GB1180130A - Electric Timepiece. - Google Patents

Electric Timepiece.

Info

Publication number
GB1180130A
GB1180130A GB21076/67A GB2107667A GB1180130A GB 1180130 A GB1180130 A GB 1180130A GB 21076/67 A GB21076/67 A GB 21076/67A GB 2107667 A GB2107667 A GB 2107667A GB 1180130 A GB1180130 A GB 1180130A
Authority
GB
United Kingdom
Prior art keywords
balance wheel
width
electric
transducer
oscillations
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
GB21076/67A
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 GB1180130A publication Critical patent/GB1180130A/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
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • G04C3/068—Driving circuits with distinct detecting and driving coils provided with automatic control
    • 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
    • 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
    • G04C3/042—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 mechanical coupling
    • 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
    • G04C3/067—Driving circuits with distinct detecting and driving coils

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1,180,130. Clocks and watches. SUWA SEIKOSHA K.K. May 5, 1967 [May 10, 1966], No.21076/67. Heading G3T. An electric timepiece comprises a balance wheel to which energy for starting and maintaining mechanical oscillations is imparted by a driving coil in a transducer, and an electric circuit for energizing the transducer with electric pulses the width of which, when starting the oscillations, is substantially greater than the width when the oscillations of the balance wheel are maintained in a stable state, said circuit including a detecting coil which detects the speed of the balance wheel. The transducer illustrated in Fig.1 comprises a lever 4 rotatable to and fro by an impulse pin 3 and a balance 1, and a magnet 6 rotatable with the lever 4 in gap in a yoke 11 of ferromagnetic material carrying drive and detecting coils 12, 13 arranged in an electric circuit as illustrated in Fig. 5. This is an astable oscillating circuit which oscillates, when the balance wheel is not oscillating, to generate electric pulses the width of which is dependent upon the charging time of a condenser 26 via a resistor 27, but which width is reduced when the balance wheel attains a predetermined amplitude to generate an induced voltage in the coil 13 which reduces the charging time of the condenser 26. Other circuits are described in which the coils 12, 13 are differently arranged.
GB21076/67A 1966-05-10 1967-05-05 Electric Timepiece. Expired GB1180130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2929666 1966-05-10

Publications (1)

Publication Number Publication Date
GB1180130A true GB1180130A (en) 1970-02-04

Family

ID=12272265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21076/67A Expired GB1180130A (en) 1966-05-10 1967-05-05 Electric Timepiece.

Country Status (4)

Country Link
US (1) US3481138A (en)
CH (2) CH495005A (en)
DE (1) DE1673763B2 (en)
GB (1) GB1180130A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1574569A4 (en) * 1969-10-22 1971-03-31
JPS4828711B1 (en) * 1969-11-17 1973-09-04
US3736740A (en) * 1971-10-22 1973-06-05 Novox Inc Electromagnetic timing mechanism
JPS4938668A (en) * 1972-08-10 1974-04-10

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986683A (en) * 1956-07-26 1961-05-30 Hatot Leon Ets Driving balance-wheels more particularly applicable to timing instruments

Also Published As

Publication number Publication date
DE1673763B2 (en) 1972-02-17
CH495005A (en) 1970-04-30
CH639367A4 (en) 1970-04-30
DE1673763A1 (en) 1971-05-27
US3481138A (en) 1969-12-02

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