JPS5629185A - Second return zero unit for clock - Google Patents
Second return zero unit for clockInfo
- Publication number
- JPS5629185A JPS5629185A JP10522979A JP10522979A JPS5629185A JP S5629185 A JPS5629185 A JP S5629185A JP 10522979 A JP10522979 A JP 10522979A JP 10522979 A JP10522979 A JP 10522979A JP S5629185 A JPS5629185 A JP S5629185A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- return zero
- feed circuit
- signal
- fast feed
- 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.)
- Pending
Links
Landscapes
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To obtain the sero second simple and excellent in the operational ability, by providing the contact controlling the second fast feed circuit, second fast feed circuit and the unit compulsively holding the second-arm wheel at the return zero unit, in interlocking with the control operation of contact unit.
CONSTITUTION: The second feed circuit is open for the switch 66 in normal case. With this state, the signal outputting one pulse per one second for the pulse of 31.25ms in width is produced to the outline 82 of the AND gate 52. Further, every time the signal on the output line of the AND gate 52 is fallen from the high potential H to the low potential L every one second, the signal of the output line 98 of the flip flop 60 is alternately at H or L. With this fast feed, the second pointer inserted at the tip of the second pointer shaft 10 is stopped at 0sec for return zero. As mentioned above, since heart cam, second setting wheel and limit switch are not required, the mechanism can be made simpler.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10522979A JPS5629185A (en) | 1979-08-18 | 1979-08-18 | Second return zero unit for clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10522979A JPS5629185A (en) | 1979-08-18 | 1979-08-18 | Second return zero unit for clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5629185A true JPS5629185A (en) | 1981-03-23 |
Family
ID=14401821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10522979A Pending JPS5629185A (en) | 1979-08-18 | 1979-08-18 | Second return zero unit for clock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5629185A (en) |
-
1979
- 1979-08-18 JP JP10522979A patent/JPS5629185A/en active Pending
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