GB799824A - Improvements in or relating to a clock or watch mechanism - Google Patents

Improvements in or relating to a clock or watch mechanism

Info

Publication number
GB799824A
GB799824A GB2397/55A GB239755A GB799824A GB 799824 A GB799824 A GB 799824A GB 2397/55 A GB2397/55 A GB 2397/55A GB 239755 A GB239755 A GB 239755A GB 799824 A GB799824 A GB 799824A
Authority
GB
United Kingdom
Prior art keywords
leaf spring
wheel
arbor
pawl
face
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
GB2397/55A
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.)
Bulova Watch Co Inc
Original Assignee
Bulova Watch Co Inc
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 Bulova Watch Co Inc filed Critical Bulova Watch Co Inc
Publication of GB799824A publication Critical patent/GB799824A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H31/00—Other gearings with freewheeling members or other intermittently driving members
    • F16H31/003—Step-by-step mechanisms for rotary motion
    • F16H31/005—Step-by-step mechanisms for rotary motion with pawls driven by a reciprocating or oscillating transmission member
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/02—Devices allowing the motion of a rotatable part in only one direction
    • G04B11/04—Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmission Devices (AREA)
  • Electric Clocks (AREA)

Abstract

799,824. Clocks and watches. BULOVA WATCH CO. Inc. Jan, 26. 1955 [Feb. 10, 1954], No. 2397/55. Class 139 [Also in Group XXIV] In ratchet gearing for electronicallydriven clocks and watches a vibrator 3 carries a pawl 5 driving a toothed wheel 1 the arbor 2 of which is braked by frictional engagement with a leaf spring 8 to prevent back-running and over-running. The leaf spring 8 may be replaced by a leaf spring acting on the end face of the arbor 2, by a spring-loaded plug bearing on the face of the wheel 1, or by a forked leaf spring straddling the arbor 2 and bearing on the wheel face through a loose washer. The pawl 5 comprises a resilient strip whose natural frequency is higher than the vibrator frequency. The wheel 1 may be of sawtoothed form (as shown) or may have equal-sided teeth or sinusoidal teeth. The free end of the pawl 5 may be hooked so as to act in tension and may carry a wheelengaging gem or other hard-wearing piece such as glass, hardened steel or sintered metal. Specification 761,609 is referred to.
GB2397/55A 1954-02-10 1955-01-26 Improvements in or relating to a clock or watch mechanism Expired GB799824A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH318231T 1954-02-10

Publications (1)

Publication Number Publication Date
GB799824A true GB799824A (en) 1958-08-13

Family

ID=4537566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2397/55A Expired GB799824A (en) 1954-02-10 1955-01-26 Improvements in or relating to a clock or watch mechanism

Country Status (6)

Country Link
CA (1) CA564260A (en)
CH (1) CH318231A (en)
DE (1) DE1053416B (en)
FR (1) FR1124446A (en)
GB (1) GB799824A (en)
IT (1) IT526590B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT563090A (en) * 1956-07-30
DE1235824B (en) * 1962-01-05 1967-03-02 Georges Ceppi Device for driving a time-keeping electrical device
DE1235821B (en) * 1964-01-28 1967-03-02 Hugo Hettich Electric clock with self-controlled periodic electric drive of the balance wheel
CH671492B5 (en) * 1987-04-02 1990-03-15 Roventa Henex Sa
DE102005026165A1 (en) * 2005-06-06 2006-12-07 Sam Sport And Marketing Ag Blocking device for a cord or band-shaped fastening means of a clothing article
EP3396470B1 (en) * 2017-04-24 2020-01-01 ETA SA Manufacture Horlogère Suisse Mechanical braking device for a clock wheel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH107905A (en) * 1923-10-10 1924-12-01 Edmond Prince Charles Electric clock.
CH143077A (en) * 1928-08-02 1930-10-31 Favre Bulle Maurice Philippe Electric clock escapement.

Also Published As

Publication number Publication date
DE1053416B (en) 1959-03-19
IT526590B (en) 1955-05-18
FR1124446A (en) 1956-10-10
CH318231A (en) 1957-02-15
CA564260A (en) 1958-10-07

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