US3375652A - Electro-mechanical watch - Google Patents

Electro-mechanical watch Download PDF

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Publication number
US3375652A
US3375652A US539952A US53995266A US3375652A US 3375652 A US3375652 A US 3375652A US 539952 A US539952 A US 539952A US 53995266 A US53995266 A US 53995266A US 3375652 A US3375652 A US 3375652A
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US
United States
Prior art keywords
battery
electro
watch
centre
oscillator
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 - Lifetime
Application number
US539952A
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English (en)
Inventor
Hetzel Max
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.)
Centre Electronique Horloger SA
Original Assignee
Centre Electronique Horloger 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 Centre Electronique Horloger SA filed Critical Centre Electronique Horloger SA
Application granted granted Critical
Publication of US3375652A publication Critical patent/US3375652A/en
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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
    • G04C3/101—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 constructional details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B33/00—Calibers
    • 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
    • G04C3/008—Mounting, assembling of components

Definitions

  • the present invention relates to an electro-mechanical watch comprising an electromechanical oscillator, a battery generally in the shape of a shallow cylinder for supplying the oscillator and a gear train driven by the oscillator.
  • the batteries generally in the shape of a shallow cylinder (or pill-box) are used by preference because of their good tightness.
  • the dimensions of batteries actually on the market, although reduced, are nevertheless relatively large with respect to the dimensions of a wrist watch in which this battery must be mounted. Wherever this battery is disposed, the space remaining between the periphery of the battery and the centre of the watch, through which passes the axle of the hour and minute hands, is very reduced. This necessitates the use of wheels of ver small dimensions which are consequently ditficult to make and relatively expensive, since the battery and the gear train cannot be superposed without causing an unacceptable increase in the thickness of the watch.
  • the present invention has precisely for its object to provide an electro-mechanical watch of the type mentioned above, not having this disadvantage.
  • the invention is characterized by the fact that viewed in normal projection in the direction of the axle of the hands, the centre of the battery and the axle of the hands are situated on either side of the straight line traced through the geometrical centre of the watch perpendicular to the straight line connecting the centre of the battery to said geometrical centre.
  • a resonator 2 On a bottom plate 1 is mounted a resonator 2, partially shown, of which the oscillation is maintained electromagnetically by a circuit and some transducers (not shown).
  • This resonator drives the gear train by means of a click device constituted by a click 3 driving a ratchet wheel 4 of which the axle carries a polar wheel 5 driving magnetically a second polar wheel 6.
  • the pinion 7 of the polar wheel 6 drives the intermediate wheel 8, driving in turn the other Wheels of the gear train disposed in a continuous chain and comprising in particular coaxial wheels of seconds, minutes and hours whose axle disposed at carries respectively the hands of seconds, minutes and hours.
  • the battery 9 is disposed between the branches 2a and 2b of the resonator near the branch 2b.
  • the axle 10 of the hands occupies an eccentric position on a straight line passing through the centre 11 of the movement and approximately through the centre 12 of the battery.
  • This arrangement permits the use of wheels of suflicient diameter, of easy fabrication and of low cost price.
  • Numerous variations are possible, the essential con- United States Patent 0 3,375,652 Patented Apr. 2., 1968 dition to be fulfilled in order to be able to use gears of sufficient size, being that the centre of the battery and the axle of the hands be situated on either side of a straight line perpendicular to the straight line connecting the centre of the battery and the geometrical centre of the watch.
  • the eccentric position of the axle 10 implies an eccentric arrangement of the hands on the dial which gives the watch a novel esthetic appearance.
  • the battery is disposed at the side of the branches of the resonator, but if the resonator is constituted by a tuning fork with rectilinear branches, the battery and the tuning fork will be situated in superimposed planes.
  • the expressed condition remains nevertheless perfectly valid for this construction.
  • Electro-mechanical watch comprising:
  • Watch according to claim 1 characterized by the fact that the centre of the battery is situated at least approximately on the prolongation of the line joining the axis of the hands to the geometrical centre of the watch.
  • the electromechanical oscillator comprises a resonator having two symmetrical branches, characterized by the fact that the branches extend beside the battery.
  • the electromechanical oscillator comprises a resonator having at least one oscillating mass, characterized by the fact that the oscillating mass oscillates in a plane not containing the battery.
  • Watch according to claim 4 characterized by the fact that the oscillating mass extends above the battery.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
US539952A 1965-08-10 1966-04-04 Electro-mechanical watch Expired - Lifetime US3375652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1122065A CH447044A (fr) 1965-08-10 1965-08-10 Montre électromécanique

Publications (1)

Publication Number Publication Date
US3375652A true US3375652A (en) 1968-04-02

Family

ID=4371261

Family Applications (1)

Application Number Title Priority Date Filing Date
US539952A Expired - Lifetime US3375652A (en) 1965-08-10 1966-04-04 Electro-mechanical watch

Country Status (7)

Country Link
US (1) US3375652A (enrdf_load_stackoverflow)
AT (1) AT260803B (enrdf_load_stackoverflow)
BE (1) BE680715A (enrdf_load_stackoverflow)
CH (1) CH447044A (enrdf_load_stackoverflow)
DE (1) DE1523885A1 (enrdf_load_stackoverflow)
GB (1) GB1112716A (enrdf_load_stackoverflow)
NL (1) NL6603592A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865163A (en) * 1952-04-15 1958-12-23 Elgin Nat Watch Co Electrically-powered time device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865163A (en) * 1952-04-15 1958-12-23 Elgin Nat Watch Co Electrically-powered time device

Also Published As

Publication number Publication date
BE680715A (enrdf_load_stackoverflow) 1966-10-17
AT260803B (de) 1968-03-25
DE1523885A1 (de) 1970-04-09
CH1122065A4 (enrdf_load_stackoverflow) 1967-07-31
NL6603592A (enrdf_load_stackoverflow) 1967-02-13
GB1112716A (en) 1968-05-08
CH447044A (fr) 1968-03-15

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