GB1347938A - Start/stop mechanism for a balance wheel - Google Patents

Start/stop mechanism for a balance wheel

Info

Publication number
GB1347938A
GB1347938A GB1940072A GB1940072A GB1347938A GB 1347938 A GB1347938 A GB 1347938A GB 1940072 A GB1940072 A GB 1940072A GB 1940072 A GB1940072 A GB 1940072A GB 1347938 A GB1347938 A GB 1347938A
Authority
GB
United Kingdom
Prior art keywords
lever
balance wheel
stop
indentations
wheel
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
GB1940072A
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments 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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1347938A publication Critical patent/GB1347938A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/06—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch
    • G04F7/065—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch with start-stop control arrangements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms

Abstract

1347938 Stop-watches DAINI SEIKOSHA K K 26 April 1972 [7 May 1971] 19400/72 Heading G3T The balance wheel 12 of a stop-watch is stopped by a resilient member 10 on a stop lever 8 engaging one of a plurality of indentations on the periphery of the wheel 12. The indentations may cover the entire periphery or, as shown, only opposite portions 12a, 12b. Stopping is effected by pulling out a winding stem 1 which rotates a setting lever 2 against the action of a spring 6 transmitted by a lever 4. An aperture 2b in lever 2 is engaged by an end 8a of lever 8 which is thus rotated. Upon pressing in of the winding stem, the balance wheel again oscillates. The balance wheel may be electrically maintained and stopped away from its neutral position so that the contact switch remains open:.
GB1940072A 1971-05-07 1972-04-26 Start/stop mechanism for a balance wheel Expired GB1347938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3580771 1971-05-07

Publications (1)

Publication Number Publication Date
GB1347938A true GB1347938A (en) 1974-02-27

Family

ID=12452185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1940072A Expired GB1347938A (en) 1971-05-07 1972-04-26 Start/stop mechanism for a balance wheel

Country Status (2)

Country Link
US (1) US3733805A (en)
GB (1) GB1347938A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6052338A (en) * 1999-04-22 2000-04-18 Shevins; Herbert Wristwatch with an illuminated ornamental display system
ATE390654T1 (en) * 2002-02-01 2008-04-15 Tag Heuer Sa DEVICE WITH CLOCK MOVEMENT AND CHRONOGRAPH MODULE
CH717182B1 (en) 2019-01-23 2023-11-15 Patek Philippe Sa Geneve Timepiece movement comprising a mechanical oscillator and a device for stopping said oscillator.
USD922893S1 (en) * 2019-05-07 2021-06-22 Nivarox-Far Sa Watch component
EP4296793A1 (en) * 2022-06-20 2023-12-27 Montres Breguet S.A. Stop mechanism for stopping or releasing a timepiece or chronograph regulating mechanism wheel

Also Published As

Publication number Publication date
US3733805A (en) 1973-05-22

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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