GB1359743A - Apparatus for use in an electrically driven timepiece movement - Google Patents

Apparatus for use in an electrically driven timepiece movement

Info

Publication number
GB1359743A
GB1359743A GB5922471A GB5922471A GB1359743A GB 1359743 A GB1359743 A GB 1359743A GB 5922471 A GB5922471 A GB 5922471A GB 5922471 A GB5922471 A GB 5922471A GB 1359743 A GB1359743 A GB 1359743A
Authority
GB
United Kingdom
Prior art keywords
lever
magnet
balance
dec
pin
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
GB5922471A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1359743A publication Critical patent/GB1359743A/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
    • G04C3/04—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 balance
    • 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
    • G04B15/00—Escapements
    • G04B15/12—Adjusting; Restricting the amplitude of the lever or the like
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1502—Escapement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

1359743 Clocks and watches SUWA SEIKOSHA K K 21 Dec 1971 [28 Dec 1970] 59224/71 Heading G3T In a stepping mechanism for an electric timepiece comprising a pallet lever 45 which is oscillated by a driving balance 30 and advances a ratchet wheel 53, the lever carries a pin 54 of magnetic material which is attracted alternately to the poles of a ring shaped magnet 40 to hold the lever in its extreme positions. The magnet 40 is cut away to provide an arcuate gap 41 which is positioned adjacent an aperture 55 in frame plate 36. The sides of the aperture limit the travel of the lever by arresting the pin 54, but this may alternatively be performed by a separate structure. The magnet 40 is positioned around balance bearing 34 and may be rotated by its ears 60 to equalise the magnetic forces in the two extreme positions of the lever. Frame plate 36 shields the electro-magnetically maintained balance 30 from effects of the magnet 40.
GB5922471A 1970-12-28 1971-12-21 Apparatus for use in an electrically driven timepiece movement Expired GB1359743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970132716U JPS5025188Y1 (en) 1970-12-28 1970-12-28

Publications (1)

Publication Number Publication Date
GB1359743A true GB1359743A (en) 1974-07-10

Family

ID=15087895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5922471A Expired GB1359743A (en) 1970-12-28 1971-12-21 Apparatus for use in an electrically driven timepiece movement

Country Status (6)

Country Link
US (1) US3708974A (en)
JP (1) JPS5025188Y1 (en)
CH (2) CH1898271A4 (en)
DE (1) DE2165083C3 (en)
FR (1) FR2120057B1 (en)
GB (1) GB1359743A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH577211B5 (en) * 1972-12-28 1976-06-30 Ebauches Sa
CH573136B5 (en) * 1974-01-18 1976-02-27 Far Fab Assortiments Reunies
US3899700A (en) * 1974-09-03 1975-08-12 Timex Corp Indexing mechanism for electric watch
DE50115494D1 (en) * 2001-12-15 2010-07-08 Richemont Int Sa Constant-force device
EP1645918A1 (en) * 2004-10-05 2006-04-12 Montres Breguet S.A. Anti-tripping device for timepiece escapement
EP3264198B1 (en) * 2016-07-01 2020-01-15 Montres Breguet S.A. Timepiece comprising a device for switching a mechanism of said timepiece
EP4020100B1 (en) * 2020-12-24 2023-08-16 Montres Breguet S.A. Timepiece including a rotating bezel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061047A (en) * 1932-12-17 1936-11-17 Jr Edmund O Schweitzer Timepiece
US2971324A (en) * 1957-03-16 1961-02-14 Ebauches Sa Lever escapement for timepieces
IT592599A (en) * 1957-07-11
US3059413A (en) * 1959-01-02 1962-10-23 Hamilton Watch Co Pallet fork contacting and indexing means for electric watch
US3122879A (en) * 1959-10-01 1964-03-03 Trick Kuno Motion converter for electrically driven rotary oscillators
US3187126A (en) * 1962-06-28 1965-06-01 Cons Electronics Ind Chronometric governor
DE6807990U (en) * 1968-11-21 1969-08-21 Junghans G M B H Fa Geb CONTINUOUS DEVICE FOR THE WHEELS OF AN ELECTRIC WATCH

Also Published As

Publication number Publication date
DE2165083C3 (en) 1974-08-29
FR2120057B1 (en) 1975-02-21
CH1898271A4 (en) 1975-12-15
JPS5025188Y1 (en) 1975-07-29
FR2120057A1 (en) 1972-08-11
CH575621B5 (en) 1976-05-14
DE2165083A1 (en) 1972-07-20
DE2165083B2 (en) 1974-02-07
US3708974A (en) 1973-01-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee