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GB1338084A - Magnetic escapement - Google Patents

Magnetic escapement

Info

Publication number
GB1338084A
GB1338084A GB5088970A GB5088970A GB1338084A GB 1338084 A GB1338084 A GB 1338084A GB 5088970 A GB5088970 A GB 5088970A GB 5088970 A GB5088970 A GB 5088970A GB 1338084 A GB1338084 A GB 1338084A
Authority
GB
United Kingdom
Prior art keywords
escape wheel
oscillator
rotor
fixed
driving
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
GB5088970A
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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
Priority claimed from JP10869769U external-priority patent/JPS5011413Y1/ja
Priority claimed from JP44093753A external-priority patent/JPS492927B1/ja
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of GB1338084A publication Critical patent/GB1338084A/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
    • G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1502—Escapement

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

1338084 Clock; escapements MATSUSHITA ELECTRIC WORKS Ltd 27 Oct 1970 [15 Nov 1969 18 Nov 1969 21 Nov 1969] 50889/70 Heading G3T A magnetic escapement comprises an escape wheel 3 and an oscillator 1, the coupled parts of the wheel and oscillator having substantially parallel directions of motion and the escape wheel being coupled to a drive-transmitting spring 11. The escape wheel is fixed to a shaft 6 and is driven by a rotor 4 via the spring 11. The rotor is loosely mounted on the shaft 6 which also carries a worm 22 driving a gear train 23, 24. A fixed coil assembly 5 for driving the rotor 4 comprises a detecting coil 27 and a tapped driving coil 28, see Fig. 1B. The coil circuit comprises a driving transistor 29, the base current of which is stabilized by means of a compensating transistor 30 and a temperature sensitive element 33 against fluctuations due to changes of load or ambient temperature. The oscillator 1 is of W-shape and is mounted at its centre of gravity 17 on a support 8 which carries a weight 9 for damping asymmetric vibrations of the oscillator tines. The tines carry a weight 2' and a permanent magnet 2 which cooperates with radial teeth 36 of the escape wheel 3. Adjustment of the clock rate is carried out by means of a screwed rod 35 carrying a magnetic member 34 to influence the magnet 2. For starting, a lever 21 is used to flick a gear 13 fixed to the shaft 6 and a sleeve portion 12' fixed to the rotor 4. An alternative arrangement is envisaged in which the spring 11 is between the escape wheel 3 and the output shaft 6.
GB5088970A 1969-11-15 1970-10-27 Magnetic escapement Expired GB1338084A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10869769U JPS5011413Y1 (en) 1969-11-15 1969-11-15
JP9233969 1969-11-18
JP44093753A JPS492927B1 (en) 1969-11-21 1969-11-21

Publications (1)

Publication Number Publication Date
GB1338084A true GB1338084A (en) 1973-11-21

Family

ID=27307007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5088970A Expired GB1338084A (en) 1969-11-15 1970-10-27 Magnetic escapement

Country Status (4)

Country Link
US (1) US3660737A (en)
DE (1) DE2052941C3 (en)
FR (1) FR2067320B1 (en)
GB (1) GB1338084A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311445C3 (en) * 1973-03-08 1985-03-14 Vdo Adolf Schindling Ag, 6000 Frankfurt Electric clock with single-phase stepper motor
US4332199A (en) * 1980-06-09 1982-06-01 The United States Of America As Represented By The Secretary Of The Navy Electromagnetic arming rate regulator
US5025428A (en) * 1990-12-17 1991-06-18 Wit Jarochowski Electromagnetic escapement for mechanically driven watch or clock
CN1244029C (en) * 2000-04-11 2006-03-01 迪特拉有限公司 Escapements for timepieces

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946183A (en) * 1955-06-14 1960-07-26 Horstmann Magnetics Ltd Self-starting magnetic escapement mechanisms
US3208287A (en) * 1961-10-21 1965-09-28 Jeco Kk Magnetic escapement
US3137122A (en) * 1962-01-04 1964-06-16 Amphenol Borg Electronics Corp Resilient means for driving escape wheel
FR1366980A (en) * 1963-06-10 1964-07-17 Diehl Fa Transistor control amplifier, in particular for application to drive controls for self-adjusting clocks
US3303705A (en) * 1964-03-19 1967-02-14 Bulova Watch Co Inc Attitude compensated electromechanical oscillator
GB1195432A (en) * 1967-05-15 1970-06-17 Horstmann Magnetics Ltd Electromechanical Oscillators

Also Published As

Publication number Publication date
DE2052941A1 (en) 1971-06-09
DE2052941C3 (en) 1974-02-07
FR2067320B1 (en) 1974-03-01
US3660737A (en) 1972-05-02
FR2067320A1 (en) 1971-08-20
DE2052941B2 (en) 1973-07-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee