GB2051685A - Mechanism for controlling the striking force and the non- striking in a typewriter - Google Patents

Mechanism for controlling the striking force and the non- striking in a typewriter

Info

Publication number
GB2051685A
GB2051685A GB8030502A GB8030502A GB2051685A GB 2051685 A GB2051685 A GB 2051685A GB 8030502 A GB8030502 A GB 8030502A GB 8030502 A GB8030502 A GB 8030502A GB 2051685 A GB2051685 A GB 2051685A
Authority
GB
United Kingdom
Prior art keywords
striking
controlling
displacement means
typewriter
cams
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.)
Granted
Application number
GB8030502A
Other versions
GB2051685B (en
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.)
Hermes Precisa International SA
Original Assignee
Hermes Precisa International SA
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 claimed from CH132578A external-priority patent/CH618631A5/fr
Application filed by Hermes Precisa International SA filed Critical Hermes Precisa International SA
Publication of GB2051685A publication Critical patent/GB2051685A/en
Application granted granted Critical
Publication of GB2051685B publication Critical patent/GB2051685B/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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/92—Impact adjustment; Means to give uniformity of impression

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)

Abstract

A mechanism for controlling the striking force and the non-striking in a typewriter comprises a driving shaft (4) provided with at least two cams (8, 9) corresponding to different striking forces, a sensor (13) for sensing the profile of these cams transmitting its motion to a printing head (1), displacement means (17, 18) for the sensor (13) and receiving means (20, 40, 41) for the control pulses. With a view to avoiding an important transfer of energy with the control pulses, the mechanism comprises a loaded spring (39) acting on the displacement means (17, 18) that causes them to cooperate with a stop device (34-38). This stop device (34- 38) is controlled in several positions by said receiving means (20, 40, 41). A return device (59, 61) driven by the driving shaft (4) brings back the displacement means (17, 18) in a so-called normal position after each complete rotation of this shaft (4). <IMAGE>
GB8030502A 1978-02-07 1979-02-06 Mechanism for controlling the strikling force and the non-striking in a typewriter Expired GB2051685B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH132578A CH618631A5 (en) 1978-02-07 1978-02-07
EP79900174A EP0010099A1 (en) 1978-02-07 1979-08-28 Mechanism for controlling the striking force and the non-striking in a typewriter

Publications (2)

Publication Number Publication Date
GB2051685A true GB2051685A (en) 1981-01-21
GB2051685B GB2051685B (en) 1982-12-15

Family

ID=25687337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8030502A Expired GB2051685B (en) 1978-02-07 1979-02-06 Mechanism for controlling the strikling force and the non-striking in a typewriter

Country Status (1)

Country Link
GB (1) GB2051685B (en)

Also Published As

Publication number Publication date
GB2051685B (en) 1982-12-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee