GB1236360A - Horological instruments incorporating electrical oscillation generators - Google Patents

Horological instruments incorporating electrical oscillation generators

Info

Publication number
GB1236360A
GB1236360A GB2356370A GB2356370A GB1236360A GB 1236360 A GB1236360 A GB 1236360A GB 2356370 A GB2356370 A GB 2356370A GB 2356370 A GB2356370 A GB 2356370A GB 1236360 A GB1236360 A GB 1236360A
Authority
GB
United Kingdom
Prior art keywords
frequency
oscillator
lower frequency
electrical oscillation
oscillation generators
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
GB2356370A
Inventor
John Henry Shelley
Thomas Ralph Heeks
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB2356370A priority Critical patent/GB1236360A/en
Publication of GB1236360A publication Critical patent/GB1236360A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C11/00—Synchronisation of independently-driven clocks
    • G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
    • G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
    • G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1,236,360. Electric timepieces. SMITHS INDUSTRIES Ltd. June 12, 1968, No.23563/70. Divided out of 1,205,753. Heading G3T. An electric timepiece comprises a crystal controlled high frequency electrical oscillator, at least one lower frequency electrical oscillator, time indicating means driven by actuating means having a rotary motion of a speed having a fixed relationship to the frequency of the lower frequency oscillator or the lower frequency oscillator having the lowest frequency, and a number of frequency controllers equal to the number of lower frequency oscillators, each frequency controller maintaining the frequency of a lower frequency oscillator at a fixed fraction of the frequency of the oscillator having the adjacent higher frequency, and each frequency controller generating signals to adjust the lesser of the two adjacent frequencies. The timepiece particularly described is as disclosed in Specification 1, 205, 753.
GB2356370A 1968-06-12 1968-06-12 Horological instruments incorporating electrical oscillation generators Expired GB1236360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2356370A GB1236360A (en) 1968-06-12 1968-06-12 Horological instruments incorporating electrical oscillation generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2356370A GB1236360A (en) 1968-06-12 1968-06-12 Horological instruments incorporating electrical oscillation generators

Publications (1)

Publication Number Publication Date
GB1236360A true GB1236360A (en) 1971-06-23

Family

ID=10197699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2356370A Expired GB1236360A (en) 1968-06-12 1968-06-12 Horological instruments incorporating electrical oscillation generators

Country Status (1)

Country Link
GB (1) GB1236360A (en)

Similar Documents

Publication Publication Date Title
GB1427162A (en) Synchronous motors
GB1361230A (en) Electric watches
GB1545922A (en) Method for controlling frequency of electrical oscillations and frequency standard for electronic timepiece
ES344858A1 (en) Electrical oscillation generators
GB1138818A (en) Improvements in or relating to watch movements
US3660766A (en) Sinusoidal waveform generator
GB1236360A (en) Horological instruments incorporating electrical oscillation generators
GB1297267A (en)
GB1343330A (en) Electric timepieces
JPS53129570A (en) Crystal oscillator circuit
JPS5391649A (en) Bias voltage generator
JPS543487A (en) Thin-type crystal oscillator
GB1400101A (en) Electronic oscillator circuit for a timepiece
FR2216613B3 (en)
FR2331080A1 (en) ELECTRONIC WATCH
GB1138819A (en) Improvements in or relating to oscillating devices for time-keeping apparatus
JPS522257A (en) Triangular wave signal generating apparatus
GB1083392A (en) Spark erosion apparatus
ES322105A1 (en) Frequency synthesizers including provisions for the precise electrical control of a variable oscillator
FR2194998B3 (en)
JPS5227665A (en) Electronic timepiece
GB1434604A (en) Timing pulse circuit arrangmeents for timepieces
GB1450237A (en) Electric timepieces
JPS5285858A (en) Watch with calculator
GB1113157A (en) Improvements in or relating to crystal controlled oscillation generators