DE214452C - - Google Patents
Info
- Publication number
- DE214452C DE214452C DENDAT214452D DE214452DA DE214452C DE 214452 C DE214452 C DE 214452C DE NDAT214452 D DENDAT214452 D DE NDAT214452D DE 214452D A DE214452D A DE 214452DA DE 214452 C DE214452 C DE 214452C
- Authority
- DE
- Germany
- Prior art keywords
- movement
- drill
- column
- swivel
- pivoting
- 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 12
- 239000011435 rock Substances 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/64—Slitting machines guided solely by hand and either carried by hand or mounted on supports
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 |
|---|---|
| DE214452C true DE214452C (enrdf_load_stackoverflow) |
Family
ID=476031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT214452D Active DE214452C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE214452C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT214452D patent/DE214452C/de active Active
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