1924-01-25 1925-09-15 Machina Mij Vor Handel En Ind Typewriting machine
CH109322A (en) * 1924-05-02 1925-03-16 Scherbius & Ritter Electric typewriter.
DE730121C (en) * 1940-03-10 1943-01-07 Triumph Werke Nuernberg Akt Ge Bounce ring for typewriter lever
US2328638A (en) * 1941-01-30 1943-09-07 Ibm Printing mechanism
US2675108A (en) * 1949-10-21 1954-04-13 Ruderfer Martin Typing mechanism with constantly rotating type wheel
CH291530A (en) * 1951-03-22 1953-06-30 Paillard Sa Electric machine controlled by keyboard.
NL173263B (en) * 1952-06-18 Air Liquide METHOD FOR THE REMOVAL OF CYANIDES FROM WASTE WATER.
NL91172C (en) * 1952-12-06
US2799221A (en) * 1955-09-02 1957-07-16 Olivetti Corp Of America Printing mechanism
US2940385A (en) * 1957-04-01 1960-06-14 Anelex Corp High speed printer
US2981178A (en) * 1958-03-07 1961-04-25 Daystrom Inc Print wheel stop

Also Published As

Publication number Publication date
US3077256A (en) 1963-02-12
CH375380A (en) 1964-02-29
NL111882C (en)
FR1291396A (en) 1962-04-20
DE1239711B (en) 1967-05-03

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