DE212388C - - Google Patents
Info
- Publication number
- DE212388C DE212388C DENDAT212388D DE212388DA DE212388C DE 212388 C DE212388 C DE 212388C DE NDAT212388 D DENDAT212388 D DE NDAT212388D DE 212388D A DE212388D A DE 212388DA DE 212388 C DE212388 C DE 212388C
- Authority
- DE
- Germany
- Prior art keywords
- shaft
- machine
- cutting
- coal
- sleeve
- 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
- 239000003245 coal Substances 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
- E21C27/14—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by force or pressure applied to side of slit, e.g. by wedges
- E21C27/16—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by force or pressure applied to side of slit, e.g. by wedges with means for both slitting and breaking-down
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)
- Details Of Cutting Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE212388C true DE212388C (enrdf_load_stackoverflow) |
Family
ID=474124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT212388D Active DE212388C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE212388C (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754112C (de) * | 1941-12-28 | 1953-06-15 | Eickhoff Maschinenfabrik Geb | Gewinnungs- und Lademaschine fuer den untertaegigen Strebbau |
-
0
- DE DENDAT212388D patent/DE212388C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754112C (de) * | 1941-12-28 | 1953-06-15 | Eickhoff Maschinenfabrik Geb | Gewinnungs- und Lademaschine fuer den untertaegigen Strebbau |
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