GB1471749A - Mechanism for driving a rotating jumping member in a timepiece - Google Patents

Mechanism for driving a rotating jumping member in a timepiece

Info

Publication number
GB1471749A
GB1471749A GB3538774A GB3538774A GB1471749A GB 1471749 A GB1471749 A GB 1471749A GB 3538774 A GB3538774 A GB 3538774A GB 3538774 A GB3538774 A GB 3538774A GB 1471749 A GB1471749 A GB 1471749A
Authority
GB
United Kingdom
Prior art keywords
cam
beak
tip
clockwise
pallet
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
GB3538774A
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.)
Ebauches SA
Original Assignee
Ebauches 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 Ebauches SA filed Critical Ebauches SA
Publication of GB1471749A publication Critical patent/GB1471749A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/20—Indicating by numbered bands, drums, discs, or sheets
    • G04B19/202—Indicating by numbered bands, drums, discs, or sheets by means of turning discs
    • 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
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement

Abstract

1471749 Watches EBAUCHES SA 12 Aug 1974 [20 Aug 1973] 35387/74 Heading G3T A mechanism for providing intermittent rotation of a timepiece indicator comprises an oscillatory pallet 25 having two beaks 29, 30 which co-operate both with a cam 10 fast with a continuously rotated driving member 11 and with jumping member 1 which is coaxial with the driving member and coupled thereto by a spring 16. Each beak comprises a locking face 31 or 32 to engage teeth 2 of the jumping member, and a tip 33 or 34 to engage lugs 19 of the cam 10. As shown the member 11 is driven clockwise by its toothing 12 but the member 1 is held by face 31 of entry beak 29 so that the spring 16 becomes tensioned. The force exerted by tooth 2a tends to rotate the pallet clockwise so that tip 34 of exit beak 30 is held against the cam surface. As the driving member and cam rotate, the beak 30 is allowed to move clockwise until tip 33 clears the tooth 2a and the member 1 is turned through one half pitch by the spring 16, bringing tooth 2b against the face 32. The pallet is then rotated anti-clockwise so that tip 33 engages a lug 19 until freed as the cam advances to permit the next jump. The arrangement may alternatively be such that the same beak co-operates simultaneously with the jumping member and the cam. The mechanism may be used in a calendar watch or to drive a hand or a digit disc in a watch or chronograph.
GB3538774A 1973-08-20 1974-08-12 Mechanism for driving a rotating jumping member in a timepiece Expired GB1471749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1195873A CH578752B5 (en) 1973-08-20 1973-08-20

Publications (1)

Publication Number Publication Date
GB1471749A true GB1471749A (en) 1977-04-27

Family

ID=4378503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3538774A Expired GB1471749A (en) 1973-08-20 1974-08-12 Mechanism for driving a rotating jumping member in a timepiece

Country Status (5)

Country Link
US (1) US3871171A (en)
JP (1) JPS5517356B2 (en)
CH (2) CH1195873A4 (en)
FR (1) FR2241815B1 (en)
GB (1) GB1471749A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063411A (en) * 1975-11-06 1977-12-20 Pforzheimer Uhren-Rohwerke Rudolf Wehner Stepping mechanism
CH697018A5 (en) * 2004-12-03 2008-03-14 Christophe Claret Sa animated timepiece.
EP2068210A3 (en) * 2007-12-04 2011-04-20 Chronode SA Trigger device
EP3032349B1 (en) * 2014-12-11 2023-02-22 Blancpain SA. Drive mechanism of a skipping member
CH717359B1 (en) * 2020-04-29 2022-11-30 Van Cleef & Arpels SA Device for triggering a watch mechanism.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1391340A (en) * 1920-08-20 1921-09-20 Thomas F I O'brien Timepiece-movement
US2871702A (en) * 1956-06-18 1959-02-03 Ingraham E Co Escapement
CH458216A (en) * 1966-02-22 1968-08-15 Ebauches Sa "Surprise" mechanism for a timepiece

Also Published As

Publication number Publication date
US3871171A (en) 1975-03-18
DE2438684A1 (en) 1975-03-27
JPS5517356B2 (en) 1980-05-10
CH578752B5 (en) 1976-08-13
JPS5051362A (en) 1975-05-08
FR2241815A1 (en) 1975-03-21
CH1195873A4 (en) 1975-12-31
FR2241815B1 (en) 1976-12-31
DE2438684B2 (en) 1976-05-13

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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