GB1020456A - Watch spring - Google Patents
Watch springInfo
- Publication number
- GB1020456A GB1020456A GB4108262A GB4108262A GB1020456A GB 1020456 A GB1020456 A GB 1020456A GB 4108262 A GB4108262 A GB 4108262A GB 4108262 A GB4108262 A GB 4108262A GB 1020456 A GB1020456 A GB 1020456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- length
- thickness
- spring
- diameter
- outer length
- 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
- G04B33/00—Calibers
- G04B33/12—Calibers for extremely long running times
-
- 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
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/14—Mainsprings; Bridles therefor
Abstract
1,020,456. Springs. E.T.A. A.G. EBAUCHES-FABRIK. Oct. 30, 1962 [Nov. 1, 1961], No. 41082/62. Heading F2S. [Also in Division G3] The rundown time of a clockwork spring barrel is increased, albeit with some slight loss of power and timekeeping ability in a later stage of the rundown, by a particular mainspring. This spring, Figs. 1-10 (not shown), comprises a spirally coiled blade, characterized in that an outer length 6 thereof adapted for connection to the barrel, is of the same thickness throughout, so as to deliver the correct driving force, whilst a second length 7 extending inwardly from the outer length and adapted for connection to the arbor, is of lesser thickness than the outer length 6. This enables the diameter of the arbor to be reduced and the space available for the spring to be increased. The thickness of the outer length may be <SP>1</SP>/ 25 th of the diameter formed by the inner length when fully wound. The inner length 7 may also be of uniform thickness, but in one form it is made of uniformly increasing thickness from its inner end outwardly to its junction with the length 6. The rate of increase of thickness, from known rules concerning the smallest diameter to which the turns can safely be wound, is made as great as possible, to keep the inner length relatively short and improve the power/time characteristic. The spring may be in one piece or the lengths welded or riveted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1265861A CH376432A (en) | 1961-11-01 | 1961-11-01 | Clockspring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020456A true GB1020456A (en) | 1966-02-16 |
Family
ID=4385177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4108262A Expired GB1020456A (en) | 1961-11-01 | 1962-10-30 | Watch spring |
Country Status (3)
| Country | Link |
|---|---|
| CH (2) | CH1265861A4 (en) |
| DE (1) | DE1698611B1 (en) |
| GB (1) | GB1020456A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655642A2 (en) | 2003-02-06 | 2006-05-10 | ETA SA Manufacture Horlogère Suisse | Balance-spring resonator spiral and its method of fabrication |
| US8047705B2 (en) | 2006-02-09 | 2011-11-01 | The Swatch Group Research And Development Ltd | Anti-shock collet |
| CN102331703A (en) * | 2010-07-13 | 2012-01-25 | 慈溪市九菱电器有限公司 | Timer spring |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH685582B5 (en) * | 1993-10-13 | 1996-02-29 | Piguet Frederic Sa | DELIVERING spring barrel has constant torque and timepiece comprising such a barrel. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE847232C (en) * | 1951-08-01 | 1952-08-21 | Gerhard Kaufmann | Spring drive with constant force |
| FR1176728A (en) * | 1957-06-13 | 1959-04-15 | Auge & Cie Ets | Motor spring |
-
1961
- 1961-11-01 CH CH1265861D patent/CH1265861A4/xx unknown
- 1961-11-01 CH CH1265861A patent/CH376432A/en unknown
-
1962
- 1962-10-27 DE DE19621698611 patent/DE1698611B1/en active Pending
- 1962-10-30 GB GB4108262A patent/GB1020456A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655642A2 (en) | 2003-02-06 | 2006-05-10 | ETA SA Manufacture Horlogère Suisse | Balance-spring resonator spiral and its method of fabrication |
| EP2175328A2 (en) | 2003-02-06 | 2010-04-14 | ETA SA Manufacture Horlogère Suisse | Balance-spring resonator spiral and its method of fabrication |
| US10444706B2 (en) | 2003-02-06 | 2019-10-15 | Eta Sa Manufacture Horlogere Suisse | Spiral spring for a sprung balance spiral resonator and method for manufacturing the same |
| US8047705B2 (en) | 2006-02-09 | 2011-11-01 | The Swatch Group Research And Development Ltd | Anti-shock collet |
| CN102331703A (en) * | 2010-07-13 | 2012-01-25 | 慈溪市九菱电器有限公司 | Timer spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CH376432A (en) | 1963-12-14 |
| DE1698611B1 (en) | 1969-09-11 |
| CH1265861A4 (en) | 1963-12-14 |
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