GB920635A - Second hand drive for electrically driven timepieces - Google Patents

Second hand drive for electrically driven timepieces

Info

Publication number
GB920635A
GB920635A GB10873/59A GB1087359A GB920635A GB 920635 A GB920635 A GB 920635A GB 10873/59 A GB10873/59 A GB 10873/59A GB 1087359 A GB1087359 A GB 1087359A GB 920635 A GB920635 A GB 920635A
Authority
GB
United Kingdom
Prior art keywords
electrically driven
hand drive
march
balance
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
GB10873/59A
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.)
Durowe A G
Original Assignee
Durowe A G
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 Durowe A G filed Critical Durowe A G
Publication of GB920635A publication Critical patent/GB920635A/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
    • G04C3/06—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 using electromagnetic coupling between electric power source and balance
    • G04C3/065—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 using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • 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
    • G04C3/04—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
    • G04C3/06—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 using electromagnetic coupling between electric power source and balance
    • G04C3/065—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 using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G04C3/069—Driving circuits using a single coil for detection and driving purposes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)

Abstract

920,635. Electric clocks. DUROWE A.G. March 31, 1959 [March 28, 1958], No. 10873/59. Class 139. In an electric watch the balance 17, Fig. 1, is maintained in oscillation by a circuit including two fixed permanent magnets 82, 84, a coil 80 carried by the balance and two transistors 102, 106, Fig. 4. The circuit elements are in a container 120, Fig. 1, within the watch case. An impulse pin 16 steps-on the ratchet wheel 20 rigid with a star wheel 22 which drives the seconds wheel 25. Spring-loaded detents 41, 51 prevent reverse rotation of the gears 20, 25. The detent 41 may be replaced by an adjustable permanent magnet.
GB10873/59A 1958-03-28 1959-03-31 Second hand drive for electrically driven timepieces Expired GB920635A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0027748 1958-03-28

Publications (1)

Publication Number Publication Date
GB920635A true GB920635A (en) 1963-03-13

Family

ID=7039387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10873/59A Expired GB920635A (en) 1958-03-28 1959-03-31 Second hand drive for electrically driven timepieces

Country Status (4)

Country Link
US (1) US3058293A (en)
CH (1) CH343912A (en)
FR (1) FR1219452A (en)
GB (1) GB920635A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266236B (en) * 1960-03-15 1968-04-11 Siemens Ag Arrangement for driving mechanical vibration systems
US3090245A (en) * 1960-11-16 1963-05-21 Hamilton Watch Co Indexing mechanism for a battery operated electric watch
US3340687A (en) * 1965-08-13 1967-09-12 Novikov Mikhail Fedorovich Device for intermittent motion of second hand
DE1523854B2 (en) * 1965-09-29 1970-01-15 The United States Time Corp., Middlebury, Conn. (V.St.A.) Switching device for step-by-step switching of a hand-driving wheel of a clock
CH604223B5 (en) * 1969-11-20 1978-08-31 Ssih Societe Suisse Pour L Ind
US3896682A (en) * 1973-11-07 1975-07-29 Metall Invent Sa Measuring/indicating instrument
US20230315023A1 (en) * 2020-07-30 2023-10-05 Montres Breguet S.A. Sympathetic timepiece assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195311A (en) * 1936-11-27 1940-03-26 Gen Electric Novelty pendulum mechanism
US2353280A (en) * 1943-04-30 1944-07-11 Murray T Swisher Means for computing measurement
US2662366A (en) * 1951-10-19 1953-12-15 Hamilton Watch Co Electric watch
US2865163A (en) * 1952-04-15 1958-12-23 Elgin Nat Watch Co Electrically-powered time device
US2845772A (en) * 1953-03-10 1958-08-05 Ebauches Sa Electric watch
CH312742A (en) * 1953-10-08 1956-02-29 Ebauches Sa Timepiece with instantaneous seconds mechanism

Also Published As

Publication number Publication date
FR1219452A (en) 1960-05-18
CH343912A (en) 1959-12-31
US3058293A (en) 1962-10-16

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