GB593122A - Improvements in or relating to electric clocks - Google Patents
Improvements in or relating to electric clocksInfo
- Publication number
- GB593122A GB593122A GB1490345A GB1490345A GB593122A GB 593122 A GB593122 A GB 593122A GB 1490345 A GB1490345 A GB 1490345A GB 1490345 A GB1490345 A GB 1490345A GB 593122 A GB593122 A GB 593122A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- seconds
- shaft
- minutes
- pin
- 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
- 230000001429 stepping Effects 0.000 abstract 2
- 230000001360 synchronised Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C15/00—Clocks driven by synchronous motors
- G04C15/0009—Clocks driven by synchronous motors without power-reserve
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Transmission Devices (AREA)
Abstract
593,122. Electric clocks. TRUVOX ENGINEERING CO., Ltd., and THILO, H. A. June 12, 1945, No. 14903. [Class 139] In an electric clock the transmission gearing between the synchronous motor shaft and the seconds hand consists solely of a pin mounted slightly eccentrically with respect to the driving shaft adapted to engage the teeth of the seconds wheel so as to give a large step down of gearing at a single stage. As shown in Figs, 2, 5 and 6, a synchronous electric motor 13 has an armature 10 mounted on a shaft 14 rotated at 120 revs. per minute. The shaft 14 drives by means of an eccentrically mounted pin 15, Fig. 5, a 120 toothed seconds wheel 16 on the shaft 17 of which is mounted a seconds disc bearing the numbers of the seconds which numbers are viewed through an opening in the dial. A spring pawl 25 ensures correct " stepping on " of the seconds wheel 16. The drive from the seconds wheel 16 to the 120- toothed minutes wheel 19 is also by means of an eccentric pin 18 on the shaft 17 which in this case is shaped to act like a Geneva stop mechanism to ensure correct " stepping on " of the minutes wheel. There is just an ordinary drive between the minutes wheel and the hours wheel.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593122A true GB593122A (en) | 1947-10-08 |
Family
ID=1731109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1490345A Expired GB593122A (en) | 1945-06-12 | Improvements in or relating to electric clocks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593122A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2616240A (en) * | 1951-12-12 | 1952-11-04 | Joseph A Kroll | Alternating current clock |
| US2845772A (en) * | 1953-03-10 | 1958-08-05 | Ebauches Sa | Electric watch |
-
1945
- 1945-06-12 GB GB1490345A patent/GB593122A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2616240A (en) * | 1951-12-12 | 1952-11-04 | Joseph A Kroll | Alternating current clock |
| US2845772A (en) * | 1953-03-10 | 1958-08-05 | Ebauches Sa | Electric watch |
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