DE217472C - - Google Patents
Info
- Publication number
- DE217472C DE217472C DENDAT217472D DE217472DA DE217472C DE 217472 C DE217472 C DE 217472C DE NDAT217472 D DENDAT217472 D DE NDAT217472D DE 217472D A DE217472D A DE 217472DA DE 217472 C DE217472 C DE 217472C
- Authority
- DE
- Germany
- Prior art keywords
- ropes
- cylinder
- excavator
- hanging
- ladder
- 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
- 238000009412 basement excavation Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ladders (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE217472C true DE217472C (enExample) |
Family
ID=478771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT217472D Active DE217472C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE217472C (enExample) |
-
0
- DE DENDAT217472D patent/DE217472C/de active Active
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