GB1410208A - Time-setter for an electronic timepiece - Google Patents
Time-setter for an electronic timepieceInfo
- Publication number
- GB1410208A GB1410208A GB5758572A GB5758572A GB1410208A GB 1410208 A GB1410208 A GB 1410208A GB 5758572 A GB5758572 A GB 5758572A GB 5758572 A GB5758572 A GB 5758572A GB 1410208 A GB1410208 A GB 1410208A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- hand
- lever
- cam
- seconds
- 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
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
- G04B27/00—Mechanical devices for setting the time indicating means
- G04B27/004—Mechanical devices for setting the time indicating means having several simultaneous functions, e.g. stopping or starting the clockwork or the hands
-
- 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
- G04C13/11—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
-
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C9/00—Electrically-actuated devices for setting the time-indicating means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Transmission Devices (AREA)
Abstract
1410208 Electric timepieces CITIZEN WATCH CO Ltd 13 Dec 1972 [13 Dec 1971] 57585/72 Heading G3T An electronic timepiece comprising a drive means and a gear train which couples the drive means to the hands of the timepiece has a handsetting push-button 31, Fig. 1 which controls a heart-shaped cam 5 on a seconds-hand arbour 6, and a notched cam 7 on a minute-hand arbour 8, Fig.4, and a clutch mechanism in the transmission between the arbours 6 and 8 which is arranged to slip when both the seconds and minute hands are set, and not to slip when the seconds hand alone is set. In a first embodiment the drive means is a balance-wheel assembly 24 having a stop cam 24a carrying an impulse pin 24b which drives the gear train consisting of an indexing wheel 22, a sixth wheel 21, a fifth wheel 20 and a fourth wheel 6b which is mounted on seconds-hand arbour 6. Between indexing of the wheel 22 it is positioned by a magnet 23 mounted on a base-plate 1. Upon actuation of button 31, a lever 2 is rotated to release a resilient lever 27 which engages one of two projections 24d, 24e or stop cam 24a, thus stopping the balance wheel with pin 24b clear of wheel 22 so that damage to the balance wheel during hand-correction is prevented. The rotation of lever 2 also rotates levers 9 and 11. Lever 9 contacts the heart-shaped cam 5 to zero the seconds hand, and, providing the end 11a of lever 11 engages in notch 7a of cam 7, the minute hand is also set to zero. During this setting the clutch mechanism, which is constituted by a friction clutch comprising a ring 17 and a disc spring 18, slips. If lever 11 does not engage notch 7a no clutch slippage occurs and the minute hand rotates by less than a half-minute, corresponding to the rotation of the seconds hand as it is set. Notch 7a may correspond to a range of + 4 minutes around zero minutes, and further notches may be provided e.g. at thirty minutes and forty five minutes. In another modification Fig.5 (not shown) cam 7 has peripheral teeth. An embodiment is also envisaged in which the drive means is a Piezo-electrically-maintained tuning fork which carries a feed pawl which drives a ratchet wheel. A stop pawl also engages the ratchet wheel to prevent reverse motion thereof, and during setting both the feed and stop pawls are disengaged from the ratchet wheel so that it is freely rotable. Reference has been directed by the Comptroller to Specification 1347024.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46100825A JPS4881566A (en) | 1971-12-13 | 1971-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1410208A true GB1410208A (en) | 1975-10-15 |
Family
ID=14284089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5758572A Expired GB1410208A (en) | 1971-12-13 | 1972-12-13 | Time-setter for an electronic timepiece |
Country Status (4)
Country | Link |
---|---|
US (1) | US3817024A (en) |
JP (1) | JPS4881566A (en) |
DE (1) | DE2261622A1 (en) |
GB (1) | GB1410208A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2266791A (en) * | 1992-05-08 | 1993-11-10 | George Daniels | Improvements relaating to chronographs |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1454624A (en) * | 1973-08-30 | 1976-11-03 | Suwa Seikosha Kk | Electric timepiece |
JPS5830237Y2 (en) * | 1977-12-22 | 1983-07-02 | シチズン時計株式会社 | Arrangement structure of electronic clock |
JPH0328396Y2 (en) * | 1985-01-29 | 1991-06-18 | ||
EP2068211B1 (en) * | 2007-12-07 | 2013-03-13 | Omega SA | Chronograph control device |
EP2221678A1 (en) * | 2009-02-24 | 2010-08-25 | Montres Breguet SA | Device for blocking a resonator of a timepiece |
JP2011117768A (en) * | 2009-12-01 | 2011-06-16 | Seiko Instruments Inc | Chronograph timepiece |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US452424A (en) * | 1891-05-19 | Electric synchronizing device for clock-hands | ||
GB734618A (en) * | 1953-02-03 | 1955-08-03 | Emile Michel | Improvements in and relating to a time piece |
US3059412A (en) * | 1958-11-19 | 1962-10-23 | Hamilton Watch Co | Electric watch |
GB1018643A (en) * | 1962-04-16 | 1966-01-26 | Kokusai Electric Co Ltd | Improvements in or relating to time signal corrected timekeeping mechanisms |
US3262259A (en) * | 1965-02-10 | 1966-07-26 | Bulova Watch Co Inc | Time setting mechanism for electronic timepieces |
US3597915A (en) * | 1968-11-05 | 1971-08-10 | Susumu Aizawa | Driving device of electronic watch |
CH1735369A4 (en) * | 1969-11-22 | 1971-05-14 |
-
1971
- 1971-12-13 JP JP46100825A patent/JPS4881566A/ja active Pending
-
1972
- 1972-12-12 US US00314406A patent/US3817024A/en not_active Expired - Lifetime
- 1972-12-13 GB GB5758572A patent/GB1410208A/en not_active Expired
- 1972-12-15 DE DE19722261622 patent/DE2261622A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2266791A (en) * | 1992-05-08 | 1993-11-10 | George Daniels | Improvements relaating to chronographs |
Also Published As
Publication number | Publication date |
---|---|
DE2261622A1 (en) | 1973-06-14 |
US3817024A (en) | 1974-06-18 |
JPS4881566A (en) | 1973-10-31 |
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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 |