GB1380289A - Timepieces - Google Patents

Timepieces

Info

Publication number
GB1380289A
GB1380289A GB5297572A GB5297572A GB1380289A GB 1380289 A GB1380289 A GB 1380289A GB 5297572 A GB5297572 A GB 5297572A GB 5297572 A GB5297572 A GB 5297572A GB 1380289 A GB1380289 A GB 1380289A
Authority
GB
United Kingdom
Prior art keywords
wheel
indicator
seconds
time
pinion
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
GB5297572A
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 Koki KK
Original Assignee
Seiko Koki 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 Seiko Koki KK filed Critical Seiko Koki KK
Publication of GB1380289A publication Critical patent/GB1380289A/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
    • G04C3/001—Electromechanical switches for setting or display
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
    • G04B19/21—Drums

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

1380289 Setting electric clocks SEIKO KOKI KK 16 Nov 1972 [19 Nov 1971] 52975/72 Heading G3T In a timepiece driven by an electric motor and having a plurality of time indicators e.g. digit wheels, in order to permit accurate setting of the indicator of the smallest time units e.g. a seconds wheel, there is provided a manually operable means for preventing further advance of said time indicator after it has reached a predetermined position, e.g. zero seconds, and means for interrupting the drive to the indicator at this time. As shown, seconds wheel 1 is attached to a gear 2 which is normally driven by a pinion 4 and carries a projection 7. A lever 8 is pivoted at 10 and normally biased by a spring 12 against a stop 11 but may be manually rotated so that a catch 9 thereon enters the path of projection 7 to stop the wheel I at zero seconds indication. The synchronous driving motor can continue to rotate as shaft 5 of the pinion 4 can slip in slot 6 against a bias spring (not shown). The drive to the wheel 1 may alternatively be interrupted by a friction clutch which is mechanically or electrically controlled by the displacement of the shaft 5, or the displacement may open a switch in the motor circuit. Such a switch may also be controlled by the catch 9 Fig. 3 (not shown).
GB5297572A 1971-11-19 1972-11-16 Timepieces Expired GB1380289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46092911A JPS4858870A (en) 1971-11-19 1971-11-19

Publications (1)

Publication Number Publication Date
GB1380289A true GB1380289A (en) 1975-01-08

Family

ID=14067650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5297572A Expired GB1380289A (en) 1971-11-19 1972-11-16 Timepieces

Country Status (5)

Country Link
US (1) US3797227A (en)
JP (1) JPS4858870A (en)
DE (1) DE2256569A1 (en)
FR (1) FR2160606B1 (en)
GB (1) GB1380289A (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2198632A (en) * 1936-03-28 1940-04-30 Mullan William Evans Clock synchronizing and setting device
IT454384A (en) * 1948-07-09
FR1042565A (en) * 1948-07-09 1953-11-02 Ibm Direct reading secondary clock
DE824471C (en) * 1948-11-06 1951-12-10 Adolf Martin Automatic reset for pocket and wrist watches

Also Published As

Publication number Publication date
JPS4858870A (en) 1973-08-17
US3797227A (en) 1974-03-19
DE2256569A1 (en) 1973-05-24
FR2160606B1 (en) 1976-06-04
FR2160606A1 (en) 1973-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee