GB1423740A - Electro-mechanical transducer assembly for timing devices - Google Patents

Electro-mechanical transducer assembly for timing devices

Info

Publication number
GB1423740A
GB1423740A GB1661373A GB1661373A GB1423740A GB 1423740 A GB1423740 A GB 1423740A GB 1661373 A GB1661373 A GB 1661373A GB 1661373 A GB1661373 A GB 1661373A GB 1423740 A GB1423740 A GB 1423740A
Authority
GB
United Kingdom
Prior art keywords
coil
pawl
wheel
driving
fixed
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
GB1661373A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1423740A publication Critical patent/GB1423740A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by master-clocks
    • G04C13/08—Slave-clocks actuated intermittently
    • G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1423740 Electric timepieces INTERNATIONAL STANDARD ELECTRIC CORP 6 April 1973 [8 April 1972] 16613/73 Heading G3T An electro-mechanical transducer for a quartz watch comprises an air-cored coil 2 pivotably mounted between permanent magnetic poles 1 and biased by springs 3, 3a to a rest position so that electrical pulses applied to the coil produce displacement thereof against the springs and a driving pawl 10 fixed to the coil engages successive teeth of a ratchet wheel 8 to advance the wheel during return motion of the coil to the rest position, the axis of the ratchet wheel being aligned with but perpendicular to the pivot axis of the coil. As shown the wheel 8 is a crown wheel fixed to a shaft 17 which is supported in a bridge 9 and base plate 4. The base plate also carries a magnetic yoke 6 and bearings for pins 14,14a which form a shaft for the coil. Limits to the oscillation of the coil are set by fixed stops 13 which co-operate with a holder 7 of the pawl 10. A non-return pawl 11 is supported by the yoke 6. Over-driving of the wheel 8 is also prevented by a stop 18 which is abutted by the pawl 10. The pawls may carry pawl jewels (10a, 11a) Fig. 2a (not shown), the jewel (10a) being wedge-shaped at its driving end.
GB1661373A 1972-04-08 1973-04-06 Electro-mechanical transducer assembly for timing devices Expired GB1423740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2216992A DE2216992A1 (en) 1972-04-08 1972-04-08 ELECTROMECHANICAL CONVERTER FOR WATCHES

Publications (1)

Publication Number Publication Date
GB1423740A true GB1423740A (en) 1976-02-04

Family

ID=5841384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1661373A Expired GB1423740A (en) 1972-04-08 1973-04-06 Electro-mechanical transducer assembly for timing devices

Country Status (5)

Country Link
US (1) US3844104A (en)
JP (1) JPS49101064A (en)
CH (2) CH501673A4 (en)
DE (1) DE2216992A1 (en)
GB (1) GB1423740A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2268293B3 (en) * 1974-04-18 1977-02-18 Valroger Pierre

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH228268A4 (en) * 1968-02-16 1971-02-26
CH1022068A4 (en) * 1968-07-09 1971-06-15
US3641761A (en) * 1970-06-17 1972-02-15 Hamilton Watch Co Watch transducer
US3676993A (en) * 1970-08-13 1972-07-18 Hamilton Watch Co Electronic watch

Also Published As

Publication number Publication date
US3844104A (en) 1974-10-29
CH577193B5 (en) 1976-06-30
JPS49101064A (en) 1974-09-25
CH501673A4 (en) 1975-11-14
DE2216992A1 (en) 1973-10-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees