GB763427A - Improvements in or relating to electric timepieces - Google Patents

Improvements in or relating to electric timepieces

Info

Publication number
GB763427A
GB763427A GB36887/54A GB3688754A GB763427A GB 763427 A GB763427 A GB 763427A GB 36887/54 A GB36887/54 A GB 36887/54A GB 3688754 A GB3688754 A GB 3688754A GB 763427 A GB763427 A GB 763427A
Authority
GB
United Kingdom
Prior art keywords
balance
armature
electric
gear train
relating
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
GB36887/54A
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.)
Omega Louis Brandt and Frere SA
Original Assignee
Omega Louis Brandt and Frere SA
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 Omega Louis Brandt and Frere SA filed Critical Omega Louis Brandt and Frere SA
Publication of GB763427A publication Critical patent/GB763427A/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

Landscapes

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

Abstract

763,427. Reciprocating electric motors. BRANDT & FRERE SOC. ANON., O. L. Dec. 21, 1954 [Jan. 16, 1954], No. 36887/54. Class 35. [Also in Group XVIII] In an electric timepiece the maintaining circuit of balance 1, Fig. 1, includes an electronic switch, e.g. a transistor 15 connected as shown in Fig. 2 to two coils 12, 13 which co-operate respectively with an armature 9 on the balance 1 and an armature 11 on the disc 10 mounted on the balance staff. The armatures 9, 11 may be magnets or of ferromagnetic material. The gear train to the hands may be driven by a pawl moving with the balance staff or the alternating voltage or pulses delivered by the coil 13 may feed an electric motor which drives said gear train.
GB36887/54A 1955-04-26 1954-12-21 Improvements in or relating to electric timepieces Expired GB763427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH347783T 1955-04-26

Publications (1)

Publication Number Publication Date
GB763427A true GB763427A (en) 1956-12-12

Family

ID=4508131

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36887/54A Expired GB763427A (en) 1955-04-26 1954-12-21 Improvements in or relating to electric timepieces

Country Status (3)

Country Link
CH (1) CH347783A (en)
DE (1) DE1085825B (en)
GB (1) GB763427A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211706B (en) * 1962-08-09 1966-03-03 Max Planck Gesellschaft Electric pulse generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256587B (en) * 1959-12-15 1967-12-14 Reich Robert W Time-keeping electrical device with a rotary transducer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601712A (en) * 1945-02-26 1948-05-11 Hillyard Thomas Stott Improvements relating to apparatus for time measurement
AT133325B (en) * 1931-03-06 1933-05-10 Johann Sampl Electric counter, especially clock.
US2260847A (en) * 1938-05-27 1941-10-28 Warren Telechron Co Vibratory frequency standard
CH213932A (en) * 1939-09-18 1941-03-31 Russenberger Max Mechanical vibrator with control device for limiting a parameter of the vibration.
DE808818C (en) * 1948-06-23 1951-07-19 Jaeger Ets Ed Electric clockwork

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211706B (en) * 1962-08-09 1966-03-03 Max Planck Gesellschaft Electric pulse generator

Also Published As

Publication number Publication date
CH347783A (en) 1960-07-15
DE1085825B (en) 1960-07-21

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