DE238246C - - Google Patents
Info
- Publication number
- DE238246C DE238246C DENDAT238246D DE238246DA DE238246C DE 238246 C DE238246 C DE 238246C DE NDAT238246 D DENDAT238246 D DE NDAT238246D DE 238246D A DE238246D A DE 238246DA DE 238246 C DE238246 C DE 238246C
- Authority
- DE
- Germany
- Prior art keywords
- chisel
- attached
- well drilling
- movement
- bit according
- 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
- 238000005553 drilling Methods 0.000 claims description 3
- 241000272165 Charadriidae Species 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 2
- 241000182341 Cubitermes group Species 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE238246C true DE238246C (forum.php) |
Family
ID=497784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT238246D Active DE238246C (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE238246C (forum.php) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102413A (en) * | 1976-08-30 | 1978-07-25 | Frederick Eric Johnston | Rock drilling apparatus and method |
-
0
- DE DENDAT238246D patent/DE238246C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102413A (en) * | 1976-08-30 | 1978-07-25 | Frederick Eric Johnston | Rock drilling apparatus and method |
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