DE155349C - - Google Patents
Info
- Publication number
- DE155349C DE155349C DENDAT155349D DE155349DA DE155349C DE 155349 C DE155349 C DE 155349C DE NDAT155349 D DENDAT155349 D DE NDAT155349D DE 155349D A DE155349D A DE 155349DA DE 155349 C DE155349 C DE 155349C
- Authority
- DE
- Germany
- Prior art keywords
- alarm clock
- brushes
- clockwork
- current
- friction
- 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
- 230000005611 electricity Effects 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Motor Or Generator Current Collectors (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE155349C true DE155349C (enrdf_load_stackoverflow) |
Family
ID=421828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT155349D Active DE155349C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE155349C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT155349D patent/DE155349C/de active Active
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