DE203720C - - Google Patents
Info
- Publication number
- DE203720C DE203720C DENDAT203720D DE203720DA DE203720C DE 203720 C DE203720 C DE 203720C DE NDAT203720 D DENDAT203720 D DE NDAT203720D DE 203720D A DE203720D A DE 203720DA DE 203720 C DE203720 C DE 203720C
- Authority
- DE
- Germany
- Prior art keywords
- hourglass
- wheel
- drive wheel
- circumference
- door
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004576 sand Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000182341 Cubitermes group Species 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
- G04F1/04—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity
- G04F1/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock
- G04F1/066—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock using electrical contact device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE203720C true DE203720C (enrdf_load_stackoverflow) |
Family
ID=466109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT203720D Active DE203720C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE203720C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT203720D patent/DE203720C/de active Active
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