GB1033342A - Tuning fork timepiece - Google Patents

Tuning fork timepiece

Info

Publication number
GB1033342A
GB1033342A GB2571764A GB2571764A GB1033342A GB 1033342 A GB1033342 A GB 1033342A GB 2571764 A GB2571764 A GB 2571764A GB 2571764 A GB2571764 A GB 2571764A GB 1033342 A GB1033342 A GB 1033342A
Authority
GB
United Kingdom
Prior art keywords
elements
disc
magnetic
magnetic elements
permanent 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
GB2571764A
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.)
Jeco Corp
Original Assignee
Jeco Corp
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 Jeco Corp filed Critical Jeco Corp
Publication of GB1033342A publication Critical patent/GB1033342A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/107—Controlling frequency or amplitude of the oscillating system
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1,033,342. Clocks and watches. JECO KABUSHIKI KAISHA. June 22, 1964 [July 14, 1963 (2); Dec. 5, 1963], No. 25717/64. Heading G3T. A timepiece comprises an arcuate elastic vibrating member 2<1>, Figs. 1 and 3 (not shown), having a permanent magnet 6 secured to each tip, a rotary disc or escape wheel 12 arranged so that its outer annular regions can rotate between the magnetic poles of each permanent magnet, the annular region comprising an inner and an outer set of discrete magnetic elements 18 and 17 respectively, uniformly spaced around corresponding circles, the radial axes of the inner elements 18 being equally spaced between the radial axes of the elements 17, so that, when the member 2<1> is vibrating and the disc is rotating at synchronous speed each permanent magnet attracts successive magnetic elements to rotate the disc at synchronous speed. The disc 12 may be formed from non-magnetic material supporting the magnetic elements, or it can be punched from magnetic material in the shape of spokes, forming the inner magnetic elements, and supporting a rim, which supports teeth forming the outer magnetic elements. The rim adjacent one side of each tooth can be omitted.
GB2571764A 1963-07-14 1964-06-22 Tuning fork timepiece Expired GB1033342A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3833963 1963-07-14
JP3833863 1963-07-14
JP9086963 1963-12-05

Publications (1)

Publication Number Publication Date
GB1033342A true GB1033342A (en) 1966-06-22

Family

ID=27289793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2571764A Expired GB1033342A (en) 1963-07-14 1964-06-22 Tuning fork timepiece

Country Status (3)

Country Link
CH (1) CH885064A4 (en)
DE (1) DE1523929B2 (en)
GB (1) GB1033342A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2166739C3 (en) * 1971-06-24 1988-10-20 Kabushiki Kaisha Suwa Seikosha, Tokio/Tokyo Quartz crystal wristwatch with an electromechanical converter
US4437768A (en) * 1980-04-11 1984-03-20 Citizen Watch Company Limited Movement structure for an electronic timepiece

Also Published As

Publication number Publication date
DE1523929A1 (en) 1970-03-05
CH885064A4 (en) 1966-06-30
DE1523929B2 (en) 1972-06-08

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