DE269874C - - Google Patents
Info
- Publication number
- DE269874C DE269874C DENDAT269874D DE269874DA DE269874C DE 269874 C DE269874 C DE 269874C DE NDAT269874 D DENDAT269874 D DE NDAT269874D DE 269874D A DE269874D A DE 269874DA DE 269874 C DE269874 C DE 269874C
- Authority
- DE
- Germany
- Prior art keywords
- alarm
- duration
- contact
- clock
- discs
- 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.)
- Active
Links
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
- G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
- G04C21/323—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel by the hand(s) or handlike members closing the contacts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE269874C true DE269874C (en:Method) |
Family
ID=526688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT269874D Active DE269874C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE269874C (en:Method) |
-
0
- DE DENDAT269874D patent/DE269874C/de active Active
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