GB932265A - Synchronised magnetic escapements - Google Patents

Synchronised magnetic escapements

Info

Publication number
GB932265A
GB932265A GB1977961A GB1977961A GB932265A GB 932265 A GB932265 A GB 932265A GB 1977961 A GB1977961 A GB 1977961A GB 1977961 A GB1977961 A GB 1977961A GB 932265 A GB932265 A GB 932265A
Authority
GB
United Kingdom
Prior art keywords
supply
synchronised
magnet
extension
plane
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
GB1977961A
Inventor
Cecil Frank Clifford
John Anthony Henry Key
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.)
Horstmann Gear Co Ltd
Original Assignee
Horstmann Gear Co Ltd
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 Horstmann Gear Co Ltd filed Critical Horstmann Gear Co Ltd
Priority to GB1977961A priority Critical patent/GB932265A/en
Priority to CH638862A priority patent/CH386344A/en
Publication of GB932265A publication Critical patent/GB932265A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
    • G04C5/005—Magnetic or electromagnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

932,265. Clocks. HORSTMANN GEAR CO. Ltd. May 16, 1962 [June 1, 1961], No. 19779/61. Class 139. In order that a magnetic escapement 11, 15, 18 may be synchronized with an A.C. supply, the magnet 15 has an extension 21 which is located in the gap 21 of an electromagnet 23, 24 energized from the supply. In the repose position, the plane of the extension 21 is substantially in or parallel with the plane of the part 23. The magnet may carry a detent to prevent run-away of the escape wheel. The escape wheel is driven by a mainspring which is continuously wound so that on failure of the A.C. supply the escapement assumes complete control. The electromagnet winding may be connected to the supply through a half-wave rectifier.
GB1977961A 1961-06-01 1961-06-01 Synchronised magnetic escapements Expired GB932265A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1977961A GB932265A (en) 1961-06-01 1961-06-01 Synchronised magnetic escapements
CH638862A CH386344A (en) 1961-06-01 1962-05-25 Operating mechanism for a time measuring device, in particular for a pendulum or clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1977961A GB932265A (en) 1961-06-01 1961-06-01 Synchronised magnetic escapements

Publications (1)

Publication Number Publication Date
GB932265A true GB932265A (en) 1963-07-24

Family

ID=10135084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1977961A Expired GB932265A (en) 1961-06-01 1961-06-01 Synchronised magnetic escapements

Country Status (2)

Country Link
CH (1) CH386344A (en)
GB (1) GB932265A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197969A (en) * 1986-10-28 1988-06-02 Seiko Epson Corp Energy storing apparatus, e.g. for use in a timepiece
US20150131413A1 (en) * 2013-11-13 2015-05-14 Eta Sa Manufacture Horlogere Suisse Timepiece comprising a decoupling between the energy transmission means and the counting means

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570870B1 (en) 2011-09-15 2016-04-06 The Swatch Group Research and Development Ltd. Timepiece with permanently coupled oscillators
CH705493B1 (en) 2011-09-15 2019-04-30 Swatch Group Res & Dev Ltd Timepiece with oscillators coupled in chronograph mode.
EP3130966B1 (en) * 2015-08-11 2018-08-01 ETA SA Manufacture Horlogère Suisse Mechanical clockwork provided with a motion feedback system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197969A (en) * 1986-10-28 1988-06-02 Seiko Epson Corp Energy storing apparatus, e.g. for use in a timepiece
GB2197969B (en) * 1986-10-28 1990-05-16 Seiko Epson Corp Energy storing apparatus, e.g. for use in a timepiece
US5151886A (en) * 1986-10-28 1992-09-29 Seiko Epson Corporation Analog electric timepiece using an intermittent driving signal
US20150131413A1 (en) * 2013-11-13 2015-05-14 Eta Sa Manufacture Horlogere Suisse Timepiece comprising a decoupling between the energy transmission means and the counting means
CN104635469A (en) * 2013-11-13 2015-05-20 Eta瑞士钟表制造股份有限公司 Timepiece comprising a decoupling between the means for transmitting power and the counting means

Also Published As

Publication number Publication date
CH386344A (en) 1964-08-14

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